1,536 results match your criteria Brazilian oral research[Journal]


Elevated prevalence of high-risk HPV in healthy oral mucosa of users and nonusers of drugs in Northeastern Brazil.

Braz Oral Res 2019 11;33:e031. Epub 2019 Apr 11.

Universidade Federal de Sergipe - UFS, Department of Morphology, Aracaju, SE, Brazil.

Variable rates of HPV infection have been reported in healthy oral mucosa worldwide. The main objective of this study was to detect and genotype HPV infection in users and nonusers of drugs with clinically healthy mucosa from the Northeast Brazil. Samples from 105 patients were amplified using the primers MY09/MY11 and GP5+/GP6+, and genotyping was performed by multiplex-PCR for HPV-6/11, 16 and 18. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0031DOI Listing

Risk factors associated with short dental implant success: a long-term retrospective evaluation of patients followed up for up to 9 years.

Braz Oral Res 2019 11;33:e030. Epub 2019 Apr 11.

Private Practice, Prosthodontic Specialist, Ankara, Turkey.

This multicenter study aimed to identify the different implant- and patient-related risk factors for long-term short dental implant success. Through a retrospective chart review of three centers, patient information regarding demographic variables, smoking habits, history of periodontitis, systemic diseases, and medications in addition to the parameters for short implant placement including implant manufacturer, design, anatomical location, diameter and length, and type of placement was collected. For statistical analysis, univariate regression models were used at the implant and patient levels. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0030DOI Listing

Cyclic fatigue resistance of novel Genius and Edgefile nickel-titanium reciprocating instruments.

Braz Oral Res 2019 11;33:e028. Epub 2019 Apr 11.

Universidade Estadual Paulista- UNESP, Araçatuba School of Dentistry, Department of Endodontics, Araçatuba, SP, Brazil.

This study aimed to assess the cyclic fatigue resistance of Genius and EdgeFile X1 reciprocating instruments compared with WaveOne Gold Primary. Twenty Genius (Ultradent) 25.04, 20 Genius 30. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0028DOI Listing

Immunohistochemical evaluation of HLA-G and FoxP3+ T regulatory cells in oral cavity and lower lip squamous cell carcinomas.

Braz Oral Res 2019 11;33:e020. Epub 2019 Apr 11.

Universidade Federal do Rio Grande do Norte - UFRN, Department of Clinical Analysis and Toxicology, Natal, RN, Brazil.

Human Leukocyte Antigen G (HLA-G) is a molecule involved in the tumor immunosuppression and also in the generation of regulatory T (Treg) cells, thus leading to evasion to the immune system host, and consequently, contributing to tumor progression in several cancers. The aim of this study was to evaluate the immunoexpression of HLA-G by tumor cells and FoxP3+ Treg cells in 25 oral tongue squamous cell carcinomas (SCCs) and 25 lower lip SCCs and analyze their relationship with clinical parameters. HLA-G expression was higher in oral tongue SCCs than in lower lip SCCs. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0020DOI Listing

Brittleness index and its relationship with materials mechanical properties: Influence on the machinability of CAD/CAM materials.

Braz Oral Res 2019 4;33:e026. Epub 2019 Apr 4.

Universidade do Estado de São Paulo - Unesp, Faculty of Dentistry, Department of Restorative Dentistry, Araraquara, São Paulo, Brazil.

The aim of this study is to evaluate the machinability of four CAD/CAM materials (n = 13) assessed by brittleness index, Vickers hardness, and fracture toughness and interaction among such mechanical properties. The materials selected in this in vitro study are Feldspathic ceramic [FC], Lithium-disilicate glass ceramic [LD], leucite-reinforced glass ceramic [LR], and nanofilled resin material [RN]. Slices were made from the blocks following original dimensions 14 × 12 × 3 mm (L × W × H), using a precision slow-speed saw device and then surfaces were regularized through a polishing device. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0026DOI Listing
April 2019
1 Read

Color stability and surface roughness of chitosan- and nanodiamond-modified bisacrylic resin.

Braz Oral Res 2019 4;33:e024. Epub 2019 Apr 4.

Universidade Estadual Paulista - UNESP, Araçatuba School of Dentistry, Department of Dental Materials and Prosthodontics, Araçatuba, São Paulo, Brazil.

The aim of this study is to evaluate the effect of chitosan or nanodiamond incorporation on the color stability and surface roughness of a bisacrylic resin subjected to artificial aging. Four bisacrylic resins were evaluated, namely, control, chitosan-modified material, nanodiamond-modified material, and chitosan-nanodiamond-modified material. Twenty-four specimens were prepared for each material. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0024DOI Listing
April 2019
3 Reads

Anadenanthera Colubrina vell Brenan: anti-Candida and antibiofilm activities, toxicity and therapeutical action.

Braz Oral Res 2019 4;33:e023. Epub 2019 Apr 4.

Universidade Estadual da Paraíba - UEPb, Department of Dentistry, Campina Grande, Paraíba, Brazil.

We evaluated the antifungal and antibiofilm potential of the hydroalcoholic extract of bark from Anadenanthera colubrina (vell.) Brenan, known as Angico, against Candida spp. Antifungal activity was evaluated using the microdilution technique through the Minimum Inhibitory and Fungicide Concentrations (MIC and MFC). Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0023DOI Listing
April 2019
1 Read

Antibacterial, chemical and physical properties of sealants with polyhexamethylene guanidine hydrochloride.

Braz Oral Res 2019 Mar 18;33:e019. Epub 2019 Mar 18.

Universidade Federal do Rio Grande do Sul - UFRGS, School of Dentistry, Dental Materials Laboratory, Porto Alegre, RS, Brazil.

The aim of this study was to evaluate the influence of polyhexamethylene guanidine hydrochloride (PHMGH) in the physico-chemical properties and antibacterial activity of an experimental resin sealant. An experimental resin sealant was formulated with 60 wt.% of bisphenol A glycol dimethacrylate and 40 wt. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0019DOI Listing
March 2019
1 Read

Cleaning effectiveness of a nickel-titanium ultrasonic tip in ultrasonically activated irrigation: a SEM study.

Braz Oral Res 2019 Mar 18;33:e017. Epub 2019 Mar 18.

Universidade Estadual Paulista- UNESP, Araçatuba School of Dentistry, Department of Endodontics, Araçatuba, SP, Brazil.

In endodontic treatment, regardless of the instrumentation technique, the presence of a smear layer covering contaminated dentin walls is always a concern. Thus, irrigation plays an essential role in reducing bacterial load. To enhance irrigation effectiveness, different ultrasonic activation methods and the use of different tips have been studied. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0017DOI Listing

A novel application of nano eggshell/titanium dioxide composite on occluding dentine tubules: an in vitro study.

Braz Oral Res 2019 Mar 18;33:e016. Epub 2019 Mar 18.

Durban University of Technology - DUT Marketing, Durban, South Africa.

To synthesize Nano eggshell-titanium-dioxide (EB@TiO2) biocomposite and to evaluate its effectiveness in occluding opened dentine tubules. EB@TiO2 was synthesized and characterized using X-ray diffraction (XRD), and Transmission Electron Microscope (TEM). Sixteen simulated bovine dentine discs were prepared and randomly assigned into four groups according to the following treatment (n = 4): Group 1: No treatment; Group 2: eggshell powder; Group 3: EB@TiO2; Group 4: Sensodyne. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0016DOI Listing

Malocclusion and dental appearance in underprivileged Brazilian adolescents.

Braz Oral Res 2019 Mar 18;33:e014. Epub 2019 Mar 18.

Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Community Dentistry, Piracicaba, SP, Brazil.

Satisfaction with dental aesthetics is a subjective indicator used in epidemiological studies and is related to health behaviours. Little is known about the factors that influence this indicator, particularly among adolescents who live in a situation of social vulnerability. The aim of this study was to investigate the relationship between malocclusion and dental appearance in underprivileged Brazilian adolescents. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0014DOI Listing

Evaluation of an antibacterial orthodontic adhesive incorporated with niobium-based bioglass: an in situ study.

Braz Oral Res 2019 Mar 18;33:e010. Epub 2019 Mar 18.

Universidade Federal do Rio Grande do Sul - UFRGS, School of Dentistry, Dental Materials Laboratory, Porto Alegre, Rio Grande do Sul, Brazil.

This in situ study aimed to evaluate the antibacterial and anti-demineralization effects of an experimental orthodontic adhesive containing triazine and niobium phosphate bioglass (TAT) around brackets bonded to enamel surfaces. Sixteen volunteers were selected to use intra-oral devices with six metallic brackets bonded to enamel blocks. The experimental orthodontic adhesives were composed by 75% BisGMA and 25% TEGDMA containing 0% TAT and 20% TAT. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0010DOI Listing
March 2019
3 Reads

Physicomechanical and thermal analysis of bulk-fill and conventional composites.

Braz Oral Res 2019 Mar 18;33:e008. Epub 2019 Mar 18.

Universidade de Pernamburco - UPE, Department of Dentistry, Tabatinga Camarajibe, PE, Brazil.

The aim of this study was to evaluate the degree of conversion (DC) and the thermal stability of bulk-fill and conventional composite resins. Eleven composite resin samples were prepared to evaluate the DC, Vickers microhardness (VMH), mass and residue/particle loss, glass transition temperature (Tg), enthalpy, and linear coefficient of thermal expansion (CTE) using infrared spectroscopy (FTIR), microdurometer analyses, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dilatometry (DIL). The data were subjected to statistical analysis, with a significance level of 95%. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0008DOI Listing
March 2019
3 Reads

Erratum: Periodontal parameters in prediabetes, type 2 diabetes mellitus, and non-diabetic patients. Braz Oral Res. 2018;32:e81. https://doi.org/10.1590/1807-3107bor-2018.vol32.0081.

Authors:

Braz Oral Res 2019 03 18;32:e81err. Epub 2019 Mar 18.

[This corrects the article doi: 10.1590/1807-3107bor-2018.vol32. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0081errDOI Listing
March 2019
2 Reads

Effect of intracanal diode laser application and low-level laser therapy on CGRP change.

Braz Oral Res 2019 03 18;32:e125. Epub 2019 Mar 18.

Başkent University, Faculty of Dentistry, Department of Periodontology, Ankara, Turkey.

The aim of this study was to investigate the effect of a placebo, intracanal diode laser application, and low-level laser therapy (LLLT) on the change of the total amount of calcitonin gene-related peptide (CGRP) in the gingival crevicular fluid (GCF) (split-mouth study design). GCF sampling was performed on a contralateral tooth and experimental tooth (root canal-treated tooth) of thirty-nine patients. The patients were divided into three groups (n = 13), as follows: placebo (mock laser application), intracanal laser application, and LLLT. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0125DOI Listing
March 2019
1 Read

Impact of untreated dental caries on oral health-related quality of life of children with special health care needs.

Braz Oral Res 2019 Mar 18;32:e117. Epub 2019 Mar 18.

Universidade Federal Fluminense - UFF, School of Dentistry, Department of Pediatric Dentistry, Niterói, RJ, Brazil.

The oral health status of children with special health care needs (SHCN) can affect their quality of life wich domains of the Brazilian version of the Early Childohood Oral Health Impact Scale (B-ECOHIS). A cross-sectional study was conducted in children with SHCN (aged 1 to 9 years), who underwent an oral examination for the assessment of dental caries severity. Parents/caregivers answered two questionnaires, one on oral health-related quality of life (OHRQoL) - B-ECOHIS, and one on socioeconomic characteristics. Read More

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http://dx.doi.org/10.1590/1807-3107BOR-2018.vol32.0117DOI Listing

Effect of a resin-modified glass-ionomer with calcium on enamel demineralization inhibition: an in vitro study.

Braz Oral Res 2019 Feb 11;33:e015. Epub 2019 Feb 11.

Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru, SP, Brazil.

We assessed the effect of a new coating material based on resin-modified glass-ionomer with calcium (Ca) in inhibiting the demineralization of underlying and adjacent areas surrounding caries-like lesions in enamel. The measures used were surface hardness (SH) and cross-sectional hardness (CSH). Thirty-six bovine enamel specimens (3 × 6 × 2 mm) were randomly allocated into three groups (n = 12): No treatment (NT); resin-modified glass-ionomer with Ca (Clinpro XT Varnish, 3M ESPE) (CL), and fluoride varnish (Duraphat, Colgate) (DU). Read More

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http://dx.doi.org/10.1590/1807-3107BOR-2019.vol33.0015DOI Listing
February 2019
1 Read
0.774 Impact Factor

Effect of grape seed extract (GSE) on functional activity and mineralization of OD-21 and MDPC-23 cell lines.

Braz Oral Res 2019 Feb 11;33:e013. Epub 2019 Feb 11.

Universidade de São Paulo - USP, School of Dentistry of Ribeirão Preto, Department of Basic and Oral Biology, Ribeirão Preto, SP, Brazil.

Recent studies on functional tissue regeneration have focused on substances that favor cell proliferation and differentiation, including the bioactive phenolic compounds present in grape seed extract (GSE). The aim of this investigation was to evaluate the stimulatory potential of GSE in the functional activity of undifferentiated pulp cells and odontoblast-like cells. OD-21 and MDPC-23 cell lines were cultivated in odontogenic medium until subconfluence, seeded in 24-well culture plates in a concentration of 2x104/well and divided into: 1) OD-21 without GSE; 2) OD-21+10 µg/mL of GSE; 3) MDPC-23 without GSE; 4) MDPC-23+10 µg/mL of GSE. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0013DOI Listing
February 2019
2 Reads

New material perspective for endocrown restorations: effects on mechanical performance and fracture behavior.

Braz Oral Res 2019 Feb 11;33:e012. Epub 2019 Feb 11.

Graduate Program in Dentistry, Federal University of Pelotas, Pelotas-RS, Rua Gonçalves Chaves 457, 96015560, Brazil.

The aim of this study was to investigate the mechanical performance and the fracture behavior of endocrown restorations prepared using distinct restorative materials. A total of 42 sound molars with similar crown size and shape were cut at 2 mm above the cementoenamel junction and endodontically treated. They were categorized according to the restorative material used to fabricate endocrown restorations (n=7), namely, conventional composite (Filtek™ Z350 XT), bulk fill composite (Filtek™ Bulk Fill), conventional composite modeled using resin adhesives (SBMP: Scotchbond™ Multipurpose Adhesive; or SBU: Scotchbond™ Universal Adhesive), and IPS e. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0012DOI Listing
February 2019
4 Reads

Ultrasonic tips as an auxiliary method for the instrumentation of oval-shaped root canals.

Braz Oral Res 2019 Feb 11;33:e011. Epub 2019 Feb 11.

Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru, SP, Brazil.

To evaluate the influence of novel ultrasonic tips as an auxiliary method for the rotary preparation of flattened/oval-shaped canals. Forty-five mandibular incisors were selected and divided into one of three experimental groups (n = 15): Group PFCP - ProDesign Logic 25/.05 + Flatsonic + Clearsonic + Prodesign Logic 40/. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0011DOI Listing
February 2019
9 Reads

Validation of self-reported history of root canal treatment in a southern Brazilian subpopulation.

Braz Oral Res 2019 Feb 11;33:e007. Epub 2019 Feb 11.

Pontifícia Universidade Católica do Rio Grande do Sul - PUC-RS, School of Health Sciences, Graduate Program in Dentistry, Porto Alegre, RS, Brazil.

The aim of this study was to assess self-reported history of root canal treatment (SRHRCT) as a method for detecting the presence of root canal treatment (RCT) and apical periodontitis (AP) in a southern Brazilian subpopulation. In this cross-sectional study, 136 military police officers from the city of Porto Alegre, Brazil, were included. The participants were interviewed and full-mouth periapical radiographs were taken. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0007DOI Listing
February 2019

The effect of enamel matrix derivatives on root coverage: a 12-month follow-up of a randomized clinical trial.

Braz Oral Res 2019 Feb 11;33:e006. Epub 2019 Feb 11.

Izmir Katip Çelebi University, Faculty of Dentistry, Department of Periodontology, Izmir Turkey.

Subepithelial connective tissue grafts (SCTGs) with a coronally advanced flap (CAF) are accepted as the gold standard for covering denuded root surfaces. In recent years, enamel matrix derivatives (EMDs) have been used for their regenerative potential in periodontics. The aim of this split-mouth and randomized controlled study was to assess the clinical and aesthetical impacts of EMD application in combination with SCTG+CAF in patients with Miller's Class I and II gingival recessions in contralateral canines of the maxilla. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0006DOI Listing
February 2019

Influence of chlorhexidine and zinc oxide in calcium hydroxide pastes on pH changes in external root surface.

Braz Oral Res 2019 Feb 11;33:e005. Epub 2019 Feb 11.

Universidade Estadual de Campinas - Unicamp, School of Dentistry of Piracicaba, Department of Restorative Dentistry, Piracicaba, SP, Brazil.

The objective of this study was to assess the influence of chlorhexidine (liquid and gel) and zinc oxide in calcium hydroxide (CH) pastes on root pH in simulated external resorption. One hundred human anterior teeth with a single root canal were selected. After decoronation and root canal instrumentation, the specimens were divided into 4 experimental groups and 1 control group (without intracanal paste): CH + saline (CH+S), CH + 2% chlorhexidine liquid (CH+ CHX), CH + 2% chlorhexidine gel (CH+ CHXg), and CH + 2% chlorhexidine gel + zinc oxide (CH+ CHXg+ZnO). Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0005DOI Listing
February 2019
8 Reads

Four A'S of eco-friendly dentistry.

Braz Oral Res 2019 Feb 11;33:e004. Epub 2019 Feb 11.

IBN Sina National College for Medical Studies, Preventive Dental Sciences, Jeddah, Makkah, Saudi Arabi.

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0004DOI Listing
February 2019

A comparative study of bulk-fill composites: degree of conversion, post-gel shrinkage and cytotoxicity.

Braz Oral Res 2019 Feb 11;33:e003. Epub 2019 Feb 11.

Universidad Peruana de Ciencias Aplicadas, Escuela de Odontología Lima, Lima, Peru.

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0003DOI Listing
February 2019

Iodoform Vs Calcium Hydroxide/Zinc Oxide based pastes: 12-month findings of a Randomized Controlled Trial.

Braz Oral Res 2019 Feb 11;33:e002. Epub 2019 Feb 11.

Universidade Federal do Rio de Janeiro - UFRJ, School of Dentistry, Department of Pediatric Dentistry and Orthodontics, Rio de Janeiro, RJ, Brazil.

This study evaluated clinical and radiographic twelve-month outcomes of root canal treatments (CT) with smear layer removal, performed in primary teeth, using two different root canal filling materials. Pulpectomy was performed on 27 primary teeth with necrosis or irreversible pulpitis, caused by dental caries or trauma, in 23 children (2-7 years old). A single trained operator performed the CT in a single visit in cases without periapical or interradicular radiolucency (PIR) or in multiple visits in cases with PIR. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0002DOI Listing
February 2019
3 Reads

The effect of colchicine on alveolar bone loss in ligature-induced periodontitis.

Braz Oral Res 2019 Feb 11;33:e001. Epub 2019 Feb 11.

Gaziosmanpaşa University, School of Medicine,Department of Histology and Embryology, Tokat, Turkey.

Colchicine is widely used in the treatment of several inflammatory diseases due to its anti-inflammatory effect, but effects on bone metabolism are unclear. The aim of this study was to evaluate the effects of systemically-administered colchicine on healthy periodontium and experimentally-induced periodontitis. In total, 42 male Wistar rats were included in this study. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2019.vol33.0001DOI Listing
February 2019
5 Reads

Analysis of the asynchronous dental teleconsulting of Telehealth Brazil Networks in Minas Gerais.

Braz Oral Res 2018 Dec 17;32:e128. Epub 2018 Dec 17.

Universidade Federal de Minas Gerais - UFMG, School of Dentistry, Department of Social and Preventive Dentistry, Belo Horizonte, Minas Gerais, Brazil.

This cross-sectional study aimed to evaluate the asynchronous dental teleconsulting of Telehealth Brazil Networks Program in Minas Gerais. Data were collected from secondary databases of the Clinical Hospital of the Universidade Federal de Minas Gerais (CH/UFMG) and Medical School of UFMG (MS/UFMG), from July 2015 to July 2017. The variables analyzed were telehealth center, sex and profession, date and time questions and answers, response time in days, whether the issue was duly addressed, whether the teleconsulting was attended, post status, professional's satisfaction, conduct adopted after teleconsulting, dental specialty area, and type of issues. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0128DOI Listing
December 2018
1 Read

Locus of control among individuals with different pain conditions.

Braz Oral Res 2018 Dec 17;32:e127. Epub 2018 Dec 17.

Universidade Estadual Paulista- Unesp, School of of Pharmaceutical Sciences, Department of Food and Nutrition, Araraquara, SP, Brazil.

The objective of this study was to evaluate the psychometric properties of the Multidimensional Health Locus of Control - Form C (MHLC-C) scale applied to a sample of adult Brazilian patients with different pain conditions. The scores were then identified and compared on each of the subscales and profiles regarding locus of control. The sample consisted of 1,149 adult individuals (79% women; mean age: 36. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0127DOI Listing
December 2018
20 Reads
0.774 Impact Factor

miR-141 is up-regulated in biopsies from Vietnamese patients with nasopharyngeal carcinoma.

Braz Oral Res 2018 Dec 17;32:e126. Epub 2018 Dec 17.

Ho Chi Minh City Open University, Faculty of Biotechnology, Department of Pharmaceutical Biotechnology, Ho Chi Minh City, Vietnam.

Novel biomarkers for screening, diagnosis and monitoring the treatment of nasopharyngeal carcinoma (NPC), one of the most common cancers in Vietnam, are urgently required. Increasing evidence suggests that microRNA-141 (miR-141) is associated with NPC, owing to its ability to affect the expression of genes that modulate tumorigenesis. Unfortunately, research on miR-141 expression in Vietnamese patients is limited. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0126DOI Listing
December 2018
5 Reads

Multiple-peak and single-peak dental curing lights comparison on the wear resistance of bulk-fill composites.

Braz Oral Res 2018 Dec 17;32:e122. Epub 2018 Dec 17.

Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil.

The effects of tooth brushing could affect the long-term esthetic outcome of composite restorations. This study evaluated the effect of two different emission spectrum light-curing units on the surface roughness, roughness profile, topography and microhardness of bulk-fill composites after in vitro toothbrushing. Valo (multiple-peak) and Demi Ultra (single-peak) curing lights were each used for 10s to polymerize three bulk-fill resin composites: Filtek Bulk Fill Posterior Restorative (FBF), Tetric EvoCeram Bulk Fill (TET) and Surefil SDR Flow (SDR). Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0122DOI Listing
December 2018
1 Read

Acutely infected teeth: to extract or not to extract?

Braz Oral Res 2018 Dec 6;32:e124. Epub 2018 Dec 6.

Necmettin Erbakan University, Faculty of Dentistry, Oral and Maxillofacial Surgery Department, Konya, Turkey.

Not only laymen but also dentists generally believe that extraction of acutely infected teeth should be avoided until the infection subdues by using systemic antibiotics. The aim of this study was to compare perioperative complications in routine extractions of acutely infected teeth with extractions of asymptomatic teeth. This prospective study was performed with 82 patients. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0124DOI Listing
December 2018
17 Reads

Squamous cell carcinoma of the tongue in patients older than 45 years.

Braz Oral Res 2018 Dec 6;32:e123. Epub 2018 Dec 6.

Hospital General de México "Eduardo Liceaga", Department of Pathology, México City, México.

This study aims to evaluate the clinicopathological features, TNM status, AJCC staging and behavior of squamous cell carcinoma of the tongue (SCCT) in patients older than 45 years. The files of the Department of Pathology of the Hospital General de México were reviewed and all cases of SCCT in patients older than 45 years were selected. Clinicopathological features, treatment, follow-up, microscopic diagnosis, and IJCC and TNM staging were retrieved. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0123DOI Listing
December 2018
19 Reads

How to improve root canal filling in teeth subjected to radiation therapy for cancer.

Braz Oral Res 2018 Nov 29;32:e121. Epub 2018 Nov 29.

Universidade de São Paulo - USP, Dental School of Ribeirão Preto, Department of Restorative Dentistry, Ribeirão Preto, SP, Brazil.

The aim of this study was to evaluate the influence of radiation therapy on root canal sealer push-out bond strength (BS) to dentin and the sealer/dentin interface after different final irrigation solutions (NaOCl, EDTA, and chitosan). Sixty-four maxillary canines were distributed into two groups (n=30): non-irradiated and irradiated with 60 Gy. Canals were prepared with Reciproc-R50 and subdivided (n=10) for final irrigation (NaOCl, EDTA, chitosan) and filled. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0121DOI Listing
November 2018
15 Reads

Evaluation of chemokines and receptors in gnotobiotic root canal infection by F. nucleatum and E. faecalis.

Braz Oral Res 2018 Nov 29;32:e120. Epub 2018 Nov 29.

Universidade Federal de Minas Gerais - UFMG, Faculty of Dentistry, Department of Restorative Dentistry, Belo Horizonte, MG, Brazil.

The present study aims to evaluate the longitudinal effects of induced experimental infections in gnotoxenic animals on the expression of inflammatory chemokines and their receptors in periradicular tissues. The null hypothesis tested was that Enterococcus faecalis and Fusobacterium nucleatum had no effect on CCR5, CCL5, CXCL10, CCL2/MCP-1, CXCR2 and CCR1 expression. Two groups of five animals (n = 5) aged between 8 and 12 weeks were used in this study. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0120DOI Listing
November 2018
3 Reads

Assessment of toxicity and oxidative DNA damage of sodium hypochlorite, chitosan and propolis on fibroblast cells.

Braz Oral Res 2018 Nov 29;32:e119. Epub 2018 Nov 29.

Aksaray University, Faculty of Medicine, Department of Biology, Aksaray, Turkey.

The objective of this study was to evaluate and compare the cytotoxicity and genotoxicity on human fibroblast cell lines of sodium hypochlorite (NaOCl), chitosan and propolis as root canal irrigating solutions. Human fibroblast cells were exposed to chitosan, propolis and NaOCl for 4 and 24 h. Cell viability was assessed by 2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide, and oxidative DNA damage was assessed by determination of 8-hydroxydeoxyguanosine (8-OHdG) level with an ELISA kit. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0119DOI Listing
November 2018
3 Reads

Influence of ceramic material, thickness of restoration and cement layer on stress distribution of occlusal veneers.

Braz Oral Res 2018 Nov 29;32:e118. Epub 2018 Nov 29.

Universidade Estadual Paulista - Unesp, Instituto de Ciência e Tecnologia, Department of Dental Materials and Prosthodontics, Post-Graduate Program in Restorative Dentistry (Prosthodontic), São José dos Campos, SP, Brazil.

The aim of this study was to evaluate stress distribution in an occlusal veneer according to the restorative material, restoration thickness, and cement layer thickness. A tridimensional model of a human maxillary first molar with an occlusal veneer preparation was constructed using a modeling software of finite element analysis. The model was replicated 9 times to evaluate the factors: restoration thickness (0. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0118DOI Listing
November 2018
4 Reads

Quality of life and mastication in denture wearers and cleft lip and palate adults.

Braz Oral Res 2018 Nov 29;32:e113. Epub 2018 Nov 29.

Pontifícia Universidade Católica do Rio Grande do Sul - PUC-RS, Dental School, Porto Alegre, RS, Brazil.

The impact of oral rehabilitation on masticatory function and oral health-related quality of life (OHRQoL) may vary with the experience of the individual with tissue loss. Our hypothesis is that patient-centered outcomes vary among adults who have experienced large defects in the maxilla due to congenital or acquired conditions even after oral rehabilitation to restore aesthetics and function. This study compared OHRQoL, perceived masticatory ability, maximum bite force (MBF), and symptoms of pain and depression among subjects with acquired (edentulous maxilla) and congenital (cleft lip and palate) loss of oral tissues in the maxilla after dental treatment. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0113DOI Listing
November 2018
18 Reads

Light curing resin cements containing iodonium salts promote suitable apical bonding of posts to radicular dentin.

Braz Oral Res 2018 Nov 14;32:e116. Epub 2018 Nov 14.

Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Restorative Dentistry, Piracicaba, SP, Brazil.

The aim of this study was to analyze the efficiency of experimental light-curing resin cements (ERCs) with a ternary photo-initiator system containing diphenyliodonium hexafluorphosphate (DPI) and different amines on retention of glass-fiber posts to dentin (GFP). ERCs formulations: a 1:1 mass ratio of 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenylpropane and triethyleneglycol dimethacrylate. Camphorquinone was used as initiator. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0116DOI Listing
November 2018
19 Reads

Efficacy of stem cells on bone consolidation of distraction osteogenesis in animal models: a systematic review.

Braz Oral Res 2018 Nov 14;32:e83. Epub 2018 Nov 14.

Universidade de São Paulo - USP, School of Dentistry, Department of Stomatology, São Paulo, SP, Brazil.

Distraction osteogenesis (DO) relies on the recruitment and proliferation of mesenchymal stem cells (MSC) to the target site, where they differentiate into osteoblasts to promote bone formation. Nevertheless, MSC recruitment appears to be slow and limits bone formation in DO defects. Thus, this systematic review aims to evaluate the ability of locally applied MSC to enhance bone formation in DO preclinical models. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0083DOI Listing
November 2018
5 Reads

Immunohistochemical expression of RANKL in oral giant cell lesions is predictive of aggressiveness.

Braz Oral Res 2018 Oct 29;32:e115. Epub 2018 Oct 29.

Universidade Federal de Santa Catarina - UFSC, Department of Pathology, Florianópolis, Santa Catarina, Brazil.

The aim of this study was to evaluate the immunohistochemical expression of receptor activator of nuclear factor kappa-B ligand (RANKL) and of osteoprotegerin (OPG), important proteins correlated with osteoclastogenesis, in central giant cell lesions (CGCL) and peripheral giant cell lesions (PGCL) and to compare their expression with the histological and clinical parameters for quantification of multinucleated giant cells (MGC) and their nuclei, lesion size, and recurrences. Twenty cases of each lesion type were selected to quantify the number of MGCs and nuclei/mm2 of connective tissue. The immunoreactivity of RANKL and OPG was expressed as a percentage of the marked area in the stroma. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0115DOI Listing
October 2018
1 Read

Exploratory and confirmatory factorial analysis of the OHIP-Edent instrument.

Braz Oral Res 2018 Oct 29;32:e111. Epub 2018 Oct 29.

Aarhus University, Department of Dentistry and Oral Surgery, Denmark.

Several instruments have been used to measure oral health-related quality of life (OHRQoL). The Oral Health Impact Profile (OHIP) questionnaire was based on the concept that sequential events related to oral diseases can cause discomfort, functional limitations and consequently, result in dysfunctions and even disabilities. There are few studies in the literature that structurally analyze the instruments to verify whether they measure the requirements to which they were designed to. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0111DOI Listing
October 2018
16 Reads

Influence of preheating and post-curing on a novel fiber-reinforced composite post material.

Braz Oral Res 2018 Oct 29;32:e97. Epub 2018 Oct 29.

Universidade Federal de Goiás - UFG, Dentistry School, Department of Restorative and Operative Dentistry, Goiânia, GO, Brazil.

The aim of this study was to investigate the influence of preheating and post-curing methods on diametral tensile strength (DTS), flexural strength (FS), knoop microhardness (KHN), and degree of conversion (DC) of an experimental fiber-reinforced composite (FRC). Specimens (30 wt% of 3-mm-short E-glass fiber, 22.5 wt% of methacrylated-based resin and 47. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0097DOI Listing
October 2018
1 Read

The effects of smoking on the expression of gelatinases in chronic periodontitis: a cross-sectional study.

Braz Oral Res 2018 Oct 25;32:e114. Epub 2018 Oct 25.

Baskent University, Faculty of Medicine, Department of Pathology, Bahçelievler, Ankara, Turkey.

Smokers have a risk of developing periodontal disease. Matrix metalloproteinases (MMP) play a significant role in periodontal tissue destruction. In this study possible relationship between smoking and gingival tissue expression of gelatinases in chronic periodontitis patients relative to periodontally healthy subjects was investigated. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0114DOI Listing
October 2018
3 Reads

Edema and gingival bleeding in anterior region have a negative influence on quality of life of adolescents.

Braz Oral Res 2018 Oct 25;32:e112. Epub 2018 Oct 25.

Universidade Federal de Santa Maria - UFSM, Faculty of Dentistry, Department of Stomatology, Santa Maria, RS, Brazil.

The aim of the present study was to verify if clinical signs of gingivitis such as color changes, edema, and bleeding in the anterior region influence the OHRQoL of adolescents. We followed a cross-sectional convenience sample of 67 adolescents aged 11 to 16 years receiving dental treatment at the Federal University of Santa Maria (UFSM), in southern Brazil. The participants were evaluated for the following clinical variables: edema, gingival color alteration, and marginal bleeding of the gingival tissues, collected at 6 sites per tooth in the anterior region of the mouth. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0112DOI Listing
October 2018
17 Reads

Can implant surfaces affect implant stability during osseointegration? A randomized clinical trial.

Braz Oral Res 2018 Oct 25;32:e110. Epub 2018 Oct 25.

Universidade Federal de Pelotas - UFPel, School of Dentistry, Department of Restorative Dentistry, Pelotas, RS, Brazil.

This randomized clinical trial evaluated the insertion torque (IT), primary, and secondary stability of dental implants with different surface treatments during the osseointegration period. Nineteen patients with bilateral partial edentulism in the posterior mandibular region were randomly allocated to two implant brand groups and received implants with different surface treatments in the opposite site of the arch: Osseotite and Nanotite or SLA and SLActive. During implant placement, the maximum IT was recorded using a surgical motor equipped with a graphical user interface. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0110DOI Listing
October 2018
3 Reads

Physicomechanical characterization and biological evaluation of bulk-fill composite resin.

Braz Oral Res 2018 Oct 25;32:e107. Epub 2018 Oct 25.

Universidade de Pernamburco - UPE, Department of Dentistry, Tabatinga Camarajibe, PE, Brazil.

The aim of this study was to evaluate the cytotoxic effect, degree of conversion (% DC), Vickers hardness (VH), and surface morphology of composite resins. Eleven resins, nine bulk-fill resins, and two conventional resins were evaluated. Each material was sampled to evaluate DC (using FTIR), VH, cytotoxicity (using MTT and Neutral Red - NR test), surface morphology (using SEM and AFM), and organic filler (using EDS). Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0107DOI Listing
October 2018
3 Reads

Can heat-pressed feldspathic ceramic be submitted to multiple heat-pressing?

Braz Oral Res 2018 Oct 25;32:e106. Epub 2018 Oct 25.

Universidade Estadual Paulista - Unesp, Institute of Science and Technology, Department of Dental Materials and Prosthodontics, São José dos Campos, SP, Brazil.

The aim of this study was to determine if multiple processing (heat-pressing) of a dental ceramic influences flexural strength, hardness, and microstructure. Ninety bar-shaped specimens (15 mm × 4 mm × 2 mm) of a pressed ceramic (Vita PM9) were fabricated and randomly divided into 6 groups (n = 15) according to the factors "number of pressings" (C1, C2, and C3, fired 1, 2, and 3 times, respectively) and "mechanical cycling" (M). Half of the specimens were mechanically cycled (106 cycles, 45 N, 3. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0106DOI Listing
October 2018
2 Reads

Factors associated with the non-wear of mandibular dentures in the Brazilian public primary health care.

Braz Oral Res 2018 Oct 25;32:e100. Epub 2018 Oct 25.

Universidade Federal de Minas Gerais - UFMG, Department of Social and Preventive Dentistry, Belo Horizonte, MG, Brazil.

This study investigated factors that affect the use of complete conventional mandibular dentures (CCMD) by patients of the Brazilian Public Health Service. For this, two hundred and thirty one subjects who received CCMD in the Primary Health Care of the Public Health Service in Belo Horizonte - Brazil were evaluated and divided in Group 1 - irregular/non-wear; Group 2 - regular wear. Multivariate logistic regression analysis was used to create predictive models for CCMD non-wear and included socio-demographic and biological variables, technical quality of CCMD, and user satisfaction. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0100DOI Listing
October 2018
3 Reads

Effects of the photobiomodulation using different energy densities on the periodontal tissues under orthodontic force in rats with type 2 diabetes mellitus.

Braz Oral Res 2018 Oct 25;32:e61. Epub 2018 Oct 25.

Universidade do Estado de São Paulo - Unesp, Institute of Science and Technology, Center of Biosciences Applied to Patients with Special Health Care Needs, São Jose dos Campos Campus, SP, Brazil.

To evaluate the impact of the GaAlAs diode laser with energy densities of 160 J/cm2, 320 J/cm2, and 640 J/cm2 on the periodontal tissues under continuous orthodontic force application and on the rate of orthodontic tooth movement in rats with type-2 diabetes mellitus. The intensity of primary alveolar bone formation was also investigated through the immune-positive osteocytes for OPN antibody. Forty adult male Wistar rats were divided into eight groups of 5 rats: normoglycemic (N), 160 J-laser-normoglycemic (160 J-LN), 320 J-laser-normoglycemic (320 J-LN), 640 J-laser-normoglycemic (640 J-LN), diabetic (D), 160 J-laser-diabetic (160 J-LD), 320 J-laser-diabetic (320 J-LD), and 640 J-laser-diabetic (640 J-LD) rats. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0061DOI Listing
October 2018
2 Reads