1,520 results match your criteria Brazilian oral research[Journal]


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
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

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

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

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

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
1 Read

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

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
12 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
1 Read

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
11 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
13 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
8 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
2 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
2 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
12 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
10 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
4 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
11 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
2 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
8 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
2 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
1 Read

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
1 Read

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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October 2018
2 Reads

How biomechanics can affect the endodontic treated teeth and their restorative procedures?

Braz Oral Res 2018 Oct 18;32(suppl 1):e76. Epub 2018 Oct 18.

University of Tennessee Health Science Center, College of Dentistry, Department of Bioscience Research, Memphis, TE, USA.

Endodontic treatment is a common dental procedure used for treating teeth which the pulp tissue has become irreversibly inflamed or necrotic as a result of the carious process or dental trauma. This procedure which involves mechanical and chemical preparation of root canal may affect several mechanical and physical properties of the tooth structure. The endodontic treatment can also influence the longevity of the rehabilitation of endodontically treated teeth and biomechanics during the oral function. Read More

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October 2018
2 Reads

Pulp canal obliteration after traumatic injuries in permanent teeth - scientific fact or fiction?

Braz Oral Res 2018 Oct 18;32(suppl 1):e75. Epub 2018 Oct 18.

Pontifícia Universidade Católica de Minas Gerais - PUC-MG, Department of Dentistry, Belo Horizonte, MG, Brazil.

Pulp canal obliteration (PCO) is a frequent finding associated with pulpal revascularization after luxation injuries of young permanent teeth. The underlying mechanisms of PCO are still unclear, and no experimental scientific evidence is available, except the results of a single histopathological study. The lack of sound knowledge concerning this process gives rise to controversies, including the most suitable denomination. Read More

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October 2018
11 Reads

Current options concerning the endodontically-treated teeth restoration with the adhesive approach.

Braz Oral Res 2018 Oct 18;32(suppl 1):e74. Epub 2018 Oct 18.

University of Southern California - USC, Herman Ostrow School of Dentistry, Division of Restorative Sciences, Los Angeles, CA, USA.

Adhesive procedures have changed the way to restore endodontically treated teeth (ETT). It started with the shift from cast post-and-core to fiber post. The original focus on strength also shifted towards failure modes, revealing that catastrophic failures are still a concern when restoring endodontically-treated teeth even with fiber posts. Read More

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October 2018
4 Reads

Root perforations: a review of diagnosis, prognosis and materials.

Braz Oral Res 2018 Oct 18;32(suppl 1):e73. Epub 2018 Oct 18.

Universidade de Cuiabá, Faculdade de Odontologia, Departamento de Endodontia, Cuiabá, MT, Brasil.

Root perforation results in the communication between root canal walls and periodontal space (external tooth surface). It is commonly caused by an operative procedural accident or pathological alteration (such as extensive dental caries, and external or internal inflammatory root resorption). Different factors may predispose to this communication, such as the presence of pulp stones, calcification, resorptions, tooth malposition (unusual inclination in the arch, tipping or rotation), an extra-coronal restoration or intracanal posts. Read More

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October 2018
20 Reads

Current trends of genetics in apical periodontitis research.

Braz Oral Res 2018 Oct 18;32(suppl 1):e72. Epub 2018 Oct 18.

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

Genetics is an emerging topic in endodontic research focusing on the host response regarding the pathogenesis of apical periodontitis (AP). A number of genetic epidemiological studies carried out by many investigators worldwide have shown evidence of an association between certain candidate genes and AP. Some studies have been conducted on knockout mice with a deficiency in certain proteins, leading to more or less severe AP, and thus suggesting a pivotal role of these genes in AP pathogenesis. Read More

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October 2018
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Dendritic cells and their relation to apical peridontitis.

Braz Oral Res 2018 Oct 18;32(suppl 1):e71. Epub 2018 Oct 18.

Pontifícia Universidade Católica do Rio Grande do Sul - PUCRS, School of Dentistry, Clinical Department, Porto Alegre, RS, Brazil.

The purpose of this manuscript was to re-discuss apical periodontitis, apical biofilm, and its possible relationship with dendritic cells (DC). DCs are potent regulators of the immune system and their function is divided into three categories that involve the presentation of antigens: the presentation of antigens and activation of T cells; a not well established category suggested that DCs induce and maintain immunological tolerance; and the maintenance of the immune memory in conjunction with B cells. DCs in periapical inflammatory lesions are composed of at least two subpopulations that can be distinguished on the basis of ultrastructure and phenotype. Read More

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October 2018
3 Reads

Tricalcium silicate-based cements: properties and modifications.

Braz Oral Res 2018 Oct 18;32(suppl 1):e70. Epub 2018 Oct 18.

University of Birmingham, School of Dentistry, Birmingham, United Kingdom.

Mineral trioxide aggregate (MTA) has been widely used for different reparative procedures in endodontics. The extensive use of this cement for pulp capping, apexifications, apical surgeries, and revascularization is related to its ability to induce tissue repair and to stimulate mineralization. Several research studies have tested modifications in the composition of MTA-based cements in order to enhance their clinical performance. Read More

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October 2018
3 Reads
0.774 Impact Factor

Etiologic role of root canal infection in apical periodontitis and its relationship with clinical symptomatology.

Braz Oral Res 2018 Oct 18;32(suppl 1):e69. Epub 2018 Oct 18.

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

Evidence shows the polymicrobial etiology of endodontic infections, in which bacteria and their products are the main agents for the development, progression, and dissemination of apical periodontitis. Microbial factors in necrotic root canals (e.g. Read More

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October 2018
7 Reads

Endodontic medicine: interrelationships among apical periodontitis, systemic disorders, and tissue responses of dental materials.

Braz Oral Res 2018 Oct 18;32(suppl 1):e68. Epub 2018 Oct 18.

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

Endodontic medicine, which addresses the bidirectional relationship between endodontic infections and systemic diseases, has gained prominence in the field of endodontics. There is much evidence showing that while systemic disease may influence the pathogenesis of endodontic infection, endodontic infection can also cause systemic alterations. These alterations include more severe bone resorption and inflammation in the periapical area as well as enhanced systemic disease symptoms. Read More

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October 2018
11 Reads

Nickel-titanium instruments in endodontics: a concise review of the state of the art.

Braz Oral Res 2018 Oct 18;32(suppl 1):e67. Epub 2018 Oct 18.

Universidade Christus, Department of Dentistry, Post graduation Program in Dental Sciences, Fortaleza, CE, Brazil.

The introduction of automated instrumentation in endodontics represented a major advance in progress for this specialty, with improvements in the quality and predictability of root canal preparation and a significant reduction in procedural errors. In recent years, endodontic instruments have undergone a series of changes brought about by modifications in design, surface treatments, and thermal treatments. In addition, new movements have also been incorporated to offer greater safety and efficiency, optimizing the properties of the NiTi alloy, especially through eccentric rotary motion. Read More

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October 2018
9 Reads

Root canal preparation using micro-computed tomography analysis: a literature review.

Braz Oral Res 2018 Oct 18;32(suppl 1):e66. Epub 2018 Oct 18.

Universidade de Ribeirão Preto, Faculty of Dentistry, Ribeirão Preto, SP, Brazil.

This literature review has critically analyzed the published research related to the biomechanical preparation of root canals with three-dimensional analysis using micro-computed tomography (micro-CT). In December 2017, six databases (PubMed, Cochrane, Web of Science, Embase, Scopus, and Science Direct) were accessed using keywords to find articles including the use of the micro-CT analysis in biomechanical root canal preparation. There were 60 full articles that were selected, which were screened and read by two authors. Read More

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October 2018
16 Reads

Unprepared root canal surface areas: causes, clinical implications, and therapeutic strategies.

Braz Oral Res 2018 Oct 18;32(suppl 1):e65. Epub 2018 Oct 18.

Private practice, Cetraro, Italy.

Chemomechanical preparation is intended to clean, disinfect, and shape the root canal. This step is of utmost importance during treatment of infected teeth with apical periodontitis, because treatment outcome depends on how effectively the clinician eliminates bacteria, their products, and necrotic tissue that would serve as substrate for bacterial regrowth. Nonetheless, curvatures and complex internal anatomical variations of the root canal system can pose a high degree of difficulty in reaching these goals. Read More

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October 2018
10 Reads

The role of human milk and sucrose on cariogenicity of microcosm biofilms.

Braz Oral Res 2018 Oct 11;32:e109. Epub 2018 Oct 11.

Universidade Federal de Pelotas - UFPel, School of Dentistry, Graduate Program in Dentistry, Pelotas, RS, Brazil.

This study investigated the effect of human milk, alone and associated with sucrose, in the cariogenicity of biofilms in a microcosm biofilm model and compared with the cariogenicity of sucrose and bovine milk. Microcosm biofilms were grown in enamel discs in 24-well plates. Six growth conditions were studied: DMM (chemically defined artificial saliva - negative control), DMM with 1% of sucrose (DMM+s) (positive control), human milk with DMM, human milk with DMM+s, bovine milk with DMM, and bovine milk with DMM+s. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0109DOI Listing
October 2018
15 Reads

Experimental furcal perforation treated with mineral trioxide aggregate plus selenium: immune response.

Braz Oral Res 2018 Oct 11;32:e103. Epub 2018 Oct 11.

Universidade Federal de Minas Gerais - UFMG, School of Dentistry, Departament of Operative Dentistry, Belo Horizonte, MG, Brazil.

The aim of this study is to evaluate the expression of cytokines in response to mineral trioxide aggregate (MTA) plus selenium in germ-free mice with experimental furcal perforation. The first left maxillary molar was opened, and the furcal area was perforated and treated with post-MTA-Se (experimental group). The same surgical intervention was performed for the maxillary right first molar, which was treated with MTA (control group). Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0103DOI Listing
October 2018
2 Reads

Influence of ethanol-wet dentin, adhesive mode of application, and aging on bond strength of universal adhesive.

Braz Oral Res 2018 Oct 11;32:e102. Epub 2018 Oct 11.

Universidade Estadual Paulista - Unesp, Institute of Science and Technology, Department of Restorative Dentistry, São José dos Campos, SP, Brazil.

The aim of this study was to evaluate the effect of ethanol on the bond longevity of a universal adhesive system to bovine dentin, under different modes of adhesive application and artificial aging. Bovine dentin was exposed, and the smear layer was standardized by sandpaper polishing. Specimens were randomly divided into 2 groups: ethanol (E) and non-ethanol (N). Read More

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October 2018
14 Reads

Influence of head and linear growth on the development of malocclusion at six years of age: a cohort study.

Braz Oral Res 2018 Oct 11;32:e98. Epub 2018 Oct 11.

Universidade Federal de Pernambuco - UFPE, Department of Social Dentistry, Recife, PE, Brazil.

The aim of this article was to evaluate the influence of biological and sociobehavioral factors on the development of malocclusions in children. This is a cross-sectional study nested in a cohort of 350 children who participated in a community intervention study. After six years, an active search identified 290 children with occlusal abnormalities. Read More

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http://dx.doi.org/10.1590/1807-3107bor-2018.vol32.0098DOI Listing
October 2018
3 Reads