11,428 results match your criteria tooth surfaces


Impact of High-Altitude Hypoxia on Early Osseointegration With Bioactive Titanium.

Front Physiol 2021 18;12:689807. Epub 2021 Nov 18.

Department of Periodontology and Implantology, Stomatological Hospital, Southern Medical University, Guangzhou, China.

Nowadays, the bone osseointegration in different environments is comparable, but the mechanism is unclear. This study aimed to investigate the osseointegration of different bioactive titanium surfaces under normoxic or high-altitude hypoxic environments. Titanium implants were subjected to one of two surface treatments: (1) sanding, blasting, and acid etching to obtain a rough surface, or (2) extensive polishing to obtain a smooth surface. Read More

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November 2021

Effect of prophylactic instrumentation on surface roughness of tooth-colored restorative material: An study.

J Conserv Dent 2021 May-Jun;24(3):231-235. Epub 2021 Dec 8.

Department of Conservative and Endodontics, Subharti Dental College, Meerut, Uttar Pradesh, India.

Aim: To compare and evaluate the surface characteristics of different restorative materials used for restoration of cervical defects when subjected to periodontal prophylactic instrumentation techniques.

Materials And Methodology: Sixty box-shaped cavities were prepared on the labial surface of decoronated permanent maxillary anterior teeth which were randomly divided into two groups ( = 30) based on the instrumentation technique Group I: Manual instrumentation using curettes and Group II: Ultrasonic instrumentation. The samples were further divided into three subgroups based on restorative material subgroups I V and II V-restored with Vitremer, subgroups I F and II F-restored with Filtek Z 250 XT and subgroups I D and II D-restored with Dyract flow, respectively. Read More

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December 2021

What characterizes effective tooth brushing of daily users of powered versus manual toothbrushes?

BMC Oral Health 2022 Jan 16;22(1):10. Epub 2022 Jan 16.

Department of Medicine, Justus-Liebig-University Giessen, Klinikstr. 29, 35392, Giessen, Germany.

Background: Recent data show comparable deficits in oral cleanliness after tooth brushing in habitual users of powered toothbrushes (PT) and manual toothbrushes (MT). The present analysis explores the origin of these deficits by relating aspects of the observed tooth brushing behaviour to plaque after tooth brushing.

Methods: Users of rotating-oscillating PT (N = 48) and of MT (N = 52) brushed their teeth the best they could while being filmed. Read More

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January 2022

Analysis of the relationship between the surface topography of prepared tooth surfaces and data quality of digital impressions from an intraoral scanner.

J Dent Sci 2022 Jan 31;17(1):545-550. Epub 2021 Jul 31.

New York University College of Dentistry, Department of Prosthodontics, New York, NY, USA.

Background/purpose: With the rise of digitalization in dentistry, intraoral scanners and digital impressions have recently been adopted by many clinicians. The aim of this study was to investigate surface topography of prepared teeth and the accuracy of digital impressions.

Materials And Methods: Twenty mandibular typodonts, containing left first premolar and left first molar abutment teeth manufactured by using CAD/CAM, were used in this study. Read More

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January 2022

Morphological aspects in remineralizing potential of Silver Diamine Fluoride.

Rom J Morphol Embryol 2021 Apr-Jun;62(2):537-543

Department of Prostheses Technology and Dental Materials, Faculty of Dental Medicine, Victor Babeş University of Medicine and Pharmacy, Timişoara, Romania;

Objectives: The purpose of this study was to demonstrate the efficacy of Silver Diamine Fluoride (SDF) antibacterial solution in penetrating the demineralized areas of enamel.

Materials And Methods: It was considered a group of four extracted teeth (with no color fading, fissures, decay, or demineralization). Each tooth was sectioned in two equal parts, in mesio-distal direction, using a dental handpiece and a special rounded, flat bur. Read More

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January 2022

Linear and volumetric wear of conventional and milled denture teeth.

J Esthet Restor Dent 2022 Jan 11. Epub 2022 Jan 11.

Division of Comprehensive Oral Health, University of North Carolina Adams School of Dentistry, Chapel Hill, North Carolina, USA.

Objective: The purpose of this study was to compare the linear and volumetric wear of conventional and milled double-cross-linked polymethyl methacrylate, nano-composite, and nano-ceramic infused resin posterior denture teeth.

Methods: Double-cross-linked polymethyl methacrylate (PMMA) premolar teeth were scanned and used to mill denture teeth from a double-cross-linked PMMA resin disc and a nano-composite with nano-ceramic infused resin disc. The specimens (n = 8: conventional double-cross-linked PMMA resin teeth-DCL, milled double-cross-linked PMMA resin teeth-DCL-CAM, conventional nano-composite infused resin teeth with four layers composed of composite and PMMA resin teeth-NC, and milled nano-composite and nano-ceramic infused resin teeth-NC-CAM) underwent chewing simulation in the biaxial fatigue testing machine at 1. Read More

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January 2022

Analysis of an Herbal Ayurdantham Medicated Tooth liquid on Dentinal Tubule Occlusion using Scanning Electron Microscopy.

J Pharm Bioallied Sci 2021 Nov 10;13(Suppl 2):S1184-S1187. Epub 2021 Nov 10.

Department of Conservative Dentistry and Endodontics, JSS Dental College and Hospital, JSSAHER, Mysore, Karnataka, India.

Background: Dentin hypersensitivity is described as "short sharp pain arising from exposed dentin in response to various stimuli typically thermal, evaporative, tactile, osmotic or chemical and cannot be ascribed to any other form of dental defect or disease." Dentine hypersensitivity can be treated with various desensitizing agents ,where oral rinse has a promising effect in delivering the therapeutic effect all over the tooth surface including interproximal areas, as they can flow and reach areas where toothpastes are not much effective, hence the occlusion of dentinal tubules using Ayurdhantam medicated an herbal mouthwash was evaluated.

Methodology: Twenty such dentinal blocks were obtained; the surfaces of each dentin block were polished using a silicon carbide disc for 30 s to create a basic smear layer. Read More

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November 2021

Effect of the Use of Die Lubricant on the Marginal Fit of Wax Patterns.

J Pharm Bioallied Sci 2021 Nov 10;13(Suppl 2):S1115-S1118. Epub 2021 Nov 10.

Private Practitoner, Private Practice, Nashik, Maharashtra, India.

The aim of this study was to evaluate the effect of die lubricant on the fit of wax patterns. An ivorine tooth was prepared to receive full-coverage metal-ceramic restoration with 360° shoulder finish line. The tooth was duplicated 40 times using additional silicone. Read More

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November 2021

The effectiveness of behaviour change interventions delivered by non-dental health workers in promoting children's oral health: A systematic review and meta-analysis.

PLoS One 2022 11;17(1):e0262118. Epub 2022 Jan 11.

Department of Health Sciences, University of York, York, United Kingdom.

Objectives: Dental caries is the most common preventable childhood condition. Non-dental professionals and health workers are often well placed to support parents in adopting positive oral health behaviours for their children. The aim of this study was to determine the effectiveness of behaviour change interventions and their individual component behaviour change techniques (BCTs), that were delivered by non-dental professionals and health workers. Read More

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January 2022

Fluorescence-Aided Identification Technique (FIT) Improves Tooth Surface Clean-Up after Debonding of Buccal and Lingual Orthodontic Appliances.

J Clin Med 2021 Dec 31;11(1). Epub 2021 Dec 31.

Department of Pediatric Oral Health and Orthodontics, UZB-University Center for Dental Medicine, University of Basel, 4058 Basel, Switzerland.

The aim of this study was to evaluate the use of fluorescence inducing light to aid the clean-up of tooth surfaces after bracket removal when using buccal or lingual orthodontic appliances. Two full sets of dental arches using extracted human teeth were assembled, with 14 teeth per arch. All teeth were bonded on their buccal and lingual surfaces. Read More

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December 2021

Disruption of the (acetoin dehydrogenase) operon has wide-ranging effects on growth and stress response.

J Bacteriol 2022 Jan 10:jb0057821. Epub 2022 Jan 10.

Department of Oral Biology, University of Florida, Gainesville, Florida.

The agent largely responsible for initiating dental caries, produces acetoin dehydrogenase that is encoded by the operon. The operon consists of the and genes (E1 dehydrogenase), (E2 lipoylated transacetylase), (E3 dihydrolipoamide dehydrogenase), and (lipoyl ligase). Evidence is presented that AdhC interacts with SpxA2, a redox-sensitive transcription factor functioning in cell wall and oxidative stress responses. Read More

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January 2022

Guardian Reports of Children's Sub-optimal Oral Health Are Associated With Clinically Determined Early Childhood Caries, Unrestored Caries Lesions, and History of Toothaches.

Front Public Health 2021 24;9:751733. Epub 2021 Dec 24.

Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.

Parents'/guardians' perceptions of their children's oral health are useful proxies of their clinically determined caries status and are known to influence dental care-seeking behavior. In this study, we sought to examine (1) the social and behavioral correlates of fair/poor child oral health reported by guardians and (2) quantify the association of these reports with the prevalence of early childhood caries (ECC), unrestored caries lesions and toothaches. We used guardian-reported child oral health information (dichotomized as fair/poor vs. Read More

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December 2021

Effects of Bleaching Associated with Er:YAG and Nd:YAG Laser on Enamel Structure and Bacterial Biofilm Formation.

Scanning 2021 20;2021:6400605. Epub 2021 Dec 20.

Department of Endodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.

Objective: To compare the effects of bleaching associated with Er:YAG and Nd:YAG laser on enamel structure and mixed biofilm formation on teeth surfaces.

Materials And Methods: Sixty-eight enamel samples were randomly divided into four groups ( = 17), control, Opalescence Boost only, Opalescence Boost plus Er: YAG laser, and Opalescence Boost plus Nd:YAG laser. The structure was observed using SEM after bleaching. Read More

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January 2022

Triacrylamide-Based Adhesives Stabilize Bonds in Physiologic Conditions.

J Dent Res 2022 Jan 9:220345211061736. Epub 2022 Jan 9.

Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University, Portland, OR, USA.

In this study, an acrylamide-based adhesive was combined with a thiourethane-based composite to improve bond stability and reduce polymerization stress, respectively, of simulated composite restorations. The stability testing was conducted under physiologic conditions, combining mechanical and bacterial challenges. Urethane dimethacrylate was combined with a newly synthesized triacrylamide (TMAAEA) or HEMA (2-hydroxyethyl-methacrylate; control) to produce a 2-step total-etch adhesive system. Read More

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January 2022

Shear bond strength of ceramic laminate veneers to finishing surfaces with different percentages of preserved enamel under a digital guided method.

BMC Oral Health 2022 Jan 7;22(1). Epub 2022 Jan 7.

State Key Laboratory of Oral Diseases, Department of Prosthodontics, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14 Renmin South Road, 3rd section, Chengdu, 610041, Sichuan, People's Republic of China.

Background: The purpose of this in vitro study was to evaluate the effect of the percentages of preserved enamel on ceramic laminate veneers' (CLVs) shear bond strength (SBS).

Methods: Seventy extracted human maxillary central incisors were scanned and reconstructed into three-dimensional models. The extracted teeth were then embedded and randomly divided into seven groups (n = 10 per group). Read More

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January 2022

The application of honey in wound care of raw surface at spontaneous rupture submandibular abscess that extends to submental and right neck: A case report.

Int J Surg Case Rep 2022 Jan 9;90:106672. Epub 2021 Dec 9.

Otorhinolaryngology Head and Neck Surgery Department, Faculty of Medicine, Padjadjaran Universitas/Dr. Hasan Sadikin General Hospital, Bandung, Jl. Pasteur No. 38, Kec. Sukajadi, Bandung City, West Java 40161, Indonesia. Electronic address:

Introduction: Honey has been reported to accelerate wound healing. The use of honey in wound care mostly uses medicated (Manuka) honey. There are still few who report using Nusantara honey, local honey from Indonesia, as a wound dressing. Read More

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January 2022

DENTAL CARIES INTENSITY IN CHILDREN WITH DISTURBANCES IN TOOTH FORMATION, SURVIVED AFTER THE CHORNOBYL NPP ACCIDENT.

Authors:
S F Liubarets

Probl Radiac Med Radiobiol 2021 Dec;26:426-436

Bogomolets National Medical University of the Ministry of Health of Ukraine, 13 Tarasa Shevchenko Blvd., Kyiv, 01601, Ukraine.

Objective: assessment of dental caries intensity in children with disturbances in tooth formation living in radiologically contaminated territories as a result of the Chornobyl NPP accident.

Materials And Methods: Children aged 6-14 years old (n = 1470) suffering from disturbances in tooth formation(DTF) with the residents of radiologically contaminated territories (n = 528) among them were enrolled in the study.The DTF subtypes were assayed, namely the systemic enamel hypoplasia (SEH) and molar incisor hypomineralisation(MIH). Read More

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December 2021

[3D analysis of occlusal surfaces of teeth and their contacts. Part III. Development of a method for assessing the balance of occlusal contacts].

Authors:
A N Ryakhovsky

Stomatologiia (Mosk) 2021 ;100(6):50-55

National Medical Research Center of Dentistry and Maxillofacial Surgery, Moscow, Russia.

Objective: The aim of the study was to develop a technique for 3D analysis of the occlusal balance of teeth.

Material And Methods: The development was carried out on the basis of the Avantis 3D software («Avantis 3D» LLC, Russia) using teeth scans of 50 subjects with Class I and II (Division 1) malocclusion and different degree of tooth wear. The algorithm and formulas for calculating the balance of symmetry and antero-posterior occlusal balance are presented. Read More

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December 2021

Evaluation of Newly Introduced Bioactive Materials in Terms of Cavity Floor Adaptation: OCT Study.

Materials (Basel) 2021 Dec 12;14(24). Epub 2021 Dec 12.

Restorative Dentistry Department, King Abdulaziz University, P.O. Box 80209, Jeddah 21589, Saudi Arabia.

Objective: The aim of the present study was to evaluate the adaptation of newly introduced bioactive restorative materials to the cavity floor using cross-polarization optical coherence tomography (CP-OCT).

Materials And Methods: Round class V cavities were prepared on the proximal surfaces of sixty non-carious human anterior teeth (0.5 mm depth × 4 mm diameter), which were divided into groups according to the restorative material (n = 15). Read More

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December 2021

Vertical Root Fracture in Non-Endodontically and Endodontically Treated Teeth: Current Understanding and Future Challenge.

J Pers Med 2021 Dec 16;11(12). Epub 2021 Dec 16.

School of Dentistry, College of Medicine, National Taiwan University, Taipei 100229, Taiwan.

A vertical root fracture (VRF) is a complex complication that usually leads to tooth extraction. The aim of this article is to review the prevalence, demography, distribution, diagnostic methods, etiology and predisposing factors, clinical features, radiographic characteristics and treatment strategies of VRFs in non-endodontically treated teeth (VRFNETT) and endodontically treated teeth (VRFETT). Search terms for each subject related to VRFNETT and VRFETT were entered into MEDLINE, PubMed and Google Scholar. Read More

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December 2021

Evaluation of a Near-Infrared Light Transillumination Device for Caries Detection in Interproximal Primary Molar Surfaces.

J Dent Child (Chic) 2021 Sep;88(3):180-186

Dr. Koerber is a professor, Department of Oral Medicine, College of Dentistry, University of Illinois Chicago, Chicago, Ill., USA.

To evaluate the sensitivity and specificity of the near-infrared light transillumination caries detection method by using DEXIS CariVu (DCV) for imaging of interproximal primary molar surfaces (IPMS).
A retrospective evaluation of patient records at a university pediatric dentistry (PD) clinic identified 22 patients with unrestored IPMS, which had images of both bitewing radiography (BW) and DCV. A scoring system (no caries, incipient caries, dentinal caries) was developed for the study. Read More

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September 2021

Body Mass Index and Early Childhood Caries in High Caries Risk Children: A Nested Case-Control Methodological Investigation.

J Dent Child (Chic) 2021 Sep;88(3):156-163

Dr. Childers is a professor emeritus, Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Ala., USA.

To evaluate body mass index (BMI) - early childhood caries (ECC) relationships with various BMI expressions.
Healthy eight- to 18-month children with unerupted molar(s) were conveniently sampled from Uniontown, Ala., USA, a high caries risk community (i. Read More

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September 2021

Effect of saliva contamination on the bond strength of single-step and three-step adhesive systems.

Eur J Oral Sci 2021 Dec 22. Epub 2021 Dec 22.

Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway.

The aim of this study was to evaluate the effect of saliva contamination on bond strength to dentin with an etch-and-rinse and a self-etch adhesive system. For each of these adhesive systems, the dentin surface of 24 human molars were allocated to one of four groups representing different saliva contamination scenarios. Saliva was applied at different stages in the bonding process, and was investigated to be remedied by water rinsing and/or air drying. Read More

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December 2021

Efficacy of Silver Diamine Fluoride on Count Present in Saliva.

Int J Clin Pediatr Dent 2021 Sep-Oct;14(5):700-704

Department of Pediatric and Preventive Dentistry, Santosh Dental College and Hospitals, Ghaziabad, Uttar Pradesh, India.

Aim And Objective: Evaluate the efficacy and longevity of silver diamine fluoride (SDF) to inhibit the dental caries initiator bacteria; count in saliva.

Study Design: Twenty children having class I and II dental caries with no prior restorations were included in the study. Unstipulated saliva samples were collected before and immediately after application of SDF, 1, 3, and 6 months after application, and intergroup comparison was done. Read More

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December 2021

Synthesis, characterization and evaluation of azobenzene nanogels for their antibacterial properties in adhesive dentistry.

Eur J Oral Sci 2021 Dec 19. Epub 2021 Dec 19.

Department of Craniofacial Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.

The presence of cariogenic bacteria within the prepared tooth cavity at the adhesive resin-dentin interface is detrimental to the long-term stability and function of composite restorations. Here, we report the synthesis and incorporation of methacrylated azobenzene nanogels within bisphenol A-glycidyl methacrylate/hydroxyethyl methacrylate/ethanol (B/H/E) adhesive resins and evaluate their ability to reduce the bacterial invasion of cariogenic Streptococcus mutans biofilms while preserving the mechanical strength and structural integrity of the critical interfacial connection between the restoration and the tooth. The azobenzene nanogel, with a hydrodynamic radius of < 2 nm and a molecular weight of 12,000 Da, was polymerized within B/H/E adhesive formulations at concentrations of 0. Read More

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December 2021

Culture and characterization of various porcine integumentary-connective tissue-derived mesenchymal stromal cells to facilitate tissue adhesion to percutaneous metal implants.

Stem Cell Res Ther 2021 Dec 18;12(1):604. Epub 2021 Dec 18.

Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD, 20814, USA.

Background: Transdermal osseointegrated prosthesis have relatively high infection rates leading to implant revision or failure. A principle cause for this complication is the absence of a durable impervious biomechanical seal at the interface of the hard structure (implant) and adjacent soft tissues. This study explores the possibility of recapitulating an analogous cellular musculoskeletal-connective tissue interface, which is present at naturally occurring integumentary tissues where a hard structure exits the skin, such as the nail bed, hoof, and tooth. Read More

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December 2021

Randomized clinical trial to evaluate two methods of caries risk assessment in schoolchildren: the CARDEC-PEL 04 study protocol.

BMC Oral Health 2021 Dec 18;21(1):654. Epub 2021 Dec 18.

Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil.

Background: Caries risk assessment is an essential element for managing and preventing dental caries in children. Individual caries risk assessment can be conducted to evaluate the presence or absence of single factors, or using multivariate models, a combination of factors. The subject has been extensively studied, but no previous research has compared whether a more elaborate and individualized method of caries risk benefits the patient than more straightforward strategies. Read More

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December 2021

Shear bond strengths of two newly marketed self-adhesive resin cements to different substrates: A light and scanning electron microscopy evaluation.

Microsc Res Tech 2021 Dec 18. Epub 2021 Dec 18.

Department of Restorative Dentistry, School of Dentistry, Hacettepe University, Ankara, Turkey.

The purpose of this in vitro study was to compare the shear bond strengths (SBSs) of two newly marketed self-adhesive resin cements (RCs) to enamel, dentin, and lithium disilicate (LiSi) glass ceramic block. Forty-eight enamel and 48 dentin substrates were obtained from sound human molars. Additionally, 6 × 7 × 5 -mm- sized 24 specimens were produced from LiSi glass ceramic blocks. Read More

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December 2021

Does motivational interviewing promote oral health in adolescents?

Authors:
Hollie Hawrot

Evid Based Dent 2021 12 16;22(4):134-135. Epub 2021 Dec 16.

Leeds Dental Institute, Leeds, UK.

Design In total, 15 secondary schools were designated to one of three groups: (I) prevailing health education (PHE); (II) motivational interviewing (MI); and (III) MI with interactive dental caries risk assessment (MI + RA). Adolescents (n = 512) with negative oral health patterns (irregular tooth brushing and/or regular snacking) were recruited from groups I-III; 161, 163 and 188, respectively. Selected candidates received interventions corresponding to their assigned group. Read More

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December 2021