8,126 results match your criteria tooth wear

Potential of different fluoride gels to prevent erosive tooth wear caused by gastroesophageal reflux.

BMC Oral Health 2021 Apr 9;21(1):183. Epub 2021 Apr 9.

Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland.

Background: This in-vitro-study aimed to evaluate the potential of different fluoride gels to prevent gastroesophageal reflux induced erosive tooth wear.

Methods: Surface baseline profiles of a total of 50 bovine enamel specimens [randomly assigned to five groups (G1-5)] were recorded. All specimens were positioned in a custom made artificial oral cavity and perfused with artificial saliva (0. Read More

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O Savchuk V Krasnov

Georgian Med News 2021 Feb(311):63-67

Interregional Academy of Personnel Management, Faculty of Dentistry PJSC, Ukraine.

Excessive tooth wear is currently one of the main problems of oral health. Excessive tooth wear affects both function and aesthetics. Teeth with excessive tooth wear cannot be effectively used for biting and chewing food. Read More

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February 2021

Oral processing, sexual selection, and size variation in the circumorbital region of Colobus and Piliocolobus.

Am J Phys Anthropol 2021 Apr 3. Epub 2021 Apr 3.

Department of Anthropology, The Ohio State University, Columbus, Ohio, USA.

Objectives: The function of the browridge in primates is a subject of enduring debate. Early studies argued for a role in resisting masticatory stresses, but recent studies have suggested sexual signaling as a biological role. We tested associations between circumorbital form, diet, oral processing, and social behavior in two species of colobus monkey-the king colobus (Colobus polykomos) and western red or bay colobus (Piliocolobus badius). Read More

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Amino acid δ15N differences consistent with killer whale ecotypes in the Arctic and Northwest Atlantic.

PLoS One 2021 2;16(4):e0249641. Epub 2021 Apr 2.

Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada.

Ecotypes are groups within a species with different ecological adaptations than their conspecifics. Eastern North Pacific (ENP) killer whale (Orcinus orca) ecotypes differ in their diet, behavior, and morphology, but the same is not known for this species in the eastern Canadian Arctic (ECA) and Northwest Atlantic (NWA). Using compound-specific stable isotope analysis (CSIA) of amino acids (AAs), we compared δ15N patterns of the primary trophic and source AA pair, glutamic acid/glutamine (Glx) and phenylalanine (Phe), in dentine collagen of (1) sympatric ENP killer whale ecotypes with well-characterized diet differences and (2) ECA/NWA killer whales with unknown diets. Read More

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Effect of dentifrice slurry abrasivity and erosive challenge on simulated non-carious cervical lesions development in vitro.

J Oral Sci 2021 ;63(2):191-194

Department of Cariology, Operative Dentistry, and Dental Public Health, School of Dentistry, Indiana University, Oral Health Research Institute.

Purpose: To investigate the effect of slurry abrasive levels and acidic challenges on the development of non-carious cervical lesions.

Methods: Ninety-six extracted upper premolars were affixed in pairs to acrylic blocks and had their root surfaces covered by acrylic resin except for 2 mm from the cemento-enamel junction. The specimens were distributed into six groups (n = 8 pairs) based on two experimental factors: (1) slurry abrasivity level [low/medium/high] and (2) citric acid challenge [yes/no]. Read More

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CBM drilling technical parameter optimization methodology and software development: a case study of LUAN mining area.

An Acad Bras Cienc 2021 24;93(1):e20190346. Epub 2021 Mar 24.

China University of Mining and Technology, School of Resources and Geosciences, 1 University Rd, Xuzhou, Jiangsu, 221116 China.

Based on the leakage of the coalbed methane (CBM) drilling engineering practice of Luan mining area in China, the author determines the safe drilling fluid density range for the stable borehole wall based on borehole wall collapse and fracture pressure. Such parameters as the drilling fluid hydraulic parameters (including pump pressure, pump power and displacement, nozzle diameter, bit pressure drop, bit hydraulic horsepower, circulation pressure drop, impact force and jet velocity) and drilling parameters (including weight-on-bit, drilling rotary speed, bit tooth wear) in each borehole section are optimized. Taking the lowest drilling cost as the controlling target, the drilling parameter optimization model is designed and solved by the genetic algorithm. Read More

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Proteomic profile of the acquired enamel pellicle of professional wine tasters with erosive tooth wear.

Eur J Oral Sci 2021 Mar 30:e12779. Epub 2021 Mar 30.

Department of Surgery and Orthopedics, School of Dentistry, Federal University of Rio Grande do Sul, Rio Grande do Sul, Brazil.

The aim of this study was to compare the acquired enamel pellicle protein profile of professional wine tasters with mild and moderate erosive tooth wear. Twelve professional wine tasters participated (3 from a low tooth wear group; 9 from a high tooth wear group). Acquired enamel pellicle samples were collected and processed for proteomic analysis (nLC-ESI-MS/MS). Read More

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Occlusal Vertical Dimension: Best Evidence Consensus Statement.

J Prosthodont 2021 Apr;30(S1):12-19

Private Practice, London, United Kingdom.

Purpose: Patients in need of extensive prosthodontic treatment may need restoration of their occlusal vertical dimension (OVD) due to tooth wear, tooth loss, or changes that have occurred to existing prostheses over time. Prosthodontic treatment is based on the clinical application of the available evidence regarding interocclusal distance (IOD), the positional stability of rest vertical dimension (RVD), and the effect of altering the OVD. Hence, the purpose of this consensus document is to examine available data related to IOD, RVD, and alteration of the OVD. Read More

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Cementum thickening leads to lower whole tooth mobility and reduced root stresses: an in silico study on aging effects during mastication.

J Struct Biol 2021 Mar 26:107726. Epub 2021 Mar 26.

Department of Materials Science & Engineering, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany.

In the course of a lifetime the crowns of teeth wear off, cementum thickens and the pulp closes-in or may stiffen. Little is known about how these changes affect the tooth response to load. Using a series of finite element models of teeth attached to the jawbone, and by comparing these to a validated model of a 'young' pig 3-rooted tooth, the effects of these structural changes were studied. Read More

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Reliability of qualitative occlusal tooth wear evaluation using an intraoral scanner: A pilot study.

PLoS One 2021 25;16(3):e0249119. Epub 2021 Mar 25.

Department of Orthodontics, Dental School, Federal University of Pará, Belém, Pará, Brazil.

Dental wear analysis through the use of an intraoral scanner is a reality of modern dentistry. This study aimed to investigate the reliability of qualitative tooth wear evaluation through three-dimensional images captured with an intraoral scanner and compared to clinical and photographic examinations. Eighteen adult volunteers of both genders (18 to 55 years old) were submitted to clinical exams, intraoral photographs and intraoral scanning protocol using an optical scanner (TRIOS® Pod, 3Shape, Copenhagen, Denmark). Read More

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Restoration's thickness and bonding tooth substrate are determining factors in minimally invasive adhesive dentistry.

J Prosthodont Res 2021 Mar 25. Epub 2021 Mar 25.

Division of Cariology and Endodontology, School of Dentistry, University of Geneva, Geneva.

Purpose: To explore fracture strength and failure behaviour of minimally invasive CAD-CAM composite resin overlay restorations.

Methods: Eighty bi- and tri-layer cylindrical overlay model including the restoration bonded over bovine tooth dentin (Groups D) and enamel-dentin (Groups E) were assembled (diameter 9 mm). Restorations were milled from CAD-CAM composite resin blocks (Brilliant Crios, Coltène/Whaledent AG) in different thicknesses (0. Read More

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Monitoring of Erosive Tooth Wear with Intraoral Scanners In vitro.

Caries Res 2021 Mar 22:1-10. Epub 2021 Mar 22.

Department of Prosthodontics, Justus Liebig University Giessen, Giessen, Germany.

Intraoral scanners (IOS) have been used to quantify tooth wear, but so far they have not been systematically validated for monitoring of tissue loss. The aim of this in vitro study was to investigate whether progression of tissue loss can be detected with an IOS and whether IOS values agree with those obtained with noncontacting profilometry (PRO) serving as a standard method. Model jaws were mounted in a phantom head positioned in a dental chair. Read More

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A Clinical Comparative Evaluation Of The Wear Of Enamel Antagonist To Monolithic Zirconia And Metal Ceramic Crowns.

Int J Prosthodont 2021 Mar 18. Epub 2021 Mar 18.

Purpose: To evaluate and compare the wear of natural enamel against a metal-ceramic and a monolithic zirconia crown, with the null hypothesis that there is no difference in the wear of enamel between antagonist metal-ceramic and monolithic zirconia crowns.

Materials And Methods: In 30 subjects (irrespective of sex and within the age range of 18 to 40 years), two bilaterally opposing molars (maxillary/mandibular) were prepared to receive monolithic zirconia or metal-ceramic crowns with feldspathic porcelain veneer. A polyvinyl siloxane impression of the opposing arch was taken at the time of cementation and 1 year after cementation. Read More

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Investigation and comparison of patient experiences with removable functional appliances.

Angle Orthod 2021 Mar 22. Epub 2021 Mar 22.

Objectives: To compare patients' experiences with the Invisalign Teen with Mandibular Advancement® (ITMA) and Twin Block (TB) appliances, both initially and after several months of wear.

Materials And Methods: Sixty-eight patients completed an anonymous survey after at least 2 months of wearing ITMA or TB. Forty-five patients treated with ITMA (18 boys, 27 girls, mean age 13. Read More

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Prevalence and severity of non-carious cervical lesions and dentin hypersensitivity: association with oral-health related quality of life among Brazilian adults.

Heliyon 2021 Mar 13;7(3):e06492. Epub 2021 Mar 13.

Department of Social and Preventive Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil.

Objectives: To assess the association between dentin hypersensitivity (DH) (with or without non-carious cervical lesions (NCCL)) and physical and psychosocial oral health impact.

Methods: A cross-sectional population-based study with one-stage random sample of adults living in a Brazilian municipally was conducted between 2018 and 2019. Interviews and oral examinations were performed by calibrated examiners (Kappa ≥0. Read More

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Effect of albumin, urea, lysozyme and mucin on the triboactivity of Ti6Al4V/zirconia pair used in dental implants.

J Mech Behav Biomed Mater 2021 Mar 11;118:104451. Epub 2021 Mar 11.

Centro de Desenvolvimento de Produto e Transferência de Tecnologia (CDP2T), Department of Mechanical Engineering, Escola Superior de Tecnologia de Setúbal, Instituto Politécnico de Setúbal, Setúbal, Portugal; Centro de investigação interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Monte de Caparica, Portugal; Centro de Física e Engenharia de Materiais Avançados (CeFEMA), Instituto Superior Técnico, University of Lisbon, Lisboa, Portugal.

The titanium implant/zirconia abutment interface can suffer failure upon mechanical and biological issues, ultimately leading to the loss of the artificial tooth. The study of the effect of the organic compounds present in saliva on the tribological behavior of these systems is of utmost importance to understand the failure mechanisms and better mimic the in vivo conditions. The aim of the present work is to evaluate the effect of the addition of albumin, urea, lysozyme and mucin to artificial saliva, on the triboactivity of Ti6Al4V/zirconia pair commonly used in dental implants and then, compare the results with those obtained with human saliva. Read More

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Wear patterns and dental functioning in an Early Cretaceous stegosaur from Yakutia, Eastern Russia.

PLoS One 2021 17;16(3):e0248163. Epub 2021 Mar 17.

Vertebrate Zoology Department, Saint Petersburg State University, Universitetskaya Emb. 7/9, St. Petersburg, Russia.

Isolated stegosaurian teeth from the Early Cretaceous high-latitude (palaeolatitude estimate of N 62°- 66.5°) Teete locality in Yakutia (Eastern Siberia, Russia) are characterized by a labiolingually compressed, slightly asymmetrical and mesiodistally denticulated (9-14 denticles) crown, a pronounced ring-like cingulum, as well as a "complex network of secondary ridges". The 63 teeth (found during on-site excavation in 2012, 2017-2019 and screen-washing in 2017-2019) most likely belong to one species of a derived (stegosaurine) stegosaur. Read More

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An Analysis of Electronic Primary Dental Practice Tooth Wear Referrals.

Prim Dent J 2021 Mar;10(1):56-62

Professor, Consultant in Restorative Dentistry, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London.

We evaluated the quality of general dental practitioner (GDP) tooth wear (TW) referrals to secondary care services in Kent, Surrey and Sussex.Prospective consecutive referrals received via an electronic pathway were assessed from 1 June to 30 October 2019. Reasons for referral, patient demographics, quality of referral, opinion of the triaging clinician and outcome were assessed. Read More

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Treatment of Tooth Wear Associated with Reduced Occlusal Vertical Dimension Using Direct Composite Restorations and a Removable Prosthesis.

Prim Dent J 2021 Mar;10(1):120-125

Consultant in Restorative Dentistry, Royal Surrey County Hospital NHS Foundation Trust.

Tooth wear is increasing in prevalence within the United Kingdom. Treatment of tooth surface loss can be daunting for both the clinician and patient. However, use of additive resin composite restorations is a minimally invasive treatment modality. Read More

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The Oral Status Survey Tool: construction, validity, reliability and feasibility among people with mild and moderate intellectual disabilities.

J Intellect Disabil Res 2021 May 15;65(5):437-451. Epub 2021 Mar 15.

School of Dental Science, Trinity College Dublin, Dublin 2, Ireland.

Background: A lack of robust data about the oral health of people with intellectual disabilities (IDs) contributes to health disparities. Appropriate research tools are therefore needed. This study reports the construction and evaluation of the Oral Status Survey Tool (OSST), designed to be administered with people with disabilities by non-dental personnel. Read More

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Restoration of localised erosive wear using a combination of dental materials: a conservative approach.

Br Dent J 2021 Mar 12;230(5):294-300. Epub 2021 Mar 12.

Specialist Registrar in Restorative Dentistry, Barts NHS Trust, Royal London Dental Hospital, London, UK.

Objectives To present the treatment approach for the restoration of localised anterior erosive wear using a combination of dental materials.Clinical considerations A patient presented in a private dental practice concerned about the aesthetics of his anterior teeth. The patient's history and clinical examination revealed erosive wear on the labial and palatal aspects of his maxillary central incisors and right lateral incisor. Read More

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Dental microwear of a basal ankylosaurine dinosaur, Jinyunpelta and its implication on evolution of chewing mechanism in ankylosaurs.

PLoS One 2021 10;16(3):e0247969. Epub 2021 Mar 10.

Zhejiang Museum of Natural History, Hangzhou, Zhejiang, People's Republic of China.

Jinyunpelta sinensis is a basal ankylosaurine dinosaur excavated from the mid Cretaceous Liangtoutang Formation of Jinyun County, Zhejiang Province, China. In the present study, its dental microwear was observed using a confocal laser microscope. Jinyunpelta had steep wear facets that covered most of buccal surfaces of posterior dentary teeth. Read More

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Knowledge on and treatment practices of erosive tooth wear among Finnish dentists.

Acta Odontol Scand 2021 Mar 9:1-7. Epub 2021 Mar 9.

Research Unit of Oral Health Sciences, University of Oulu, Oulu, Finland.

Objectives: To investigate Finnish dentists' knowledge on and means of recording, detecting and diagnosing erosive tooth wear (ETW). Treatment options and possible differences in treatment decisions between general and specialized dentists were also evaluated.

Materials And Methods: An electronic questionnaire was sent by e-mail to 3664 Finnish dentists. Read More

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Bruxism definition: Past, present, and future - What should a prosthodontist know?

J Prosthet Dent 2021 Mar 4. Epub 2021 Mar 4.

Professor and Head, Department of Orofacial pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.

Statement Of Problem: The definition of bruxism has evolved, and the dental profession needs to align with the terminologies adopted in the current literature of sleep and orofacial pain medicine.

Purpose: The purpose of this review was to discuss the recent evolution of bruxism concepts and the implications for changing the definition that is currently used by the prosthodontic community.

Material And Methods: A historical perspective on the evolution of the definition of bruxism, as well as a systematic literature review on the validity of polysomnography (PSG)-based criteria for sleep bruxism diagnosis to detect the presence of clinical consequences, is presented. Read More

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Impact of mucin on the anti-erosive/anti-abrasive efficacy of chitosan and/or F/Sn in enamel in vitro.

Sci Rep 2021 Mar 5;11(1):5285. Epub 2021 Mar 5.

Division for Cariology, Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany.

The application of stannous ions in combination with fluoride (F/Sn) is one of the central strategies in reducing erosive tooth wear. F/Sn efficacy can be enhanced by adding chitosan, a positively charged biopolymer. For patients with low saliva flow, this efficacy, however, is not sufficient, making further improvement desirable. Read More

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Quantitative analysis on the wear of monolithic zirconia crowns on antagonist teeth.

BMC Oral Health 2021 Mar 4;21(1):94. Epub 2021 Mar 4.

Guilin Medical University, Guilin, China.

Background: The present study aimed to quantitate the wear of the highly transparent Yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) ceramic monolithic zirconia crown on the enamel in vivo and discuss the prone position of the wear and the underlying mechanism.

Methods: A total of 43 patients with 43 posterior teeth were selected for full zirconia crown restoration and examined immediately, at 6 months, and at 1 year after restoration. During the follow-up visit, the fine impression of the patients' monolithic zirconia crowns, the antagonist teeth, the corresponding contralateral natural teeth, the super plaster cast, and epoxy resin model was ontained. Read More

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Guided endodontics: The impact of new technologies on complex case solution.

Aust Endod J 2021 Mar 3. Epub 2021 Mar 3.

School of Dentistry, Federal University of Goiás, Goiânia, Brazil.

Discuss the impact of new diagnostic and planning technologies on the resolution of a clinical case of an upper central incisor with lateral perforation, root canal calcification and apical periodontitis. A 44-year-old woman sought treatment because of a colour change in an anterior tooth. The tooth had already been endodontically accessed, and she reported that two different clinicians had failed to locate the root canal. Read More

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Georgian Med News 2021 Jan(310):36-39

Ivane Javakhishvili Tbilisi State University, Georgia.

Bruxism has become more and more debatable and pressing issue all over the world last years. the etiology of bruxism has been changing diverse definitions, over the years, however recently it is defined as a repetitive jaw-muscle activity characterized by clenching or grinding of the teeth and by bracing or thrusting of the mandible. This literature review discusses the possible risk factors of bruxism in children and adolescence, among which behavioral abnormalities and sleep disturbances predominates. Read More

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January 2021

Is Continuous Eruption Related to Periodontal Changes? A 16-Year Follow-up.

J Dent Res 2021 Mar 3:22034521999363. Epub 2021 Mar 3.

Department of Restorative Dentistry, Periodontology, Endodontology, Preventive Dentistry and Pedodontics, University Medicine Greifswald, Greifswald, Germany.

The aims of this study were to 1) determine if continuous eruption occurs in the maxillary teeth, 2) assess the magnitude of the continuous eruption, and 3) evaluate the effects of continuous eruption on the different periodontal parameters by using data from the population-based cohort of the Study of Health in Pomerania (SHIP). The jaw casts of 140 participants from the baseline (SHIP-0) and 16-y follow-up (SHIP-3) were digitized as 3-dimensional models. Robust reference points were set to match the tooth eruption stage at SHIP-0 and SHIP-3. Read More

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Effect of toothbrushing on the surface of enamel, direct and indirect CAD/CAM restorative materials.

Int J Prosthodont 2021 02 26. Epub 2021 Feb 26.

Purpose: To determine the effects of tooth brushing on the surface roughness (Sa) and morphology, maximum relative depth (Rv), gloss (GU), and microhardness (MH) of four esthetic restorative materials and enamel.

Materials And Methods: A light-curing composite resin (Filtek Supreme Ultra [FSU], 3M ESPE), two hybrid resin/ceramic CAD/CAM materials (Lava Ultimate [LAV], 3M ESPE, and VITA Enamic [VEN], VITA Zahnfabrik), and a CAD/CAM feldspathic ceramic (VITA Blocs Mark II [VMA], VITA Zahnfabrik) were evaluated. Bovine enamel (ENA) was used as a control group. Read More

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February 2021