20,100 results match your criteria permanent teeth

A novel ENAM mutation causes hypoplastic amelogenesis imperfect.

Oral Dis 2021 Apr 16. Epub 2021 Apr 16.

Department of Preventive Dentistry, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, PR China.

Objectives: To identify the genetic cause of one Chinese family with hypoplastic amelogenesis imperfecta (AI) and explore the relationship between genotype and its phenotype.

Material And Methods: One Chinese family with generalized hypoplastic AI was recruited. One deciduous tooth from the proband was subjected to scanning electron microscopy. Read More

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A novel method for measuring tooth angulation in permanent mandibular second molars with delayed tooth eruption.

J Orthod 2021 Apr 15:14653125211003911. Epub 2021 Apr 15.

Private Practice, Bursa, Turkey.

Objective: To investigate the effect of angulation of permanent mandibular second molars (MM2) on eruption problems and investigate a new method of measuring MM2 angulation for the diagnosis and evaluation of delayed tooth eruption (DTE) for easy use in dental practice.

Design: Retrospective study.

Setting: Department of Orthodontics, Necmettin Erbakan University. Read More

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Persistent palatal hypertrophy associated with rapid maxillary expansion procedure: Report of a rare case.

Biomedicine (Taipei) 2020 1;10(4):49-51. Epub 2020 Dec 1.

Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ordu University, Ordu, Turkey.

Maxillary transversal deficiency (MTD) is a common skeletal problem. If not treated on time, MTD evolve to a more complex malocclusion. This problem can affect facial growth and development. Read More

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December 2020

Association of dental and gingival health status with level of salivary characteristics and in children.

J Dent Sci 2021 Mar 14;16(2):744-750. Epub 2020 Sep 14.

Periodontics Department, College of Dentistry, University of Sulaimani, Sulaimani, Iraq.

Background/purpose: Caries and periodontal diseases are the most common oral diseases that lead to teeth loss. The aim of this study is to assess the association of combination of salivary characteristics, levels and clinical parameters to the dental and gingival health statuses of children.

Materials And Methods: Saliva samples were collected from 89 children. Read More

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Efficacy of different calcium silicate materials as pulp-capping agents: Randomized clinical trial.

J Dent Sci 2021 Mar 17;16(2):723-731. Epub 2020 Sep 17.

Department of Restorative Dentistry, Ege University Faculty of Dentistry, Izmir, Turkey.

Background/purpose: Calcium hydroxide-based materials were the gold standard in vital pulp therapies for decades' despite of several shortcomings. However, calcium silicates have been discussed as an alternative to overcome these drawbacks. It was aimed to investigate the in-vivo effectiveness of different calcium silicates based materials in pulp capping in this study. Read More

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Taxes to Unhealthy Food and Beverages and Oral Health in Mexico: An Observational Study.

Caries Res 2021 Apr 14:1-10. Epub 2021 Apr 14.

Center for Health Systems Research, Instituto Nacional de Salud Pública, Cuernavaca, Mexico.

In January 2014, taxes on sugar-sweetened beverages and nonessential energy-dense food were implemented in Mexico to discourage the consumption of these products. Published evaluations have shown reductions in purchases of taxed food and beverages associated with the implementation of this fiscal policy. Although there are some studies on the impact on health based on simulation studies, no evaluations with empirical data on changes in oral health have been published. Read More

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Comparison of the treatment outcomes of the conventional stainless steel crown restorations and the hall technique in the treatment of carious primary molars.

Niger J Clin Pract 2021 Apr;24(4):584-594

Department of Child Dental Health, College of Medicine, University of Lagos, Nigeria.

Background: Dental caries is a multifactorial disease that causes reversible decalcification and cavitation of susceptible teeth exposed to sugary substrates over a period of time in the oral cavity. It gives clinical and social burdens to the child patients and their parents/carers. Stainless steel crown (SSC) restoration is one of the restorative treatment options in the management of carious primary molars. Read More

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What is the most accurate method for detecting caries lesions? A systematic review.

Community Dent Oral Epidemiol 2021 Apr 12. Epub 2021 Apr 12.

Department of Pediatric Dentistry, School of Dentistry, University of São Paulo, Sao Paulo, Brazil.

Objective: To perform a systematic review and meta-analysis of the performance of different methods for detecting carious lesions in permanent and primary teeth, considering all types of tooth surface.

Methods: Two reviewers searched PubMed, Embase, Scopus and other sources up to November 2020 to identify published and nonpublished studies in English. We focused on three caries detection methods: visual inspection (VI), radiographic (RX) and fluorescence-based (LF). Read More

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Automated segmentation and description of the internal morphology of human permanent teeth by means of micro-CT.

BMC Oral Health 2021 Apr 12;21(1):185. Epub 2021 Apr 12.

Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland.

High-resolution micro-computed tomography is a powerful tool to analyze and visualize the internal morphology of human permanent teeth. It is increasingly used for investigation of epidemiological questions to provide the dentist with the necessary information required for successful endodontic treatment. The aim of the present paper was to propose an image processing method to automate parts of the work needed to fully describe the internal morphology of human permanent teeth. Read More

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A comparative assessment of transfer accuracy of two indirect bonding techniques in patients undergoing fixed mechanotherapy: A randomised clinical trial.

J Orthod 2021 Mar 2;48(1):13-23. Epub 2020 Dec 2.

Department of Orthodontics and Dentofacial Orthopedics, Institute of Dental Sciences and Technologies, Modi Nagar, Uttar Pradesh, India.

Objectives: To assess the transfer accuracy of three-dimensional (3D) printed transfer trays and compare them with transfer trays made up of polyvinyl siloxane (PVS) for use in indirect bonding.

Design: This was a two-arm parallel prospective randomised controlled trial.

Setting: The trial was undertaken at the outpatient department of a dental college. Read More

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[Clinical study of age-related sensory innervation of the anterior hard palate].

Hua Xi Kou Qiang Yi Xue Za Zhi 2021 Apr;39(2):170-174

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.

Objectives: The present study aimed to explore the innervation of the anterior hard palatine and its relationship with individual development stage. Specifically, the effects of anesthesia on patients of different ages were observed, and neurodevelopment in the maxillofacial region was invesitgated. References that are helpful in selecting local anesthesia were provided. Read More

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Three-Dimensional Tooth Models with Pulp Cavity Enhance Dental Anatomy Education.

Anat Sci Educ 2021 Apr 8. Epub 2021 Apr 8.

Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.

Dental anatomy is an integrated, core fundamental dental course, which prepares students for all future clinical dental courses. This study aimed to build up an online dental learning platform of micro-computed tomography-based three-dimensional (3D) tooth models with pulp cavity, and to further evaluate its effectiveness for dental anatomy education using a cohort study. First, ninety-six extracted permanent teeth were scanned by micro-computed tomography and the enamel, dentine, and pulp cavity of each was distinguished by different grey-scale intensities using Mimics software. Read More

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Atypical presentation of lateral periodontal cyst associated with impacted teeth: two case reports.

BMC Oral Health 2021 Apr 7;21(1):178. Epub 2021 Apr 7.

Oral Medicine and Maxillofacial Pathology Unit, Division of Oral and Maxillofacial Surgery, Department of Surgery, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland.

Background: Lateral periodontal cyst (LPC) is an uncommon form of developmental odontogenic cyst. LPC can be suspected when there is a round, well-circumscribed radiolucency, usually of small diameter, along the lateral surface of vital erupted teeth, predominantly in the mandibular premolar region. Histopathological analysis allows LPC to be diagnosed based on its characteristic features such as a thin cuboidal to stratified squamous non-keratinizing epithelium containing epithelial plaques and glycogen-rich clear cells. Read More

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Effect of Photobiomodulation Therapy Following Direct Pulp Capping on Postoperative Sensitivity by Thermal Stimulus: A Retrospective Study.

Med Princ Pract 2021 Apr 7. Epub 2021 Apr 7.

Objective: The aim of this retrospective study was to investigate the effect of photobiomodulation therapy on postoperative pain provoked by thermal stimulation in direct pulp capping.

Subject And Methods: A retrospective study was performed using the records of patients who received direct pulp capping using mineral trioxide aggregate. Teeth irradiated with a laser were assigned as the photobiomodulation therapy group and non-irradiated teeth were considered as the control group. Read More

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A 5-year data report of traumatic dental injuries in children and adolescents from a major dental trauma center in Greece.

Dent Traumatol 2021 Apr 6. Epub 2021 Apr 6.

Department of Paediatric Dentistry, Dental School, National and Kapodistrian University of Athens, Athens, Greece.

Background/aim: Prevalence and demographic characteristics of traumatic dental injuries (TDI) differ in different countries. The aim of this retrospective study was to assess TDI in primary and permanent teeth among children and adolescents who presented to the Department of Paediatric Dentistry, National and Kapodistrian University of Athens, Greece, during the last 5 years.

Material And Methods: Dental records of 236 new patients who presented with dento-alveolar trauma to the Postgraduate Dental Clinic from 1/1/2014 to 31/12/2019 were reviewed. Read More

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Biosensitive and Antibacterial Coatings on Metallic Material for Medical Applications.

Cell Biol Int 2021 Apr 5. Epub 2021 Apr 5.

Department of Biophysics, Friedrich-Alexander-University of Erlangen-Nuremberg, Germany.

Metallic materials are commonly used for load-bearing implants and as internal fixation devices. It is customary to use austenitic stainless steel, especially surgical grade type 316L SS as temporary and Ti alloys as permanent implants. However, long-term, poor bonding with bone, corrosion and release of metal ions such as chromium, and nickel occur. Read More

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Microdont Developing Outside the Alveolar Process and Within Oral Diffuse and Plexiform Neurofibroma in Neurofibromatosis Type 1.

Anticancer Res 2021 Apr;41(4):2083-2092

Private Practice in Orthodontics, Hamburg-Lokstedt, Germany.

Background/aim: Numerical aberrations of permanent dentition and dystopic tooth eruption are part of the phenotype of the tumor predisposition syndrome neurofibromatosis type 1 (NF1). In these cases, surplus tooth germs usually develop in the alveolar processes of the jaw. This report attests to the dystopic development of a dysplastic supernumerary tooth in NF1 arising outside the jaw. Read More

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Autotransplantation of a completely developed impacted maxillary canine: A 7-year follow-up case report.

J Am Dent Assoc 2021 Mar 30. Epub 2021 Mar 30.

Background: Impacted maxillary canines are likely to be extracted in adult patients once orthodontic treatment is ruled out. The missing teeth are generally replaced with dental implants.

Case Description: The authors report the clinical case of a 45-year-old man who was missing the maxillary left canine for 30 years. Read More

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Timing of Mouse Molar Formation Is Independent of Jaw Length Including Retromolar Space.

J Dev Biol 2021 Mar 12;9(1). Epub 2021 Mar 12.

Department of Anatomy, Physiology & Pharmacology, College of Medicine, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada.

For humans and other mammals to eat effectively, teeth must develop properly inside the jaw. Deciphering craniodental integration is central to explaining the timely formation of permanent molars, including third molars which are often impacted in humans, and to clarifying how teeth and jaws fit, function and evolve together. A factor long-posited to influence molar onset time is the jaw space available for each molar organ to form within. Read More

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The Effects of Cogging Torque Reduction in Axial Flux Machines.

Micromachines (Basel) 2021 Mar 19;12(3). Epub 2021 Mar 19.

Department of Electric and Electronic Engineering, Ariel University, Ariel 40700, Israel.

An axial flux permanent magnet single-rotor generator has good potential in various applications that require high efficiency, prolonged service life, as well as low mass and dimensions. However, the effect of cogging torque diminishes generator efficiency and flexibility of functionality. The effect of cogging torque arises because of a small air gap between the stator teeth and the rotor. Read More

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Modulation of the Dental Pulp Stem Cell Secretory Profile by Hypoxia Induction Using Cobalt Chloride.

J Pers Med 2021 Mar 30;11(4). Epub 2021 Mar 30.

Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia.

The action of stem cells is mediated by their paracrine secretions which comprise the secretory profile. Various approaches can be used to modify the secretory profile of stem cells. Creating a hypoxic environment is one method. Read More

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Prevalence of Fascioliasis and Associated Economic Losses in Cattle Slaughtered at Lira Municipality Abattoir in Northern Uganda.

Animals (Basel) 2021 Mar 4;11(3). Epub 2021 Mar 4.

Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California Davis, Tulare, CA 95616, USA.

Fascioliasis (liver fluke infestation) is one of the most important parasitic diseases affecting cattle, other ruminant animals and humans. Fascioliasis causes large, but usually neglected, economic losses to cattle farmers and traders. The objectives of this study were to assess the prevalence and associated risks for fascioliasis in slaughter cattle and estimate the financial losses due to liver condemnation at the Lira Municipal abattoir in Uganda. Read More

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Observational Study Regarding the Relationship between Nutritional Status, Dental Caries, Mutans Streptococci, and Lactobacillus Bacterial Colonies.

Int J Environ Res Public Health 2021 Mar 29;18(7). Epub 2021 Mar 29.

Faculty of Dental Medicine, University of Medicine and Pharmacy, Science and Technology George Emil Palade, 540139 Târgu-Mureș, Romania.

The prevalence of dental caries and obesity is high as both raise significant health problems. The objective of this study was to evaluate the relationship between dental caries, the number of salivary colonies forming units of Mutans Streptococci (MS) and Lactobacillus (LB), and the nutritional status in a group of children from Transylvania. This observational study used a sample of 154 school children, aged 9 to 12 years. Read More

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Generalizability of Deep Learning Models for Caries Detection in Near-Infrared Light Transillumination Images.

J Clin Med 2021 Mar 1;10(5). Epub 2021 Mar 1.

Department of Oral Diagnostics, Digital Health and Health Services Research, Charité-Universitätsmedizin Berlin, 14197 Berlin, Germany.

Objectives: The present study aimed to train deep convolutional neural networks (CNNs) to detect caries lesions on Near-Infrared Light Transillumination (NILT) imagery obtained either in vitro or in vivo and to assess the models' generalizability.

Methods: In vitro, 226 extracted posterior permanent human teeth were mounted in a diagnostic model in a dummy head. Then, NILT images were generated (DIAGNOcam, KaVo, Biberach), and images were segmented tooth-wise. Read More

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An Orthodontic Approach for Garre's Sclerosing Osteomyelitis of the Mandible.

Int J Environ Res Public Health 2021 Mar 18;18(6). Epub 2021 Mar 18.

Department Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, 37 Cardinal Iuliu Hossu Street, 400029 Cluj-Napoca, Romania.

The nonsuppurative osteomyelitis of the mandible is a rare condition that can occur in children due to low-grade inflammatory processes, dental cavities, periodontal lesions as well as the eruption process of the teeth. We submit a case report involving the orthodontic management of a 9-year-old female patient who presented in our service in the mixed dentition period with diagnosed Garre's sclerosing osteomyelitis of the entire mandibular body. After a full work-up, the following symptoms and signs were noted: bilateral temporomandibular joint (TMJ) pain, loss of the leeway space, anterior open bite, distalization of the secondary maxillary right canine, nail biting and tongue thrust. Read More

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Radiological Evaluation of Stainless Steel Crowns Placed on Permanent Teeth in Patients Treated under General Anaesthesia.

Int J Environ Res Public Health 2021 Mar 3;18(5). Epub 2021 Mar 3.

CROC, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France.

Evidence-based evaluations of dental treatment are needed to support the development of special care dentistry services. This retrospective study was designed to collect and analyse X-ray images of permanent teeth restored with stainless steel crowns (SSC) in patients treated under general anaesthesia. Between 2013 and 2019, 360 permanent molars were crowned with SSCs in 198 adult patients. Read More

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Diagnostic Value of Fluorescence Methods, Visual Inspection and Photographic Visual Examination in Initial Caries Lesion: A Systematic Review and Meta-Analysis.

Dent J (Basel) 2021 Mar 6;9(3). Epub 2021 Mar 6.

School of Odonto Stomatology, Hanoi Medical University, Hanoi 100000, Vietnam.

This systematic review and meta-analysis aimed to investigate the efficacy of fluorescence-based methods, visual inspections, and photographic visual examinations in initial caries detection. A literature search was undertaken in the PubMed and Cochrane databases. Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines were followed, and eligible articles published from 1 January 2009 to 30 October 2019 were included if they met the following criteria: they (1) assessed the accuracy of methods of detecting initial tooth caries lesions on occlusal, proximal, or smooth surfaces in both primary and permanent teeth (in clinical); (2) used a reference standard; (3) reported data regarding the sample size, prevalence of initial tooth caries, and accuracy of the methods. Read More

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Does Dental Caries Increase Risk of Undernutrition in Children?

JDR Clin Trans Res 2021 Apr 2:23800844211003529. Epub 2021 Apr 2.

School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK.

Introduction: A systematic review of the evidence on the impact of dental caries on malnutrition risk in children was conducted.

Objectives: To systematically review published evidence pertaining to the effect of dental caries severity and prevalence on risk of wasting or stunting in children.

Methods: Four questions relating to caries of the permanent dentition, primary dentition, early childhood caries (ECC), and severe ECC as a risk factor for undernutrition were set. Read More

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Evaluation of the efficiency of computerized algorithms to formulate a decision support system for deepbite treatment planning.

Am J Orthod Dentofacial Orthop 2021 Apr;159(4):512-521

Department of Orthodontics and Dentofacial Orthopedics, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt; Department of Orthodontics and Dentofacial Orthopedics, Faculty of Oral and Dental Medicine, Future University, Cairo, Egypt.

Introduction: This study aimed to evaluate the efficiency of a newly constructed computer-based decision support system (DSS) on the basis of artificial intelligence technology and designed to plan treatment for patients with a deep overbite.

Methods: With the help of information technology, a DSS was developed specifically for treatment planning of deepbite malocclusion. The program inputs were the components and the contributing factors used commonly by the orthodontic clinicians in deepbite diagnosis. Read More

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Assessment of Mesiobuccal Canal Configuration, Prevalence and Inter-Orifice Distance at Different Root Thirds of Maxillary First Molars: A CBCT Study.

Clin Cosmet Investig Dent 2021 24;13:105-111. Epub 2021 Mar 24.

Department of Endodontics, Faculty of Dentistry King Abdul Aziz University, Jeddah, Saudi Arabia.

Aim: The aims of this study were to assess the prevalence and configuration of the second mesiobuccal (MB2) canal in the mesiobuccal MB root of permanent maxillary first molars at different root levels in a Saudi sub-population using cone‑beam computed tomography (CBCT) and to measure the inter-orifice distance between MB & MB2 at the pulpal floor level.

Materials And Methods: This retrospective study was carried out on CBCT images of Saudi patients seen at King Abdul Aziz University. A total of 106 maxillary first molars were evaluated using a specialized software program (iCAT CBCT software). Read More

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