248,119 results match your criteria teeth

Morphological integration of the canine region within the hominine alveolar arch.

J Hum Evol 2021 Apr 7;154:102942. Epub 2021 Apr 7.

Institute of Human Origins, Arizona State University, Tempe, AZ, 85287, USA; School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, 85287, USA.

The early hominin record is characterized by numerous shifts in dental proportions (e.g., canine reduction and megadontia) linked to changes in diet and social behavior. Read More

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Dental trauma in toddlers 1-3 years of age living in multicultural areas of Stockholm, Sweden: A retrospective cohort study.

Dent Traumatol 2021 Apr 10. Epub 2021 Apr 10.

Division of Orthodontics and Pediatric Dentistry, Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden.

Background/aim: Traumatic dental injuries are common and affect many children. The aim of this retrospective study was to investigate the prevalence and characteristics of dental trauma as well as the costs and resource use in a cohort of children aged 1-3 years in low socioeconomic areas (low income and educational level) of Stockholm.

Materials And Methods: Data were extracted from a larger intervention trial and analyzed for the prevalence and other characteristics of dental trauma as well as patient characteristics of children (n = 1346) from six dental clinics in low-income, multicultural areas. Read More

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Six-year clinical outcomes of implant-supported acrylic vs. ceramic superstructures according to the All-on-4 treatment concept for the rehabilitation of the edentulous maxilla.

Odontology 2021 Apr 10. Epub 2021 Apr 10.

Department of Oral and Maxillofacial Surgery, Universitätsklinikum Schleswig Holstein, Christian Albrechts University, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel, Germany.

The aim of the current study was to document the long-term clinical results of the use of two prosthetic techniques for the rehabilitation of completely edentulous maxillae according to the "All-on-Four" concept: Fixed, screw-retained prosthesis mounted on a chrome-molybdenum framework with (1) metal-ceramic veneers and (2) Acrylic prosthesis with acrylic resin prosthetic teeth. A total of 34 patients were assigned to subgroups according to their own preference of the superstructure type (ceramics [n: 17] or acrylic resin [n: 17]). Prosthetic complications, marginal bone loss, plaque accumulation, bleeding on probing, bite force and oral-health-related quality of life were assessed over a period of 6 years. Read More

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Bruxism in Acute Neurologic Illness.

Curr Pain Headache Rep 2021 Apr 10;25(6):41. Epub 2021 Apr 10.

Division of Neurocritical Care, Weill Cornell Medicine, New York Presbyterian, 525 East 68th St, RM F610, New York, NY, 10065, USA.

Purpose Of Review: While traditionally encountered in ambulatory settings, bruxism occurs in patients with a variety of acute neurologic illnesses including encephalitis, intracerebral hemorrhage, traumatic brain injury, hypoxic-ischemic encephalopathy, and acute ischemic stroke. Untreated bruxism in acute neurologic illness can lead to tooth loss, difficulty in mouth care resulting in recurrent aspiration pneumonia, endotracheal tube dislodgement, and even tongue laceration or amputation. Inpatient clinicians should be aware of the etiologies and management strategies for bruxism secondary to acute neurologic illness. Read More

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Human diseases linked to cytoplasmic aminoacyl-tRNA synthetases.

Enzymes 2020 28;48:277-319. Epub 2020 Sep 28.

Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, United States. Electronic address:

As an essential component of the translation machinery, aminoacyl-tRNA synthetases (aaRSs) are indispensable for cell viability. In complex multicellular organisms, this fundamental importance of aaRSs is further expanded by their broad regulatory functions, and reflected by their extensive human disease connections. This chapter focuses on the disease connection of the group of aaRSs supporting protein synthesis in the cytoplasm, including GlyRS and LysRS that are also used for mitochondrial translation. Read More

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September 2020

An application of finite element method in material selection for dental implant crowns.

Biomed Tech (Berl) 2021 Apr 12. Epub 2021 Apr 12.

Faculty of Technology, Sakarya Applied Sciences University, Sakarya, Turkey.

Materials used for dental crowns show a wide range of variety, and a dentist's choice can depend on several factors such as patient desires, esthetics, tooth factors, etc. One of the most important issues for implant surgery is the primary stability and it should be provided to minimize the risks of screw loosening, failed osseointegration, or nonunion. The current study aims to present the Finite Element Analysis (FEA)-based material selection strategy for a dental crown in terms of reducing the aforementioned risks of dental implants. Read More

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Corydoras fulleri (Siluriformes: Callichthyidae), a new catfish species from the rio Madeira basin, Peru.

J Fish Biol 2021 Apr 9. Epub 2021 Apr 9.

Universidade Federal do Rio de Janeiro, Museu Nacional, Departamento de Vertebrados, Setor de Ictiologia, Rio de Janeiro, Rio de Janeiro, Brazil.

A new long-snouted Corydoras species is described from two tributaries of the río Manuripe and a tributary of the río Madre de Dios, rio Madeira basin, Peru. Corydoras fulleri can be distinguished from its congeners by having the following features: (I) branch of the temporal sensory canal at sphenotic, which gives rise to the supraorbital canal, with two pores; (III) upper tooth plate of branchial arch with three series of teeth; (III) area at the corner of the mouth, ventral to the maxillary barbel, with a small fleshy flap; (IV) two moderate-sized dark brown or black blotches on caudal-fin base, one on its lateral portion and another one on its dorsal portion, blotches variably diffuse and/or fused with each other; (V) absence of a dark brown or black stripe transversally crossing the orbit; (VI) a longitudinal dark brown or black stripe on postdorsal region of flank midline, variably fused with the lateral peduncular blotch, some specimens with slender, longitudinally elongated, dark brown or black blotch on flank midline, forming a dash-like marking, stripe or dash-like blotch diffuse in some specimens; and (VII) region around dorsal-fin origin generally lacking dark brown or black blotch, or displaying diffuse blotch. This article is protected by copyright. Read More

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Does prevention-focused dental care provision during recruit training reduce adverse dental outcomes in UK Armed Forces personnel? A retrospective cohort analysis.

Br Dent J 2021 Apr 9;230(7):400-406. Epub 2021 Apr 9.

Wing Commander Royal Air Force, Consultant in Dental Public Health, HQ Defence Medical Services, Staffordshire, UK.

Background Dental emergencies experienced during military operations may render individuals unable to operate effectively. To minimise this risk, UK Armed Forces (UKAF) recruits receive a prevention-focused dental care intervention during military training (known as 'Project MOLAR') before their entry to the trained strength of the Armed Forces.Aim To evaluate whether Project MOLAR is effective in preventing future dental emergency events and subsequent oral disease in UKAF recruits. Read More

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Comparative study of the accuracy of an implant intraoral scanner and that of a conventional intraoral scanner for complete-arch fixed dental prostheses.

J Prosthet Dent 2021 Apr 6. Epub 2021 Apr 6.

Associate Professor, Department of Conservative Dentistry and Prosthodontics, School of Dentistry, Complutense University of Madrid, Madrid, Spain; Head of Postgraduate Specialist Programme in Advanced Implant-Prosthodontics, Complutense University of Madrid, Madrid, Spain.

Statement Of Problem: Most of the available digital systems are designed to image teeth and soft tissue rather than dental implants. However, although some are marketed specifically to record implant position, whether these products are better for implant scanning is unclear.

Purpose: The purpose of this in vitro study was to compare the accuracy of an implant intraoral scanner (PiC camera) with that of an intraoral scanner (TRIOS3) for 6 implants placed in completely edentulous arches. Read More

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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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N/OFQ modulates orofacial pain induced by tooth movement through CGRP-dependent pathways.

BMC Neurosci 2021 Apr 9;22(1):25. Epub 2021 Apr 9.

Department of Orthodontics, State Key Laboratory of Oral Diseases, National Clinical Center for Oral Research, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, Ren Min Nan Road, Chengdu, 610041, China.

Background: Nociceptin/orphanin FQ (N/OFQ) has been revealed to play bidirectional roles in orofacial pain modulation. Calcitonin gene-related peptide (CGRP) is a well-known pro-nociceptive molecule that participates in the modulation of orofacial pain. We aimed to determine the effects of N/OFQ on the modulation of orofacial pain and on the release of CGRP. Read More

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Delayed onset of tooth decay in a routine pediatric adenotonsillectomy.

Am J Otolaryngol 2021 Mar 31;42(5):103019. Epub 2021 Mar 31.

Boston Medical Center- Department of Otolaryngology- Head and Neck Surgery, United States of America. Electronic address:

Adenotonsillectomy is a common pediatric surgical procedure with a well-defined safety profile. Major complications from this procedure include bleeding/hemorrhage, infection, pain leading to dehydration, and airway obstruction or edema. Though rare, oral endotracheal intubation and oral retractor placement may result in injuries to the teeth and the surrounding soft tissue. Read More

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Alendronate/dexamethasone combination therapy worsens soft and hard tissue wound healing around implants in rat maxillae.

Bone 2021 Apr 6:115942. Epub 2021 Apr 6.

Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8588, Japan.

Dental implant treatment in patients prescribed medications is associated with bisphosphonate-related osteonecrosis of the jaw (BRONJ) around the implants. However, there is no scientific information on how bisphosphonate and/or steroid therapies affect wound healing around implants after implant placement. The aim of this study was to histopathologically and immunopathologically investigate the effects of bisphosphonate and/or steroid therapy on the early stages of soft and hard tissue wound healing around implants in rat maxillae. Read More

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Impact of orthognathic surgery on the prevalence of dehiscence in Class II and Class III surgical-orthodontic patients.

Angle Orthod 2021 Apr 9. Epub 2021 Apr 9.

Objectives: The objectives were to evaluate and compare the presence of bone dehiscence before and after orthognathic surgery.

Materials And Methods: In this retrospective study, 90 cone-beam computed tomography (CBCT) scans from 45 patients were evaluated. Class II (n = 23) and Class III (n = 22) orthodontic patients who were being prepared for orthognathic surgery were measured. Read More

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Comparison of digital image displays performance in the detection of artificial internal root resorptions lesions.

Dentomaxillofac Radiol 2021 Apr 9:20200578. Epub 2021 Apr 9.

Department of Propedeutics and Integrated Clinic, Division of Oral Radiology, School of Dentistry, Federal University of Bahia, Salvador, Brazil.

Objective: To compare the diagnostic efficacy of different devices for visualizing digital images in detecting simulated internal root resorption (IRR).

Methods: 26 uniradicular human teeth were sectioned along its long axis and randomly divided into two groups. Then, they were submerged in hydrochloric acid (HCl) P. Read More

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Use of 1064nm Nd:YAG Laser Biostimulation for Immediate Reversal of a Long-Standing Paresthesia of the Superior Labial Branch of the Infraorbital Nerve Following a Root Coverage Procedure: A Case Report.

Alan M Timko

Clin Adv Periodontics 2021 Apr 9. Epub 2021 Apr 9.

Diplomate of the American Board of Periodontology, Private Practice, 9401 McKnight Rd., Suite 301-A, Pittsburgh, PA, 15237.

Introduction: Paresthesia is a common cause of dental malpractice litigation. Symptoms range from minimal to severely affecting the quality of life. Effective treatments of post-traumatic paresthesias are scarce. Read More

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Prevention of non-cavitated lesions with fluoride and xylitol varnishes during orthodontic treatment: a randomized clinical trial.

Clin Oral Investig 2021 Apr 9. Epub 2021 Apr 9.

Bauru Dental School and Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Alameda Octávio Pinheiro Brisolla 9-75, Bauru, SP, 17012-901, Brazil.

Objective: Fixed orthodontic appliances impair oral hygiene increasing the risk of non-cavitated lesions (NCLs) and tooth decay. The aim of this study was to compare the outcomes of fluoride and xylitol varnishes in preventing NCLs during comprehensive orthodontic treatment.

Materials And Methods: The sample comprised 55 volunteers from 15 to 20 years of age under orthodontic treatment that were randomly divided into three groups: Fluoride Group (FG; n=17), Xylitol Group (XG; n=19), and Placebo Group (PG; n=19). Read More

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A randomized clinical study to compare implant stability and bone loss using early loading protocol in two implant systems with different design.

J Indian Prosthodont Soc 2021 Jan-Mar;21(1):74-80

Department of Prosthodontics, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India.

Aims: The study compared changes in implant stability and bone loss of implants with different designs using early loading at 6 weeks.

Setting And Design: In vivo-comparative study.

Materials And Methods: Forty subjects were selected and divided randomly by sealed envelope method in Group X and Group A for early loading for missing single posterior tooth in mandible. Read More

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A Case of Dominant Dystrophic Epidermolysis Bullosa with a G2043R Mutation in the Type VII Collagen Gene.

Acta Dermatovenerol Croat 2020 Dec;28(4):251-252

Sayaka Yamaguchi, MD, PhD, Department of Dermatology Graduate School and Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0125, Japan;

Dear Editor, Dystrophic epidermolysis bullosa (DEB) is a subepidermal bulla, characterized by severe itching, lichenoid or nodular prurigo-like lesions, skin erosion, scars, milia, and nail dystrophy, resulting from COL7A1 mutation. Herein, we report a case of dominant DEB with a G2043R mutation in COL7A1. A-25-year-old Japanese woman was referred to our clinic for recurrent intense pruritis and hypertrophic scars on the abdomen (Figure 1, a). Read More

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December 2020

[Interarch distance is a target restorative space value: clinical decisionmaking of implant restoration guided by measured value].

Hua Xi Kou Qiang Yi Xue Za Zhi 2021 Apr;39(2):233-237

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

When design an implant restoration for edentulous patients, many doctors ignore the sufficiency of the interarch distance (vertical distance) or horizontal distance of the patient to accommodate the superstructure and restoration before designing the implant plan. However, the connotation of measuring the interarch distance or horizontal distance has not been clarified in clinical practice. It is often based on visual estimation after operation, and the decision-making path of implant restoration is inverted, resulting in many mistakes regarding the restoration after implantation. Read More

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[Investigation and analysis of oral health status of the elderly in nursing homes in Taiyuan].

Hua Xi Kou Qiang Yi Xue Za Zhi 2021 Apr;39(2):175-181

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

Objectives: This study aims to investigate awareness of oral health care and health status among elderly people in nursing homes in Taiyuan. Strategies for preventing and treating oral diseases and improving the quality of life of the elderly in nursing homes were formulated on the basis of analyzed data.

Methods: A total of 359 participants from 48 nursing homes in six districts were selected randomly. 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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[Effect of different orthodontic forces on the expression of T helper cell 17 cell-related cytokines in the pressure side of periodontal tissue in rats].

Hua Xi Kou Qiang Yi Xue Za Zhi 2021 Apr;39(2):143-152

Dept. of Orthodontics, Qingdao Stomatological Hospital Affiliated to Qingdao University, Qing-dao 266001, China.

Objectives: This study aimed to explore the changes in the expression of the characteristic transcription factor retinoid related orphan receptor γt (RORγt) and the cytokine interleukin-17 (IL-17) of T helper cell 17 (Th17) in the pressure side of the periodontal tissue of rats under different orthodontic forces. Their effects on the expression of osteoprotegerin (OPG) and the quantity of osteoclast (OC) were also explored. The role of Th17 cell in alveolar bone remodeling under different forces was preliminarily investigated. Read More

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A Full Digital Workflow for the Duplication of an Existing Implant Retained Overdenture Prosthesis: A Novel Approach.

J Prosthodont 2021 Apr 8. Epub 2021 Apr 8.

Associate Professor, Division of Prosthodontics, Department of Restorative Dental Sciences, University of Florida - College of Dentistry, Gainesville, Florida.

The purpose of this clinical case report is to describe a fully digital workflow for the duplication of an existing implant retained overdenture, highlighting the benefits of digitally fabricated dentures. The patient presented with an existing mandibular implant retained overdenture on Locator attachments that needed to be replaced. The existing overdenture was duplicated/scanned with the use of an intraoral scanner and was 3D printed using acrylic resin. Read More

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Instruments to assess upper-limb function in children and adolescents with neuromuscular diseases: a systematic review.

Dev Med Child Neurol 2021 Apr 8. Epub 2021 Apr 8.

Department of Health Science, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.

Aim: To synthesize clinical and scientific evidence regarding the instruments available to assess upper-limb function in paediatric patients with neuromuscular disease (NMD).

Method: This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses and COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) guidelines (Prospective Registry of Systematic Reviews no. CRD42020140343). Read More

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Profiles of inflammation factors and inflammatory pathways around the peri-miniscrew implant.

Histol Histopathol 2021 Apr 9:18336. Epub 2021 Apr 9.

Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China.

Background: Peri-miniscrew implant is a temporary assistant armamentarium for the treatment of severe malocclusion and complex tooth movement, the inflammation around it is the main reason for the failure of orthodontic treatment due to the implant loosening and falling out. Inflammation around the peri-miniscrew implant is associated with the release of pro-inflammatory cytokines. These pro-inflammatory cytokines, in turn, recruit immune cells (such as macrophages, dendritic cells, T cells, and B cells), which can produce and release inflammatory biomarkers, regulate the interaction between immune cells, periodontal ligament cells, osteoblasts, and so on. Read More

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Association of parental-reported vitamin D supplementation with dental caries of 3-year-old children in Poland: a cross-sectional study.

Clin Oral Investig 2021 Apr 8. Epub 2021 Apr 8.

Department of Paediatric Dentistry, Medical University of Warsaw, Binieckiego St. 6, 02-097, Warsaw, Poland.

Objective: The study aimed to assess the association between parental-reported vitamin D supplementation and caries in a national sample of 3-year-olds in Poland.

Materials And Methods: A total of 1900 children, representing all provinces of Poland, were invited. The questionnaires concerned vitamin D supplementation, socio-demographics, and oral health behaviours. Read More

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Antimicrobial Peptide-Polymer Conjugates for Dentistry.

ACS Appl Polym Mater 2020 Mar 2;2(3):1134-1144. Epub 2020 Jan 2.

University of Kansas (KU), Lawrence, Kansas.

Bacterial adhesion and growth at the composite/adhesive/tooth interface remain the primary cause of dental composite restoration failure. Early colonizers, including , play a critical role in the formation of dental caries by creating an environment that reduces the adhesive's integrity. Subsequently, other bacterial species, biofilm formation, and lactic acid from demineralize the adjoining tooth. Read More

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The Efficiency of Fluoride Bioactive Glasses in Protecting Enamel Surrounding Orthodontic Bracket.

Biomed Res Int 2021 24;2021:5544196. Epub 2021 Mar 24.

Physical Sciences in Relation to Dentistry, Institute of Dentistry, Dental Physical Sciences Unit, Queen Mary University of London, London, UK.

Objectives: The aim of this study was to evaluate the protective effect of using four different fluoride bioactive enamel sealers against an acidic erosion challenge.

Materials And Methods: A sample of 50 freshly extracted sound upper premolars had their buccal surface bonded to 50 orthodontic brackets using Transbond PLUS color change adhesive; the first four groups had four compositions of fluoride bioactive glasses based on 37 mol% SiO, 43.9-53. Read More

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