35,769 results match your criteria three teeth

Early implant placement with or without alveolar ridge preservation in single tooth gaps renders similar esthetic, clinical and patient-reported outcome measures: one-year results of a randomized clinical trial.

Clin Oral Implants Res 2021 Jun 15. Epub 2021 Jun 15.

Department of Oral & Maxillofacial Surgery, Erasmus University Medical Center Rotterdam, the Netherlands.

Objectives: To test whether early implant placement with alveolar ridge preservation (ARP) results in different esthetic, clinical and patient-reported outcome measures (PROMs) compared to early implant placement without ARP.

Material And Methods: Seventy-five patient requiring single tooth extraction in the anterior maxilla were recruited. Following tooth extraction, the patients were randomly allocated to three groups: 1) ARP using demineralized bovine bone mineral containing 10% collagen (DBBM-C) covered by a collagen matrix (CM) (n = 25), 2) ARP using DBBM-C covered with a palatal graft (PG) (n = 25), 3) spontaneous healing (control) (n = 25). Read More

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Three-dimensional assessment of the spheno-occipital synchondrosis and clivus after tooth-borne and bone-borne rapid maxillary expansion.

Angle Orthod 2021 Jun 15. Epub 2021 Jun 15.

Objectives: To assess changes in spheno-occipital synchondrosis after rapid maxillary expansion (RME) performed with conventional tooth-borne (TB) and bone-borne (BB) appliances.

Materials And Methods: This study included 40 subjects with transverse maxillary deficiency who received TB RME or BB RME. Cone-beam computed tomography images (CBCT) were taken before treatment (T0), and after a 6-month retention period (T1). Read More

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Tooth loss is associated with an increased risk of hypertension: A nationwide population-based cohort study.

PLoS One 2021 15;16(6):e0253257. Epub 2021 Jun 15.

Department of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul, Korea.

Tooth loss is closely associated with suboptimal oral care. Suboptimal oral care can facilitate local infections. These can lead to systemic inflammation and endothelial dysfunction, which are important pathological mechanisms of hypertension. Read More

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The effect of different chelators on the dislodgement resistance of MTA Repair HP, MTA Angelus, and MTA Flow.

Odontology 2021 Jun 15. Epub 2021 Jun 15.

Department of Endodontics, Faculty of Dentistry, Antalya Bilim University, Antalya, Turkey.

The aim of this study was to investigate the influence of various irrigants on the dislodgement resistance of MTA Repair HP, MTA Angelus, and MTA Flow to root dentin. Three slices (1.0 ± 0. Read More

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Targeting hepatocyte growth factor in epithelial-stromal interactions in an in vitro experimental model of human periodontitis.

Odontology 2021 Jun 14. Epub 2021 Jun 14.

Charité - Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Augustenburger Platz 1, 13353, Berlin, Germany.

Periodontitis is a chronic inflammatory disease leading to progressive connective tissue degradation and loss of the tooth-supporting bone. Clinical and experimental studies suggest that hepatocyte growth factor (HGF) is involved in the dysregulated fibroblast-epithelial cell interactions in periodontitis. The aim of this study was to explore effects of HGF to impact fibroblast-induced collagen degradation. Read More

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Protocol for A randomised feasibility trial comparing fluoride interventions to prevent dental decay in older people in care homes (FInCH trial).

BMC Oral Health 2021 Jun 14;21(1):302. Epub 2021 Jun 14.

Faculty of Dentistry, Oral and Craniofacial Sciences, Dental Public Health, Centre for Host Microbiome Interactions, King's College London, Denmark Hill Campus, Bessemer Road, London, SE59RS, UK.

Background: The number and proportion of older people globally is growing faster than that of any other age group. At the same time the number of people retaining some of their own teeth is rising. There significant differences between those living in care and their community dwelling peers, with evidence showing those in care having fewer teeth and significantly higher levels of dental decay. Read More

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Root canal pre-treatment and adhesive system affect bond strength durability of fiber posts ex vivo.

Clin Oral Investig 2021 Jun 14. Epub 2021 Jun 14.

Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin und Humboldt-Universität zu Berlin, Berlin, Germany.

Objectives: To investigate the effect of different pre-treatments on the long-term bond strength of fiberglass posts luted either with dual-curing self-etch adhesives and core build-up composites or with a self-adhesive resin (SAR) cement.

Materials And Methods: In total, 180 human root-filled teeth received post-space preparations and three different dentin pre-treatments (PTs): PT1, ethanol (99%); PT2, ethanol-tertiary-butanol-water-solution (AH Plus Cleaner, Dentsply Sirona; York, USA); and PT3, distilled water (control). Five luting systems were used: FU, Futurabond U (Voco; Cuxhaven, Germany); CL, Clearfil DC Bond (Kuraray Noritake; Okayama, Japan); GR, Gradia Core SE Bond (GC Europe NV; Leuven, Belgium); LU, LuxaBond Universal (DMG; Hamburg, Germany); and RX, RelyX Unicem 2 (3M; Minnesota, USA). Read More

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Visual or visual-tactile examination to detect and inform the diagnosis of enamel caries.

Cochrane Database Syst Rev 2021 Jun 14;6:CD014546. Epub 2021 Jun 14.

Dundee Dental School, University of Dundee, Dundee, UK.

Background: The detection and diagnosis of caries at the initial (non-cavitated) and moderate (enamel) levels of severity is fundamental to achieving and maintaining good oral health and prevention of oral diseases. An increasing array of methods of early caries detection have been proposed that could potentially support traditional methods of detection and diagnosis. Earlier identification of disease could afford patients the opportunity of less invasive treatment with less destruction of tooth tissue, reduce the need for treatment with aerosol-generating procedures, and potentially result in a reduced cost of care to the patient and to healthcare services. Read More

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Micro-computed tomographic evaluation of single-cone obturation with three sealers.

Restor Dent Endod 2021 May 16;46(2):e25. Epub 2021 Apr 16.

University of New England College of Dental Medicine, Portland, ME, USA.

Objectives: This study used micro-computed tomography (µCT) to compare voids and interfaces in single-cone obturation among AH Plus, EndoSequence BC, and prototype surface pre-reacted glass ionomer (S-PRG) sealers and to determine the percentage of sealer contact at the dentin and gutta-percha (GP) interfaces.

Materials And Methods: Fifteen single-rooted human teeth were shaped using ProTaper NEXT size X5 rotary files using 2.5% NaOCl irrigation. Read More

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Shaping ability and apical debris extrusion after root canal preparation with rotary or reciprocating instruments: a micro-CT study.

Restor Dent Endod 2021 May 25;46(2):e16. Epub 2021 Feb 25.

Department of Endodontics, State University of Rio de Janeiro (UERJ) School of Dentistry, Rio de Janeiro, RJ, Brazil.

Objectives: The aim of this study was to evaluate the shaping ability of the TruShape and Reciproc Blue systems and the apical extrusion of debris after root canal instrumentation. The ProTaper Universal system was used as a reference for comparison.

Materials And Methods: Thirty-three mandibular premolars with a single canal were scanned using micro-computed tomography and were matched into 3 groups ( = 11) according to the instrumentation system: TruShape, Reciproc Blue and ProTaper Universal. Read More

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Whitening Efficacy of 3% Carbamide Peroxide Gel Activated by Lactoperoxidase.

Int J Dent 2021 26;2021:7143623. Epub 2021 May 26.

Faculty of Dental Medicine, University of Monastir, Monastir, Tunisia.

Objective: The aim of this clinical study was to evaluate the effectiveness of a whitening toothpaste containing 3% carbamide peroxide and lactoperoxidase. . Participants were instructed to brush their teeth using an enzymatic-activated dentifrice following a particular procedure for three weeks. Read More

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Comparison of preemptive ibuprofen, acetaminophen, and placebo administration in reducing peri- and postoperative pain in primary tooth extraction: A randomized clinical trial.

Clin Exp Dent Res 2021 Jun 13. Epub 2021 Jun 13.

Department of Paediatric Dentistry, Tishreen University, Lattakia, Syria.

Background: The management of pain resulting from anesthesia injection, tooth extraction and in the period after extraction is of great importance in pediatric dentistry.

Objective: The aim of this study was to compare the efficacy of the preemptive administration of ibuprofen or acetaminophen with placebo in reducing the pain during injection, extraction and postoperatively in children undergoing primary tooth extraction.

Material And Methods: A randomized, placebo-controlled, triple-blinded clinical trial of cooperative children who needed primary molar extraction by local anesthesia. Read More

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Fabrication and applications of bioactive chitosan-based organic-inorganic hybrid materials: A review.

Carbohydr Polym 2021 Sep 8;267:118179. Epub 2021 May 8.

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China. Electronic address:

Organic-inorganic hybrid materials like bone, shells, and teeth can be found in nature, which are usually composed of biomacromolecules and nanoscale inorganic ingredients. Synergy of organic-inorganic components in hybrid materials render them outstanding and versatile performance. Chitosan is commonly used organic materials in bionic hybrid materials since its bioactive properties and could be controllable tailored by various means to meet complex conditions in different applications. Read More

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September 2021

Are periodontal diseases associated with sleep duration or sleep quality? A systematic review.

Arch Oral Biol 2021 Jun 6;129:105184. Epub 2021 Jun 6.

Department of Periodontology, School of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS, 96015-560, Brazil. Electronic address:

Objectives: This study aimed to systematically review the associations between periodontal diseases/tooth loss and sleep duration/quality.

Material And Methods: PubMed, Scopus, and Embase databases were searched (up to May 2021) to identify studies that assessed the association between periodontal diseases or number of teeth with sleep quality and sleep duration. Two researchers independently selected the studies and extracted the data. Read More

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Clinical outcomes of tooth-supported leucite-reinforced glass-ceramic crowns after a follow-up time of 13-15 years.

J Dent 2021 Jun 9:103721. Epub 2021 Jun 9.

Clinic for Restorative Dentistry, University of Zurich, Switzerland. Electronic address:

Objectives: The aim of this retrospective clinical study was to investigate the survival rate, technical and biologic complications of leucite-reinforced glass-ceramic crowns after a follow-up time of 13-15 years.

Material And Methods: Fifty-three patients with 131 crowns were invited to the follow-up visit. The reconstructions were re-examined clinically and radiographically using the modified USPHS criteria and periodontal parameters of probing pocket depth (PPD), plaque index (PI), sulcus bleeding index (SBI). Read More

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A Novel Study on Alar Mobility of HAN Female by 3dMD Dynamic Surface Imaging System.

Aesthetic Plast Surg 2021 Jun 11. Epub 2021 Jun 11.

Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Aim: The aim of this study is to conduct a quantitative analysis on alar mobility of HAN females and provided referenced materials for alar dynamic aesthetic.

Methods: One hundred and fifty healthy HAN females without rhinoplasty, nasal injury, nasal deformity and craniofacial deformity were included in this study. 3dMD surface imaging system was used for anthropometric analysis. Read More

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Retention: taking a more active role.

Br Dent J 2021 Jun 11;230(11):731-738. Epub 2021 Jun 11.

Department of Orthodontics, School of Dentistry, University of Washington, Health Sciences Centre, Seattle, Washington, USA.

Retention may be particularly challenging after the correction of specific malocclusion features, such as tooth rotations, open bite and expansion, which are all inherently unstable. In this article, some indications for active retention are reviewed by highlighting a variety of clinical techniques and appliances. Active retention is discussed in relation to preservation of tooth alignment and in the three planes of space: sagittal, vertical and transverse. Read More

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Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser for Root Conditioning and Reduction of Postoperative Morbidity in the Treatment of Gingival Recession Defects: A Randomized Controlled Clinical Trial.

Photobiomodul Photomed Laser Surg 2021 Jun 11. Epub 2021 Jun 11.

Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA.

This clinical trial evaluates the effect of erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) root surface biomodification and laser harvesting of de-epithelialized gingival graft (DGG) on root coverage clinical outcomes and postoperative morbidity, and compares this to the conventional blade-harvested DGG method without Er,Cr:YSGG root surface biomodification in treatment of Miller's class I, II gingival recessions (GR). The application of laser technology to enhance tooth root coverage clinical outcomes as well as the impact of laser on postoperative morbidity after harvesting autogenous soft tissue grafts requires further research. This study is a randomized, single-blinded controlled trial, including 24 volunteers with isolated GR defects. Read More

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Clinical and radiographic performance of self-locking conical connection implants in the posterior mandible: five-year results of a two-centre prospective study.

Clin Oral Implants Res 2021 Jun 11. Epub 2021 Jun 11.

Department of Oral and Maxillofacial Surgery, Johannes Gutenberg-University, Medical Centre, Augustusplatz 2, D-55131, Mainz, Germany.

Objective: This prospective study aims to assess the 5-year clinical performance of implants with internal conical connection and platform-switched abutments in the posterior mandible.

Material And Methods: Healthy adults missing at least two teeth in the posterior mandible and with a natural tooth mesial to the implant site received two or three adjacent implants. After a transmucosal healing period single crown restorations were cemented on platform-switched abutments. Read More

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Clinical Application of PEEK as a Provisional Fixed Dental Prosthesis Retained by Reciprocated Guide Surfaces of Healing Abutments During Dental Implant Treatment.

Int J Oral Maxillofac Implants 2021 May-Jun;36(3):581-586

Purpose: The aim of this study was to evaluate the clinical use of a high-performance polymer, polyether ether ketone (PEEK), as a material for use in provisional fixed dental prostheses (FDPs) that can be retained by reciprocated guide surfaces of hexagonal-shaped healing abutments during dental implant treatment.

Materials And Methods: Patients requiring teeth replacement with dental implants for partially and fully edentulous cases in the maxilla and mandible were included. The provisional FDP was fabricated with hex castable copings and PEEK granules using the lost wax technique. Read More

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Global Review of Dairy Recommendations in Food-Based Dietary Guidelines.

Front Nutr 2021 25;8:671999. Epub 2021 May 25.

National Dairy Council, Rosemont, IL, United States.

At present, there are ~100 countries with national food-based dietary guidelines. While the intent of these guidelines is to inform national-level dietary recommendations, they also tie into global health and sustainable development initiatives, since diet and nutrition are linked to outcomes for all 17 United Nations Sustainable Development Goals. Therefore, key messaging in food-based dietary guidelines plays an important role in both national and global health efforts. Read More

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Evaluation of physiodispenser assisted micro-osteoperforation on the rate of tooth movement and associated periodontal tissue status during individual canine retraction in first premolar extraction cases: A split-mouth randomized controlled clinical trial.

J World Fed Orthod 2021 Jun 7. Epub 2021 Jun 7.

Assistant Professor, Department of Orthodontics and Dentofacial Orthopedics, SCB Dental College and Hospital, Cuttack, Odisha, India.

Objective: To assess the rate of tooth movement and the periodontal tissue status over a period of 90 days with and without micro-osteoperforation (MOP).

Method: Thirty-three adults of the 19 to 25 age group undergoing labial fixed orthodontic treatment with bilateral maxillary first premolar extraction, requiring individual canine retraction as a part of the treatment plan, were recruited for this split-mouth randomized clinical trial. While performing micro-implant-assisted canine retraction in the maxillary arch, the experimental side received three MOPs each on the mesial and distal aspects of the canine root. Read More

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Novel calcium phosphate ion-rechargeable and antibacterial adhesive to inhibit dental caries.

Clin Oral Investig 2021 Jun 10. Epub 2021 Jun 10.

Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, USA.

Objectives: This study aimed to develop an antibacterial and calcium (Ca) and phosphate (P) rechargeable adhesive and investigate the effects of dimethylaminododecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP) on dentin bonding, biofilm response, and repeated Ca and P ion recharge and re-release capability for the first time.

Materials And Methods: Pyromellitic glycerol dimethacrylate (PMGDM), ethoxylated bisphenol A dimethacrylate (EBPADMA), 2-hydroxyethyl methacrylate (HEMA), and bisphenol A glycidyl dimethacrylate (BisGMA) formed the adhesive (PEHB). Three groups were tested: (1) Scotchbond (SBMP, 3 M) control, (2) PEHB + 30% NACP, and (3) PEHB + 30% NACP + 5% DMAHDM. Read More

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[The relationships between different surgical approaches for maxillary sinus augmentation and implant failure and complications: a retrospective cohort study].

Shanghai Kou Qiang Yi Xue 2021 Apr;30(2):214-218

Department of Oral and Maxillofacial Surgery, Hefei Stomatology Hospital. Hefei 230001, Anhui Province, China.

Purpose: To investigate the 5-year survival and complication rates of implants placed in grafted sinuses with different surgical approaches and analyze the causes for failure.

Methods: This study retrospectively observed the prognosis of patients who underwent maxillary sinus augmentation by means of lateral window technique(LWT) or transalveolar osteotomy technique (TOT) and simultaneously installed implants performed, in Hefei Stomatological Hospital. The primary predictor variables were surgical approaches, including LWT and TOT. Read More

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[Accuracy of implantation between two immediate implantation methods in mandibular molars].

Shanghai Kou Qiang Yi Xue 2021 Apr;30(2):135-139

College of Stomatology, Weifang Medical University. Weifang 261053, Shandong Province, China.

Purpose: To compare the accuracy of implant placement between modified and traditional immediate implant placement in mandibular molar regions.

Methods: Twenty-four patients were selected for immediate implantation in the molar area including 24 implantation sites. Preoperative cone-beam CT(CBCT) was conducted and then digital software Simplant 18. Read More

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Is There Any Association Between Neurodegenerative Diseases and Periodontitis? A Systematic Review.

Front Aging Neurosci 2021 24;13:651437. Epub 2021 May 24.

Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém, Brazil.

Neurodegenerative diseases are a group of progressive disorders that affect the central nervous system (CNS) such as Alzheimer, Parkinson, and multiple sclerosis. Inflammation plays a critical role in the onset and progression of these injuries. Periodontitis is considered an inflammatory disease caused by oral biofilms around the tooth-supporting tissues, leading to a systemic and chronic inflammatory condition. Read More

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Fatigue failure and success rate of lithium disilicate table-tops as a function of cement thickness.

J Prosthodont Res 2021 Jun 10. Epub 2021 Jun 10.

Section of Prosthodontics, Department of Biomedical and Neuromotor Science, Alma Mater Studiorum University of Bologna.

Purpose: Under thin, partial coverage restoration the proper cement thickness to be clinically employed still remains an issue. The aim of this study was to determine the failure and success rates of simplified lithium disilicate occlusal veneers as a function of cement thickness. The null hypothesis was that cement thickness has no effect on the fatigue resistance. Read More

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Tooth-borne versus tooth-bone-borne rapid maxillary expanders according to a stereophotogrammetric evaluation of facial soft tissues: a randomized clinical trial.

Orthod Craniofac Res 2021 Jun 9. Epub 2021 Jun 9.

Department of Orthodontics, Izmir Katip Celebi University, Izmir, Turkey.

The force exerted by the rapid raxillary expansion (RME) appliances provides expansion of the transverse dimension by splitting of the midpalatal suture. This expansion results in three-dimensional (3D) changes in maxillary position which also effects circummaxillary surrounding structures. Read More

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Reproductive diseases in captive Agoutis (Dasyprocta leporina).

Braz J Biol 2021 4;82:e237869. Epub 2021 Jun 4.

The University of the West Indies - UWI, Faculty of Food and Agriculture - FFA, Department of Food Production - DFP, The Open Tropical Forage-Animal Production Laboratory - OTF-APL, St. Augustine, Trinidad and Tobago.

Reproductive diseases have been well documented in domestic livestock such as sheep, goat, cattle and pigs. However, there is very little information on these diseases in the agouti (Dasyprocta leporina). The agouti is used for its meat in South America and the Caribbean. Read More

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Effect of Er:YAG laser radiation on pull-out fracture load of esthetic posts luted to root canal dentin with various resin cements.

Dent Res J (Isfahan) 2021 17;18:17. Epub 2021 Mar 17.

Student Research Committee, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.

Background: This study investigated the influence of erbium-doped: yttrium aluminum garnet (Er:YAG) laser on the pull-out fracture load of fiber-reinforced composite (FRC) posts luted to dentin with different resin cements.

Materials And Methods: In this experimental study, 90 premolars were endodontically treated. The post spaces were prepared, and the teeth were divided into three groups dependent on the cement applied for luting FRC posts: Group 1: An etch-and-rinse system, Group 2: A self-etch cement, and Group 3: A self-adhesive cement. Read More

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