30,196 results match your criteria dental restorative


Restorative Rehabilitation of the Cleft Affected Occlusion - A Service Evaluation.

Eur J Prosthodont Restor Dent 2021 Apr 8. Epub 2021 Apr 8.

Liverpool University Dental Hospital, Pembroke Place, Liverpool L3 5PS, UK.

Cleft Lip and/or Palate (CLP) is the most common cranio-facial abnormality thought to be caused by a combination of genetic and environmental factors causing challenges with feeding, dental development and speech. Cleft affected individuals often present a unique set of challenges with regards to their oro-facial and dental development and require multidisciplinary care. This article aims to describe the role of the restorative dentist in the multidisciplinary management of cleft affected individuals and outlines the various clinical presentations and restorative challenges. Read More

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Analysis of Posterior Zirconia Crowns with Vertical Margin Preparations.

Authors:
J Stack B J Millar

Eur J Prosthodont Restor Dent 2021 Apr 13. Epub 2021 Apr 13.

Kings College London, Restorative Dentistry, Denmark Hill, London SE5 9RW.

Background: The interest in vertical crown preparation is growing and several variations are presented in the dental literature but limited clinical outcome data exists for teeth prepared for a vertical finish line.

Aim: To audit clinical outcomes for 73 teeth after vertical preparation for knife-edge zirconia crowns.

Method: Seventy-three teeth had knife-edge zirconia crowns placed after vertical finish line preparation. Read More

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Effect of different surface treatment on the repair bond strength of feldspathic porcelain.

Dent Med Probl 2021 Jan-Mar;58(1):107-113

Department of Restorative Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: Considering the use of silane-containing universal adhesives to enhance the repair bond strength of porcelain restorations, a question arises whether the application of these adhesives eliminates the need for a separate application of silane or not.

Objectives: This study aimed to assess the effect of various kinds of surface treatment, including hydrofluoric acid (HF) etching, the application of bis-silane and the use of universal adhesives, on the repair bond strength of feldspathic porcelain.

Material And Methods: In this experimental in vitro study, 70 porcelain disks were fabricated and divided into 7 groups (n = 10) for the following types of surface treatment: C (control group) - HF etching + silane + Porcelain Bond; HSB - HF etching + Single Bond; HSSB - HF etching + silane + Single Bond; HAB - HF etching + All Bond; HSAB - HF etching + silane + All Bond; HFB - HF etching + FuturaBond®; and HSFB - HF etching + silane + FuturaBond. Read More

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Development and characterization of self-etching adhesives doped with 45S5 and niobophosphate bioactive glasses: Physicochemical, mechanical, bioactivity and interface properties.

Dent Mater 2021 Apr 10. Epub 2021 Apr 10.

Discipline of Dental Materials, School of Dentistry, Federal University of Maranhão (UFMA), Av. dos Portugueses, 1966, 65080-805 São Luís, Maranhão, Brazil. Electronic address:

Objective: The aim of study was to develop and characterize experimental bioactive glasses (45S5 and niobophosphate bioactive glass (NbG)) and evaluate the effects of their addition in self-etching adhesive systems on physicochemical, mechanical, and bioactive properties, microtensile bond strength (μTBS), and nanoleakage (NL).

Methods: Two-step self-etching adhesive systems containing 5, 10, and 20 wt.% of 45S5 and NbG bioactive glasses were developed. Read More

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Pediatric dental treatments with pharmacological and non-pharmacological interventions: a cross-sectional study.

BMC Oral Health 2021 Apr 12;21(1):186. Epub 2021 Apr 12.

Alfarabi Dental College, Jeddah, Saudi Arabia.

Objectives: Behaviour management strategies involving pharmacological or non-pharmacological interventions during dental procedures should be considered to attain safe and successful treatment outcomes. This study compared the frequencies of use and the completeness of treatment with these interventions.

Methods: A total of 1725 dental records of patients up to 18 years old, who were treated in the King Abdulaziz Medical City in Jeddah City from October 2018 to June 2019, were used in this retrospective, cross-sectional study. Read More

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Stainless-steel crowns in children: Norwegian and Finnish dentists' knowledge, practice and challenges.

BMC Oral Health 2021 Apr 12;21(1):190. Epub 2021 Apr 12.

Nordic Institute of Dental Materials (NIOM), Oslo, Norway.

Background: Stainless-steel crowns (SSCs) are recommended for restorative treatment of young teeth severely affected by caries, fractures or dental developmental disorders (DDDs). However, despite recommendations and clinical evidence, SSCs are not widely used by general dentists, who favour extraction and more conventional restorations. The present study aimed to investigate the views of and use of SSCs among Norwegian and Finnish dentists. 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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Erosion of CAD/CAM restorative materials and human enamel: An in vitro study.

J Mech Behav Biomed Mater 2021 Apr 3;119:104503. Epub 2021 Apr 3.

Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, China; Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Japan. Electronic address:

This in vitro study used the same frequency and duration of acid contact as a previous in situ/in vivo study to evaluate the effect of erosion on CAD/CAM restorative materials and human enamel and to compare the effects of in vitro and in situ/in vivo acid challenges on CAD/CAM restorative materials and human enamel. The CAD/CAM restorative materials (IPS e.max CAD, Lava Ultimate, and PMMA block) and human enamel were eroded by immersion in 150 ml of cola drink for 14 days (4 × 5 min/day). Read More

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Effect of Diabetes on Rotary Instrumentation of Dentin.

J Endod 2021 Apr 9. Epub 2021 Apr 9.

Associate Professor and Chairman, Department of Endodontics, Rutgers School of Dental Medicine, Newark, NJ.

Introduction: Diabetes Mellitus (DM) may affect the physical and mechanical properties of dentin, which could potentially have an impact on root canal procedures. This study aimed to compare the amount of dentin removed by an endodontic rotary file, comparing dentin from diabetic patients to dentin from control patients under laboratory conditions.

Methods: The amount of dentin removed was tested using new F2 ProTaper files applied against the surface of prepared dentin disks for three different groups; diabetic type I (D1), diabetic type II (D2), and non-diabetic (Normal). Read More

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Identification of Fusobacterium nucleatum in primary and secondary endodontic infections and its association with clinical features by using two different methods.

Clin Oral Investig 2021 Apr 12. Epub 2021 Apr 12.

Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas - UNICAMP, Av. Limeira 901. Bairro Areao, Piracicaba, SP, Brazil.

Objective: Fusobacterium nucleatum is an important oral pathogen involved in endodontic infections. This study aimed to assess the frequency of Fusobacterium nucleatum in primary and secondary endodontic infections and its associations with the clinical features in a Brazilian population by using both culture and nested PCR methods.

Methods: A total of 100 microbial samples from patients with primary (n=50) and secondary endodontic infections (n=50) were analyzed by using culture and nested PCR methods. Read More

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The Effectiveness of Students' Performance in Preclinical Fixed Prosthodontics Course in Predicting Subsequent Clinical Performance.

J Prosthodont 2021 Apr 12. Epub 2021 Apr 12.

Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.

Purpose: To evaluate the correlation between students' achieved grades in a preclinical fixed prosthodontics course and their performance in the same discipline's clinical courses MATERIALS AND METHODS: This study was conducted in 2019 on seventy-six students who passed all preclinical and clinical fixed prosthodontics courses. Their final examination grades in preclinical and clinical prosthodontics courses were compiled and made anonymous. The Statistical Package for the Social Sciences (SPSS Version 23) was used to analyze the data. Read More

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Fracture load of zirconia implant supported CAD/CAM resin crowns and mechanical properties of restorative material and cement.

J Prosthodont Res 2021 Apr 9. Epub 2021 Apr 9.

Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine, University of Basel, Basel.

Purpose: To test if resin CAD/CAM materials should be considered for zirconia implants and how their mechanical properties affect the fracture load.

Methods: Fracture load of molar crowns of CAD/CAM materials (VITA CAD-Temp [CT], Cerasmart [CS], Lava Ultimate [LU], Pekkton Ivory [PK]) on zirconia implants (ceramic.implant, 4. Read More

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Artificial intelligence applications in restorative dentistry: A systematic review.

J Prosthet Dent 2021 Apr 9. Epub 2021 Apr 9.

Assistant Professor, J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, Texas.

Statement Of Problem: Artificial intelligence (AI) applications are increasing in restorative procedures. However, the current development and performance of AI in restorative dentistry applications has not yet been systematically documented and analyzed.

Purpose: The purpose of this systematic review was to identify and evaluate the ability of AI models in restorative dentistry to diagnose dental caries and vertical tooth fracture, detect tooth preparation margins, and predict restoration failure. Read More

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Effects of CGRP-Primed Dental Pulp Stem Cells on Trigeminal Sensory Neurons.

J Dent Res 2021 Apr 10:220345211004872. Epub 2021 Apr 10.

Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA, USA.

Dental pulp stem cells (DPSCs) are important in tooth physiology, contributing to development, repair, regeneration, and immunomodulatory processes. However, their role in inflammatory mechanisms underlying pulpitis is not well understood. We evaluated the influence of DPSCs stimulated with calcitonin gene-related peptide (CGRP), a proinflammatory neuropeptide, on the expression of mediators released from DPSCs and the effect of these mediators on sensory neuron activity. Read More

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Accuracy of a patient 3-dimensional virtual representation obtained from the superimposition of facial and intraoral scans guided by extraoral and intraoral scan body systems.

J Prosthet Dent 2021 Apr 7. Epub 2021 Apr 7.

Professor and Head, Division of Dental Biomaterials, Clinic for Reconstructive Dentistry, Center for Dental and Oral Medicine, University of Zürich, Zürich, Switzerland.

Statement Of Problem: A patient 3-dimensional virtual representation aims to facilitate the integration of facial references into treatment planning or prosthesis design procedures, but the accuracy of the virtual patient representation remains unclear.

Purpose: The purpose of the present observational clinical study was to determine and compare the accuracy (trueness and precision) of a virtual patient obtained from the superimposition procedures of facial and intraoral digital scans guided by 2 scan body systems.

Material And Methods: Ten participants were recruited. Read More

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Predicting transmitted irradiance through CAD/CAM resin composite crowns in a simulated clinical model.

Dent Mater 2021 Apr 6. Epub 2021 Apr 6.

Department of Operative/Restorative Dentistry, Periodontology and Pedodontics, Ludwig-Maximilians University Munich, Goethestrasse 70, 80336 Munich, Germany. Electronic address:

Objective: To predict the clinically relevant transmitted irradiance that is available for luting when a CAD/CAM restoration is inserted. The influence of irradiance, exposure distance, light curing unit (LCU) angulation and direction of polymerization is analyzed when curing through crowns of different thicknesses.

Methods: Three modern CAD/CAM resin-based composites (RBCs) were used to produce 45 crown-shaped specimens. Read More

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Three-dimensional positional accuracy of intraoral and laboratory implant scan bodies.

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

Associate Professor, Faculty of Dentistry, National University of Singapore, Singapore, Republic of Singapore. Electronic address:

Statement Of Problem: In the implant digital workflow, scan bodies provide the 3D position of digital implants in the virtual dental arch. However, limited evidence is available on scan body accuracy, selection, and usage.

Purpose: The purpose of this in vitro study was to evaluate the 3D positional accuracy of 4 intraoral and 6 laboratory scan body systems to the implants and laboratory replicas of an implant system under various torque magnitudes. Read More

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PILP remineralization of artificial and natural dentin carious lesions evaluated by nanoindentation and microcomputed tomography.

J Dent 2021 Apr 6:103659. Epub 2021 Apr 6.

Department of Preventative and Restorative Dental Sciences, UCSF School of Dentistry, San Francisco, CA, USA. Electronic address:

Objectives: The study evaluates the efficacy to remineralize artificial and natural dentin lesions through restorative dental procedures that include the Polymer-Induced Liquid Precursor (PILP) method comprising polyaspartic acid (pAsp).

Methods: Novel ionomeric cement compositions based on bioglass 45S5 and pAsp mixtures, as well as conditioning solutions (conditioner) containing 5 mg/ml pAsp, were developed and tested on demineralized dentin blocks (3-4 mm thick) on shallow and deep lesions with the thickness of 150 µm ± 50 and 700 µm ± 50, respectively. In the first treatment group, 20 µl of conditioner was applied to demineralized shallow (n = 3) and deep (n = 3) lesion specimens for 20 s before restoration with glass ionomer cement (RMGIC). Read More

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[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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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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Effect of guide sleeve material, region, diameter, and number of times drills were used on the material loss from sleeves and drills used for surgical guides: An in vitro study.

J Prosthet Dent 2021 Apr 5. Epub 2021 Apr 5.

Associate Professor, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Associate Professor, Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; Adjunct Professor, Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio.

Statement Of Problem: How material loss from sleeves and drills is affected when different guide sleeve materials and different sizes of implant drills are used for different regions of surgical guides is unclear.

Purpose: The purpose of this in vitro study was to compare the amount of material loss from different guide sleeves (zirconia and cobalt-chromium) and drills of different diameters during osteotomy preparation in different regions.

Material And Methods: Three tooth-supported surgical guides with sleeve holes positioned in the first premolar and second molar sites were prepared. Read More

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Evaluation of complete-arch implant scanning with 5 different intraoral scanners in terms of trueness and operator experience.

J Prosthet Dent 2021 Apr 5. Epub 2021 Apr 5.

Associate Professor, Department of Conservative Dentistry, Faculty of Dentistry, Semmelweis University, Budapest, Hungary. Electronic address:

Statement Of Problem: The intraoral scanning of the edentulous arch might be challenging for an inexperienced operator because of the large mucosal area and the use of scan bodies.

Purpose: The purpose of this ex vivo study was to compare the trueness of 5 intraoral scanners in replicating implant scan bodies and soft tissues in an edentulous maxilla and to investigate the effects of operator experience.

Material And Methods: The maxilla was resected from a fresh cadaver, 5 implants placed, and a reference scan made. Read More

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Batman or Joker? A mixed-method approach to understanding children's perceptions of dentists.

Authors:
Burak Buldur

Eur J Oral Sci 2021 Apr 7:e12787. Epub 2021 Apr 7.

Department of Pediatric Dentistry, Faculty of Dentistry, Sivas Cumhuriyet University, Sivas, Turkey.

It is important to understand children's perceptions of dentists in order to improve child-dentist communication. The aim of this mixed-methods study was to develop and validate a conceptual model of individual determinants of children's perceptions of dentists. A total of 1014 children completed an oral health behaviour form, a metaphor form, the Children's Fear Survey Schedule-Dental Subscale, the Dental Trust Scale, and the Early Childhood Oral Health Impact Scale. Read More

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Comparison of limited- and large-volume cone-beam computed tomography using a small voxel size for detecting isthmuses in mandibular molars.

Imaging Sci Dent 2021 Mar 28;51(1):27-34. Epub 2021 Jan 28.

Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, Bauru, Brazil, Brazil.

Purpose: This study was performed to compare the ability of limited- and large-volume cone-beam computed tomography (CBCT) to display isthmuses in the apical root canals of mandibular molars.

Materials And Methods: Forty human mandibular first molars with isthmuses in the apical 3 mm of mesial roots were scanned by micro-computed tomography (micro-CT), and their thickness, area, and length were recorded. The samples were examined using 2 CBCT systems, using the smallest voxels and field of view available for each device. Read More

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Toughening and polymerization stress control in composites using thiourethane-treated fillers.

Sci Rep 2021 Apr 7;11(1):7638. Epub 2021 Apr 7.

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

Filler particle functionalization with thiourethane oligomers has been shown to increase fracture toughness and decrease polymerization stress in dental composites, though the mechanism is poorly understood. The aim of this study was to systematically characterize the effect of the type of filler surface functionalization on the physicochemical properties of experimental resin composites containing fillers of different size and volume fraction. Barium glass fillers (1, 3 and 10 µm) were functionalized with 2 wt% thiourethane-silane (TU-Sil) synthesized de novo and characterized by thermogravimetric analysis. Read More

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Duration of dentin tubule occlusion by the calcium phosphate precipitation method: An in vivo study in beagle dogs.

Dent Mater J 2021 Apr 7. Epub 2021 Apr 7.

Department of Restorative Dentistry and Endodontology, Division of Oral Infections and Disease Control, Osaka University Graduate School of Dentistry.

The aim of the present study was to assess the duration of dentin tubule occlusion by the calcium phosphate precipitation (CPP) method in the vital teeth of beagle dogs. Vital teeth were treated using the CPP method, potassium oxalate, or a bonding agent (Liner bond II) after cavity preparation and acid etching. The dentin tubules of all groups, except for the bonding agent, opened more widely with time in the absence of plaque control. Read More

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The effect of space setting values and restorative block materials on the bonding of metal-free CAD/CAM onlay restorations.

Dent Mater J 2021 Apr 7. Epub 2021 Apr 7.

Department of Adhesive Dentistry, School of Life Dentistry at Tokyo, The Nippon Dental University.

The effects of space setting values and restorative materials on the bonding of metal-free CAD/CAM onlay restoration were examined quantitatively and qualitatively. Seventy-two standardized MODB onlay cavities, prepared using human molars were restored under nine conditions, based on three space setting values, Increased (IC), Standard (SC, control), Decreased (DC), and three restorative block materials, resin-composites (RC), lithium disilicate glass-ceramics (LD), Feldspar ceramics (FC, control). All the restored specimens were subjected to cyclic loading and thereafter the microtensile bond strength (µ-TBS) was measured and analyzed statistically. Read More

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Effects of desensitizer containing fluoroaluminocalciumsilicate glass nanoparticles on remineralization of root dentin subsurface lesions in vitro.

Dent Mater J 2021 Apr 7. Epub 2021 Apr 7.

Division of Restorative Dentistry, Department of Oral Interdisciplinary Medicine, Graduate School of Dentistry, Kanagawa Dental University.

We investigated the remineralization effects of Nanoseal (NS) dentin desensitizer on demineralized root dentin. Baseline lesion specimens prepared from bovine root dentin were immersed in artificial saliva (AS) or deionized water (DW) after treatment with NS or fluoride-free Nanoseal (NS(-)). Treatment and control groups comprised: 1, AS; 2, NS/AS; 3, NS(-)/AS; 4,NS/DW; 5, NS(-)/DW; and 6, baseline demineralization. Read More

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Idiopathic Facial Pain Syndromes.

Dtsch Arztebl Int 2021 Feb;118(6):81-87

Institute of Systems Neurosciences, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Department of Periodontics, Preventive and Restorative Dentistry, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Department of Oral and Maxillofacial Surgery (MKG), University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Background: Idiopathic facial pain syndromes are relatively rare. A uniform classification system for facial pain became available only recently, and many physicians and dentists are still unfamiliar with these conditions. As a result, patients frequently do not receive appropriate treatment. Read More

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February 2021

Implementing care coordination in a large dental care organization in the United States by upskilling front office personnel.

Hum Resour Health 2021 Apr 7;19(1):48. Epub 2021 Apr 7.

Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, 490 Illinois Street, Floor 11, Box 1242, San Francisco, CA, 94143, United States of America.

Background: Care coordination is a key strategy used to improve health outcomes and efficiency, yet there are limited examples in dentistry. A large dental accountable care organization piloted care coordination by retraining existing administrative staff to coordinate the care of high-risk patients. Following the pilot's success, a formal "dental care advocate" (DCA) role was integrated system-wide. Read More

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