15,823 results match your criteria restorative materials


Defining Optimal Enzyme and Matrix Combination for Replating of Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes at Different Levels of Maturity.

Exp Cell Res 2021 Apr 10:112599. Epub 2021 Apr 10.

Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey; Department of Medical Biology, School of Medicine, Istanbul Medipol University, Istanbul, Turkey; Medical Biology and Genetics Graduate Program, Health Sciences Institute, Istanbul Medipol University, Istanbul, Turkey. Electronic address:

Human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CM) create an unlimited cell source for basic and translational research. Depending on the maturity of cardiac cultures and the intended downstream application, obtaining hiPSC-CMs as a single-cell, monolayer or three-dimensional clusters can be challenging. Here, we defined strategies to replate hiPSC-CMs on early days (D15-30) or later more mature (D60-150) differentiation cultures. Read More

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Assessment of preparation time and 1-year Invisalign aligner attachment survival using flowable and packable composites.

Angle Orthod 2021 Apr 13. Epub 2021 Apr 13.

Objectives: To compare preparation time and 1-year Invisalign aligner attachment survival between a flowable composite (FC) and a packable composite (PC).

Materials And Methods: Fifty-five participants (13 men and 42 women, mean age ± SD: 24.2 ± 5. 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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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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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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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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Clinical Performance of CAD/CAM Monolithic Lithium Disilicate Implant-Supported Single Crowns Using Solid or Pre-Drilled Blocks in a Fully Digital Workflow: A Retrospective Cohort Study With Up To 33 Months of Follow Up.

J Prosthodont 2021 Apr 11. Epub 2021 Apr 11.

Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, United States.

Purpose: To assess the clinical performance of CAD/CAM monolithic implant-supported restorations manufactured using a fully digital workflow and two different types of ceramic blocks.

Materials And Methods: One hundred and one patients received single-unit implant-supported restorations at a University predoctoral clinic. All restorations were designed and fabricated using either a pre-drilled LS block (group P, n = 59) or a conventional solid LS block with an occlusal opening drilled manually prior to crystallization (group M, n = 42). 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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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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Correction to: Integrating Transwomen and Female Athletes with Differences of Sex Development (DSD) into Elite Competition: The FIMS 2021 Consensus Statement.

Sports Med 2021 Apr 9. Epub 2021 Apr 9.

Centre for Exercise Sciences and Sports Medicine, FIMS Collaborating Centre of Sports Medicine, Rome, Italy.

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Debris Extrusion Using Reciproc Blue and XP Endo Shaper Systems in Root Canal Retreatment.

Int J Dent 2021 24;2021:6697587. Epub 2021 Mar 24.

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

This study aimed at assessing the performance of Reciproc Blue (RB) and XP Endo Shaper (XPS), used for canal retreatment on extracted teeth, in terms of debris extrusion and obturating materials removal. Thirty mandibular premolars were prepared to ProTaper X2 file, obturated using warm vertical compaction, and then incubated for 28 days at 100% humidity at 37°C. Teeth were randomly assigned into two groups, according to the system used for retreatment (RB and XPS). 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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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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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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