A5069745673- Dental materials and restorations
- Dental Implant Techniques and Outcomes
- Dental Research and COVID-19
- Endodontics and Root Canal Treatments
- Dental Erosion and Treatment
- Dental Radiography and Imaging
- Bone Tissue Engineering Materials
- Periodontal Regeneration and Treatments
- Anatomy and Medical Technology
- Orthodontics and Dentofacial Orthopedics
- Recycling and utilization of industrial and municipal waste in materials production
- Laser Applications in Dentistry and Medicine
- Building materials and conservation
- Materials Engineering and Processing
- Innovative concrete reinforcement materials
- Conservation Techniques and Studies
Tufts University
2011-2016
Abstract Purpose To compare the marginal adaptation of 3‐unit zirconia fixed dental prostheses (FDPs) obtained from intraoral digital scanners (Lava True Definition, Cadent iTero), scanning a conventional silicone impression, and resulting master cast with an extraoral scanner (3Shape lab scanner). Materials Methods One reference model was fabricated intact, non‐carious, unrestored human mandibular left first premolar molar teeth (teeth #19 21), prepared for three‐unit all‐ceramic FDP....
Abstract Purpose The purpose of this study was to compare the effect variations in translucency and background on color differences (ΔE) for different shades computer‐aided design manufacturing (CAD/CAM) lithium disilicate glass ceramics. Materials Methods A pilot suggested n = 10 as an appropriate sample size number ceramic cylinders per group. High‐transparency (HT) low‐transparency (LT) (diameter, 12 mm; length, 13 mm) were fabricated three (BL1, A2, C3) using CAD/CAM technology cut into...
Abstract Purpose The purpose of this in vitro study was to compare the shear bond strength an airborne‐particle abraded zirconia, acid‐etched zirconia (Piranha solution), Alloy Primer treated and a silaned enamel, all bonded with phosphate‐methacrylate resin luting agent. Materials Methods Seventy extracted intact human molars were collected, cleaned, mounted autopolymerizing acrylic resin, experimental surface teeth exposed. specimens randomly divided into seven groups (4 mm diameter, 2...
Abstract Purpose The purpose of this in vitro study was to compare the fracture load one‐piece zirconia custom abutments with different thicknesses and angulations. Materials Methods Forty were divided into four groups. Group A‐1 group B‐1 simulated a clinical situation an ideal implant position, which allows for use straight two (0.7 1 mm). Groups A‐2 B‐2 compromised position requiring 15 ° angulated Implant replicas mounted self‐cure acrylic jigs support all engaged using manual torque...
Abstract Purpose The purpose of part II this in vitro study was to compare the fracture load two‐piece zirconia custom abutments with different thicknesses and angulations. Materials Methods Forty were divided into four groups as follows: group A1: 0.7 mm thickness 0° angulations; A2: 15° B1: 1 B2: As I, all groups, implant replicas mounted self‐cure acrylic jigs support abutments. engaged using a manual torque wrench. All secured metallic vice subjected shear stress till failure universal...
This in vitro study aimed to determine the ability of three resin cements retain zirconia copings under two clinically simulated conditions.Extracted human molars (72) were collected, cleaned, and divided into groups. All teeth prepared with a 15° total convergence angle for group 1 30° 2, flat occlusal surface, approximately 4-mm axial length. Each was by surface area subgroups (n = 12). abraded 50-μm Al(2)O(3), then cemented using Panavia F 2.0 (PAN-1) (PAN-2) Rely X Unicem (RXU-1)...
Abstract Purpose The purpose of this in vitro study was to evaluate the effects four surface treatments and two resin cements on repair bond strength a ceramic primer. Materials Methods Eighty‐eight pairs disks (10 5 mm diameter, 3 thickness) were prepared from heat‐pressed feldspar ceramics (GC Initial IQ). After being stored mucin‐artificial saliva for 2 weeks, 10‐mm divided into treatment groups (n = 22) then treated as follows: (1) no (control); (2) 40% phosphoric acid; (3) 5%...
The purpose of this in vitro study was to evaluate and compare the effectiveness different surface cleaning methods on shear bond strength (SBS) zirconia ceramic surfaces. Seventy polished cleaned disk specimens 8 mm diameter 3.4 thickness were immersed fresh saliva. They then pressed into a freshly mixed silicone disclosing medium. Six applied tested groups; they airborne-particle abraded (AA), covered with paste (Ivoclean®) (IV), etched orthophosphoric acid (PA), alcohol (AL), rinsed tap...
ABSTRACT Background: Color-matching of the cervical area between natural teeth and different crown prostheses is a common clinical problem. Purpose: The purpose this study was to compare color region five commercially available systems an extracted tooth each other. Materials Methods: maxillary incisor measured by means colorimeter (ShadeVision, X-Rite). Fifty master dies were fabricated, divided into groups (N = 10) according framework material; group 1: high-noble gold alloy, 2: same as 1...