نتایج جستجو برای: dental marginal adaptation
تعداد نتایج: 342772 فیلتر نتایج به سال:
OBJECTIVES The purpose of this study is to clinically and radiographically evaluate survival and success rate of multiple zirconia dental implants positioned in each patient during a follow-up period of at least 12 months up to 48 months. STUDY DESIGN Eight patients were treated for multiple edentulism with 29 zirconia dental implants. All implants received immediate temporary restorations an...
PURPOSE The aims of this randomized-controlled clinical trial were to compare marginal and internal adaptation of all-ceramic crowns fabricated with CAD/CAM and heat-pressed (HP) techniques before luting and to evaluate the clinical outcomes at baseline and at 6, 12, and 24 months after luting. MATERIALS AND METHODS Fifteen CAD/CAM (CC) and 15 HP all-ceramic crowns were placed in 15 patients....
In this clinical study, we evaluated the 3-year clinical performance of a resin composite containing a surface-prereacted glass ionomer (S-PRG) filler (Beautifil II; Shofu Inc., Kyoto, Japan) placed with a single-step self-etch adhesive (BeautiBond; Shofu Inc.) in posterior restorations. Using modified US Public Health Service criteria, two experienced investigators performed clinical evaluatio...
Introduction: The marginal bone change of 1 year loading was evaluated in the non-microthread collar and platform switching structured INNO® dental implant of which the surface is treated with the RBM sandblasting, hyper-thermal acid etching and alkali solution cleaning process for hydrophilic macroand micro-porosity. Material and Methods: A total of 144 implants were placed in the healed ridge...
PURPOSE To compare marginal and internal gaps of zirconia substructure of single crowns with those of three-unit fixed dental prostheses. MATERIALS AND METHODS Standardized Co-Cr alloy simulated second premolar and second molar abutments were fabricated and subsequently duplicated into type-III dental stone for working casts. After that, all zirconia substructures were made using Lava™ system...
This study was performed to examine the success of a conservative cavity preparation using the principle of "sealing for prevention" rather than "extension for prevention." A total of 332 restorations were placed in 243 permanent molars in 114 children aged 6-14 with a mean age of 8 years. After 80 months, 104 restorations were examined for sealant retention, marginal staining, anatomic wear, m...
Objective The aim of this in vitro study was to investigate the effect of Shoulder versus Chamfer margin design on the marginal adaptation of zirconia (Zr) copings. Materials and Methods 40 extracted molar teeth were mounted in resin and prepared for zirconia crowns with two margin preparation designs (20=Shoulder and 20=Chamfer). The copings were manufactured by Cercon® (DeguDent GmbH, Germa...
It has been shown that noble alloys require metal collar to resist distortion when subjected to repeat firing cycle of porcelain. Metal collar is undesirable due to esthetic concerns. Since base metal alloys have superior physical properties, it seems that metal collar would not be necessary for obtaining better marginal adaptation of base metal crowns. The Purpose of this study was to evaluate...
Dental calculus or tartar is an adherent calcified mass that form on the surface of teeth and dental appliance through mineralization of bacterial dental plaque in aqueous environment. Dental calculus plays a vital role in aggravating the periodontal disease by acting as reservoir for the bacterial plaque and providing the protected-covered niche for bacteria to proliferate. Based upon the loca...
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