Results 81 to 90 of about 11,609 (254)

Comparing Digital Reduction Guides and Free‐Hand Techniques for Predoctoral Crown Preparation Accuracy

Journal of Dental Education, EarlyView.
ABSTRACT Purpose/Objectives Insufficient tooth reduction compromises crown longevity and aesthetics. This study aimed to determine whether digitally designed, 3D‐printed reduction guides improved crown preparation accuracy and efficiency for dental students compared to freehand preparation.
Xiaoyue Shi, Shuncong Xu, Chenxuan Wei
wiley   +1 more source

Monolithic Zirconia for Prosthetic Reconstructions: Advantages and Limitations [PDF]

Current Oral Health Reports, 2017
Due to frequent clinical reports on chipping of the veneering ceramic applied on zirconia frameworks, non-veneered monolithic zirconia has been proposed in an attempt to improve the lifetime of metal-free fixed dental prostheses (FDPs). This review highlights the effects of microstructure and chemical composition on optical properties and mechanical ...
da Silva, Lucas Hian, de Lima, Erick, Hochman, Miriam, Özcan, Mutlu, Cesar, Paulo Francisco   +4 more
openaire   +2 more sources

Recycling End‐of‐Life Solid Oxide Cell Interconnect Assemblies into Commercial‐Grade AISI 304 Stainless Steels

steel research international, EarlyView.
This study validates a recycling pathway for converting interconnect assemblies from end‐of‐life SOC stacks into commercial‐grade AISI 304 steels. Using scrap‐based steelmaking operations, austenitic cast steels with <4.0% δ‐ferrite are successfully produced.
Jeraldine Lastam, Shine‐Od Mongoljiibuu, Alexander Specht, Daniel Grüner, Dmitry Sergeev, Urs A. Peuker, Michael Müller, Ruth Schwaiger   +7 more
wiley   +1 more source

Microstructure Evolution in Directionally Solidified Fe–C–Mn–(Si) Peritectic Steels

steel research international, EarlyView.
This study investigates how growth velocity and silicon additions affect dendritic morphology, primary arm spacing, and mushy‐zone evolution in directionally solidified quaternary peritectic steels. Silicon substantially broadens the freezing range and lengthens the mushy zone, increasing susceptibility to interdendritic cracking.
André Phillion, Olajide Akintayo, Muhammad Nabeel, Angshuman Podder, Guang Wang   +4 more
wiley   +1 more source

Translucency of monolithic and core zirconia after hydrothermal aging

Acta Biomaterialia Odontologica Scandinavica, 2015
Objective: To evaluate the hydrothermal aging effect on the translucency of partially stabilized tetragonal zirconia with yttria (Y-TZP) used as monolithic or fully milled zirconia and of core type. Methods: Twenty disc-shaped specimens (1 and 10 mm) for each type of monolithic and core Y-TZP materials were milled and sintered according to the ...
Fathy, Salma M., El-Fallal, Abeer A., El-Negoly, Salwa A., El Bedawy, Abu Baker   +3 more
openaire   +2 more sources

Residual Cement Excess of Composite Versus Glass Ionomer Cement in Implant‐Supported Single Crowns After Different Intraoral Exposure Times—A Randomized Controlled Clinical Trial

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objective To evaluate the frequency and quantity of residual cement after cementation of monolithic zirconia crowns with glass ionomer or resin composite cement on customized ceramic abutments, following different intraoral retention times. The influence of margin location, quadrant and implant region was also assessed.
Maria Weinreuter, Kevin Richter, Thomas Stober, Peter Rammelsberg, Stefanie Kappel   +4 more
wiley   +1 more source

Metal stain on monolithic zirconia restoration: A case report

The Journal of Advanced Prosthodontics, 2017
In restorative treatment using fixed dental prostheses, dentists should select appropriate restoration material among various types of dental materials. The strength, marginal fit, esthetics, wear resistance, biocompatibility, and cost are important factors in the choice of restoration materials.
Min-Sang Cha, Sang-Woon Lee, Yoon-Hyuk Huh, Lee-Ra Cho, Chan-Jin Park   +4 more
openaire   +2 more sources

Prosthetic Outcomes of Implant‐Assisted Maxillary Restorations in the Edentulous Maxilla: A Systematic Review and Meta‐Analysis

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives To evaluate the prosthetic outcomes of implant‐assisted maxillary full‐arch restorations with ≥ 3 years of follow‐up. Materials and Methods A systematic electronic literature search was conducted in five databases to identify randomised controlled trials and prospective clinical studies involving patients who received full‐arch ...
Ethan Ng, John Rong Hao Tay, Maria Rahmat, Luis Mezzomo, Gil Alcoforado, Nikos Donos   +5 more
wiley   +1 more source

Effect of Crown Design, Cement Type and Margin Depth on the Removal of Cement Remnants Around Single Implant‐Supported Restorations. An In‐Vitro Study

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives To assess the influence of crown design, cement type, and margin depth on the removal efficiency of residual cement around single implant‐supported restorations. Methods Twelve mandibular models with a missing first molar were fabricated and provided with single implant analogs (centrally/distally placed) and two different crown ...
Shaza Bishti, Christiane Apeldorn, Anne Rittich, Stefan Wolfart, Taşkın Tuna   +4 more
wiley   +1 more source

The Effect of Crown Height and Retentive Height of Abutment on the Fracture Resistance of Fatigued Monolithic Zirconia Anterior Implant Crowns—An In Vitro Study

Clinical Oral Implants Research, EarlyView.
ABSTRACT Objectives This laboratory study investigated the effect of two different retentive heights of Ti‐base abutments (3.5 and 5.5 mm) and crown heights (13 and 16 mm) on the load at failure and survival of monolithic zirconia implant‐supported crowns replacing a maxillary central incisor.
Esha Zahid, Jaafar Abduo, Attila Gergely, Roy Judge, Carolina Perez‐Rodriguez, Joseph Palamara   +5 more
wiley   +1 more source