scholarly journals An Overview of the Development and Strengthening of All-Ceramic Dental Materials

2018 ◽  
Vol 11 (3) ◽  
pp. 1553-1563
Author(s):  
Ghassan Abdul-Hamid Naji ◽  
Ros Anita Omar ◽  
Rosiyah Yahya
Keyword(s):  
English Language ◽  
Dental Materials ◽  
High Strength ◽  
Ceramic Materials ◽  
Successful Implementation ◽  
Framework Materials ◽  
Evolution And Development ◽  
All Ceramic ◽  
Manufacturing Techniques ◽  
Ceramic Restorations

High-strength all-ceramic systems for fixed partial dentures (FPDs) are necessary for replacing missing teeth. The ability to fabricate a restoration outside the mouth and subsequently integrate it with a tooth extends the range of materials available to be utilized by a dentist. This article presents a review of the development of all-ceramic restorations, including the evolution and development of materials, technologies and how to improve the strength of all-ceramic restorations, with respect to survival, applications, strength, color, and aesthetics. New core/framework materials have developed and evolved over the last decade because of the growth of ceramic materials and systems currently available for utilization. A search of English language reviewed literature was undertaken, which focused on the evidence-based published research articles. This review also elucidates the various all-ceramic materials and systems currently available for clinical use, and that no single universal material or system exists for all clinical cases. Successful implementation depends on the clinicians, materials, manufacturing techniques, and individual clinical condition. Further longitudinal clinical studies are recommended for the development of ceramic materials and systems.

scholarly journals Addition of a pontic to all-ceramic Turkom-Cera fixed partial denture restorations

2013 ◽  
Vol 07 (02) ◽  
pp. 233-238
Author(s):  
Bulent Uludag ◽  
Emre Tokar ◽  
Serdar Polat
Keyword(s):  
High Stress ◽  
High Strength ◽  
Ceramic Materials ◽  
Related Factors ◽  
Time Saving ◽  
Partial Denture ◽  
Fixed Partial Denture ◽  
All Ceramic ◽  
Alumina Gel ◽  
Ceramic Restorations

ABSTRACTHigh-strength all-ceramic materials are commonly used in dentistry. When complications occur in an all-ceramic restoration, the restoration is usually replaced. This article describes the time-saving ability and cost-effectiveness of this novel technique for the addition of a pontic in two complicated clinical cases. Turkom-CeraTM [Turkom-Ceramic (M) Sdn. Bhd.] with aluminum oxide (99.98%) is an all-ceramic system that offers the option of addition of a new pontic to the sintered framework. The new pontic was cut off from an alumina blank [Turkom-Ceramic (M) Sdn. Bhd.], moistened, and attached to the framework using alumina gel [Turkom-Ceramic (M) Sdn. Bhd.]. The framework was veneered with veneering porcelain (Vita VM 7; VITA Zahnfabrik). The two cases presented here involving the addition of a pontic to sintered framework were followed up for at least 1 year. No complication was detected or reported by the patients. Alumina- and zirconia-based ceramics are particularly suitable for for all-ceramic restorations in high-stress bearing areas. However, replacement of a failed all-ceramic restoration is not the most practical solution, considering both cost and tooth-related factors. This attractive feature of the Turkom-Cera allows the repair of a fractured ceramic coping or the addition of a new pontic to restorations.

Numerical Simulation of the Occlusal Contacts in Roots Restored with Complete Ceramic Materials

2013 ◽  
Vol 404 ◽  
pp. 152-157
Author(s):  
Liliana Porojan ◽  
Florin Topală ◽  
Sorin Porojan
Keyword(s):  
High Strength ◽  
Ceramic Materials ◽  
3D Models ◽  
Fracture Pattern ◽  
Element Analysis ◽  
Core System ◽  
Maxillary Central Incisor ◽  
All Ceramic ◽  
Abutment Teeth ◽  
Post And Core

Different high-strength, all-ceramic restorative systems are available for the restoration of endodontically treated roots. To date, many studies on fracture strength and fracture pattern have been conducted. Most of these studies focused on investigating stress distribution in the root dentin of abutment teeth restored with a post and core system. The objective of this study was to evaluate, by means of the finite element analysis, stresses induced in an endodontically treated maxillary central incisor that was restored with different all-ceramic systems during contacts with the antagonists. The first step of the study was to achieve 3D models in order to design and analyze teeth, all ceramic post and core systems and pressed ceramic crowns. Stress analysis was performed on the restored incisor during protrusion. As post and core materials pressed ceramics and zirconia were chosen, and for the full crown pressed ceramics was selected. Maximal equivalent stresses were recorded in the tooth structures and in the restorations for all contact areas. In the zirconia post and core systems stresses were higher than in the pressed ceramics post and core systems. The use of zirconia posts with a higher modulus of elasticity than pressed ceramics induce lower stresses in the dentin and higher in the crown than pressed ceramics posts.

scholarly journals Esthetic Rehabilitation of Anterior Teeth with Copy-Milled Restorations: A Report of Two Cases

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Sapna Rani ◽  
Jyoti Devi ◽  
Chandan Jain ◽  
Parul Mutneja ◽  
Mahesh Verma
Keyword(s):  
Clinical Success ◽  
Ceramic Materials ◽  
Digital Revolution ◽  
Anterior Teeth ◽  
All Ceramic ◽  
Computer Aided ◽  
Recent Developments ◽  
Cad Cam ◽  
Copy Milling ◽  
Ceramic Restorations

Digitalization has become part and parcel of contemporary prosthodontics with the probability of most of the procedures being based on the digital techniques in the near future. This digital revolution started in the latter half of the 20th century by converting analog objects/signals into digital bits and bytes. Recent developments in all-ceramic materials and systems of computer-aided designing and computer-aided manufacturing (CAD/CAM), copy milling, and so forth offer excellent esthetics and superb biocompatibility. Copy milling system for ceramics enables milling of the zirconia cores of all-ceramic restorations precisely and also if this system is properly used the procedure for fabricating all-ceramic restorations can be substantially simplified. This case report presents fabrication of all-ceramic Maryland Bridge and post-core with a copy milling system for esthetics and preservation of integrity of tooth. For both of the patients, the use of biologic, all-ceramic, copy-milled restorations resulted in clinical success and recovered function and esthetics.

High-strength CAD/CAM-fabricated veneering material sintered to zirconia copings — A new fabrication mode for all-ceramic restorations

2009 ◽  
Vol 25 (1) ◽  
pp. 121-128 ◽  
Author(s):  
F BEUER ◽  
J SCHWEIGER ◽  
M EICHBERGER ◽  
H KAPPERT ◽  
W GERNET ◽  
...  
Keyword(s):  
High Strength ◽  
All Ceramic ◽  
Cad Cam ◽  
Ceramic Restorations

scholarly journals Effect of the framework material on the final color of all-ceramic restorations

2013 ◽  
Vol 1 (3) ◽  
pp. 219
Author(s):  
Márcia Borba ◽  
Queli Nunes Sonza ◽  
Álvaro Della Bona
Keyword(s):  
Tetragonal Zirconia ◽  
Color Difference ◽  
Polycrystalline Alumina ◽  
Mean Values ◽  
Framework Materials ◽  
Significant Difference ◽  
All Ceramic ◽  
Ceramic Restorations ◽  
Study Hypothesis ◽  
Final Color

OBJECTIVES: to evaluate the effect of the type of ceramic framework material on the final color of all-ceramic restorations. The hypotheses tested were: (1) the final color of the restoration is different than the porcelain shade selected initially to veneer the framework and (2) different framework materials result in different colors of all-ceramic restorations. METHODS: Steel models simulating abutment teeth were used to design all-ceramic fixed partial dentures (FPDs). The FPDs were produced using three different framework materials (n=8): (YZ) yttria partially stabilized tetragonal zirconia polycrystal (LAVA, 3M); (IZ) glass-infiltrated alumina/zirconia (Vita In-Ceram Zirconia); (AL) polycrystalline alumina (Vita In-Ceram AL). Each framework was veneered with the recommended porcelain, VM9 for YZ and VM7 for IZ and AL groups (Vita). The porcelain shade used was 2M2. A uniform thickness of 1.2 mm of porcelain was applied around the retainers. The color difference (ΔE) and lightness difference (ΔL) between the selected porcelain shade (2M2) and the color of the final restoration were obtained using a clinical spectrophotometer (VITA Easyshade). Statistical analysis was performed using One-Way ANOVA and Tukey’s test (α=0.05). RESULTS: The ΔE mean values, standard deviation and statistical ranking for the experimental groups were: (YZ) 2.38 ± 0.44b; (IZ) 2.92 ± 0.67ab; (AL) 3.43 ± 0.84a. AL group showed the highest ΔE and ΔL mean values. IZ showed an intermediate ΔE value and statistically similar to AL and YZ groups. There was no significant difference between ΔL values for YZ and IZ groups. CONCLUSION:  Although the color difference between all experimental groups and the porcelain shade selected to veneer the restorations could be visually detected (ΔE>1.0), only AL showed a difference above the clinical threshold (ΔE>3.0). Thus, the first study hypothesis was partially accepted. In addition, the type of framework ceramic influenced the final restoration color, accepting the second study hypothesis.

scholarly journals Evaluation of zirconia bonding to veneering porcelain

2014 ◽  
Vol 60 (02) ◽  
pp. 51-56 ◽  
Author(s):  
Aneta Mijoska ◽  
Mirjana Popovska
Keyword(s):  
Zirconium Dioxide ◽  
Adhesive Bonding ◽  
High Strength ◽  
Dental Tissues ◽  
Dental Crowns ◽  
Standard Procedures ◽  
All Ceramic ◽  
Hard Dental Tissues ◽  
Ceramic Restorations

Zirconium dioxide as core ceramic material for dental crowns and bridges, possess high strength, chemical stability and superior aesthetics after veneering. Veneering ceramic is considered to be the weakest part of all-ceramic restorations. The adhesion between the core and veneering porcelain is based on the manner in which the connection occurs in metal-ceramic structures. Standard procedures for connecting zirconia to hard dental tissues and veneering materials do not achieve the required strength of bonding. The aim of the paper is to investigate different surface treatments of the zirconium dioxide ceramic core and find the best, for achieving highest adhesive bonding values to veneering porcelain. The study was primarily designed to investigate the bonding strength of the veneering porcelain to zirconia with in vitro Macro shear bond strength test. The specimens with different surface treatment of the zirconia were divided in five groups of twelve according to the treatment of zirconium surface and results showed highest bonding values for specimens treated with Rocatec system.

scholarly journals Contemporary All-ceramic Systems – Part 2

2007 ◽  
Vol 50 (2) ◽  
pp. 105-107 ◽  
Author(s):  
Shriharsha Pilathadka ◽  
Dagmar Vahalová
Keyword(s):  
Success Rate ◽  
Fracture Resistance ◽  
Clinical Success ◽  
High Strength ◽  
Ceramic Materials ◽  
In Vivo Studies ◽  
High Fracture ◽  
All Ceramic

Current all-ceramic materials offer a accepted level of fracture resistance, fit and aesthetics. High fracture resistance recommends it to be a material to support fixed partial denture (FPD) in a stress bearing area with clinical success. This part of the present literature review covers the success rate, selection criteria of all ceramic systems, cementation technique, finishing and polishing. In vitro and in vivo studies of new high strength ceramics were well documented. Data suggest that single crowns in the anterior and posterior region are more predictable than bridges. Well-studied longterm success rate for FPDs are very limited.

Recent Advances in Ceramics for Dentistry

1996 ◽  
Vol 7 (2) ◽  
pp. 134-143 ◽  
Author(s):  
Isabelle L. Denry
Keyword(s):  
Slip Casting ◽  
Glass Ceramics ◽  
Ceramic Materials ◽  
Dental Ceramics ◽  
New Materials ◽  
Dental Restorations ◽  
All Ceramic ◽  
Slip Cast ◽  
Processing Techniques ◽  
Ceramic Restorations

For the last ten years, the application of high-technology processes to dental ceramics allowed for the development of new materials such as heat-pressed, injection-molded, and slip-cast ceramics and glass-ceramics. The purpose of the present paper is to review advances in new materials and processes available for making all-ceramic dental restorations. Concepts on the structure and strengthening mechanisms of dental ceramics are provided. Major developments in materials for all-ceramic restorations are addressed. These advances include improved processing techniques and greater mechanical properties. An overview of the processing techniques available for all-ceramic materials is given, including sintering, casting, machining, slip-casting, and heat-pressing. The most recent ceramic materials are reviewed with respect to their principal crystalline phases, including leucite, alumina, forsterite, zirconia, mica, hydroxyapatite, lithium disilicate, sanidine, and spinel. Finally, a summary of flexural strength data available for all-ceramic materials is included.

scholarly journals Ceramic Restorations Based on Zirconium Dioxide for Orthopedic Dentistry

2021 ◽  
pp. 172-178
Author(s):  
Alina Anatolyevna Muzayeva ◽  
Abulmuslim Magomedovich Nuraliev ◽  
Saida Astanovna Temirova ◽  
Elena Anatolyevna Muzaeva ◽  
Turpal-Ali Arsanovich Adaev ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Solid Solutions ◽  
Zirconium Dioxide ◽  
High Strength ◽  
Scientific Work ◽  
Ceramic Materials ◽  
Strength Parameters ◽  
Ytterbium Oxide ◽  
Biomedical Materials ◽  
Ceramic Restorations

Currently, ceramics based on solid solutions of zirconium dioxide tetragonal structure are common biomedical materials. In commercially common ceramics of orthopedic dentistry based on zirconium dioxide, the stabilization of the tetragonal shape is achieved by the introduction of yttrium or cerium cations. As a result of this scientific work, a ceramic material based on nanopowders of a system of zirconium dioxide and ytterbium oxide with high strength parameters has been developed. The results of the conducted research allow us to recommend the new Yb–TZP ceramics as an alternative to Y–TZP ceramic materials for restorations in orthopedic dentistry.

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