scholarly journals Influence of core thickness and artificial aging on the biaxial flexural strength of different all-ceramic materials: An in-vitro study

2017 ◽  
Vol 36 (3) ◽  
pp. 296-302 ◽  
Author(s):  
Sibel DIKICIER ◽  
Simel AYYILDIZ ◽  
Julide OZEN ◽  
Cumhur SIPAHI
Keyword(s):  
Flexural Strength ◽  
Artificial Aging ◽  
Ceramic Materials ◽  
All Ceramic ◽  
Biaxial Flexural Strength ◽  
Core Thickness

Effects of artificial aging on the biaxial flexural strength of Ce-TZP/Al2O3 and Y-TZP after various occlusal adjustments

2017 ◽  
Vol 43 (13) ◽  
pp. 9951-9959 ◽  
Author(s):  
Il-Gwang Sim ◽  
Yooseok Shin ◽  
June-Sung Shim ◽  
Jong-Eun Kim ◽  
Jee-Hwan Kim
Keyword(s):  
Flexural Strength ◽  
Artificial Aging ◽  
Biaxial Flexural Strength

Effect of varying core thicknesses and artificial aging on the color difference of different all-ceramic materials

2014 ◽  
Vol 72 (8) ◽  
pp. 623-629 ◽  
Author(s):  
Sibel Dikicier ◽  
Simel Ayyildiz ◽  
Julide Ozen ◽  
Cumhur Sipahi
Keyword(s):  
Artificial Aging ◽  
Color Difference ◽  
Ceramic Materials ◽  
All Ceramic

Low Temperature Degradation of Y-TZP Ceramic for Dental Applications

2013 ◽  
Vol 873 ◽  
pp. 241-249
Author(s):  
Zhi Kai Wu ◽  
Ning Li ◽  
Wan Qian Zhao ◽  
Jia Zhen Yan
Keyword(s):  
Low Temperature ◽  
Substantial Reduction ◽  
Tetragonal Zirconia ◽  
Ceramic Materials ◽  
Dental Ceramics ◽  
All Ceramic ◽  
Long Time ◽  
Core Thickness ◽  
Dental Applications

Yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic has been recently introduced into prosthetic dentistry for the fabrication of crowns and fixed partial dentures (FPDs). The mechanical properties of Y-TZP are the highest ever reported for the all-ceramic materials. This is favorable for the fabrication of multi-unit posterior bridges and the substantial reduction in core thickness. However, Y-TZP ceramic is susceptible to low temperature degradation (LTD), which is detrimental to the long-time survival and aesthetics of zirconia restorations in vivo. This review summarizes the characterization, mechanisms, and influencing factors of the LTD in dental Y-TZP ceramic. In addition, the recent trend of exploring high aging resistant zirconia-based dental ceramics is discussed.

Mechanical Properties and Marginal Fitness of Glass Infiltrated Alumina Core Fabricated from Aqueous-Based Alumina Tape

2007 ◽  
Vol 330-332 ◽  
pp. 1377-1380
Author(s):  
Nam Sik Oh ◽  
S.I. Jeong ◽  
S.H. Kim ◽  
Keun Woo Lee ◽  
Myung Hyun Lee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Expansion ◽  
Flexural Strength ◽  
Epoxy Resin ◽  
Coefficient Of Thermal Expansion ◽  
Studentized Range ◽  
All Ceramic ◽  
Biaxial Flexural Strength ◽  
Alumina Composite ◽  
Ceramic Crown

This study was designed to evaluate mechanical properties and the marginal fitness of glass infiltrated alumina core fabricated from aqueous alumina tape. Utilizing the automatic Dr. Blade model (DP-150 of Japan JinChungjungGi manufacturer) fabricated the slurry into 0.5 ㎜ thickness aqueous-based alumina tape. The coefficient of thermal expansion and biaxial flexural strength of alumina composite produced from alumina tape were investigated. Three upper central resin incisors were prepared with 90o, 110o, 135o shoulder margin for all-ceramic crown. Individual tooth model’s impressions were taken 15times each to make epoxy resin die. Cores were made of alumina tape to each and every dies. Crown setting was done on the epoxy resin dies. The specimens were evaluated for measuring for marginal gaps of glass infiltrated alumina core fabricated from aqueous alumina tapes under 180 magnifications with Kan Scope(Sometech Vision, Korea) was done. The retained measurements were analyzed with Turkey’s Studentized Range Test for marginal fitness of each specimen. Coefficient of thermal expansion of alumina tape was 7.5x10-6/°C, and biaxial flexural strength was observed to be 498±32MPa. The marginal fits of alumina cores made of alumina tapes showed the least marginal gap of 41.5 ㎛ in the 110o shoulder margin, and increasingly with 135o, 90o shoulder margin. Marginal fitness should be better in angles larger than 90o.

scholarly journals Biaxial flexural strength of Turkom-Cera core compared to two other all-ceramic systems

2010 ◽  
Vol 18 (6) ◽  
pp. 607-612 ◽  
Author(s):  
Bandar Mohammed Abdullah Al-Makramani ◽  
Abdul Aziz Abdul Razak ◽  
Mohamed Ibrahim Abu-Hassan
Keyword(s):  
Flexural Strength ◽  
All Ceramic ◽  
Biaxial Flexural Strength

scholarly journals Comparative Analysis for Selection of Resin Luting Cements Based on Filler Content: An in vitro Study

2012 ◽  
Vol 13 (4) ◽  
pp. 481-486 ◽  
Author(s):  
Mandava Ramesh Babu ◽  
Vajapeyayajula RaviKiran ◽  
V Vinod ◽  
Devabhaktuni Saraswathi ◽  
Venugopal N Rao
Keyword(s):  
Comparative Analysis ◽  
Flexural Strength ◽  
Filler Content ◽  
Filler Loading ◽  
Luting Cements ◽  
Luting Agents ◽  
Luting Cement ◽  
All Ceramic ◽  
Selection Of

ABSTRACT Context Resin luting of all-ceramic restorations results in increased performance; however, the strengthening mechanism and the role of the mechanical properties of the resin are not fully understood. Objective The aim of this study was to investigate the effect of filler content on the flexural properties of resin luting agents and thereby selecting an appropriate resin luting cement. Materials and methods Three esthetic resin luting agents studied were Calibra (Dentsply); RelyX ARC and Panavia F. Ten beam-shaped specimen (L × W × H: 30 × 8 × 2 mm) were made for each of the material tests carried out. The specimens were stored in distilled water for 24 hours at 37°C. The specimens were then tested for flexural strength (MPa) and flexural modulus (GPa) using the three-point bending method on a universal material testing machine at a cross head speed of 0.5 mm/min. Data obtained were statistically analyzed using ANOVA followed by post-hoc - Tukey's test with p < 0.05 for statistical significance. Results Increase in mean strength related to an associated increase in the elastic modulus which in turn was related to the filler loading of the resin luting cements. Conclusion Strength and performance of resin-cemented allceramic restoration can be enhanced by the use of a resin luting cement having increased filler content. Clinical implications Resin-composite cements may be most suitable for adhesively bonded restorations, where margins are placed on supragingival enamel, and where ultimate strength and energy absorption are paramount. The selection criteria for a resin cement depends on its flexural strength. To a great extent, the flexural strength is dependent on the filler loading of the resin luting cement. Key message Fracture of brittle all-ceramic restoration can be prevented by using resin luting cement with higher filler loading. In other words, any resin luting cement with higher filler content has an improved performance in terms of clinical function and durability. How to cite this article Babu MR, RaviKiran V, Vinod V, Saraswathi D, Rao VN. Comparative Analysis for Selection of Resin Luting Cements Based on Filler Content: An in vitro Study. J Contemp Dent Pract 2012;13(4):481-486.

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