Influence of veneering technique and veneer-coping thickness on fracture toughness of implant retained veneered Y-TZP zirconia crowns (Englisch)

VNU Science Press , Utrecht; 2017

The aim of the study is to investigate the influence of veneering technique and veneer-coping thickness on the fracture toughness of implant retained zirconia crowns. Eighty zirconia copings are fabricated, half of which have 0.5 mm and the other half 1 mm thickness. Each 0.5 mm and 1 mm thickness coping is veneered to overall thickness of 3 and 4 mm using layering and hot press methods. Metal ceramic crowns with veneer-coping thickness of 2.5/0.5 mm are used as controls. All specimens are cemented to implant abutments using zinc oxide eugenol cement and tested using a micro-indenter. Crack lengths for specimens are evaluated to calculate fracture toughness using a formula. Results are analyzed using ANOVA. Veneer-coping thickness of 2.5/0.5 (5:1) and 3.5/0.5 (7:1) show significantly better (p = 0.001) fracture toughness as compared to V/C thickness of 2/1 (2:1) and 3/1 (3:1) for implant retained zirconia crowns. Metal ceramic crowns show significantly higher fracture toughness (p = 0.01) as compared to zirconia crowns of similar veneer/coping thickness. Veneering technique did not influence fracture toughness of zirconia crowns and hot-pressing is a viable technique for veneering Zr copings. Higher veneer-coping ratios i.e. thicker veneer and thinner copings, of zirconia crowns demonstrate better fracture toughness.

Dokumentinformationen


Inhaltsverzeichnis – Band 31, Ausgabe 16

Zeige alle Jahrgänge und Ausgaben

Die Inhaltsverzeichnisse werden automatisch erzeugt und basieren auf den im Index des TIB-Portals verfügbaren Nachweisen der enthaltenen Aufsätze. Die Anzeige der Jahrgänge kann aufgrund fehlender Aufsatznachweise unvollständig oder lückenhaft sein, obwohl die Zeitschrift komplett in der TIB verfügbar ist.

1747
Properties investigation on electrically conductive adhesives based on acrylate resin filled with silver microsheets and silver plating carbon fibers
Lu, Long-Fei / Cao, Xian-Jue / Qi, Shu-Hua | 2017
1758
Influence of veneering technique and veneer-coping thickness on fracture toughness of implant retained veneered Y-TZP zirconia crowns
Vohra, Fahim / Bin Ismail, Ikmal Hisham / Al-Rifaiy, Mohammad Qasim / Abduljabbar, Tariq / Abualsaud, Haitham / Ali, Mohsin / Abu Hasan, Mohamed Ibrahim | 2017
1768
Biofunctionalization of commercially pure titanium with chitosan/hydroxyapatite biocomposite via silanization: evaluation of biological performances
Vyas, Veena / Kaur, Tejinder / Kar, Sumanta / Thirugnanam, A. | 2017
1782
Strain rate and curing condition effects on the stress–strain behaviour of epoxy adhesive materials
Paul, Shiddartha / Motalab, Mohammad / Zobayer, Md. Ali / Hossain, Md. Jakir | 2017
1796
Study on benzoxazine-based film adhesive and its adhesion properties with CFPR composites
Li, Hongfeng / Gu, Jiyou / Wang, Dezhi / Qu, Chunyan / Zhang, Yang | 2017
1807
Experimental investigation of nanoparticles effects on cohesive model and bridging laws of mode I fracture in the adhesive joints
Ghabezi, Pouyan / Farahani, Mohammad Reza | 2017
1824
Moisture and temperature degradation of double cantilever beam adhesive joints
Viana, G. / Costa, M. / Banea, M. D. / da Silva, L. F. M. | 2017
1839
Effects of different compatilizers on mechanical, crystallization and thermal properties of polypropylene/magensium oxysulfate whisker composites
Dang, Li / Nai, Xueying / Zhu, Donghai / Xu, Naicai / Dong, Yaping / Li, Wu | 2017

Ähnliche Titel