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- Title
Fracture Strength After Fatigue Loading of Lithium Disilicate Pressed Zirconia Crowns.
- Authors
So-Yeun Kim; Jae-Won Choi; Sung-Won Ju; Jin-Soo Ahn; Mi-Jung Yoon; Jung-Bo Huh; Kim, So-Yeun; Choi, Jae-Won; Ju, Sung-Won; Ahn, Jin-Soo; Yoon, Mi-Jung; Huh, Jung-Bo
- Abstract
<bold>Purpose: </bold>The aim of this study was to evaluate the fracture resistance of fatigued lithium disilicate pressed zirconia crowns versus other ceramic crowns.<bold>Materials and Methods: </bold>Lithium disilicate pressed zirconia, fluorapatite pressed zirconia, monolithic lithium disilicate, and monolithic zirconia crowns were fabricated. Cyclic and static loadings were applied to the mesiobuccal cusp tip after thermocycling and fracture strengths were recorded.<bold>Results: </bold>Fatigued lithium disilicate pressed zirconia crowns were found to have a fracture resistance of 9,117.81 ± 727.04 N, compared with 9,240.61 ± 887.21 N for monolithic zirconia crowns, 3,030.18 ± 1,505.83 N for fluorapatite pressed zirconia crowns, and 4,173.94 ± 877.46 N for monolithic lithium disilicate crowns (P = .001).<bold>Conclusion: </bold>This in vitro study shows that fatigued lithium disilicate pressed zirconia and monolithic zirconia crowns have better fracture resistance than fluorapatite pressed zirconia and monolithic lithium disilicate crowns.
- Subjects
FRACTURE strength; MATERIAL fatigue; LITHIUM silicates; ZIRCONIUM oxide; DENTAL ceramics; CYCLIC loads; DEAD loads (Mechanics); TREATMENT of fractures; TEETH surgery; COMPARATIVE studies; DENTISTRY; BONE fractures; RESEARCH methodology; MEDICAL cooperation; METALS; RESEARCH; TEETH injuries; PILOT projects; EVALUATION research
- Publication
International Journal of Prosthodontics, 2016, Vol 29, Issue 4, p369
- ISSN
0893-2174
- Publication type
journal article
- DOI
10.11607/ijp.4602