Fracture Resistance of Monolithic Zirconia Crowns in Implant Prostheses in Patients with Bruxism
被引:9
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作者:
Lan, Ting-Hsun
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Kaohsiung Med Univ Hosp, Dept Dent, Div Prosthodont, Kaohsiung 80708, Taiwan
Kaohsiung Med Univ, Coll Dent Med, Sch Dent, Kaohsiung 80708, TaiwanKaohsiung Med Univ Hosp, Dept Dent, Div Prosthodont, Kaohsiung 80708, Taiwan
Lan, Ting-Hsun
[1
,2
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Pan, Chin-Yun
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Kaohsiung Med Univ, Kaohsiung Med Univ Hosp, Dept Dent, Div Orthodont, Kaohsiung 80708, TaiwanKaohsiung Med Univ Hosp, Dept Dent, Div Prosthodont, Kaohsiung 80708, Taiwan
Pan, Chin-Yun
[3
]
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机构:
Liu, Pao-Hsin
[4
]
Chou, Mitch M. C.
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机构:
Natl Sun Yat Sen Univ, Dept Mat & Optoelect Sci, Kaohsiung 80424, TaiwanKaohsiung Med Univ Hosp, Dept Dent, Div Prosthodont, Kaohsiung 80708, Taiwan
Chou, Mitch M. C.
[5
]
机构:
[1] Kaohsiung Med Univ Hosp, Dept Dent, Div Prosthodont, Kaohsiung 80708, Taiwan
The aim of this study is to determine the minimum required thickness of a monolithic zirconia crown in the mandibular posterior area for patients with bruxism. Forty-nine full zirconia crowns, with seven different occlusal thicknesses of 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0 mm, were made by using a computer-aided design/computer-aided manufacturing system (CAD/CAM). Seven crowns in each group were subjected to cyclic loading at 800 N and 5 Hz in a servohydraulic testing machine until fracture or completion of 100,000 cycles. Seven finite element models comprising seven different occlusal thicknesses of 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0 mm were simulated using three different loads of vertical 800 N, oblique 10 degrees 800 N, and vertical 800 N + x N torque (x = 10, 50, and 100). The results of cyclic loading tests showed that the fracture resistance of the crown was positively associated with thickness. Specimen breakage differed significantly according to the different thicknesses of the prostheses (p < 0.01). Lowest von Mises stress values were determined for prostheses with a minimal thickness of 1.0 mm in different loading directions and with different forces. Zirconia specimens of 1.0 mm thickness had the lowest stress values and high fracture resistance and under 800 N of loading.
机构:
Univ Passo Fundo, Grad Program Dent, BR285, BR-99052900 Passo Fundo, RS, BrazilUniv Passo Fundo, Grad Program Dent, BR285, BR-99052900 Passo Fundo, RS, Brazil
Oliveira, Andressa Restani
Ziglioli, Natalia Ulmi
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Univ Passo Fundo, Grad Program Dent, BR285, BR-99052900 Passo Fundo, RS, BrazilUniv Passo Fundo, Grad Program Dent, BR285, BR-99052900 Passo Fundo, RS, Brazil
Ziglioli, Natalia Ulmi
Marocho, Susana M. Salazar
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Univ Mississippi, Dept Biomed Mat Sci, 2500 N State St, Jackson, MS 39216 USAUniv Passo Fundo, Grad Program Dent, BR285, BR-99052900 Passo Fundo, RS, Brazil
机构:
Nihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, JapanNihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, Japan
Kobayashi, Tatsuro
Honda, Junichi
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Nihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, JapanNihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, Japan
Honda, Junichi
Kubochi, Kei
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Nihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, JapanNihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, Japan
Kubochi, Kei
Iwasaki, Taro
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Nihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, JapanNihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, Japan
Iwasaki, Taro
Watanabe, Yusuke
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Nihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, JapanNihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, Japan
Watanabe, Yusuke
Komine, Futoshi
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Nihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, JapanNihon Univ, Sch Dent, Dept Fixed Prosthodont, 1-8-13 Kanda Surugadai,Chiyoda Ku, Tokyo 1018310, Japan
机构:
Univ Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, SpainUniv Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, Spain
Lopez-Suarez, Carlos
Rodriguez, Veronica
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Univ Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, SpainUniv Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, Spain
Rodriguez, Veronica
Pelaez, Jesus
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Univ Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, SpainUniv Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, Spain
Pelaez, Jesus
Agustin-Panadero, Ruben
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Univ Valencia, Fac Med & Dent, Dept Stomatol, C Gasco Oliag 1, Valencia 46010, SpainUniv Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, Spain
Agustin-Panadero, Ruben
Suarez, Maria J.
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Univ Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, SpainUniv Complutense, Dept Buccofacial Prostheses, Fac Odontol, Pza Ramon y Cajal S-N, E-28040 Madrid, Spain