Survival rate and fracture strength of incisors restored with different post and core systems after exposure in the artificial mouth.
Survival rate and fracture strength of incisors restored with different post and core systems after exposure in the artificial mouth.
复制标题
使用不同桩核系统在人工口腔中暴露后恢复的门牙的存活率和断裂强度。
DOI：
10.1046/j.1365-2842.2001.00720.x
复制
发表时间：
2001
影响因子：
2.9
通讯作者：
S. Koutayas
中科院分区：
文献类型：
--
作者：
J. Strub;O. Pontius;S. Koutayas
使用四种不同的覆盖有全陶瓷内冠的桩核系统的 40 颗断头牙髓治疗的上颌中切牙在暴露于人工口后的存活率和抗折性进行了评估。研究了以下桩核系统的十个样品：高贵金属桩 (Permador) 和核心 (Olympia) (A)、带有预制粘合陶瓷芯 (Ceracap) 的氧化锆桩 (Cerapost) (B)、带有预制粘合陶瓷芯 (Ceracap(R)) 的树脂陶瓷桩（实验）(C) 以及带有定制陶瓷芯 (Cosmo) 的氧化锆桩 (Cerapost)锭）（D）。全瓷内冠 (Procera) 使用 Panavia TC 进行粘合。人工嘴120万次循环后的存活率如下：90%（A）、80%（B）、60%（C）和100%（D）。静态加载期间断裂抗力的平均值和标准偏差 (s.d.) 结果为：1270 +/- 312.5 (A)、1494.5 +/- 333.5 (B)、1146.7 +/- 182.6 (C) 和 463.3 +/- 46.2 (D)。除 A 和 B、A 和 C（Wilcoxon 检验）外，所有组之间均存在统计学显着差异。带有定制陶瓷芯且覆盖有全陶瓷内冠的氧化锆柱在人工口腔动态加载过程中没有发生断裂。静态加载时的平均断裂强度不如A、B、C组，但高于临床必要水平。
The survival rate and fracture resistance of 40 decapitated endodontically treated maxillary central incisors using four different post and core systems covered with all-ceramic copings was evaluated after exposure in the artificial mouth. Ten samples of the following post and core systems were investigated: high precious metal post (Permador) and core (Olympia) (A), zirconia post (Cerapost) with a pre-fabricated bonded ceramic core (Ceracap) (B), resin-ceramic post (experimental) with a pre-fabricated bonded ceramic core (Ceracap(R)) (C) and a zirconia post (Cerapost) with a custom made ceramic core (Cosmo Ingots) (D). The all-ceramic copings (Procera) were cemented using Panavia TC. The survival rates after 1 200 000 cycles in the artificial mouth are as follows: 90% (A), 80% (B), 60% (C) and 100% (D). The results of the means and standard deviations (s.d.) of the fracture resistance during static loading are: 1270 +/- 312.5 (A), 1494.5 +/- 333.5 (B), 1146.7 +/- 182.6 (C) and 463.3 +/- 46.2 (D). There are statistically significant differences between all groups with the exception of A and B, and A and C (Wilcoxon test). None of the zirconia posts with custom made ceramic cores covered with all-ceramic copings fractured during dynamic loading in the artificial mouth. The mean fracture strength during static loading was less favourable than that of groups A, B and C but above the clinical necessary level.