Clinical assessment of high-strength all-ceramic crowns
Clinical assessment of high-strength all-ceramic crowns
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DOI：
10.1016/s0022-3913(00)70033-3
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发表时间：
2000-04-01
影响因子：
4.6
通讯作者：
Hillis, SL
中科院分区：
文献类型：
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作者：
Haselton, DR;Diaz-Arnold, AM;Hillis, SL
问题声明，全瓷冠正在广泛使用。目的：评价In-Ceram（Vita Zahnfabrik）全冠材料和方法的临床性能。从1994年到1997年，对爱荷华州大学牙科学院制造的41名患者（16名男性，25名;平均年龄47.3岁，范围18 - 77岁）进行了检查，共使用SO In-Ceram全瓷冠。牙冠的百分比分布包括：67%的前单牙冠，26%的后单牙冠，6%的前种植体牙冠和1%的后种植体牙冠。本研究记录了牙冠和牙齿之间连接的完整性，与相邻牙齿的颜色匹配，继发性龋齿，牙冠和对侧牙列磨损，以及牙冠中可见的裂纹。阿尔法，布拉沃和查理评级被分配与修改后的USPHS标准。患者还接受了关于口腔卫生和治疗满意度的调查。4年成功率的估计值和相应的置信区间通过拟合a计算。结果：88%的人工冠边缘完整性被评定为Alpha或Bravo。颜色匹配99%的皮毛，不含Bravo或更好。只有1%的冠龋坏，1个冠出现咬合磨损。一个前磨牙冠有一个小的贴面瓷断裂。1例磨牙冠因核折裂而重作。所有患者（100%）对他们的牙冠表示满意。4年成功率（Alpha或Bravo），括号内为95%置信区间，计算如下：百分之八十三点五（65.7%-94.6%）边缘完整性，95.8%（82.9%~ 99.8%），继发龋95.5%（81.6%~ 99.7%），磨损100%（88%~ 100%），裂纹100%（88%~ 100%）。
Statement of problem, All-ceramic crowns are being used extensively. Little data are available on their clinical performance.Purpose, This study evaluated thr: clinical performance of In-Ceram (Vita Zahnfabrik) crowns.Material and methods. Forty-one patients (16 men, 25 nomen; mean age 47.3 years, range 18 to 77 years) were examined with a total of SO In-Ceram all-ceramic crowns fabricated at the University of Iowa College of Dentistry from 1994 to 1997. The percentage distribution for crowns included: 67% anterior single crowns, 26% posterior single crowns, 6% anterior implant crowns, and 1% posterior implant crowns. This study documented the integrity of the junction between crown and tooth, color match to adjacent teeth, secondary dental caries, wear of crown and opposing dentition, and visible cracks in the crown. Alpha, Bravo, and Charlie ratings were assigned with a modified USPHS criteria. The patients were also surveyed with respect to oral hygiene and satisfaction of treatment. Estimations of 4-year success rates and corresponding confidence intervals were calculated by fitting a. constant hazard function model with the SAS procedures GENMOD.Results, Marginal integrity for 88% of artificial crowns was rated,Alpha or Bravo. Shade match fur 99% nas Bravo or better. Only 1% of the crowns were carious, and 1 crown exhibited occlusal wear. One premolar crown had a small fracture of veneering porcelain. One molar crown was remade after core fracture. All patients (100%) expressed satisfaction with their crowns. The estimated 4-year success rates (Alpha or Bravo), with 95% confidence intervals in parentheses were calculated as: 83.5% (65.7%-94.6%) for marginal integrity, 95.8% (82.9%-99.8%) fur shade match, and 95.5% (81.6%-99.7%) for secondary caries, 100% (88%-100%) for wear and 100% (88%-100%) for cracks.