RETROSPECTIVE ANALYSIS OF PORCELAIN FAILURES OF METAL CERAMIC CROWNS AND FIXED PARTIAL DENTURES SUPPORTED BY 729 IMPLANTS IN 152 PATIENTS: PATIENT-SPECIFIC AND IMPLANT-SPECIFIC PREDICTORS OF CERAMIC FAILURE
RETROSPECTIVE ANALYSIS OF PORCELAIN FAILURES OF METAL CERAMIC CROWNS AND FIXED PARTIAL DENTURES SUPPORTED BY 729 IMPLANTS IN 152 PATIENTS: PATIENT-SPECIFIC AND IMPLANT-SPECIFIC PREDICTORS OF CERAMIC FAILURE
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DOI：
10.1016/s0022-3913(09)60083-4
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发表时间：
2009-06-01
影响因子：
4.6
通讯作者：
Lin, Dongming
中科院分区：
文献类型：
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作者：
Kinsel, Richard P.;Lin, Dongming
问题陈述。根据文献，与种植体支持的金属烤瓷冠或固定部分义齿相关的瓷折的发生率高于牙齿支持的修复。种植体特定的和患者特定的陶瓷失败的原因尚未得到充分的评估。这项回顾性研究的目的是评估种植体支持的金属烤瓷修复体瓷折的潜在统计预测因素。在6个月的时间里，在定期召回预约期间，对一系列先前接受种植支持的金属陶瓷固定修复体的患者进行了检查。记录每个患者的支撑性种植体数量、牙体单元数量、修复类型、义齿插入日期、牙弓位置、相对牙列、咬合类型、是否有功能辅助习惯、咬合保护装置的使用、有无陶瓷骨折、性别和年龄。使用广义估计方程(GEE)方法对分类结果(有无陶瓷断裂)进行受试者内相关测量分析，以确定哪些患者和种植体特定的因素可以预测瓷裂(α=0.05)。收集了152名患者的数据，共998个牙科单位(390个单冠和94个固定部分义齿)，由729个种植体支撑。35例患者94个牙体单位发生瓷折。骨折发生率差异有统计学意义(P
Statement of problem. Porcelain fracture associated with an implant-supported, metal ceramic crown or fixed partial denture occurs at a higher rate than in tooth-supported restorations, according to the literature. Implant-specific and patient-specific causes of ceramic failure have not been fully evaluated.Purpose. The purpose of this retrospective study was to evaluate the potential statistical predictors for porcelain fracture of implant-supported, metal ceramic restorations.Material and methods. Over a 6-month period, a consecutive series of patients having previously received implant-supported, metal ceramic fixed restorations were examined during periodic recall appointments. The number of supporting implants, number of dental units, type of restoration, date of prosthesis insertion, location in the dental arch, opposing dentition, type of occlusion, presence of parafunctional habits, use of an occlusal protective device, presence or absence of ceramic fractures, gender, and age were recorded for each patient. The generalized estimating equation (GEE) approach was used for the intrasubject correlated measurements analysis of categorical outcomes (presence or absence of ceramic fractures) to determine which patient- and implant-specific factors would predict porcelain fracture (alpha=.05).Results. Data were collected from 152 patients representing 998 dental units (390 single crowns and 94 fixed partial dentures) supported by 729 implants. Porcelain fractures of 94 dental units occurred in 35 patients. The fractures were significantly (P