Risk indicators for posterior tooth fracture
Risk indicators for posterior tooth fracture
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DOI：
10.14219/jada.archive.2004.0334
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发表时间：
2004-07-01
影响因子：
3.9
通讯作者：
Martin, JA
中科院分区：
文献类型：
--
作者：
Bader, JD;Shugars, DA;Martin, JA
背景。确定后牙是在高风险发展的尖端骨折是一个不精确的科学。没有基于对照观察的风险指标，牙医的评估也各不相同。作者对修复后牙尖骨折进行了病例对照研究。他们对200名骨折患者和252名无骨折患者的39项与骨折相关的潜在风险指标进行了评估。这些危险指标描述了患者的临床特征和行为，以及个体牙齿的临床特征。作者使用逻辑回归建立模型，确定与骨折相关的风险指标，在病例和对照受试者之间以及病例和对照受试者之间。两个模型中都出现了两个风险指标。骨折线的存在和自然牙冠所占体积比例的增加大大增加了骨折的几率(P
Background. Identifying posterior teeth that are at heightened risk of developing cusp fracture is an inexact science. Risk indicators based on controlled observations are not available, and dentists' assessments vary.Methods. The authors conducted a case-control study of cusp fracture in restored posterior teeth. They evaluated 39 potential risk indicators identified in previous uncontrolled studies for an association with fracture in 200 patients with fractures and 252 patients without fractures. These risk indicators delineated patients' clinical characteristics and behaviors, as well as clinical characteristics of individual teeth. The authors used logistic regression to develop models identifying risk indicators associated with fracture, both between case and control subjects and between case and comparison teeth in case subjects.Results. Two risk indicators appeared in both models. The presence of a fracture line and an,increase in the proportion of the volume of the natural tooth crown occupied by the restoration substantially increased the odds of fracture (P