Variability of clinical dentin substrates.
Variability of clinical dentin substrates.
复制标题
临床牙本质基质的变异性。
DOI：
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发表时间：
1991
影响因子：
1.4
通讯作者：
J. Lindemuth
中科院分区：
文献类型：
--
作者：
Duke Es;J. Lindemuth
临床试验仍然是牙本质粘合性能的唯一结论性研究，但口腔环境特有的变量可能会影响结果。牙本质变异性是可能导致临床评估极端变化的因素之一。尽管实验室研究取得了令人鼓舞的结果，但粘合剂系统的临床试验却令人失望。据报道，目前的粘合剂通过化学和/或微机械机制与牙本质表面发生反应。牙本质表面，例如宫颈擦伤，会发生口腔内变化，并且牙本质小管通常会因管周牙本质的生长或管内钙化沉积物的沉淀而被堵塞。所得的硬化牙本质可能不太容易接受现有的牙本质粘合剂。对临床老化牙本质表面的检查揭示了管状形态的过度变异。牙本质硬化越多，牙本质调理和树脂复合材料适应的效果就越差。与当前临床试验的早期相关性似乎证实，最大的修复失败发生在硬化病变中。
Clinical trials remain the only conclusive research of dentin adhesive performance, but variables unique to the oral environment may influence the results. Dentin variability is one factor that may account for extreme variations in clinical evaluations. Despite the encouraging results of laboratory studies, clinical trials with adhesive systems have been disappointing. Current adhesives are reported to react with dentin surfaces by chemical and/or micro-mechanical mechanisms. Dentin surfaces, such as cervical abrasions, are subject to intraoral changes and dentin tubules commonly become obturated by the growth of peritubular dentin or by the precipitation of calcific deposits within the tubules. The resulting sclerotic dentin may be less receptive to current dentin adhesives. An examination of clinically aged dentin surfaces has revealed an inordinate variability in tubular morphology. The more sclerotic dentin present, the less effective was dentin conditioning and resin composite adaptation. Early correlations with current clinical trials appear to substantiate that the greatest failure of restorations occurred in sclerotic lesions.