文献阅读：Review Article Influence of test parameters on in vitro fracture resistance of post-endodontic restorations: a structured review

该综述目的是阐明实验参数对桩核修复体体外实验研究的影响，文献来自对Medline、Eembase 、MedPilot的 电子检索和额外的手工检索。两个独立的研究者根据订好的纳入排除标准对文献进行评估。搜索结果有125篇，69篇纳入研究。57％的研究针对上颌切牙。研究主要包括牙、桩、核和冠，桩核修复后没有冠的情况最常见。59％的研究采取静态加载。只有15％采用冷热循环和力学加载，而循环的周期数量有很大差异。循环加载后进行静态加载的十字头速度也有很大差异，从0.01到150mm／min。综述的文章在实验参数方面有很大差异，建议对牙髓治疗后的体外研究在方法学方面进行标准化。

Review Article

Influence of test parameters on in vitro fracture resistance of post-endodontic restorations: a structured review

M. NAUMANN*^,†,1, G. METZDORF ^‡,1 , W. FOKKINGA ^§ , R. WATZKE ^¶ , G. STERZENBACH ^‡ , S. BAYNE** & M. ROSENTRITT ^††
Summary A structured literature review aimed to elucidate test parameters for in vitro testing of post-endodontic restorations. The literature was digitally searched using MEDLINE, EMBASE, MedPilot and an additional hand search was performed. Two independent researchers assessed the articles in relation to the defined inclusion and exclusion criteria. The literature search revealed 125 abstracts. Sixty-nine studies were included. Fifty-seven per cent of the studies investigated maxillary incisors only. The restorative stage as complex of tooth, post, core, and crown and post-and-core restored specimens without crowns were used most frequently. Fifty-nine per cent of the studies used static loading. Only 15% of the studies performed thermocycling and mechanical loading (TCML). However, the number of thermo- and load cycles varied. The cross-head speed of linear loading after TCML ranged from 0·01 to 150 mm min⁻¹. The reviewed studies were heterogeneous in test design regarding the used test parameters. A methodological standardization of in vitro testing of post-endodontic restorations is recommended.