Main Craig, Mirzayan Nina, Shabahang Shahrokh, Torabinejad Mahmoud
University of Nevada, Las Vegas, USA.
J Endod. 2004 Feb;30(2):80-3. doi: 10.1097/00004770-200402000-00004.
Root perforations adversely affect the prognosis of teeth. Inadequacy of the repair materials has been a contributing factor to the poor outcome of repair procedures. Mineral trioxide aggregate (MTA) is a relatively new material that is being successfully used to repair perforations. The purpose of this study was to evaluate the success rate of root perforation repairs using MTA. A list of all of the perforation repairs completed with MTA at an endodontic residency program was obtained. Sixteen cases were included that met the criteria for this study. Pretreatment, immediate posttreatment, and at least 1 year follow-up radiographs were evaluated in a double-blind manner to determine the presence or absence of any pathologic changes adjacent to the perforation site. The results showed that all 16 cases demonstrated normal tissue architecture adjacent to the repair site at the recall visit. Teeth with existing lesions showed resolution of the lesion, and teeth without preoperative lesions continued to demonstrate absence of lesion formation at the follow-up visit. Based on the results of this study, MTA provides an effective seal of root perforations and shows promise in improving the prognosis of perforated teeth that would otherwise be compromised.
根管侧穿对牙齿的预后有不利影响。修复材料的不足一直是导致修复手术效果不佳的一个因素。三氧化矿物凝聚体（MTA）是一种相对较新的材料，正成功用于修复侧穿。本研究的目的是评估使用MTA修复根管侧穿的成功率。获取了一份在牙髓病住院医师培训项目中所有用MTA完成的侧穿修复病例清单。纳入了符合本研究标准的16例病例。以双盲方式评估治疗前、治疗后即刻以及至少1年随访时的X线片，以确定侧穿部位相邻处是否存在任何病理变化。结果显示，在复诊时，所有16例病例在修复部位相邻处均表现出正常的组织结构。有现有病变的牙齿病变得到了缓解，而术前无病变的牙齿在随访时仍未出现病变形成。基于本研究结果，MTA能有效封闭根管侧穿，有望改善那些原本预后不佳的侧穿牙齿的预后。
