de Sousa Amanda Pinto Bandeira Rodrigues, França Kamilla, de Lucas Rezende Liliana Vicente Melo, do Nascimento Poubel Déborah Lousan, Almeida Julio César Franco, de Toledo Isabela Porto, Garcia Fernanda Cristina Pimentel
Department of Dentistry, School of Health Sciences, University of Brasília, Brasília, Brazil.
Histopathology Laboratory, School of Health Sciences, University of Brasília, Brasília, Brazil.
Dent Traumatol. 2018 Oct;34(5):297-310. doi: 10.1111/edt.12414.
BACKGROUND/AIMS: Fragment reattachment is a procedure that offers advantages, such as preservation of tooth structure and maintenance of color, shape, and translucency of the original tooth. The aim of this study was to analyze the reattachment techniques used to restore anterior teeth fractured by trauma.
The PubMed, LILACS, Web of Science, Cochrane, and Scopus databases were searched in October 2016, and the search was updated in February 2017. A search of the gray literature was performed in Google Scholar and OpenGrey. Reference lists of eligible studies were evaluated to identify additional studies. Two authors assessed studies for inclusion and extracted the data. In vitro studies that evaluated permanent human teeth fractured by trauma were included.
Twenty-one studies remained after screening. The bond strength between the fragment and the crown was evaluated in 119 experimental groups. Ten different techniques were evaluated as follows: no preparation, chamfer, bevel, anchors, overcontour, internal groove, no preparation associated with chamfer after reattachment, fragment dentin removal associated with chamfer after reattachment, bevel associated with overcontour, and groove associated with shoulder. Five different materials were used to reattach the fragment: bonding system, luting composite resin, flowable composite, microhybrid composite, and nanocomposite.
Fragment reattachment using a technique with no preparation and an adhesive system associated with an intermediate composite with good mechanical properties can restore part of the resistance of the fractured tooth.
背景/目的：碎片重新附着是一种具有诸多优势的操作，比如保留牙齿结构以及维持原牙的颜色、形状和透明度。本研究的目的是分析用于修复因外伤折断的前牙的重新附着技术。
于2016年10月检索了PubMed、LILACS、科学网、Cochrane和Scopus数据库，并于2017年2月更新了检索。在谷歌学术和OpenGrey中对灰色文献进行了检索。对符合条件的研究的参考文献列表进行评估以识别其他研究。两位作者评估研究是否纳入并提取数据。纳入了评估因外伤折断的恒牙的体外研究。
筛选后剩余21项研究。在119个实验组中评估了碎片与牙冠之间的粘结强度。评估了十种不同技术，如下所示：不预备、切角、斜面、固位体、过度塑形、内部沟、重新附着后不预备联合切角、重新附着后去除碎片牙本质联合切角、斜面联合过度塑形以及沟联合肩台。使用了五种不同材料来重新附着碎片：粘结系统、粘结复合树脂、流动复合树脂、微混合复合树脂和纳米复合树脂。
使用不预备技术以及与具有良好机械性能的中间复合树脂相关联的粘结系统进行碎片重新附着，可以恢复折断牙齿的部分抗力。
