González-Mancilla Sara, Montero-Miralles Paloma, Saúco-Márquez Juan J, Areal-Quecuty Victoria, Cabanillas-Balsera Daniel, Segura-Egea Juan J
DDS, Department of Stomatology, Section of Endodontics, School of Dentistry, University of Sevilla, C/ Avicena s/n, 41009-Sevilla, Spain.
DDS, MSc, PhD, Professor of Master in Clinical Endodontics, University of Sevilla, C/ Avicena s/n, 41009-Sevilla, Spain.
J Clin Exp Dent. 2022 Nov 1;14(11):e959-e966. doi: 10.4317/jced.59849. eCollection 2022 Nov.
Dens invaginatus is a developmental dental anomaly resulting from an invagination of dental tissues folding from the outer surface towards dental pulp. The aim of this systematic review and meta-analysis was to determine the prevalence of dens invaginatus using cone beam computed tomography (CBCT).
A systematic review was conducted following PRISMA statements. The research question was: What is the prevalence of dens invaginatus in the adult population assessed by CBCT? The MeSH terms were used to search articles published in the electronic database PubMed. Studies were selected considering predetermined eligibility criteria. The Robins-I tool developed by Cochrane was used to assess methodological quality and risk of bias.
Four studies were included in this systematic review, including 2009 CBCT images. The overall prevalence of dens invaginatus was 9.0% (95% CI = 7.2 - 10.8%; < 0.001). Three studies were considered of low risk of bias.
The results of this systematic review and meta-analysis show that prevalence of dens invaginatus using CBCT was higher than previous estimations carried out with conventional radiographs. Therefore, an early identification and a correct management of invaginated teeth is essential for improving the prognosis of these teeth. It can be concluded that teeth with dens invaginatus should always be studied using CBCT. Dens invaginatus, Dens in dente, Dental anomalies, CBCT, Cone beam computed tomography.
牙中牙是一种牙齿发育异常，由牙体组织从外表面向内折叠侵入牙髓所致。本系统评价和荟萃分析的目的是使用锥形束计算机断层扫描（CBCT）确定牙中牙的患病率。
按照PRISMA声明进行系统评价。研究问题为：通过CBCT评估的成年人群中牙中牙的患病率是多少？使用医学主题词（MeSH）在电子数据库PubMed中检索文章。根据预先确定的纳入标准选择研究。使用Cochrane开发的Robins-I工具评估方法学质量和偏倚风险。
本系统评价纳入了四项研究，包括2009张CBCT图像。牙中牙的总体患病率为9.0%（95%CI=7.2-10.8%；P<0.001）。三项研究被认为偏倚风险较低。
本系统评价和荟萃分析的结果表明，使用CBCT得出的牙中牙患病率高于以往使用传统X线片的估计值。因此，早期识别和正确处理内陷牙对于改善这些牙齿的预后至关重要。可以得出结论，对于牙中牙的牙齿应始终使用CBCT进行研究。牙中牙、牙内陷、牙齿异常、CBCT、锥形束计算机断层扫描
