Demiriz Levent, Hazar Bodrumlu Ebru, İçen Murat, Durmuşlar Mustafa Cenk
Faculty of Dentistry, Department of Pedodontics, Bülent Ecevit University, Zonguldak, Turkey.
Faculty of Dentistry, Department of Oral and Maxillofacial Radiology, Bülent Ecevit University, Zonguldak, Turkey.
Scanning. 2016 Nov;38(6):579-584. doi: 10.1002/sca.21303. Epub 2016 Jan 19.
Supernumerary teeth may affect the tooth eruption negatively if they occur on the eruption way, and the treatment choice is usually the extraction to prevent the impaction of adjacent permanent teeth. CBCT enables clear and three dimensional images, and it may be helpful to determine the exact location and to measure the dimensions of the supernumerary tooth to avoid any complication during the extraction process. The aim of the present study was to evaluate the accuracy of CBCT on measuring the tooth length and crown width of impacted supernumerary teeth. Twenty-five impacted supernumerary teeth were evaluated using CBCT, and each sample's tooth length and crown width were measured prior to the extraction. After all the extractions were completed, the actual measurements were performed on the same samples. The differences between CBCT and actual measurements were evaluated statistically. Measurements on CBCT images were significantly larger than the actual measurements on tooth length and crown width. For tooth length and crown width, p value was found as 0.045, and <0.001, respectively. The results of the present study should be considered as important by clinicians during the treatment planning to decrease any complication risk under certain conditions such as being so close to an important anatomical structure or the root of an adjacent tooth. SCANNING 38:579-584, 2016. © 2016 Wiley Periodicals, Inc.
额外牙如果出现在萌出路径上，可能会对牙齿萌出产生负面影响，治疗选择通常是拔除，以防止相邻恒牙阻生。锥形束计算机断层扫描（CBCT）能提供清晰的三维图像，有助于确定额外牙的确切位置并测量其尺寸，从而避免拔牙过程中出现任何并发症。本研究的目的是评估CBCT测量阻生额外牙牙长和冠宽的准确性。使用CBCT对25颗阻生额外牙进行评估，并在拔牙前测量每个样本的牙长和冠宽。所有拔牙完成后，对相同样本进行实际测量。对CBCT测量值与实际测量值之间的差异进行统计学评估。CBCT图像上的测量值在牙长和冠宽方面均显著大于实际测量值。牙长和冠宽的p值分别为0.045和<0.001。本研究结果在临床治疗计划中应被视为重要参考，以便在某些情况下（如非常靠近重要解剖结构或相邻牙齿的牙根）降低并发症风险。《扫描》38:579 - 584, 2016。© 2016威利期刊公司。
