Cone beam computed tomography in mandibular molars referred for apical surgery.

Schweizer Monatsschrift fur Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia Pub Date : 2012-01-01

Roland Lauber, Michael M Bornstein, Thomas von Arx

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Abstract

Introduction: The purpose of the present study was to compare conventional intraoral periapical radiographs (PA) with limited cone beam computed tomography (CBCT) for evaluation of mandibular molars prior to apical surgery. The apical extent and homogeneity of the root canal fillings (RCF) as well as the number of root canals were examined.

Methods: 38 molars with 75 roots were included in the study. The apical extent and homogeneity of the RCFs as well as the presence of root canal posts or screws were examined on sagittal CBCT slices and on the PAs. The number of root canals was determined on sagittal CBCT slices and the PAs. The mesial and the distal roots were examined separately.

Results: Considerably more root canals were found on the CBCT slices compared to the PAs. The homogeneity and the extent of the RCFs as well as the presence of root canal posts or screws seem subjectively easier to determine on the PAs.

Conclusion: In mandibular molars, because of the better discrimination of root canal anatomy we recommend a CBCT scan prior to apical surgery.

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锥形束计算机断层扫描在下颌磨牙根尖手术中的应用。

简介:本研究的目的是比较传统的口腔内根尖周x线片(PA)和有限锥束计算机断层扫描(CBCT)在根尖手术前对下颌磨牙的评估。检查根管充填物(RCF)的根尖程度和均匀性以及根管数量。方法:38磨牙，75根。在矢状面CBCT切片和PAs上检查rcf的根尖范围和均匀性以及根管桩或螺钉的存在。在矢状面CBCT切片和PAs上确定根管数量。分别检查近根和远根。结果:与PAs相比，CBCT片上发现了更多的根管。在PAs上，rcf的同质性和范围以及根管桩或螺钉的存在在主观上似乎更容易确定。结论:对于下颌磨牙，由于根管解剖结构的更好区分，我们建议在根尖手术前进行CBCT扫描。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Schweizer Monatsschrift fur Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia

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