Anatomical relationship between roots of maxillary posterior teeth and maxillary sinus using cone-beam computed tomography
Anatomical relationship between roots of maxillary posterior teeth and maxillary sinus using cone-beam computed tomography
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锥形束计算机断层扫描上颌后牙根部与上颌窦的解剖关系
DOI：
10.4103/endo.endo_25_20
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Uday Kumar
中科院分区：
文献类型：
--
作者：
M. Kaushik;Pratyasha Kaushik;N. Mehra;Roshni Sharma;E. Soujanya;Uday Kumar
目的：牙源性上颌窦炎约占上颌窦炎病例的10%-12%。本研究的主要目的是使用锥形束计算机断层扫描分析印度人群中上颌后根与相邻上颌窦底（MSF）之间的垂直关系。次要目的是将数据与年龄和性别相关联。材料与方法：测量452颗上颌后牙到MSF邻缘的最短距离。将数据分为三组。IS组为上颌后牙根突入上颌窦内组，CO组为根尖接触上颌窦外间隙组，OS组为根尖不接触上颌窦外间隙组。所获得的数据与年龄和性别相关。结果如下：第二前磨牙根尖距MSF的垂直距离小于第一前磨牙根尖距MSF的垂直距离（P < 0.05）。第一磨牙颊根、腭根距MSF的垂直距离差异有显著性（P < 0.05）。后牙根多位于MSF边缘以下（OS型）。上颌第一磨牙的阻生体以IS型最多见（29.12%）。IS型的频率随年龄的增长而下降。男性后根尖与MSF相邻边缘之间的距离大于女性。结论：上颌第一磨牙的PR最接近MSF。垂直关系的变化，发现年龄和性别。
Aim: Maxillary sinusitis of odontogenic origin accounts for approximately 10%–12% of maxillary sinusitis cases. The primary objective of the present study was to analyze the vertical relationship between the maxillary posterior roots and the adjacent maxillary sinus floor (MSF) in the Indian population using cone-beam computed tomography. The secondary objective was to correlate the data with age and gender. Materials and Methods: The shortest distance between 452 maxillary posterior teeth and the adjacent border of MSF was measured. The data were divided into three groups. Group IS included maxillary posterior teeth roots protruding into the sinus, Group CO included root apices contacting the MSF, and Group OS included root apices not contacting the MSF. The data obtained were correlated with age and gender. Results: The vertical distance of the root apices of second premolars from the MSF was significantly lesser compared to the root apices of first premolars (P < 0.05). The difference between the vertical distance of buccal roots and palatal roots (PRs) of first molar from the MSF was significantly more (P < 0.05). Majority of the roots of posterior teeth were located below the MSF border (Type OS). Type IS was most frequently seen for PRs of maxillary first molars (29.12%). The frequency of Type IS decreased with increasing age. The distance between the posterior root apices and the adjacent border of the MSF was found to be more in males compared to females. Conclusion: The PRs of maxillary first molars were found to be closest to the MSF. Variation in the vertical relationship was found by age and gender.