上颌第二磨牙牙根与上颌窦底关系的CBCT研究

doi:10.13701/j.cnki.kqyxyj.2026.10.007

口腔医学研究 ›› 2026, Vol. 42 ›› Issue (10): 867-871.DOI: 10.13701/j.cnki.kqyxyj.2026.10.007

上颌第二磨牙牙根与上颌窦底关系的CBCT研究

宋新宇¹, 崔博², 王秀慧², 吴晓雨¹, 孟心语¹, 刘汝兵¹, 崔彩云^1*

1.山东医药大学附属医院牙体牙髓科山东滨州 256603;
2.山东医药大学附属医院口腔影像科山东滨州 256603

收稿日期:2025-12-03 发布日期:2026-10-23
通讯作者: * 崔彩云,E-mai:cuicaiyun1987@163.com
作者简介:宋新宇(1999~ ),男,山东东营人,硕士在读,住院医师,研究方向:牙体牙髓病学。
基金资助:
山东省自然科学基金(编号:ZR2019PH083)

CBCT Study on Relationship between Roots of Maxillary Second Molars and Maxillary Sinus Floor

SONG Xinyu¹, CUI Bo², WANG Xiuhui², WU Xiaoyu¹, MENG Xinyu¹, LIU Rubing¹, CUI Caiyun^1*

1. Department of Cariology and Endodontics, Shandong Medical and Pharmaceutical University Hospital, Binzhou 256603, China;
2. Department of Oral Imaging, Shandong Medical and Pharmaceutical University Hospital, Binzhou 256603, China

Received:2025-12-03 Published:2026-10-23

摘要/Abstract

摘要： 目的: 分析锥形束计算机断层扫描(cone-beam computed tomography,CBCT)中上颌第二磨牙(maxillary second molar,MSM)与上颌窦底的关系,为MSM的根管治疗提供解剖学依据。方法: 回顾性分析330例患者(660颗MSM)的CBCT影像资料,筛选出427颗三根型MSM,分别于矢状面和冠状面测量近中颊根、远中颊根和腭根与上颌窦底的垂直距离;采用Friedman检验和Wilcoxon符号秩检验进行统计分析。结果: 三根型MSM中,在冠状面和矢状面上三根与上颌窦底垂直距离存在统计学差异(P＜0.05),近中颊根＜远中颊根＜腭根(P＜0.05)。结论: 在三根型MSM与上颌窦底距离关系中,近中颊根与上颌窦底之间距离最近,腭根与上颌窦底之间的距离最远,为MSM根管治疗和显微根尖手术提供解剖依据。

关键词: 上颌第二磨牙, 上颌窦, 锥形束计算机断层扫描

Abstract: Objective: To analyze the relationship between the roots of the maxillary second molar (MSM) and the maxillary sinus floor using cone-beam computed tomography (CBCT). Methods: CBCT images of 660 MSMs from 330 patients were retrospectively analyzed. A total of 427 three-rooted MSMs were identified. The vertical distances from the mesio-buccal root, disto-buccal root, and palatal root to the maxillary sinus floor were measured in the sagittal and coronal planes. The Friedman test and the Wilcoxon signed-rank test were employed for statistical analysis. Results: For the three-rooted MSMs, the distances from the three roots to the maxillary sinus floor showed statistically significant differences in both the coronal and sagittal planes (P＜0.05). Pairwise comparisons consistently revealed the order: mesio-buccal root < disto-buccal root < palatal root (P＜0.05). Conclusion: In the spatial relationship between three-rooted MSMs and the maxillary sinus floor, the mesio-buccal root is the closest to the maxillary sinus floor, while the palatal root is the farthest. The results would provide anatomical reference for root canal therapy and microscopic apical surgery of MSM.

Key words: maxillary second molar, maxillary sinus, cone-beam computed tomography

宋新宇, 崔博, 王秀慧, 吴晓雨, 孟心语, 刘汝兵, 崔彩云. 上颌第二磨牙牙根与上颌窦底关系的CBCT研究[J]. 口腔医学研究, 2026, 42(10): 867-871.

SONG Xinyu, CUI Bo, WANG Xiuhui, WU Xiaoyu, MENG Xinyu, LIU Rubing, CUI Caiyun. CBCT Study on Relationship between Roots of Maxillary Second Molars and Maxillary Sinus Floor[J]. Journal of Oral Science Research, 2026, 42(10): 867-871.

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上颌第二磨牙牙根与上颌窦底关系的CBCT研究

CBCT Study on Relationship between Roots of Maxillary Second Molars and Maxillary Sinus Floor

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