口腔医学研究

口腔医学研究 ›› 2022, Vol. 38 ›› Issue (8): 784-788.DOI: 10.13701/j.cnki.kqyxyj.2022.08.017

• 口腔颌面影像学研究 • 上一篇    下一篇

上颌第一磨牙位点在CBCT中的解剖学表现

王晓东1*, 孟令娇2, 赵兵3, 陈志方1   

  1. 1.安徽医科大学合肥口腔临床学院,合肥市口腔医院西区口腔颌面外科 安徽 合肥 230000;
    2.安徽医科大学合肥口腔临床学院,合肥市口腔医院西区牙体牙髓科 安徽 合肥 230000;
    3.安徽医科大学合肥口腔临床学院,合肥市口腔医院西区放射科 安徽 合肥 230000
  • 收稿日期:2022-01-11 出版日期:2022-08-28 发布日期:2022-08-24
  • 通讯作者: *王晓东,E-mail:landuoduo99@163.com
  • 作者简介:王晓东(1985~ ),男,黑龙江绥棱人,硕士,主治医师,研究方向:智齿微创拔除及舒适化拔除、牙种植。

Anatomical Presentation of Maxillary First Molar Site in Cone-beam CT

WANG Xiaodong1*, MENG Lingjiao2, ZHAO Bing3, CHEN Zhifang1   

  1. 1. Department of Oral and Maxillofacial Surgery, West Hefei Stomatological Hospital, Clinical School of Anhui Medical University, Hefei 230000, China;
    2. Department of Endodontics, West Hefei Stomatological Hospital, Clinical School of Anhui Medical University, Hefei 230000, China;
    3. Department of Radiology, West Hefei Stomatological Hospital, Clinical School of Anhui Medical University, Hefei 230000, China
  • Received:2022-01-11 Online:2022-08-28 Published:2022-08-24

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摘要： 目的: 通过CBCT分析上颌第一磨牙(M1)位点的相关骨解剖特点。方法: 回顾分析548例上颌窦CBCT影像资料。对上颌窦外侧壁厚度(LWT)、上颌窦宽度(SW)、角度A、鼻腭凹角(PNR)、鼻腭凹角至牙槽嵴顶平面的垂直距离(DPA)等参数进行统计分析。窦底垂直向上5 mm、10 mm处对应的LWT、SW分别记作LWT-5、LWT-10、SW-5、SW-10。结果: LWT-5、LWT-10分别为(1.99±1.07) mm、(2.32±1.60) mm。SW-5、SW-10分别为(14.56±2.83) mm、(19.81±3.91) mm。角度A<30°、30°~60°、>60°者分别为0.18%、13.14%、86.68%。PNR＜90°、≥90°者分别为9.85%、90.15%。DPA＜15 mm且PNR＜90°者占5.66%。男性LWT-5、SW-5、SW-10大于女性(P＜0. 05)。正常组LWT-5、SW-5、DPA大于缺牙组(P＜0. 05)。各年龄组间SW-5差异显著(P＜0. 05)。外侧璧骨性血管检出者LWT-5、LWT-10大于未检出者(P＜0. 001),外侧璧骨性血管检出者SW-10小于未检出者(P＜0. 001) 。结论: LWT、SW、角度A、PNR及DPA可能对实施上颌窦底提升术提出挑战,应仔细评估这些解剖结构。

关键词: CBCT, 上颌窦外侧壁, 骨厚度, 上颌窦宽度, 角度A, 鼻腭凹角

Abstract: Objective: To analyze the bone anatomy of maxillary first molar (M1) by CBCT. Methods: The current retrospective study included 548 maxillary sinus CBCT images. Parameters such as maxillary sinus lateral wall thickness (LWT) and maxillary sinus width (SW) at 5 mm (LWT-5, SW-5) and 10 mm (LWT-10, SW-10) height levels from the sinus floor, angle A, palatal–nasal recess angle (PNR), and distance from the palatal-nasal recess to the alveolar crest (DPA) were subjected to statistical analysis. Results: Mean LWT-5 and LWT-10 were (1.99±1.07) mm and (2.32±1.60) mm. Mean SW-5 and SW-10 were (14.56±2.83) mm and (19.81±3.91) mm. In angle A, the group of less than 30° was 0.18％, 30°-60° was 13.14％, and greater than 60° was 86.68％. In PNR, the group of less than 90° was 9.85%, and greater than or equal to 90° was 90.15%. At M1 sites, 5.66% of the recesses were less than 90° and within 15 mm from the alveolar crest. The LWT-5, SW-5, and SW-10 in the male group were significantly greater than those in the female group (P＜0.05). There was statistically significant difference on the LWT-5, SW-5, and DPA with respect to presence or absence of tooth (P＜0.05). There was a significant association between SW-5 and age (P＜0.05). There was statistically significant difference on the LWT-5, LWT-10, and SW-10 with respect to presence or absence of the alveolar antral artery canal (P＜0.001). Conclusion: The LWT, SW, angle A, PNR, and DPA might present a challenge for performing sinus augmentation. These anatomic structures should be carefully evaluated.

Key words: CBCT, maxillary sinus lateral wall, bone thickness, maxillary sinus width, angle A, palatal-nasal recess