口腔医学研究

口腔医学研究 ›› 2016, Vol. 32 ›› Issue (1): 35-38.DOI: 10.11839/kqyxzh.2016.01.009

• 基础研究论著 • 上一篇    下一篇

锥形束CT与根尖片对beagle犬显微根尖手术的预后评估

高静1,申静2*,张海峰2,靳淑凤2   

  1. 1. 南开大学医学院 天津 300071;
    2. 天津市口腔医院 天津 300041
  • 收稿日期:2015-08-10 出版日期:2016-01-28 发布日期:2016-03-21
  • 通讯作者: 申静,Email:shenjing611@163.com
  • 作者简介:高静(1989~),女,河北人,硕士在读,医师,主要从事牙体牙髓病学研究。
  • 基金资助:
    天津市2011年自然科学基金(11JCYBJC11900)

Comparison of Prognosis of Beagle Dogs' Endodontic Microsurgery between Cone Beam CT and Periapical Radiography.

GAO Jing1, SHEN Jing2, ZHANG Hai-feng2, JIN Shu-feng2.   

  1. 1. Medical College of Nankai University, Tianjin 300071, China;
    2. Stomatological Hospital of Tianjin, Tianjin 300041, China
  • Received:2015-08-10 Online:2016-01-28 Published:2016-03-21

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被引次数

2

摘要： 目的:采用根尖片和锥形束CT(cone beam computed tomography, CBCT)对beagle犬实验性根尖周炎显微根尖手术的预后进行评估。方法:将3条beagle犬18颗前磨牙髓腔暴露于口腔环境中8周, 拍摄根尖片及CBCT显示36个牙根均形成实验性根尖周炎。根管治疗后行显微根尖外科手术,术后即刻、6月分别拍摄根尖片和CBCT,根据根尖片和CBCT的根尖透射影像面积,比较二者在识别根尖骨质缺损的差别。结果:显微根尖手术后即刻CBCT矢状面、冠状面根尖透射影像面积均大于根尖片,差别具有统计学意义(P=0.000,P=0.026);CBCT矢状面、冠状面比较两组间差别无统计学意义(P=0.070)。显微根尖手术后6月复查CBCT矢状面、冠状面根尖透射影像面积均大于根尖片,差别具有统计学意义(P=0.000,P=0.012);CBCT矢状面根尖透射影像面积大于冠状面,两组间差别有统计学意义(P=0.001)。结论:CBCT在根尖周骨质缺损的识别优于根尖片,CBCT在根尖手术骨缺损预后评估中是一项有效的评价手段。

关键词: beagle犬, 显微根尖手术, 预后评估, CBCT, 根尖片

Abstract: Objective: To compare the prognosis assessment of endodontic microsurgery treatment for beagle dogs' experimental periodontitis between cone beam CT (CBCT) and periapical radiographs (PRs). Methods: Pulps of 18 premolars in 3 beagle dogs were exposed to oral environment for 8 weeks. All 36 roots of the premolars developed apical periodontitis confirmed by both PRs and CBCT. All teeth received root canal treatment, followed by endodontic microsurgery. PRs and CBCT were performed both immediately and 6 months after endodontic microsurgery. The ability to detect periapical bone defect was compared accroding to apical radiolucent lesion area on the radiographic films of two methods. Results: Immediately after endodontic microsurgery, the areas of apical radiolucent lesions in both CBCT sagittal and coronal plane were greater than those in PRs (P=0.000, P=0.026). There was no significant difference between CBCT sagittal and coronal plane (P=0.070). 6 months after endodontic microsurgery, the area of apical radiolucent lesions in both CBCT sagittal and coronal plane were greater than those in PRs (P=0.000, P=0.012). The area of apical radiolucent lesions in CBCT sagittal plane was significantly greater than that in coronal plane (P=0.001). Conclusion: CBCT is better than PRs in detecting periapical bone defect, and can serve as an effective evaluation method in the evaluation of endodontic microsurgery.

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