根管封闭剂和锥形束CT拍摄参数对牙根纵裂诊断的影响

doi:10.13591/j.cnki.kqyx.2022.06.009

口腔医学 ›› 2022, Vol. 42 ›› Issue (6): 529-533.doi: 10.13591/j.cnki.kqyx.2022.06.009

根管封闭剂和锥形束CT拍摄参数对牙根纵裂诊断的影响

荣迪¹, 巫慧丽¹, 王莹¹, 王晶艳², 张娟², 周广超², 顾培玉², 吴大明^1,2

1 南京医科大学附属口腔医院牙体牙髓病科,江苏省口腔疾病研究重点实验室,江苏省口腔转化医学工程研究中心,江苏南京(210029);
2 南京医科大学附属口腔医院影像科,江苏省口腔疾病研究重点实验室,江苏省口腔转化医学工程研究中心,江苏南京(210029)

修回日期:2022-01-31 出版日期:2022-06-28 发布日期:2022-07-21
通讯作者: 吴大明 E-mail:wudamingdds@163.com;顾培玉 E-mail:82719209@qq.com
基金资助:
江苏省干部保健科研课题(BJ21034)

Influence of root canal sealers and scanning parameters of cone beam computed tomography on diagnosis of vertical root fissure

RONG Di, WU Huili, WANG Ying, WANG Jingyan, ZHANG Juan, ZHOU Guangchao, GU Peiyu, WU Daming

Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University; Jiangsu Province Key Laboratory of Oral Diseases; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing 210029, China

Revised:2022-01-31 Online:2022-06-28 Published:2022-07-21

摘要/Abstract

摘要： 目的研究根管封闭剂和锥形束CT(CBCT)拍摄参数对牙根纵裂(vertical root fractures,VRF)诊断的影响。方法收集人前磨牙40颗,去冠,随机均分为4组:iRoot SP、AH Plus、载银锌介孔钙硅纳米粒子(Ag-Zn-MCSNs)和对照组。根管充填后制备VRF模型,然后将牙根置入人上颌前磨牙牙槽窝内,拍摄CBCT,视野(field of view,FOV)和体素分别为:12 cm×8 cm、0.30 mm;12 cm×8 cm、0.15 mm;8 cm×8 cm、0.15 mm;8 cm×8 cm、0.30 mm。由2名观察者对CBCT图像进行判读。结果各实验组之间的准确性均无统计学差异(P＞0.05)。医师正确诊断根纵裂的部位均是在轴面冠1/3区。结论不同根管封闭剂和CBCT拍摄参数诊断VRF的准确性无显著影响,建议应用CBCT诊断根充牙齿的VRF时,在满足诊断需求的前提下,选择较小FOV及较大的体素,以尽量降低辐射剂量。

关键词: 锥形束CT, 牙根纵裂, 根管封闭剂, 辐射剂量

Abstract: Objective To study the influence of different root canal sealers and scanning parameters on the diagnosis of vertical root fractures (VRF) by cone-beam computed tomography (CBCT). Methods Forty permanent premolars were collected. Teeth were randomly divided into 4 groups according to root canal sealers (iRoot SP, AH Plus, Ag-Zn-MCSNs, and the blank control group). After root canal filling, the VRF model was prepared, and then roots were placed into the alveolar fossa of human maxillary premolars. CBCT was taken 4 times per tooth (FOV 12 cm×8 cm, voxel size 0.30 mm; FOV 12 cm×8 cm, voxel size 0.15 mm; FOV 8 cm×8 cm, voxel size 0.15 mm; FOV 8 cm×8 cm, voxel size 0.30 mm). Two observers evaluated CBCT images. Results There was no significant difference in accuracy among experimental groups (P>0.05). The correct diagnosis of VRF was 1/3 region of axial plane root. Conclusion Different root filling sealers and different scanning parameters have no obvious effect on the performance of CBCT in diagnosing VRF. Using CBCT to diagnose VRF, physicians need to select smaller field of view and larger voxel on the premise of meeting clinical requirements, so as to reduce unnecessary radiation dose in medical imaging examination.

Key words: cone beam computed tomography, vertical root fracture, root canal sealers, radiation dose

中图分类号:

R781.05

荣迪, 巫慧丽, 王莹, 王晶艳, 张娟, 周广超, 顾培玉, 吴大明. 根管封闭剂和锥形束CT拍摄参数对牙根纵裂诊断的影响[J]. 口腔医学, 2022, 42(6): 529-533.

RONG Di, WU Huili, WANG Ying, WANG Jingyan, ZHANG Juan, ZHOU Guangchao, GU Peiyu, WU Daming. Influence of root canal sealers and scanning parameters of cone beam computed tomography on diagnosis of vertical root fissure[J]. Stomatology, 2022, 42(6): 529-533.

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根管封闭剂和锥形束CT拍摄参数对牙根纵裂诊断的影响

Influence of root canal sealers and scanning parameters of cone beam computed tomography on diagnosis of vertical root fissure

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