口腔医学研究

口腔医学研究 ›› 2021, Vol. 37 ›› Issue (12): 1094-1098.DOI: 10.13701/j.cnki.kqyxyj.2021.12.008

• 口腔修复学研究 • 上一篇    下一篇

四种口腔修复材料在锥形束CT与螺旋CT口腔全冠图像中的伪影对比研究

黄文博, 杜申钊*, 曾静, 谷耀东   

  1. 河南省南阳市中心医院口腔科 河南 南阳 473000
  • 收稿日期:2021-05-10 发布日期:2021-12-17
  • 通讯作者: *杜申钊,E-mail:dnmnbcqjy076@163.com
  • 作者简介:黄文博(1985~ ),男,河南南阳人,本科,主治医师,主要从事口腔种植医学研究。
  • 基金资助:
    河南省医学科技攻关项目(编号:182103210444)

Comparative Study on Images of Full Crown with Four Kinds of Restoration Materials by CBCT and MSCT

HUANG Wenbo, DU Shenzhao*, ZENG Jing, GU Yaodong   

  1. Department of Stomatology, Nanyang Central Hospital, Nanyang, 473000, China
  • Received:2021-05-10 Published:2021-12-17

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摘要： 目的:探讨不同口腔修复材料在锥形束CT(cone beam computed tomography,CBCT)与多层螺旋CT(Multi-slice CT,MSCT)口腔全冠图像中的伪影特征,以及两种检查技术的辐射剂量差异,旨在为临床不同修复材料口腔影像检查技术的合理选择提供借鉴。方法:选取2018年1月~2020年10月在我院采用不同口腔修复材料行牙全冠修复的148例患者为研究对象,根据修复材料不同将其分为银钯合金组(38例,75颗)、钴铬合金组(36例,73颗)、镍铬合金组(34 例,77颗)和纯钛组(40例,79颗),均接受CBCT和MSCT检查,分析4种口腔修复材料在两种检查影像中的伪影指数、伪影面积、伪影形态等特征,比较两种检查过程中有效辐射剂量(exposure dose,ED)。结果:4种口腔修复材料在CBCT口腔全冠影像中伪影指数、颊舌向、远近中向伪影直径、条索状、实心伪影面积均小于MSCT影像中,差异有统计学意义(P＜0.05);4种口腔修复材料随其密度增加,在CBCT影像与MSCT影像中,其伪影指数、颊舌向、远近中向伪影直径、条索状、实心伪影面积也均随之增大,差异有统计学意义(P＜0.05);4种口腔修复材料在CBCT口腔检查过程中ED显低于MSCT检查过程中,差异有统计学意义(P＜0.05)。结论:不同口腔修复材料在CBCT牙全冠图像中伪影更小,影像质量明显优于MSCT,且辐射剂量低于MSCT;低密度口腔修复材料在口腔检查时影像中伪影最小,影像质量更高。

关键词: 锥形束CT, 多层螺旋CT, 牙修复, 牙科材料, 影像质量, 辐射剂量

Abstract: Objective: To explore the artifact characteristics of images of full crown made with different restoration materials by cone beam computed tomography (CBCT) and multi-slice CT (MSCT), and to explore the difference of radiation dose between two techniques. Methods: A total of 148 patients who used different restoration materials for full crown in our hospital from January 2018 to October 2020 were selected. They were divided into a silver-palladium alloy group (38 cases, 75 teeth), cobalt-chromium alloy group (36 cases, 73 tablets), nickel-chromium alloy group (34 cases, 77 tablets), and pure titanium group (40 cases, 79 tablets), all of whom received CBCT and MSCT examinations. The artifact index, area of artifact, shape of artifact, and other features were compared, and the effective radiation dose (ED) during the inspection processes was also inspected. Results: The artifact index, buccal-lingual direction, far-near-medium artifact diameter, strip shape, and solid artifact area of four restoration materials with CBCT were smaller than those with MSCT (P<0.05). The images were increased with the increasing of material density (P<0.05). The ED of four restoration materials during CBCT examination was significantly lower than that during MSCT examination (P＜0.05). Conclusion: Concerning to the full crown images, CBCT is better than MSCT, and low-density restoration materials is better.

Key words: cone beam computed tomography, multi-slice CT, dental restoration, dental materials, image quality, radiation dose