改良冠向推进隧道技术联合去上皮游离龈瓣移植术增加颊侧组织的三维定量测量：一项前瞻性病例系列研究。
Three-dimensional quantitative measurement of buccal augmented tissue with modified coronally advanced tunnel technique and de-epithelialized gingival graft: a prospective case series.
机构信息
Department of First Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China.
Central Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China.
出版信息
BMC Oral Health. 2021 Mar 25;21(1):157. doi: 10.1186/s12903-021-01522-2.
BACKGROUND
The aim of this study is to investigate three-dimensional quantitative analysis of buccal augmented tissue alterations after surgery using a modified coronally advanced tunnel (MCAT) technique combined with a de-epithelialized gingival graft (DGG) within 1 year post-op, based on intraoral scanning.
METHODS
25 Cairo class I gingival recession defects were treated using an MCAT technique with DGG. Digital impressions were taken using an intraoral scanner at baseline, 2 weeks, 6 weeks, 3 months, and 1 year after the surgery. Three-dimensional quantitative measurements within 1 year were analyzed for buccal augmented tissue after surgery, including postoperative gingival height gain (GHG), area gain (GAG), volume gain (GVG) and mean thickness (GMT) of region of interest, as well as the tissue thickness change at 1, 2, and 3 mm (TTC1, TTC2, and TTC3) apical to the cemento-enamel junction.
RESULTS
Postoperative GHG, GAG, GVG, and GMT were distinctly encountered at 2 weeks post-op, then gradually decreased. At 1 year, GHG, GAG, GVG, and GMT were 2.211 ± 0.717 mm, 7.614 ± 2.511 mm, 7.690 ± 4.335 mm and 0.965 ± 0.372 mm, respectively. Significant decreases were recorded between 6 weeks and 1 year in terms of GHG, GAG, and GVG. The GMT was sustained after 6 weeks with an increase of nearly 1 mm at 1 year. TTC1 and TTC2 yielded thicker tissue change than TTC3.
CONCLUSIONS
Three-dimensional quantitative measurements taken via intraoral scanning showed that buccal augmented tissue acquired via MCAT with DGG tends to be stable after 3 months post-op. Digital measurement can be applied in periodontal plastic surgery as a clinically feasible and non-invasive evaluation method for achieving volumetric outcomes.
TRIAL REGISTRATION
This study was retrospectively registered in the Chinese Clinical Trial Registry: ChiCTR1900026768. Date of registration: 21/10/2019.
背景
本研究旨在通过改良的冠向推进隧道（MCAT）技术联合去上皮化牙龈移植物（DGG），对术后 1 年内颊侧增宽组织的改变进行三维定量分析，基于口内扫描。
方法
25 例开罗 I 类牙龈退缩缺损采用 MCAT 技术联合 DGG 治疗。在基线、术后 2 周、6 周、3 个月和 1 年时使用口内扫描仪进行数字化印模。在术后 1 年内对颊侧增宽组织进行三维定量测量，包括术后牙龈高度增加（GHG）、面积增加（GAG）、体积增加（GVG）和感兴趣区域的平均厚度（GMT），以及牙骨质-釉质界上方 1、2 和 3mm 处的组织厚度变化（TTC1、TTC2 和 TTC3）。
结果
术后 2 周时 GHG、GAG、GVG 和 GMT 明显增加，然后逐渐减少。术后 1 年时，GHG、GAG、GVG 和 GMT 分别为 2.211±0.717mm、7.614±2.511mm、7.690±4.335mm 和 0.965±0.372mm。6 周和 1 年时，GHG、GAG 和 GVG 均有显著下降。GMT 在 6 周后保持稳定，1 年后增加近 1mm。TTC1 和 TTC2 的组织变化比 TTC3 更厚。
结论
通过口内扫描进行的三维定量测量显示，采用 MCAT 联合 DGG 获得的颊侧增宽组织在术后 3 个月后趋于稳定。数字测量可作为一种可行的、非侵入性的评估方法，应用于牙周整形手术，以获得体积学结果。
试验注册
本研究在中国临床试验注册中心进行了回顾性注册：ChiCTR1900026768。注册日期：2019 年 10 月 21 日。
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