上颌前牙美学区牙龈三维形态的锥形束CT测量分析

doi:10.19439/j.sjos.2023.02.012

摘要/Abstract

摘要： 目的: 运用锥形束CT（CBCT）结合显影组合物法间接显影牙龈形态,测量、分析上颌前牙唇侧牙龈三维形态及相互关系。方法: 纳入30名牙周健康的受试者,将成分为光固化牙龈屏障树脂与碘海醇注射液的显影组合物涂布于上颌前牙唇侧,并放置定位丝行CBCT扫描,测量、记录牙槽嵴顶上牙龈组织（SGT）高度,牙龈厚度（GT）、角化龈宽度（KGW）,比较不同牙龈生物型之间各参数的差异。采用SPSS 25.0软件包对数据进行统计学分析。结果: 中切牙唇侧中央SGT距离比尖牙大（P<0.05）,上颌前牙区GT中切牙最厚,尖牙最薄（P<0.01）。男性中切牙和侧切牙GT大于女性（P<0.05）,中切牙和侧切牙KGW大于上颌尖牙（P<0.05）。相关性分析显示,GT-SGT、KGW-SGT、GT-KGW之间存在正相关性（r=0.315,0.287,0.406,P<0.01）。在侧切牙和尖牙的KGW以及尖牙SGT高度中,厚龈型大于薄龈型（P<0.05）。结论: 上颌前牙区不同牙龈生物型SGT、GT、KGW测量结果有显著差异,可根据牙龈生物型,制定个性化治疗方案。

关键词: 牙龈生物型, 锥形束CT, 牙槽嵴顶上牙龈组织, 牙龈厚度, 角化龈宽度

Abstract: PURPOSE: To measure and investigate the relationship of three-dimensional gingival morphology on the labial side of the maxillary anterior teeth by using cone-beam CT(CBCT) in conjunction with a novel radiocontrast agent. METHODS: Thirty periodontal healthy subjects were enrolled. The composition of light-cured gingival barrier resin and iohexol injection was applied to the measurement area, then a positioning wire was set up, and CBCT was used to assess supracrestal gingiva tissue (SGT), gingiva thickness (GT) and width of keratinized gingiva (KGW). The differences in each parameter between different gingival biotypes were compared. SPSS 25.0 software package was used for data analysis. RESULTS: The mean distance of SGT was greater for central incisors than canines (P<0.05). The central incisors had the thickest GT in the maxillary anterior region, while the canines had the thinnest(P<0.01). The GT of male central and lateral incisors was significantly thicker than that of females(P<0.05), and the KGW was significantly wider than that of canines (P<0.05). GT- SGT, KGW- SGT and GT- KGW all had a positive correlation (r=0.315, 0.287,0.406, P<0.01). The thick gingival type was greater than the thin gingival type in the KGW of lateral incisors and canines and the SGT height of canines (P<0.05). CONCLUSIONS: There were significant differences in the measuring results of GT, KGW, and SGT in the maxillary anterior region under different gingival biotypes, and individualized treatment strategies can be formulated based on gingival biotypes.

Key words: Gingival biotype, Cone beam CT, Supracrestal gingival tissue, Gingival thickness, Width of keratinized gingival

中图分类号:

R781.4

王文丽, 傅亚婷, 刘华, 马潇. 上颌前牙美学区牙龈三维形态的锥形束CT测量分析[J]. 上海口腔医学, 2023, 32(2): 177-182.

WANG Wen-li, FU Ya-ting, LIU Hua, MA Xiao. Three-dimensional gingival morphology in the aesthetic zone of maxillary anterior teeth: a cone-beam CT analysis[J]. Shanghai Journal of Stomatology, 2023, 32(2): 177-182.

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