Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.
Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Başkent University, Ankara, Turkey.
Dentomaxillofac Radiol. 2021 Jul 1;50(5):20200309. doi: 10.1259/dmfr.20200309. Epub 2020 Nov 30.
To evaluate and compare the accuracy of high-resolution ultrasound (US) with two different cone beam CT (CBCT) units and clinical assessment for measuring gingival soft tissue thickness in edentulous patients prior to implant placement.
The study consisted of 40 maxillary implant sites of 40 healthy patients (20 females, 20 males; mean age, 47.88 years). We prospectively evaluated labial/buccal gingival thickness in 40 implant regions (16 anterior and 24 posterior) by using limited field of view (FOV) CBCT images and US images in comparison to gold standard transgingival probing measurements. One-way analysis of variance (ANOVA) was used to compare mean measurements obtained from CBCT (Morita and Planmeca), US, and transgingival probing. Interclass correlation coefficient (ICC) estimates were calculated based on means with two-way mixed and absolute-agreement model. Bland Altman plot was used to describe agreement between clinical US and CBCT measurements by constructing limits of agreement. Statistical significance was set at < 0.05.
There was no significant difference between methods used according to mean gingival thickness measurements obtained from the top ( = 0.519) and bottom ( = 0.346) of the alveolar process. US and CBCT measurements highly correlated with clinical measurements for both top and bottom alveolar process gingival thickness ( < 0.001). Distribution of differences between clinical measurements and both CBCT measurements showed statistically significant differences according to 0 ( < 0.05). Distribution of differences between clinical measurements and US measurements did not show statistically significant difference ( > 0.05).
High-resolution US provided accurate information for the measurement of gingival soft tissue thickness in edentulous patients prior to implant placement.
评估和比较高分辨率超声（US）与两种不同的锥形束 CT（CBCT）设备以及临床评估在种植体植入前测量无牙患者牙龈软组织厚度的准确性。
该研究纳入了 40 名健康患者（20 名女性，20 名男性；平均年龄 47.88 岁）的 40 个上颌种植部位。我们前瞻性地评估了 40 个种植区域（16 个前牙区和 24 个后牙区）的唇/颊侧牙龈厚度，分别使用有限视野（FOV）CBCT 图像和 US 图像，并与金标准经龈探测测量值进行比较。使用单向方差分析（ANOVA）比较从 CBCT（Morita 和 Planmeca）、US 和经龈探测获得的平均测量值。基于均值，使用双向混合和绝对一致模型计算组内相关系数（ICC）估计值。Bland-Altman 图用于描述临床 US 和 CBCT 测量值之间的一致性，通过构建一致性界限来描述。统计显著性设为 < 0.05。
根据牙槽嵴顶（ = 0.519）和牙槽嵴底（ = 0.346）的牙龈厚度测量值，使用的方法之间没有显著差异。US 和 CBCT 测量值与临床测量值高度相关，均用于牙槽嵴顶和牙槽嵴底的牙龈厚度（ < 0.001）。根据临床测量值与两种 CBCT 测量值之间的差值分布，均显示出统计学显著差异（ < 0.05）。根据临床测量值与 US 测量值之间的差值分布，未显示出统计学显著差异（ > 0.05）。
高分辨率 US 为无牙患者种植体植入前测量牙龈软组织厚度提供了准确的信息。
