Department of Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, Nijmegen, EX 6525, The Netherlands.
Department of Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, Nijmegen, EX 6525, The Netherlands.
J Dent. 2023 Nov;138:104693. doi: 10.1016/j.jdent.2023.104693. Epub 2023 Sep 6.
To explore the variability of tooth wear progression at the surface-, tooth- and patient-level over a period of three years three years using in vivo 3D-measurements of full dentitions amongst patients with moderate to severe tooth wear and without demand for restorative rehabilitation.
Fifty-five eligible patients with moderate to severe tooth wear had intra-oral scans taken using either the 3 M True Definition Intraoral Scanner or the 3 M Lava Chairside Oral Scanner. The maximum height loss (µm) per cusp/incisal/palatal surface at unrestored surfaces was measured using the 3D Wear Analysis (3DWA)-protocol with Geomagic Qualify, resulting in sixty-four measurements per dentition. Data was visualized using box plots. Correlation was calculated between tooth wear progression rates of different tooth types and surfaces.
Thirty patients with scans at intake and after three years were included (38 ± 8 years, 77% M, 23% F). Mean observation time was 3.1 ± 0.2 years. Surface measurements (N = 1,615) showed a high deviation and a high number of outliers at all surfaces, indicating large variability amongst the surfaces, tooth types and patients with tooth wear progression rates. Correlations between regions were very low: anterior-molar region -0.219, anterior-premolar region 0.116 and premolar-molar region 0.113. Correlations between the surfaces of molars were also low (between 0.190 and 0.565).
In a group of patients with moderate to severe tooth wear, large differences in wear progression were found within and amongst patients. Tooth wear progression is therefore highly individualized and can be very localized.
This study confirms the necessity of individual management of patients with moderate to severe tooth wear. Effective monitoring of tooth wear is important when deciding the timing and need for restorative intervention.
NCT04790110.
使用三维（3D）磨损分析（3DWA）协议，通过对中重度牙磨损且无需修复治疗的患者的全牙列进行口腔内扫描，在三年内探索表面、牙齿和患者水平的牙齿磨损进展的可变性。
55 名符合条件的中重度牙磨损患者使用 3M True Definition 口腔内扫描仪或 3M Lava 椅旁口腔扫描仪进行口腔内扫描。使用 Geomagic Qualify 软件，通过 3DWA 协议对未修复表面的每个牙尖/切缘/腭面的最大高度损失（µm）进行测量，每个牙列得到 64 个测量值。使用箱线图对数据进行可视化。计算不同牙型和表面的牙齿磨损进展率之间的相关性。
30 名患者在入组时和三年后进行了扫描（38±8 岁，77%为男性，23%为女性）。平均观察时间为 3.1±0.2 年。表面测量（N=1615）显示所有表面的偏差较大且异常值较多，表明在牙磨损进展率方面，表面、牙型和患者之间存在较大差异。区域之间的相关性非常低：前磨牙区为-0.219，前磨牙区为 0.116，磨牙区为 0.113。磨牙表面之间的相关性也较低（在 0.190 到 0.565 之间）。
在一组中重度牙磨损的患者中，发现了患者内和患者间磨损进展的较大差异。因此，牙齿磨损的进展具有高度的个体性，并且可能非常局限。
本研究证实了对中重度牙磨损患者进行个体化管理的必要性。有效监测牙齿磨损对于决定修复干预的时机和必要性非常重要。
NCT04790110。
