Department of Prosthodontics, Dental Clinic of the Justus Liebig University Giessen, Giessen, Germany.
Department of Oral and Maxillofacial Surgery, Dr. Horst Schmidt Clinic Wiesbaden, Wiesbaden, Germany.
Clin Oral Investig. 2024 Jun 1;28(6):350. doi: 10.1007/s00784-024-05740-0.
The study continues our longitudinal observation of wear aiming to further monitoring of progression and lesion morphology and to identify relationships with assumed aetiological factors.
Molars (FDI #36 or #46) of 74 participants (23.8 ± 2.2 years) were scanned (Trios 3, 3Shape) at the third follow-up (T3; observation period 1,111 ± 10 days). Data sets from T3, T2 (24-month follow-up) and T1 (12-month follow-up) were superimposed with baseline in a 3D analysis software (GOM Inspect). Wear was quantified as maximum vertical tissue loss (µm; median, 95% CI) in various occlusal areas (4/5 cusps and 2 ridges). Morphologies were classified into cupping (C), facet (F), and combined cupping-facet (CF). Aetiological factors were assessed with questionnaires.
Wear increased at T3 significantly at low rates in all areas of the occlusal surface (median between 7.0 (4.0;10.5) and 9.5 (6.0;15.0) µm). There was a clear trend for higher loss values in males, but no association with other factors such as nutrition. C and CF showed significantly higher loss values than F. Areas without initial wear developed F first, which either persisted or developed into C and CF.
Wear continued at low rates with C/CF morphology and sex as significant factors. Cupped lesions seem to develop from facets and thus may not be a valid diagnostic criterion for erosive tooth wear.
Wear is a cumulative process that apparently follows complex mechanisms that cannot be conceptualized in simplified terms; C and CF may be indicators for higher progression rates.
本研究延续了我们对磨损的纵向观察，旨在进一步监测进展和病变形态，并确定与假设病因因素的关系。
74 名参与者（23.8±2.2 岁）的磨牙（FDI #36 或 #46）在第三次随访（T3；观察期 1,111±10 天）时进行扫描（Trios 3、3Shape）。将 T3、T2（24 个月随访）和 T1（12 个月随访）的数据与基线在 3D 分析软件（GOM Inspect）中叠加。磨损以最大垂直组织损失（µm；中位数，95%CI）在不同的咬合区域（4/5 牙尖和 2 个嵴）进行量化。形态学分为杯状（C）、面状（F）和复合杯状-面状（CF）。病因因素通过问卷调查进行评估。
在所有咬合面区域，T3 时磨损均以较低的速度显著增加（中位数在 7.0（4.0；10.5）和 9.5（6.0；15.0）µm 之间）。男性的失牙量明显较高，但与营养等其他因素无关。C 和 CF 的失牙量明显高于 F。最初无磨损的区域首先出现 F，然后持续或发展为 C 和 CF。
以 C/CF 形态和性别为显著因素，磨损以低速率继续。杯状病变似乎是从面状发展而来的，因此不能作为牙酸蚀症磨损的有效诊断标准。
磨损是一个累积的过程，显然遵循复杂的机制，不能用简化的术语来概念化；C 和 CF 可能是更高进展率的指标。
