University of Naples Federico II, Naples, Italy.
University of Salerno, Salerno, Italy.
J Oral Rehabil. 2020 Aug;47(8):923-929. doi: 10.1111/joor.12996. Epub 2020 Jun 7.
To compare the smallest thickness that can be perceived between occluding teeth (occlusal tactile acuity, OTA) of temporomandibular disorder pain (TMD-P) patients with that of control (CTR) individuals.
Twenty TMD-P patients (17 women and 3 men, mean age: 31.3 ± 10.4 years) diagnosed according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) protocol and 20 age- and gender-matched controls (17 women and 3 men, mean age: 31.4 ± 10.5 years) were enrolled. The OTA was tested with 10 different thicknesses: 9 aluminium foils (8 µm-72 µm with a constant increment of 8 µm) and 1 sham test (without foil), each thickness being tested 10 times in random order (100 tests in total). The participants were instructed to close their mouth once and to report whether they felt the foil between their molar teeth. A between-group comparison (TMD-P vs CTR) was performed for each testing thickness (analysis of variance for repeated measurements, with Bonferroni multiple correction) (P < .005).
Significantly increased OTA was observed in the TMD-P group for the thicknesses between 8 µm and 40 µm, while no significant differences were found for the sham test and for the larger thicknesses tested (from 48 µm to 72 µm).
TMD-pain subjects presented an increased OTA as compared to controls.
比较颞下颌关节紊乱疼痛（TMD-P）患者与对照组（CTR）个体之间可感知的咬合牙齿之间最小厚度（咬合触觉敏锐度，OTA）。
根据颞下颌关节紊乱诊断标准（DC/TMD）协议诊断的 20 名 TMD-P 患者（17 名女性和 3 名男性，平均年龄：31.3±10.4 岁）和 20 名年龄和性别匹配的对照组（17 名女性和 3 名男性，平均年龄：31.4±10.5 岁）被纳入研究。使用 10 种不同厚度的 10 种铝箔（8μm-72μm，厚度增量为 8μm）和 1 种假测试（无箔）测试 OTA，每种厚度随机测试 10 次（总共 100 次测试）。参与者被指示闭上嘴一次，并报告他们是否感觉到磨牙之间的箔片。对每个测试厚度进行组间比较（TMD-P 与 CTR）（重复测量方差分析，采用 Bonferroni 多重校正）（P<.005）。
TMD-P 组在 8μm 至 40μm 的厚度下观察到明显增加的 OTA，而在假测试和测试的较大厚度（48μm 至 72μm）下未发现显著差异。
与对照组相比，TMD 疼痛患者的 OTA 增加。
