Lietz-Kijak Danuta, Garstka Adam Andrzej, Szczucka Lidia, Ardan Roman, Brzózka-Garstka Monika, Skomro Piotr, D'Arcangelo Camillo
Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland.
Department of Economics, Faculty of Economic Sciences, Koszalin University of Technology, 75-343 Koszalin, Poland.
Dent J (Basel). 2025 Jul 11;13(7):313. doi: 10.3390/dj13070313.
Medical Infrared Thermography (MIT) is a safe, non-invasive technique for assessing temperature changes on the skin's surface that may reflect pathological processes in the underlying tissues. In temporomandibular joint disorders (TMDs), which are often associated with reduced mobility and muscle overactivity, tissue metabolism and blood flow may be diminished, resulting in localized hypothermia.
The purpose of this study was to evaluate muscle tone in the masseter, suprahyoid, and sternocleidomastoid muscles following the application of two types of occlusal splints, a Michigan splint and a double repositioning splint, based on temperature changes recorded using a Fluke Ti401 PRO thermal imaging camera.
Sixty dental students diagnosed with TMDs were enrolled in this study. After applying the inclusion and exclusion criteria, participants were randomly assigned to one of two groups. Group M received a Michigan splint, while group D was treated with a double repositioning splint.
The type of occlusal splint influenced both temperature distribution and muscle tone. In the double repositioning splint group, temperature decreased by approximately 0.8 °C between T1 and T3, whereas in the Michigan splint group, temperature increased by approximately 0.7 °C over the same period.
Occlusal splint design has a measurable impact on temperature distribution and muscle activity. The double repositioning splint appears to be more effective in promoting short-term muscle relaxation and may provide relief for patients experiencing muscular or myofascial TMD symptoms.
医学红外热成像（MIT）是一种安全、无创的技术，用于评估皮肤表面的温度变化，这些变化可能反映潜在组织中的病理过程。在颞下颌关节紊乱病（TMDs）中，该病常与活动度降低和肌肉过度活动有关，组织代谢和血流可能会减少，导致局部体温过低。
本研究的目的是基于使用福禄克Ti401 PRO热成像相机记录的温度变化，评估在使用两种类型的咬合板（密歇根咬合板和双重复位咬合板）后咬肌、舌骨上肌群和胸锁乳突肌的肌张力。
60名被诊断为TMDs的牙科学生参与了本研究。在应用纳入和排除标准后，参与者被随机分配到两个组中的一组。M组接受密歇根咬合板，而D组接受双重复位咬合板治疗。
咬合板的类型影响温度分布和肌张力。在双重复位咬合板组中，T1和T3之间温度下降了约0.8°C，而在密歇根咬合板组中，同期温度上升了约0.7°C。
咬合板设计对温度分布和肌肉活动有可测量的影响。双重复位咬合板似乎在促进短期肌肉松弛方面更有效，可能为患有肌肉或肌筋膜TMD症状的患者提供缓解。
