Kamlangchai Phanthit, Kampa Naruepon, Srithunyarat Thanikul, Seesupa Suvaluk, Hoisang Somphong, Kaenkangploo Duangdaun, Jitasombuti Preenun, Nonthakotr Chalermkwan, Boonbal Nitaya, Jitpean Supranee
Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
Division of Surgery, Faculty of Veterinary Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
Vet World. 2024 May;17(5):1124-1129. doi: 10.14202/vetworld.2024.1124-1129. Epub 2024 May 17.
Low-level laser therapy (LLLT) has shown benefits as an alternative treatment of feline chronic gingivostomatitis by reducing pain and inflammation within the oral cavity. Extraoral application technique in cats provides more comfort compared to intraoral application. However, the efficacy of LLLT through buccal tissue is still controversial. This study aimed to investigate the penetration efficacy of LLLT using 830 nm continuous waves with various settings and different application techniques.
Twenty-four healthy cats were included in this study. The wavelength of LLLT was 830 nm with an output power of 200 mW through extraoral application, using fluences of 2 and 6 J/cm in continuous-wave mode. This study compared different distances (contact and non-contact) and three different transmission media (absent media, alcohol, and normal saline solution). Measurement of the laser power within the oral cavity is represented as the mean output power (MOP).
Penetration efficacy was detectable for all fluences, distances, and transmission media, with an average buccal thickness of 2.68 mm. MOP did not differ between fluences of 2 and 6 J/cm (p = 0.19). In the absence of media, MOP was significantly higher compared with alcohol (p < 0.05) but was not significantly different from normal saline solution (p = 0.26).
Extraoral application of LLLT demonstrated penetration efficacy through the buccal tissue with both contact and non-contact skin (<10 mm). This is a potential alternative treatment for oral diseases in clinical practice. However, there is a need for further study on the efficacy of treatment in clinical practice.
低强度激光疗法（LLLT）已显示出作为猫慢性龈口炎替代治疗方法的益处，可减轻口腔内的疼痛和炎症。与口腔内应用相比，猫的口腔外应用技术能提供更多舒适感。然而，LLLT通过颊组织的疗效仍存在争议。本研究旨在调查使用830nm连续波、不同设置和不同应用技术的LLLT的穿透疗效。
本研究纳入了24只健康猫。LLLT的波长为830nm，通过口腔外应用输出功率为200mW，在连续波模式下使用2和6J/cm²的能量密度。本研究比较了不同距离（接触和非接触）和三种不同的传输介质（无介质、酒精和生理盐水溶液）。口腔内激光功率的测量以平均输出功率（MOP）表示。
对于所有能量密度、距离和传输介质，均检测到穿透疗效，平均颊厚度为2.68mm。2和6J/cm²能量密度之间的MOP无差异（p = 0.19）。在无介质时，MOP显著高于酒精（p < 0.05），但与生理盐水溶液无显著差异（p = 0.26）。
LLLT的口腔外应用在接触和非接触皮肤（<10mm）时均显示出通过颊组织的穿透疗效。这是临床实践中口腔疾病的一种潜在替代治疗方法。然而，需要进一步研究其在临床实践中的治疗效果。
