The effect of oral appliances on sleep bruxism and temporomandibular disorders: A randomized controlled trial

DOI
  • OKI Kyosuke
    Section of Dental Education, Faculty of Dental Science, Kyushu University
  • OHO Kohei
    Section of Dental Education, Faculty of Dental Science, Kyushu University
  • TSUKIYAMA Yoshihiro
    Section of Dental Education, Faculty of Dental Science, Kyushu University
  • ATSUTA Ikiru
    Section of Dental Education, Faculty of Dental Science, Kyushu University
  • KANEKO Megumi
    Section of Dental Education, Faculty of Dental Science, Kyushu University
  • AYUKAWA Yasunori
    Section of Dental Education, Faculty of Dental Science, Kyushu University
  • KOYANO Kiyoshi
    Section of Dental Education, Faculty of Dental Science, Kyushu University

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Other Title
  • 睡眠時ブラキシズムを有する顎関節症患者へ用いたオーラルアプライアンスの効果に関するランダム化比較試験

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<p>Oral appliances (OA) are widely used in daily clinical practice as a reversible and conservative therapy for masticatory muscle pain and sleep bruxism (SB). However, there is insufficient evidence for their therapeutic effect. Hence, the objectives of this randomized clinical trial were to clarify the effects of OA on masticatory muscle pain and SB activity. Sixteen patients who were referred to the TMD clinic at Kyushu University Hospital with masticatory muscle pain and SB participated in this study. They were randomly allocated to either the splint group, who wore OA during sleep, or the control group. Electromyographic activity of the masseter muscle during sleep was recorded at baseline, immediately after, and 1, 4, and 6 weeks after the insertion of OA. At baseline and 6 weeks after starting the treatment, masticatory muscle pain was evaluated by a visual analog scale and muscle palpation, and Oral Health Impact Profile-49 (OHIP-49) scores were recorded. There were statistically significant differences in the muscle palpation index and OHIP-49 total score between the OA and control groups. There was a significant reduction in SB events immediately after wearing OA, but no change at 1, 4, or 6 weeks after starting the treatment. A simple correlation between SB activity and pain parameters was not found. In conclusion, OA had positive effects on both masticatory muscle pain and SB, but effects on SB were transient.</p>

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