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Evaluation of the effects of occlusal splint and masseter muscle injection in patients with myofascial pain: a randomised controlled trial
1Department of Oral and Maxillofacial Surgery, School of Dentistry, Istanbul Medipol University, 34083 Istanbul, Turkey
2Department of Prosthodontics, School of Dentistry, Istanbul Medipol University, 34200 Istanbul, Turkey
3Department of Radiology, International School of Medicine, Istanbul Medipol University, 34200 Istanbul, Turkey
DOI: 10.22514/jofph.2024.028 Vol.38,Issue 3,September 2024 pp.64-76
Submitted: 13 December 2023 Accepted: 23 April 2024
Published: 12 September 2024
*Corresponding Author(s): Reyhan Saglam E-mail: dr.reyhansaglam@gmail.com
Myofascial pain is one of the common symptoms in patients with temporomandibular joint disorders (TMD). Occlusal splint (OS) and masticatory muscle trigger point (TP) local injections are primary treatment options. We aimed to investigate the effects of these treatments using clinical and elastography measures. Patients who were diagnosed with myofascial pain according to Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) were included. There were 16 patients in each group. Group 1 was treated with occlusal splint, Group 2 was treated with occlusal splint and masseter muscle lidocaine injection, Group 3 was treated with masseter muscle lidocaine injection and Group 4 consisted of healthy volunteers. Degree of pain and maximum mouth opening (MMO) were recorded. Masseter muscle stiffness was evaluated by Shear wave elastography. Measurements were repeated at 1st and 3rd months of post-treatment. Pain decreased at all times in all the patients (p = 0.001). Pain in Group 2 and Group 3 approached 0 level at 3rd month. MMO increased from baseline to 1st month and from 1st month to 3rd month and masseter stiffness decreased from baseline to 1st month and to 3rd month (p = 0.001) in all groups. Occlusal splint and masseter muscle lidocaine injection were effective in reducing pain and increasing MMO in patients with myofascial pain. All treatments reduced masseter muscle stiffness. All the treatment modalities had clinically similar and successful outcomes.
Masseter muscle; Masticatory muscle disorders; Occlusal splint; Shear wave elastography; Temporomandibular disorders; Trigger point injection
Reyhan Saglam,Cagri Delilbasi,Gulsum Sayin Ozel,Irmak Durur Subasi. Evaluation of the effects of occlusal splint and masseter muscle injection in patients with myofascial pain: a randomised controlled trial. Journal of Oral & Facial Pain and Headache. 2024. 38(3);64-76.
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