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Low level laser treatments have been used to treat painful trigger points in myofascial pain syndrome (MPS), but the effectiveness of the appropriate laser type and parameters is still uncertain. The aim of this study was to compare the effectiveness of different types of low level laser treatment (LLLT) in reducing pain levels, changing oxygen saturation and bite force in patients with MPS.
A total of 45 patients with MPS were randomly divided into three groups. First group received LLLT with GRR laser over massater muscle region. Patients in the second group were treated with Nd:YAG laser and the same protocol with Nd:YAG laser was performed in the placebo group using sham device. Pain was evaluated by visual analogue scale (VAS), change in oxygen concentration in the massater muscle was measured by functional near-infrared spectroscopy- fNIRS and bite force was measured with Flexiforce sensors before and after treatment.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| GRR laser | Experimental | patients received 15 sessions GRR laser treatment for 3 weeks |
|
| Nd:YAG Laser | Experimental | patients received 10 sessions Nd:YAG laser treatment for 2 weeks |
|
| placebo | Placebo Comparator | patients received 10 sessions emission-free laser treatment for 2 weeks |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| GRR laser | Device | A total of 15 sessions were applied to each patient for three weeks, five times per week. |
|
| Measure | Description | Time Frame |
|---|---|---|
| change from baseline in pain on the 10 point visual analogue scale (VAS) at week 3 | Patients were asked to rate the intensity of their pain on a scale from 0 to 10. They were told that a score of 0 meant no pain, a score of 10 meant severe pain and a score of 5 meant moderate pain | baseline and week 3 |
| change from baseline in oxygen concentration in the massater muscle at week 3 | oxygen concentration in the massater muscle was measured by functional near-infrared spectroscopy- fNIRS (ARGES cerebro, Hemosoft Inc., Ankara, Turkey) before and after treatment for each patient. | baseline and week 3 |
| change from baseline in bite force values at week 3 | bite force values were recorded by Flexiforce sensors before and after treatment for each patient. | baseline and week 3 |
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Inclusion Criteria:
-patients with symptoms of temporomandibular disorders and diagnosed with MPS as a result of the clinical examination.
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| İREM KARAGÖZOĞLU | GAZİANTEP ÜNİVERSİTESİ DİŞ HEKİMLİĞİ FAKÜLTESİ | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| İrem Karagözoğlu | Şehitkamil | Gazi̇antep | 27310 | Turkey (Türkiye) |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 39869221 | Derived | Karagozoglu I, Demirkol N, Parlar Oz O, Yilmaz S, Ozcan M. New generation low level laser effect on masseter muscle oxygenation, bite force and algometric changes in myofacial pain syndrome: a randomised, placebo-controlled clinical trial. Lasers Med Sci. 2025 Jan 27;40(1):48. doi: 10.1007/s10103-024-04272-z. |
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| ID | Term |
|---|---|
| D009209 | Myofascial Pain Syndromes |
| ID | Term |
|---|---|
| D009135 | Muscular Diseases |
| D009140 | Musculoskeletal Diseases |
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| Nd:YAG laser | Device | A total of 10 sessions, five sessions per week, were applied |
|