Da Silva et al.(1111 Silva MA, Botelho AL, Turim CV, Silva AM. Low level laser therapy as an adjunctive technique in the management of temporomandibular disorders. Cranio. 2012;30(4):264-71. http://dx.doi.org/10.1179/crn.2012.040. PMid:23156967. http://dx.doi.org/10.1179/crn.2012.040...
)
|
Brazil |
45 |
To assess the effects of LLL on subjects with intra-articular TMD and quantify and compare the severity of the signs and symptoms before, during, and after applying the laser. |
Yes |
A total of 10 sessions were conducted over 5 weeks, twice a week. The device energy during the applications was 70 mW, the application time varied according to the point, and the wavelength was 780 nm. For 52.5 J/cm2, the application time was 30 seconds and 60 seconds for 105.0 J/cm2. The laser was applied continuously on 5 condylar points, 3 on the masseter, and 3 on the temporal. |
Two different laser doses and a placebo. |
Mandibular movements and painful symptoms evoked with muscle palpation. |
The analysis of variance showed statistically significant differences between the groups, with a level of 1% between doses, (except for the protrusion variables: significant difference of 5%; and opening: not significant), as well as between the assessments (except for laterality – 5% statistical difference. |
This study concluded that the LLL increased the amplitude of the mandibular movements. |
De Carli et al.(1212 De Carli BMG, Magro AKD, Souza-Silva BN, Matos FS, De Carli JP, Paranhos LR, et al. The effect of laser and botulinum toxin in the treatment of myofascial pain and mouth opening: a randomized clinical trial. J Photochem Photobiol B. 2016;159:120-3. http://dx.doi.org/10.1016/j.jphotobiol.2016.03.038. PMid:27045280. http://dx.doi.org/10.1016/j.jphotobiol.2...
)
|
Brazil |
15 |
To compare the use of LLL and botulinum toxin to treat myofascial pain and verify whether they change the mouth opening in patients with TMD. |
Not informed |
Seven applications were made with 48-hour intervals in-between the applications. The wavelength was 830 nm, with a dose of 80 J/cm2 and a power of 100 Mw. It was applied on 2 points of the masseter and 1 on the temporal. |
Laser and type A botulinum toxin. |
The amplitude of mouth opening and intensity of the pain. |
Regarding the amplitude of mouth opening, no statistically significant difference was found between the laser group and the toxin group, considering that neither group had a significant increase during the treatment (p = 0.272). |
The two therapies did not result in statistically significant improvement in the amplitude of mouth opening. |
Kato et al.(1313 Kato MT, Kogawa EM, Santos CN, Conti PC. Tens and low-level laser therapy in the management of temporomandibular disorders. J Appl Oral Sci. 2006;14(2):130-5. http://dx.doi.org/10.1590/S1678-77572006000200012. PMid:19089044. http://dx.doi.org/10.1590/S1678-77572006...
)
|
Brazil |
18 |
To compare the efficacy of transcutaneous electrical nerve stimulation (TENS) and LLL therapy to treat patients with chronic myogenous TMD. |
Not informed |
A total of 10 sessions were conducted over 4 weeks, 3 times a week, with a wavelength of 830 to 904 nm, the output of 4 J/cm2, and power of 100 mW, with sweep movements, for 9 minutes on each side of the face. |
Laser and TENS |
The amplitude of mouth opening and intensity of the pain. |
The results showed an increase in the amplitude of mouth opening in both groups (p < 0.05). There was a significant improvement in the amplitude of mouth opening (initial mean of 42.5 mm – 43 mm in the laser group and 42 mm in the TENS group – and final mean of 47.4 mm – 47.6 and 47.2 mm in the laser and TENS groups, respectively. The ANOVA showed that there was no statistically significant difference between the groups, including the immediate effect (p = 0.860 and p = 0.091, respectively). However, there was a significant difference between the sessions (p<0.0010). |
Both therapies were effective in decreasing the TMD signs and symptoms, but the immediate effect was not significant, and the cumulative effect may have been responsible for this improvement. |
Kogawa et al.(1414 Kogawa EM, Kato MT, Santos CN, Conti PC. Evaluation of the efficacy of low-level laser therapy (LLLT) and the microelectric neurostimulation (MENS) in the treatment of myogenic temporomandibular disorders: a randomized clinical trial. J Appl Oral Sci. 2005;13(3):280-5. http://dx.doi.org/10.1590/S1678-77572005000300015. PMid:20878031. http://dx.doi.org/10.1590/S1678-77572005...
)
|
Brazil |
19 |
To assess the effectiveness of LLL and microelectric neurostimulation (MENS) to treat TMD patients. |
Yes |
The laser therapy was conducted 3 times a week, totaling 10 sessions, with a wavelength of 830 to 904 nm, the output of 4 J/cm2, and power of 100 mW. |
Laser and MENS |
The amplitude of mouth opening, muscle and TMJ palpation, and visual analog scale. |
The results showed an increase in the amplitude of mouth opening. The initial and final means of amplitude in the laser group were 46.3 mm and 49.4 mm, respectively, while in the microelectric neurostimulation (MENS) group, it was 46.3 mm and 44 mm, respectively. There was no significant difference between the groups. |
The conclusion was that both therapies (laser and MENS) are effective to treat myogenous TMD, but caution in result analysis is recommended, due to the self-limiting aspect of TMD. The amplitude of mouth opening improved in both groups. |
Machado et al.(1515 Machado BCZ, Mazzetto MO, Da Silva MA, De Felício CM. Effects of oral motor exercises and laser therapy on chronic temporomandibular disorders: a randomized study with follow-up. Lasers Med Sci. 2016;31(5):945-54. http://dx.doi.org/10.1007/s10103-016-1935-6. PMid:27085322. http://dx.doi.org/10.1007/s10103-016-193...
)
|
Brazil |
82 |
To investigate the efficacy of combining oral myotherapy exercises and LLL, in comparison with oral myofunctional therapy protocol, with LLL therapy alone, and placebo combined with exercises. To verify the effects of each program immediately after the treatment and in long-term follow-up. |
Yes |
Twelve weekly sessions for 60 days, and then every 2 weeks. Continuous emission at 780 nm wavelength, 60 mW power, and energy density varying around 60 +- 1 J/cm2. It was applied on 5 TMJ points and on the masseter and temporal muscles. |
Laser + oral myotherapy exercises; laser alone; placebo + oral myotherapy exercises and complete oral myofunctional therapy protocol. |
Self-assessment of TMD severity, pain with palpation, the subjective intensity of the pain, orofacial myofunctional status (appearance/posture, mobility, and performance of the stomatognathic functions). |
The results of the orofacial myofunctional evaluation protocol with scores were lower than in the placebo group, without statistically significant results between the groups. |
The LLL combined with oral myotherapy exercises was more effective than LLL alone, decreasing the TMD signs and symptoms and improving the mandibular movements. |
Öz et al.(1616 Öz S, Gökçen-Röhlig B, Saruhanoglu A, Tuncer EB. Management of Myofascial Pain: Low-Level Laser Therapy Versus Occlusal Splints. J Craniofac Surg. 2010;21(6):1722-8. http://dx.doi.org/10.1097/SCS.0b013e3181f3c76c. PMid:21119408. http://dx.doi.org/10.1097/SCS.0b013e3181...
)
|
Turkey |
40 |
To assess the efficiency of the laser and compare it with occlusal splints to treat myofascial pain. |
Yes |
A total of 10 sessions were conducted, twice a week. The wavelength was infrared (820 nm), with a dose of 3 J/cm2, an output power of 300 mW, lasting 10 s on each point. The laser was precisely and continuously applied to the trigger points. |
Laser and interocclusal splints. |
Functional examination, finding the pressure pain threshold and amplitude of mouth opening. |
Both groups had statistically significant improvements in the vertical mandibular movements after the treatment, and no significant differences were identified between the groups. |
The laser was as effective as the interocclusal splints, and it can be an alternative treatment, as it is noninvasive and non-pharmacological. |
Seifi et al.(1717 Seifi M, Ebadifar A, Kabiri S, Badiee MR, Abdolazimi Z, Amdjadi P. Comparative effectiveness of Low Level Laser therapy and Transcutaneous Electric Nerve Stimulation on Temporomandibular Joint Disorders. J Lasers Med Sci. 2017;8(Supl. 1):S27-31. http://dx.doi.org/10.15171/jlms.2017.s6. PMid:29071032. http://dx.doi.org/10.15171/jlms.2017.s6...
)
|
Iran |
40 |
To assess the effect of LLL therapy and TENS on TMD. |
Yes |
Four half-hour sessions were conducted per week. The wavelength was 810 nm, with a continuous power of 0.5 W, for 60 s. |
Laser, laser placebo, TENS, and TENS placebo. |
Sensitivity of the masticatory muscles and amplitude of mouth opening. |
The amplitude of mouth opening improved with time. However, it did not remain after 1 month in relation to the baseline (p=0.192). There were no significant differences between the LLL and TENS groups (p=0.820) in any of the stages. No statistically significant differences were found between the placebos (p=0.738). Mouth opening was significant in the laser and TENS groups and greater than in the placebo groups (p=0.002), though not in the 1-month follow-up (p=0.692). |
The effects of laser and TENS can improve the TMD signs and symptoms in the short run and can be physical modalities of complementary and supplemental alternatives in TMD. |
Gökçen-Röhlig et al.(1818 Gökçen-Röhlig B, Kipirdi S, Meriç U, Capan N, Keskin H. Masticatory muscle pain and low-level laser therapy: a double-blind and placebo-controlled study. Turk J Phys Med Rehab. 2011;57:31-7. http://dx.doi.org/10.4274/tftr.57.06.12. http://dx.doi.org/10.4274/tftr.57.06.12...
)
|
Turkey |
40 |
To investigate the efficacy of LLL with 820 nm, 3 J/cm2, 300 Mw output power to treat myogenous TMD. |
Yes |
A total of 10 laser sessions were conducted daily for 3 weeks. The wavelength was infrared (820 nm), with a dose of 8 J/cm2 and power of 300 mW, for 10 s. It was continuously applied on 3 points of the masseter, 1 on the temporal, and 1 on the sternocleidomastoid muscle. |
Laser and placebo |
pressure pain threshold, visual analog scale, and mandibular mobility. |
The laser group had statistically significant improvements in the vertical mandibular movements and lateral excursions. |
The effects of laser are better than the results of the placebo group. |
Madani et al.(1919 Madani A, Ahrari F, Fallahrastegar A, Daghestani N. A randomized clinical trial comparing the efficacy of low-level laser therapy (LLLT) and laser acupuncture therapy (LAT) in patients with temporomandibular disorders. Lasers Med Sci. 2020;35(1):181-92. http://dx.doi.org/10.1007/s10103-019-02837-x. PMid:31396794. http://dx.doi.org/10.1007/s10103-019-028...
)
|
Iran |
45 |
To investigate the efficacy of LLL to treat osteoarthritis and TMD. |
Yes |
A total of 12 sessions were conducted 3 times a week, for 4 weeks. The laser was applied with contact, with a power of 50 mW, 6 J per point, 3.4 J/cm2 on 4 points of the TMJ, 3 on the masseter, 3 on the temporal, and on the attachment of the internal pterygoid muscle. |
Laser, laser acupuncture, and placebo |
Degree of pain, the amplitude of mouth opening, and joint noises. |
After 12 sessions of laser application, the mean amplitude of mouth opening increased from 29.2 mm to 31.7 mm (an 8% increase) in the laser group. In the placebo treatment, it increased from 23.5 mm to 24.7 mm (a 5% increase). The analysis did not show a statistically significant difference between the groups of study or between the different assessment times in each group. |
The laser and placebo group did not significantly improve the amplitude of mouth opening. |
Sancakli et al.(2020 Sancakli E, Gökçen-Röhlıg B, Balık A, Öngül D, Kıpırdı S, Keskın H. Early results of low-level laser application for masticatory muscle pain: a double-blind randomized clinical study. BMC Oral Health. 2015;15(1):131. http://dx.doi.org/10.1186/s12903-015-0116-5. PMid:26496720. http://dx.doi.org/10.1186/s12903-015-011...
)
|
Turkey |
30 |
To assess the effect of applying LLL in the main pain points in patients with chronic masticatory muscle pain (myofascial pain). |
Yes |
A total of 12 sessions were conducted 3 times a week, for 1 month. The wavelength was infrared (820 nm), with a dose of 3 J/cm2 and output power of 300 mW for 10 s. It was applied on the main pain points and 3 points of the masseter and temporal muscles. |
Laser on the main pain points and preestablished points. |
Mandibular mobility (amplitude, lateral excursions, protrusion), pressure pain threshold, pressure measure, and subjective measure of the pain. |
The vertical mandibular movements, lateral excursions, and protrusion improved significantly in the LLL groups. |
The LLL had positive effects on the mandibular movements due to its analgesic and myorelaxant effects. There was no difference between the application on the pain and preestablished points. |