Effect of Low-level Laser Therapy on Orthodontic Tooth Movement

Kochar, Gagan Deep; Londhe, SM; Varghese, Bensy; Jayan, B; Kohli, Sarvaraj; Kohli, Virinder Singh

doi:10.1177/0974909820170204

Cited by 6 publications

(23 citation statements)

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“…Kochar et al 26 The distance between mesial cusp tip of the first molar and The increase in tooth movement velocity was greater in the PBMT Yes cusp tip of the canine for both the exposed and unexposed group than the control. The maxilla presented greater velocity of side in both the maxillary and the mandibular arch was re-orthodontic tooth movement than the mandible.…”

Section: Quality Of Evidencementioning

confidence: 93%

“…Of the total of 16 studies, seven presented high risk of bias, 13,24,26,30-33 nine presented unclear risk, 11,12,[17][18][19]25,[27][28][29] and none presented low risk. Two studies presented low risk of bias for 'blinding of personnel', 18,19 six studies did not report whether that domain was assessed, and seven studies did not carry out 'blinding of personnel', 13,24,26,[30][31][32][33] which was the principal risk of bias found. Six studies were classified as having low risk of bias for 'blinding of outcome assessment', 13,18,26,27,31,32 two were classified…”

Section: Risk Of Biasmentioning

confidence: 99%

“…42 In the present investigation we assessed the effectiveness of PBMT in accelerating OTM, observing that 68.75% of the RCTs reported an increase in the OTM rate with the application of PBMT as compared to non-intervention. [11][12][13]18,19,[24][25][26][27][28][29] For successful treatment the PBMT application parameters must be chosen considering the dose-biphase response (Arndt Schulz curve). 43 When the tissue is irradiated with a lower dose than the optimum (sub-optimal dose) it may not achieve such a significant therapeutic result, however when a very high dose is applied an inhibitory or contrary effect may occur.…”

Section: Summary Of Evidencementioning

confidence: 99%

“…48 In the present review, all the studies used near infrared laser, which has greater penetration power in human tissue than red laser, 49 reaching 2-4mm below the skin surface. 47 56.2% of the studies used wavelengths between 780 and 860nm, [11][12][13]19,25,26,29,30,33 and 43.8% used PBMT at very high wavelengths, between 880 and 940nm. 17,18,24,27,28,31,32 For studies which analyzed orthodontic movement during tooth alignment, the frequency of PBMT application was either a single application 32 or four times per month.…”

Section: Summary Of Evidencementioning

confidence: 99%

“…The principal risk of bias in the studies included in the present review was 'blinding of personnel', for which only two studies presented a low risk of bias; 18,19 seven studies did not report whether this domain was carried out and seven studies did not carry out 'blinding of personnel'. 13,24,26,[30][31][32][33] It should be noted that 'blinding of personnel' is quite difficult to apply in PBMT, especially with operators who are familiar with the equipment; many types of equipment produce sound and emit light during treatment, making it very difficult to blind the procedure from the operator. In the present review only 40% of the studies carried out 'blinding of outcome assessment' .…”

Section: Summary Of Evidencementioning

confidence: 99%

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Effectiveness of photobiomodulation therapy in accelerating orthodontic tooth movement: a meta-analysis of randomized clinical trials.

2020

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To assess the effectiveness of photobiomodulation therapy (PBMT) in accelerating orthodontic tooth movement (OTM). Material and Methods: A systematic review was carried out in MEDLINE, Cochrane Library, EMBASE and LILACS of articles in English, Portuguese and Spanish. Additional studies were identified by searching bibliographies. The search terms included: randomized controlled trial (RCT), lowlevel laser therapy, phototherapy, orthodontic wires, orthodontic anchorage procedures, activator appliances. Study Selection: Only RCTs which analyzed the effect of PBMT in accelerating OTM were included. Independent extraction of articles by two authors using predefined data fields, including study quality indicators was performed. The risk of bias of the eligible trials was assessed using the Cochrane Collaboration's risk of bias tool. Mean difference was calculated and pooled by meta-analysis using random effect models. The quality of the evidence was assessed using GRADE Pro. Results: Fourteen RCTs analysing tooth movement in the canine retraction (CR) phase and two studies in the tooth alignment phase were included in the qualitative analysis; 68.75% of the RCTs reported that PBMT was effective in accelerating OTM. Nine studies presented 'unclear risk of bias' and seven presented 'high risk of bias'. Mean difference was calculated and pooled by meta-analysis using random effect models. Twelve studies presented sufficient information for inclusion in the meta-analysis. Photobiomodulation doses between 50 and 75 J/cm 2 were effective in accelerating OTM in months 1, 2 and 4 of CR, and in increasing the accumulated CR rate. The quality of the evidence was downgraded due to the risks of bias, imprecision or considerable heterogeneity of the studies. Conclusions: PBMT treatment with low or very high application of total/per tooth ED is not effective in accelerating OTM. Application of energy density (ED) between 50 and 75 J/cm 2 per tooth was effective in accelerating OTM after 1 and 2 months of CR, as well as in increasing the accumulated CR rate.

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Section: Quality Of Evidencementioning

confidence: 93%

Section: Risk Of Biasmentioning

confidence: 99%

Section: Summary Of Evidencementioning

confidence: 99%

Section: Summary Of Evidencementioning

confidence: 99%

Section: Summary Of Evidencementioning

confidence: 99%

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Effectiveness of photobiomodulation therapy in accelerating orthodontic tooth movement: a meta-analysis of randomized clinical trials.

2020

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Effectiveness of low-level laser therapy in accelerating the orthodontic tooth movement: A systematic review and meta-analysis

Bakdach

Hadad

2020

Dent. Med. Probl.

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Objectives. The aim of the paper was to appraise the current evidence of the effectiveness of low-level laser therapy (LLLT) in accelerating the tooth movement. Methods.A comprehensive search was performed in 9 databases up to June 2019. Only randomized controlled trials (RCTs) were included. The risk of bias was assessed using the Cochrane Collaboration tool. The quantitative data synthesis was attainable only for the studies evaluating the effect of laser on canine retraction; the qualitative description was used for the rest of the studies. The overall quality of evidence was rated using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) criteria. Results.A total of 25 RCTs were included in this review. The radiated upper canines showed a greater retraction -0.50 mm and 0.49 mm at months 2 and 3, respectively. The radiated lower canines showed a greater retraction -0.28 mm and 0.52 mm at months 2 and 3, respectively. No statistically significant differences were observed among the upper and lower canines after the 1 st month of retraction. When the GRADE approach was utilized, the overall quality of evidence limited confidence in the estimates. The qualitative description revealed enhanced tooth movement when LLLT was applied. The attrition bias was the main risk factor affecting the methodology of the studies.Conclusions. Low-level laser therapy can speed up the rate of the tooth movement. However, the overall quality of evidence ranged from low to very low and the clinical significance of the obtained statistically significant differences is questionable. Hence, more precise studies are needed. As discussed in this review, it is highly recommended to express and compare the laser dosage with the total number of joules applied per month rather than the previously used J/cm 2 . Moreover, the previous recommendation indicating that lower energy densities (2.5, 5 and 8 J/cm 2 ) are more effective than 20 and 25 J/cm 2 is misleading.

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Evaluation of Low-Level Laser Therapy on Orthodontic Tooth Movement: A Randomized Control Study

Guram

Reddy²,

Dharamsi³

et al. 2018

Contemp Clin Dent

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Effect of Low-level Laser Therapy on Orthodontic Tooth Movement

Cited by 6 publications

References 0 publications

Effectiveness of photobiomodulation therapy in accelerating orthodontic tooth movement: a meta-analysis of randomized clinical trials.

Effectiveness of photobiomodulation therapy in accelerating orthodontic tooth movement: a meta-analysis of randomized clinical trials.

Effectiveness of low-level laser therapy in accelerating the orthodontic tooth movement: A systematic review and meta-analysis

Evaluation of Low-Level Laser Therapy on Orthodontic Tooth Movement: A Randomized Control Study

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