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The aims of this study will be to evaluate if a Lower Level Laser Therapy (LLLT): (1) enhances the levels of important pro-inflammatory chemokines involved in the bone remodeling process; (2) increases the rate of orthodontic tooth movement (OTM) on human subjects.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Low-level laser therapy and no orthodontic force | Experimental | No orthodontic force. Laser is applied on the first day and the premolars is extracted after 24 hours |
|
| Low-level laser therapy and application of orthodontic force | Experimental | Orthodontic force and Laser is applied on the first day and the premolars is extracted after 24 hours |
|
| Orthodontic force only | Active Comparator | Orthodontic force is applied and the premolars is extracted after 24 hours, with no laser therapy |
|
| Low-level laser therapy and orthodontic force | Experimental | Orthodontic force and Laser is applied and the orthodontic tooth movement is evaluated |
|
| Orthodontic force with no laser therapy | Active Comparator | Orthodontic force is applied and the orthodontic tooth movement is evaluated, with no laser therapy |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Low-level Laser Therapy | Device | Low-level laser therapy is applied on premolars that will be extracted for treatment plan reasons |
|
| Measure | Description | Time Frame |
|---|---|---|
| Rate of orthodontic tooth movement, with and without low-level laser therapy | The canine retraction was measured with a digital dynamometer | The quantification of OTM was performed before canine retraction |
| Rate of orthodontic tooth movement, with and without low-level laser therapy | The canine retraction was measured with a digital dynamometer | The quantification of OTM was performed after 1 month of canine retraction |
| Rate of orthodontic tooth movement, with and without low-level laser therapy | The canine retraction was measured with a digital dynamometer | The quantification of OTM was performed after 2 months of canine retraction |
| Rate of orthodontic tooth movement, with and without low-level laser therapy | The canine retraction was measured with a digital dynamometer | The quantification of OTM was performed after 3 months of canine retraction |
| Measure | Description | Time Frame |
|---|---|---|
| Chemokine levels in the periodontal tissue after LLLT and orthodontic force | The chemokine levels were measured in the periodontal tissue after LLLT and orthodontic force by means of a cytometric bead array (CBA) | The chemokine levels were assayed on days 0, 1, 7 and 14 after application of orthodontic force and low-level laser therapy |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Pontifical Catholic University of Minas Gerais | Belo Horizonte | Minas Gerais | 30535-901 | Brazil |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 22381489 | Background | Doshi-Mehta G, Bhad-Patil WA. Efficacy of low-intensity laser therapy in reducing treatment time and orthodontic pain: a clinical investigation. Am J Orthod Dentofacial Orthop. 2012 Mar;141(3):289-297. doi: 10.1016/j.ajodo.2011.09.009. | |
| 10505748 | Background | Alhashimi N, Frithiof L, Brudvik P, Bakhiet M. Chemokines are upregulated during orthodontic tooth movement. J Interferon Cytokine Res. 1999 Sep;19(9):1047-52. doi: 10.1089/107999099313271. |
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| ID | Term |
|---|---|
| D028022 | Low-Level Light Therapy |
| ID | Term |
|---|---|
| D053685 | Laser Therapy |
| D013812 | Therapeutics |
| D010789 | Phototherapy |
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| Orthodontic force | Procedure | Mechanical loading is applied on premolars that will be extracted for treatment plan reasons and in canines for tooth movement |
|
| 23883115 | Background | Torri S, Weber JB. Influence of low-level laser therapy on the rate of orthodontic movement: a literature review. Photomed Laser Surg. 2013 Sep;31(9):411-21. doi: 10.1089/pho.2013.3497. Epub 2013 Jul 24. |
| 22350425 | Background | Genc G, Kocadereli I, Tasar F, Kilinc K, El S, Sarkarati B. Effect of low-level laser therapy (LLLT) on orthodontic tooth movement. Lasers Med Sci. 2013 Jan;28(1):41-7. doi: 10.1007/s10103-012-1059-6. Epub 2012 Feb 18. |
| 19639625 | Background | Kim SJ, Moon SU, Kang SG, Park YG. Effects of low-level laser therapy after Corticision on tooth movement and paradental remodeling. Lasers Surg Med. 2009 Sep;41(7):524-33. doi: 10.1002/lsm.20792. |