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This experimental study will evaluate the effect of combined treatment with low-level laser and functional appliances (twin-block) on the correction of Class II malocclusion, compared with the control group treated with functional appliances (twin-block) only.
The study sample will consist of 40 patients with Class II malocclusion. The sample will be allocated randomly into two groups: a control group and an experimental group.
Functional appliance (twin-block) will be applied for all patients. Low-level laser will be applied for the experimental group only. The skeleto-dental changes occurring after functional treatment will be assessed using cephalometric radiographs; pre- and post- treatment changes for each group will be evaluated individually.
Class II malocclusion is considered as the most common malocclusion between patients.
Recently low-level laser enters the world of dentistry, some studies assessed the effect of low-level laser on the growth of mandibles and condyles in animals and showed that there is a good effect of laser on the mandible growth.
This study will evaluate the effect of low-level laser on the growth of the mandible and the duration of functional treatment.
Twin-block will be applied in two groups: The control group will receive the twin-block only, and the experimental group will receive the twin-block combined with low-level laser therapy on the TMG region.
Cephalometric radiographs will be gotten before and after functional treatment to evaluate the dento-skeletal changes.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Twin-block group | Experimental | Functional treatment will be applied using the Twin-block appliance. |
|
| Twin-block combined with low level laser | Experimental | Functional treatment will be applied using the Twin-block appliance combined with low level laser. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Twin-block appliance | Device | Functional treatment will be achieved using the Twin-block appliance |
|
| Measure | Description | Time Frame |
|---|---|---|
| The duration of functional treatment | The duration of the functional treatment will be measured and compared between groups. | After functional treatment which will take approximately 8 months |
| Measure | Description | Time Frame |
|---|---|---|
| Dentoskeletal effects of the functional treatment | Dentoskeletal changes before and after functional treatment combined with Low-level Laser compared with those of the control group (SNA, SNB, ANB, Overjet ,…etc) using lateral cephalometric radiographs. | Changes will be evaluated before and after functional treatment which will take approximately 8 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Ahmad S Burhan, PhD. | Department of Orthodontics, Faculty of Dentistry, Damascus University, Damascus, Syria | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Damascus University | Damascus | 00963 | Syria |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 22361310 | Background | Abtahi M, Poosti M, Saghravanian N, Sadeghi K, Shafaee H. The effect of low level laser on condylar growth during mandibular advancement in rabbits. Head Face Med. 2012 Feb 23;8:4. doi: 10.1186/1746-160X-8-4. | |
| 20219584 | Background | Angeletti P, Pereira MD, Gomes HC, Hino CT, Ferreira LM. Effect of low-level laser therapy (GaAlAs) on bone regeneration in midpalatal anterior suture after surgically assisted rapid maxillary expansion. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Mar;109(3):e38-46. doi: 10.1016/j.tripleo.2009.10.043. |
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The Individual participant data will be only available for the researchers in the department of Orthodontics, Damascus University
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| ID | Term |
|---|---|
| D008312 | Malocclusion, Angle Class II |
| ID | Term |
|---|---|
| D008310 | Malocclusion |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
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| ID | Term |
|---|---|
| D028022 | Low-Level Light Therapy |
| ID | Term |
|---|---|
| D053685 | Laser Therapy |
| D013812 | Therapeutics |
| D010789 | Phototherapy |
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| Low level laser | Other | Functional treatment will be combined with low-level laser therapy on the TMG region |
|
| 25867096 | Background | Oksayan R, Sokucu O, Ucuncu N. The effects of low-level laser therapy on condylar growth with a mandibular advancement appliance in rats. Photomed Laser Surg. 2015 May;33(5):252-7. doi: 10.1089/pho.2014.3870. Epub 2015 Apr 13. |
| 19238504 | Background | Seifi M, Maghzi A, Gutknecht N, Mir M, Asna-Ashari M. The effect of 904 nm low level laser on condylar growth in rats. Lasers Med Sci. 2010 Jan;25(1):61-5. doi: 10.1007/s10103-009-0651-x. Epub 2009 Feb 24. |