Clinical trial NCT03239912: Treatment of Class II Malocclusion Combined With Low-level Laser
Official title: The Effects of Combined Treatment With Low-level Laser and Functional Appliances on the Correction of Class II Malocclusion: A Randomized Controlled Trial
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Malocclusion, Angle Class II
Keywords: Low-level laser
functional treatment
twin-block
RCT
Lead sponsor: Damascus University
Sponsor class: OTHER
First posted: 2017-08-04
Enrollment: 40
Sex: ALL
Minimum age (years): 11
Maximum age (years): 14
Standard ages: CHILD
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: 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.

Detailed description: 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.

Eligibility criteria: Inclusion Criteria:

* Skeletal Class II malocclusion because of mandibular retrognathia
* ANB \> 4
* Overjet \> 5
* SNB \< 78

Exclusion Criteria:

* Poor oral hygiene
* Previous orthodontic treatment.
* Patients with syndromes, clefts, or craniofacial abnormalities.
* Reason of contraindication of functional treatment

Primary outcomes:
measure: The duration of functional treatment
timeFrame: After functional treatment which will take approximately 8 months
Secondary outcomes:
measure: Dentoskeletal effects of the functional treatment
timeFrame: Changes will be evaluated before and after functional treatment which will take approximately 8 months
Other outcomes:
Locations:
city: Damascus
country: Syrian Arab Republic
facility: Damascus University
Study officials:
affiliation: Department of Orthodontics, Faculty of Dentistry, Damascus University, Damascus, Syria
name: Ahmad S Burhan, PhD.
role: STUDY_CHAIR
References:
citation: 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.
citation: 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.
citation: 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.
citation: 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.