Three-dimensional Judgment of Mandibular Condylar Volume and Position Subsequent to Twin-block Functional Therapy of Skeletal Class II Malocclusion Accompanied With Low-level Laser Therapy
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- Changes of condylar volume (mm3) and condylar head position before and after Twin-block therapy with and without LLLT:
研究概览
简要总结
to evaluate effect of low-level laser therapy (LLLT) on mandibular condylar volume and position after treatment of Class II malocclusion with Twin Block (TB) functional therapy via cone beam computed tomography (CBCT).
Materials and methods: Twenty eight growing patients, 14 boys and 14 girls ranged in age 9-12 years, were randomly divided into control group (mean initial age 10.64±1.36 years) and laser group (mean initial age 10.55 1.45 years). All patients treated with TB appliance where Gallium aluminum arsenide diode laser applied in one group weekly around TMJ region for 12 sessions in three months with set parameters: continuous 635 nm, 50 mW, 4.5J/cm2, 45 seconds/ point, total dose per side 11.25J. CBCT were obtained before and immediately after TB therapy, in addition to routine orthodontic records. Changes in TMJ and skeletal variables were analyzed and compared within and between both groups.
详细描述
to evaluate the effect of low-level laser therapy (LLLT) on mandibular condylar volume and position after treatment of Class II malocclusion with Twin Block (TB) functional therapy via cone-beam computed tomography (CBCT).
Materials and methods
Twenty-eight growing patients, 14 boys, and 14 girls ranged in age 9-12 years, were randomly divided into control group (mean initial age 10.64±1.36 years), and laser group (mean initial age 10.55 1.45 years). All patients treated with TB appliance where Gallium aluminum arsenide diode laser applied in one group weekly around TMJ region for 12 sessions in three months with set parameters: continuous 635 nm, 50 mW, 4.5J/cm2, 45 seconds/ point, total dose per side 11.25J. CBCT were obtained before and immediately after TB therapy, in addition to routine orthodontic records. Changes in TMJ and skeletal variables were analyzed and compared within and between both groups.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 9 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Skeletal Class II (ANB°> 5°) with the normal maxilla (SNA°=82°±4°) and retrognathic mandible (SNB°< 78°).
- •Overjet greater than 5 mm.
- •Minimal crowding in dental arches (≤ 3 mm).
- •The lower incisors should be on average inclination or slightly retroclined.
- •All the patients were in stages II and III based on the modified cervical vertebral maturation stages(CVMS) according to Bacetti et al.
排除标准
- •Previous history of orthodontic treatment.
- •Congenitally missing or extracted permanent tooth (except third molars).
- •Posterior crossbites or severe maxillary transverse deficiency.
- •Severe facial asymmetry determined by clinical or radiographic examination.
- •Poor oral hygiene.
- •Systemic diseases that may affect orthodontic treatment results.
研究组 & 干预措施
control group
12 patients treated with twin block functional appliance without low-level laser application for 9 month
laser group
12 patients treated with twin block functional appliance with low-level laser application with the following set parameters; 635 nm wavelength in continuous-wave mode, 50 mw power output, 4.5 J/cm2 energy density, 11.25 J total dose per side, 45 seconds/ point, and 8 mm fiber optic tip diameter. The laser was applied at five points located within TMJ region on both right and left sides in contact with skin as follows: lateral, superior, anterior, posterior, and posterior- inferior points. Laser application was repeated weekly for three months according to a standard protocol
干预措施: low level laser therapy (Radiation)
结局指标
主要结局
Changes of condylar volume (mm3) and condylar head position before and after Twin-block therapy with and without LLLT:
时间窗: after 9 mouth from starting treatment
3D condylar volume measured using software and 2D condylar head position
次要结局
- Changes of cephalometric skeletal measurements before and after Twin-block therapy with and without LLLT(after 9 mouth from starting treatment)
研究者
mahmoud abdelhameed mohamed
Dentist, Ministry of Health, Egypt, MSc studentDepartment of Orthodontics, Faculty of Dental Medicine (Boys), Al-Azhar University, Cairo, Egypt.
Al-Azhar University