The purpose of this study is to quantitatively investigate the radiographic changes of alveolar bone, and gingival tissue changes of the mandibular anterior teeth in experimental group A receiving SFOT using freeze-dried allograft with a collagen membrane, experimental group B receiving SFOT using particulate xenograft covered by a collagen membrane and control group receiving only orthodontics therapy.
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Change in horizontal bone thickness at the 3mm point from Cementoenamel junction (CEJ) (crestal level) on the mandibular incisors
Timeframe: from baseline to endpoint (Alignment visit, approximately 4 months after the start of orthodontics treatment)
Change in horizontal bone thickness at the 6mm point from CEJ (middle level) on the mandibular incisors
Timeframe: from baseline to endpoint (Alignment visit, approximately 4 months after the start of orthodontics treatment)
Change in horizontal bone thickness at the 9mm point from CEJ (apical level) on the mandibular incisors
Timeframe: from baseline to endpoint (Alignment visit, approximately 4 months after the start of orthodontics treatment)
Change in volume of three dimensional bone
Timeframe: from baseline to endpoint (Alignment visit, approximately 4 months after the start of orthodontics treatment)
Change in volume of three dimensional soft tissue
Timeframe: from baseline to endpoint (Alignment visit, approximately 4 months after the start of orthodontics treatment)