AIM: To prospectively assess the dentoskeletal effects of comprehensive fixed appliance treatment combined with the Forsus fatigue resistant device (FRD) in Class II patients. SUBJECTS AND METHOD: Fifty-four patients (27 females, 27 males) with a Class II malocclusion treated consecutively with the FRD protocol. Lateral cephalograms were taken before therapy (T1, mean age 12.5 ± 1.2 years), before the application of the FRD (T2, mean age 13.6 ± 1.1 years), at the removal of the FRD (T2, mean age 14.1 ± 1.1 years), and at the completion of comprehensive therapy (T4, mean age 14.8 ± 1.1 years). The mean duration of the levelling and aligning phase with fixed appliances (T1-T2 interval) was 1.1 ± 0.4 years. The mean duration of treatment with the FRD (T2-T3 interval) was 0.5 ± 0.1 years while the mean duration of comprehensive treatment (T1-T4 interval) was 2.3 ± 0.4 years. Statistical comparisons were carried out with repeated measures ANOVA with Tukey’s post-hoc tests (P < 0.05). RESULTS: The FRD protocol induced a significant restraint in the sagittal skeletal position of the maxilla (SNA –0.6°), a significant mandibular advancement (Pog to N Perpendicular +1.5 mm) and a significant improvement in maxillomandibular sagittal skeletal relationships (Wits –1.8 mm). At the dentoalveolar level a significant reduction in overjet (–4.1 mm) and overbite (–3.0 mm) and a significant improvement in molar relationship (+3.5 mm) were found. The lower incisors were significantly proclined (L1 to mandibular plane +6.2), while the lower first molars moved significantly in a mesial direction (+2.6 mm). The greatest contributions to these significant skeletal and dentoalveolar T1-T4 changes occurred during active treatment with the FRD (T2-T3 interval). CONCLUSION: The FRD protocol is effective in correcting Class II malocclusions in growing patients with a combination of skeletal (maxillary and mandibular) and dentoalveolar (mainly mandibular) modifications.
Treatment effects induced by a fatigue resistant device combined with fixed appliances in Class II growing patients / C. Masucci; L.T. Huanca Ghislanzoni; G. Cacciatore; E. Defraia. - STAMPA. - Abstract Book, 88th EOS Congress, Santiago de Compostela, Spain:(2012), pp. 48-48. (Intervento presentato al convegno European Orthodontic Society tenutosi a Santiago de Compostela, Spagna nel 18-23 giugno 2012).
Treatment effects induced by a fatigue resistant device combined with fixed appliances in Class II growing patients
DEFRAIA, EFISIO
2012
Abstract
AIM: To prospectively assess the dentoskeletal effects of comprehensive fixed appliance treatment combined with the Forsus fatigue resistant device (FRD) in Class II patients. SUBJECTS AND METHOD: Fifty-four patients (27 females, 27 males) with a Class II malocclusion treated consecutively with the FRD protocol. Lateral cephalograms were taken before therapy (T1, mean age 12.5 ± 1.2 years), before the application of the FRD (T2, mean age 13.6 ± 1.1 years), at the removal of the FRD (T2, mean age 14.1 ± 1.1 years), and at the completion of comprehensive therapy (T4, mean age 14.8 ± 1.1 years). The mean duration of the levelling and aligning phase with fixed appliances (T1-T2 interval) was 1.1 ± 0.4 years. The mean duration of treatment with the FRD (T2-T3 interval) was 0.5 ± 0.1 years while the mean duration of comprehensive treatment (T1-T4 interval) was 2.3 ± 0.4 years. Statistical comparisons were carried out with repeated measures ANOVA with Tukey’s post-hoc tests (P < 0.05). RESULTS: The FRD protocol induced a significant restraint in the sagittal skeletal position of the maxilla (SNA –0.6°), a significant mandibular advancement (Pog to N Perpendicular +1.5 mm) and a significant improvement in maxillomandibular sagittal skeletal relationships (Wits –1.8 mm). At the dentoalveolar level a significant reduction in overjet (–4.1 mm) and overbite (–3.0 mm) and a significant improvement in molar relationship (+3.5 mm) were found. The lower incisors were significantly proclined (L1 to mandibular plane +6.2), while the lower first molars moved significantly in a mesial direction (+2.6 mm). The greatest contributions to these significant skeletal and dentoalveolar T1-T4 changes occurred during active treatment with the FRD (T2-T3 interval). CONCLUSION: The FRD protocol is effective in correcting Class II malocclusions in growing patients with a combination of skeletal (maxillary and mandibular) and dentoalveolar (mainly mandibular) modifications.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
