Influence of Powerscope appliance on the spatial position of the mandible heads in mandibular fossae

Vol. 12 – Number 47 – 2019 Case report Page 61-71 Influence of Powerscope appliance on the spatial position of the mandible heads in mandibular fossae Andrea Erica Bono¹ Maria Monica Beti² Juan Pablo Cacioli³ Abstract Class II correction and its different variables have been addressed through different procedures. The fixed functional hybrid appliances are an alternative in the treatment of Class II malocclusion with mandibular deficiency. Within this classification, the PowerScope™ represents a hybrid functional device with a fixed mechanism, easy to install and simple clinical management, which does not require a laboratory phase and it doesn´t require a high degree of patient collaboration. Materials and methods: 12 years female patient of age, brachifacial. Skeletal Class II with an advanced position of the upper jaw, and with decrease of the face lower third. In the initial studies, the Ricketts articular cephalogram was performed to determine the initial and final position, post-correction of Class II, using the PowerScope™ American Orthodontic device, Sheboygan, Wisconsin, USA. Discussion: The efficiency of hybrid fixed functional appliances, in the correction of Class II is satisfactory. Within the action mechanism there is a great controversy between different researches. PowerScope™ device was efficient in the correction of Class II malocclusion. We found that the Class II correction was mainly dentoalveolar, the upper molar distalization, lower molar mesialization and lower incisors protrusion, with some slight significant changes in the skeletal and soft tissue parameters. Conclusion: During the active treatment, and after the correction of Class II malocclusion with the use of PowerScope™, the acceptable relationship of the condyle with the glenoid cavity and joint eminence was maintained, with respect to the initial position, corroborated radiographically with the laments and the cephalometric study of Rickets Descriptors: Powerscope, temporomandibular joint, Class II. ¹ Especialista em Ortodontia e ATM, Professora Titular – Facultad de Odontologia – UNLP., Doutora em Odontologia. ² Especialista em Ortodontia e Odontopediatria, Professora de Ortodontia – Facultad de Odontologia – UNLP. ³ Especialista em Ortodontia e Odontopediatria, Chefe dos Residentes – Hospital Bollini La Plata.   Prezado Assinante, Este artigo estará disponível para download em Janeiro de 2020.