Estudo comparativo entre os propulsores mandibulares Forsus e PowerScope

• Ano de defesa: 2018
• Autor(a) principal: Barros Junior, Tadeu Vieira de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Positivo; Brasil; Pós-Graduação; Programa de Pós-Graduação em Odontologia Clínica; UP
• Palavras-chave em Português: Odontologia; Oclusão dentária; Descompressão cirúrgica; Teste de materiais; CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
• Link de acesso: https://repositorio.cruzeirodosul.edu.br/handle/123456789/2235

Controlling the level of forces released by the appliances during orthodontic treatment is important to ensure treatment efficiency and minimize side effects. The objective of this work was to compare the forces of loading and unloading released by the Forsus and Powerscope devices. Two groups of devices - Group F (Forsus; n = 12) and Group P (Powerscope; n = 12) - underwent loading and unloading tests after being immersed in artificial saliva for 5 minutes. The devices were loaded to the maximum point of loading (Group F 12 mm, Group P 4 mm) and unloaded at the rate of 0.1 mm per second. The amount of forces released by each device was recorded at intervals of 0.5 mm. Data were analyzed using Student's t-test (p <0.05). Group F had on average 111.79 g of loading force and 90.58 g of unloading force (variation of 22.21 g). Group P presented on average 203.5 g of loading force and 140.87 g of unloading force (variation of 62.63 g). There was no significant difference between loading and stiffness for both Group F (p = 0.070) and Group P (p = 0.143). Group P presented higher loading stiffness (p <0.001) and unloading (p <0.001) compared to Group F. Powerscope released more force than Forsus. However, Forsus lost less force during unloading. When comparing the characteristics between them, we can conclude that the spring of the Powescope is stiffer and less resilient than that of the Forsus.