Comparação entre os resultados oclusais e os tempos de tratamento da má oclusão de Classe II por meio da utilização do aparelho Pendulum e das extrações de dois pré-molares superiores

Abstract

Objectives: The purpose of this study was to compare the occlusal outcomes and the treatment time of Class II malocclusion with the Pendulum appliance and with two maxillary premolar extractions. Methods: For this, 48 Class II malocclusion patients were selected and divided into two groups according to the treatment protocol: group 1 consisted of dental study casts and initial cephalograms of 22 patients treated with the Pendulum appliance, with an initial mean age of 14.44 years and group 2, comprised of dental study casts and initial cephalograms of 26 patients treated with two maxillary premolar extractions and a initial mean age of 13.66 years. The occlusal outcomes were evaluated on dental casts with the PAR occlusal index and the treatment time of each group was calculated by the clinical records. The variables were compared by the t tests. Results and conclusions: The results demonstrated that the occlusal outcomes were similar between the groups, however, the two maxillary premolar extractions protocol provided occlusal outcomes in a shorter treatment time than the Pendulum treatment. AbstractKeywords: Class II. Pendulum. Extractions. Distalization.

Orthodontic Protocol Using Mini-Implant for Class II Treatment in Patient with Special Needs

“…Conventional intraoral distalizers take an average of 4–7 months to achieve molar Class I [23], although the literature imposes that the protocol of extraction of two upper premolars is faster than distalization to correct Class II [23]. The use of the pendulum device supported in mini-implants showed efficiency in correcting this malocclusion in a reduced time with satisfactory occlusal results and interesting biological cost, considering the limitations of the patient exposed.…”