[Clinical study of Vitallium removable partial denture with dual major connector in Kennedy Ⅰ and Ⅱ dentition defect]

To study the clinical effect of Vitallium removable partial denture (RPD) with dual major connector (DMC) in rehabilitation of Kennedy Ⅰ and Ⅱ dentition defect.

A total of 30 patients with Kennedy Ⅰ and Ⅱ dentition defect fitting to the inclusion criteria were selected and restored with Vitallium RPD with DMC. Patients were re-called at the 6th and 12th month for clinical follow-up examination of gingival index (GI), abutment teeth mobility (TM), X-ray imaging, probing depth (PD) and satisfaction surveys. Then the differences of each index were analyzed with SPSS 18.0 software package.

GI, TM and X-ray features of free-end abutment teeth in 30 clinical cases had no obvious changes either at the early 6-month or at the later 12-month, and PD had no significant difference, either (F=0.0046, P=0.9954). Satisfaction surveys showed high satisfaction, especially in the respects of aesthetics (93.33％) and comfort (86.67％).

From this study, it is concluded that Vitallium RPD with DMC have certain protective effect on the free-end abutment teeth, especially with the poor periodontal condition. It also shows high rate of patients' satisfaction. Therefore, it can be used as one of the common designs of RPD in cases of free-end dentition defect.