IADR Abstract Archives
Masticatory Performance With Magnet Retained Mandibular Two Implant Overdentures
Objectives: The aim of this three-year study was to compare masticatory performance between immediate and conventional loading mandibular two-implant overdentures retained by magnetic attachments.
Methods: The study design was a randomized controlled clinical trial. Nineteen mandibular edentulous patients were randomly allocated into two groups: immediate loading or conventional loading group. Each patient received two implants with magnetic attachments. The immediate loading group were loaded on the same day as implant surgery while the conventional loading group were loaded on three months after implant surgery. Masticatory performance was evaluated using two types of methods. A color-changeable chewing gum was used to evaluate mixing ability and a test gummy jelly was used to evaluate comminution ability. Masticatory performance was recorded at baseline and 1, 3, 6, 12, 24, 36 months after implant surgery. The difference in both of mixing ability and comminution ability between before and after implantation was compared by Wilcoxon signed-rank test. Also, the difference between baseline scores and each time of assessment score for the immediate loading and conventional loading groups were compared using the Mann–Whitney U test.
Results: The data from each of seven patients in the immediate loading and the conventional loading group were analyzed. Comminution ability of the immediate loading group showed significantly better than the conventional loading group at 12 months after implant surgery whereas there was no significant difference in mixing ability between the two groups at any time of assessment. Moreover, each of the group showed significant improvement in mixing ability and comminution ability for three years after implant surgery.
Conclusions: There was hardly significant difference in masticatory performance between immediate and conventional loading mandibular two-implant overdentures retained by magnetic attachments. However, each of the mandibular two-implant overdentures with magnetic attachments showed significant improvement in masticatory performance when compared to complete denture.
Methods: The study design was a randomized controlled clinical trial. Nineteen mandibular edentulous patients were randomly allocated into two groups: immediate loading or conventional loading group. Each patient received two implants with magnetic attachments. The immediate loading group were loaded on the same day as implant surgery while the conventional loading group were loaded on three months after implant surgery. Masticatory performance was evaluated using two types of methods. A color-changeable chewing gum was used to evaluate mixing ability and a test gummy jelly was used to evaluate comminution ability. Masticatory performance was recorded at baseline and 1, 3, 6, 12, 24, 36 months after implant surgery. The difference in both of mixing ability and comminution ability between before and after implantation was compared by Wilcoxon signed-rank test. Also, the difference between baseline scores and each time of assessment score for the immediate loading and conventional loading groups were compared using the Mann–Whitney U test.
Results: The data from each of seven patients in the immediate loading and the conventional loading group were analyzed. Comminution ability of the immediate loading group showed significantly better than the conventional loading group at 12 months after implant surgery whereas there was no significant difference in mixing ability between the two groups at any time of assessment. Moreover, each of the group showed significant improvement in mixing ability and comminution ability for three years after implant surgery.
Conclusions: There was hardly significant difference in masticatory performance between immediate and conventional loading mandibular two-implant overdentures retained by magnetic attachments. However, each of the mandibular two-implant overdentures with magnetic attachments showed significant improvement in masticatory performance when compared to complete denture.