# Correlation between retention and masticatory ability of magnetic attachment overdenture in elderly patients

## TL;DR

This study finds that magnetic attachment overdentures improve chewing ability and retention in elderly patients with tooth defects.

## Contribution

The study demonstrates a positive correlation between magnetic attachment overdenture retention and improved masticatory efficiency in elderly patients.

## Key findings

- Magnetic attachment overdentures showed higher bite force, retention, and masticatory efficiency compared to other methods.
- Group A had better gingival and bleeding indices but higher plaque in group B.
- Masticatory efficiency was positively correlated with retention and repair effectiveness (r=0.320, 0.398).

## Abstract

To explore the correlation between restoration and retention of magnetic attachment overdenture and masticatory ability in elderly patients.

200 elderly patients with most defects of dentition undergoing denture repair were selected, and with magnetic attachment retention repair in group A (n=70), with Taiji buckle attachment denture retention repair in group B (n=65), with removable partial denture repair in group C (n=65). The masticatory ability, abutment related indexes and the incidence of denture repair related complications in the three groups were compared, and the masticatory efficiency of patients with different magnetic attachment retention and repair effects before and after treatment was compared.

The bite force, retention and masticatory efficiency of group A were higher than group B and C (P<0.05). After treatment, gingival index, bleeding index and mobility in group A were higher than group B and C, plaque index in group B were higher than group A and C (P<0.05). The masticatory efficiency of patients with good retention and repair effect of magnetic attachment before and after treatment of patients with general effect were better than patients with poor effect and there was a positive correlation (r=0.320, 0.398, P<0.05).

Magnetic attachment overdenture is effective and safe in most elderly patients with dentition defects.