Effect of Recall Interval on Abutment Tooth Failure in Distal-Extension Removable Partial Dentures
Abutment Tooth Failure in Distal-Extension Removable Partial Dentures
Keywords:
abutment tooth, removable partial denture, distal-extension removable partial denture, recall, maintenanceAbstract
Distal-extension removable partial dentures (RPDs) are time-efficient, cost-effective and uncomplicated treatment option for partially edentulous patients, particularly elderly. However, there is limited evidence regarding the impact of recall interval on abutment tooth failure. This retrospective study aimed to evaluate the impact of recall interval, clinical attachment loss, and occlusal types on abutment tooth risk of retainer failure in distal-extension RPDs. Data were collected from 515 abutment teeth of distalextension RPDs in patient records at the Department of Advanced General Dentistry, Faculty of Dentistry, Mahidol University. The study defined abutment tooth failure based on the following conditions: tooth extraction, new carious lesions, replacement of restorations, root canal treatment or retreatment, and progression of periodontal disease. The findings revealed that 21.7% of the abutment teeth experienced failure. The interval between follow-up visits significantly affected the abutment tooth failure with distalextension removable partial dentures (p < 0.001). The group that was not followed up had the highest rate of abutment tooth failure, followed by the group with a follow-up period longer than 6 months. Patients without recall visits had a nearly tenfold higher risk of abutment failure than those with recall intervals of 6 months (adjusted HR = 9.26). These results underscore that regular follow-up are crucial for maintaining the health and longevity of abutment teeth in patients with distal-extension RPDs
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