A.T. Still University Missouri School of Dentistry & Oral Health Fenton, Missouri, United States
Author: Romana Muller, RDH, M.S.D.H. – A.T. Still University Missouri School of Dentistry & Oral Health Author: Julianne Phan, Student Doctor Dentist – A.T. Still University Missouri School of Dentistry & Oral Health Author: Rebecca La, Student Doctor Dentist – A.T. Still University Missouri School of Dentistry & Oral Health Author: Grant Coleman, Student Doctor Dentist – A.T. Still University Missouri School of Dentistry & Oral Health Author: Phu Vuong, D.M.D. – A.T. Still University Missouri School of Dentistry & Oral Health Author: Silman Sayage, D.M.D. – A.T. Still University Missouri School of Dentistry & Oral Health Author: Paul Aubrey, D.D.S. – A.T. Still University Missouri School of Dentistry & Oral Health Submitter: Romana Muller, RDH, M.S.D.H. – A.T. Still University Missouri School of Dentistry & Oral Health
Objectives: To assess the impact of confounding factors in bivariate relationships between removable partial dentures and periodontal health of abutment teeth in patients attending a dental school clinic.
Methods: Data of patients who received removable partial dentures (RPD) between 2015 and 2019 were collected from electronic dental records (EDR). Changes in periodontal health metrics of abutments were determined by comparing average periodontal pocket depths (PD), recession, and mobility. Changes for RPD type and periodontal treatment (PT) occurrence were estimated, controlling for time elapse. Records of patients not returning for periodontal maintenance (PM) after RPD delivery were excluded. The study proposal was deemed exempt by A.T. Still University’s Institutional Review Board.
Results: 567 records were reviewed and 103 patients receiving 131 RPD were included in the analysis. PT occurred in 82% (108/131) of the cases. For PD, recession, and CAL, none of the RPD types with or without PT showed significant change (all P >.05). For recession, cast metal RPD with PT showed a near significant increase (0.19mm [95% CI, 0.00 to 0.37]; P=.05). For mobility, patients with resin base RPD without PT increased (0.35 [95% CI, 0.05 to 0.65]; P=.03) and no other groups showed a change (all P >.16). After adjusting for PT and time, recession change was significantly greater for cast metal compared to resin base RPD (P=.049), and no difference was found in other metrics (all P>.47).
Conclusion: No significant changes in PD or recession were found. Significant increase found in the mobility of abutments in patients with resin-based RPDs, without PT. RPD recipients should receive PT to reduce the risk of increased mobility of abutments.
