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Acrylic resin versus metal palatal base in complete dentures: A randomized crossover clinical trial of
Motasum Abu-Awwad1, Laila Hailkal1, Mohammad Bustani1
1Prosthodontics Department, University of Jordan School of Dentistry, Amman, Jordan.
Purpose:
To compare the effects of acrylic resin and metal palatal bases in complete dentures on patient satisfaction and quality of life.
Materials And Methods:
This randomized, two-period crossover clinical trial involved 30 edentulous participants. Each received complete dentures with either an acrylic resin or a metal palatal base, followed by the alternative after 2 months. Participant satisfaction was assessed using a visual analog scale, and quality of life was evaluated via the Oral Health Impact Profile for Edentulous Patients (OHIP-EDENT). The Wilcoxon signed-rank test and effect size (ES) analyze satisfaction ratings and OHIP-EDENT scores. Regression analysis was conducted to identify predictors of general satisfaction and OHIP-EDENT scores. Fisher's exact test assessed the association between denture wearing experience and material preference.
Results:
Of the 30 participants, 25 completed the study (48% first-time wearers, 52% experienced wearers). No statistically significant differences were found for general satisfaction (p = 0.386), eating (p = 0.292), taste (p = 0.775), speech (p = 0.497), phonetics (p = 0.570), cleaning (p = 0.905), palate design (p = 0.773), or OHIP-EDENT score (p = 0.381). Phonetics demonstrated a moderate ES (r = 0.38) in favor of metal bases. Other domains had small ES (r = 0.02-0.21). Metal bases were associated with increased embarrassment (p = 0.034, r = 0.42). Regression analyses revealed no significant predictors of general satisfaction (p = 0.397) or OHIP-EDENT scores (p = 0.685). First-time wearers tended to prefer acrylic resin bases; experienced wearers were evenly divided (p = 0.097).
Conclusion:
Both acrylic resin and metal palatal bases yielded comparable satisfaction and quality of life outcomes. However, metal bases caused more embarrassment. Material preference appeared to vary based on prior denture-wearing experience.
