Comparative Evaluation of Denture Retention Using Three Border Moulding Techniques: A Non Randomised Clinical Study

Abstract

Introduction: In complete dentures, the final impression plays a pivotal role in the success of the treatment. Advancements in impression materials have been the primary influence on the evolution of complete denture impression procedures. Aim: To compare and evaluate the retention of complete dentures fabricated on resorbed ridges using three different border moulding techniques. Materials and Methods: This non randomised clinical study was conducted in the Department of Prosthodontics and Crown and Bridge at KVG Dental College and Hospital, Sullia, Karnataka, India. The study included 10 patients with resorbed ridges who sought treatment from the Department of Prosthodontics during the period from January 2022 to December 2023. The study participants were selected from Dakshina Kannada and Kasargod, aged between 40 to 70 years, and included both males and females. For each patient, three custom trays were fabricated. The first tray was used for border moulding with putty and light body impression paste recorded using a Transcutaneous Electrical Stimulation (TENS) machine (Group A). The second tray was used for border moulding with putty and light body impression paste (Group B), while the third tray utilised a tissue conditioner as the secondary impression material (Group C). Retention was checked using a force gauge after the secondary impression, and heat-cured dentures were fabricated for each patient. The retention values were statistically analysed using Analysis of Variance (ANOVA), with the significance level set at p≤0.05. Results: The measurements indicated significantly higher mean retentive values in Group-A (2.58±0.56 kgf and 2.49±0.99 kgf for the secondary impression and final denture, respectively) compared to the other two groups (p<0.001). Comfort was reported to be better in Group-B. Both Groups A and B exhibited a good fit for the dentures. Conclusion: Within the limitations of the study, it can be inferred that border moulding with TENS using polyvinyl siloxane putty and light body secondary impressions provided higher retention compared to functional border moulding using tissue conditioner.

Keywords

• digital force gauge
• secondary impression
• transcutaneous electrical stimulation
• tissue conditioner