The Effect of Flexible Acrylic Resin Lingual Flanges on The Retention of Mandibular Complete Dentures

Document Type : Original Article

Authors

1 Demonstrator of Removable Prosthodontics, Faculty of Dental Medicine for Girls, Al-Azhar University.

2 Professor of Removable Prosthodontics, Faculty of Dental Medicine for Girls, Al-Azhar University.

3 Professor of Removable Prosthodontics, Faculty of Dental Medicine for Girls, Al-Azhar University

Abstract

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Purpose:
To evaluate the effect of flexible lingual flanges on the retention of conventional mandibular complete denture.  
Material and methods:
Ten completely edentulous patients were selected for this study with ages ranged from 50-60 years. All patients had received heat cured acrylic resin denture without modification (Group І) then heat cure lingual flanges were removed and replaced by flexible lingual flanges (Group ІІ). All patients were instructed to use their resin dentures for equal periods of three months when retention of denture base were measured after one month and at the end of three months, period of two week interval was left between each group as a washing period.
Results:
The results of this study showed that there was a significant difference between them, as the flexible lingual flanges (group ІІ) was better than the heat cured acrylic resin denture base (group І).  
Conclusion:
Within the limitation of this study, it was concluded that retention of the mandibular denture modified with flexible acrylic resin “versacryl” was higher than that of the conventional heat cured acrylic resin denture. Retention was increased by time in each study group. The use of flexible acrylic resin in mandibular complete dentures (as lingual flange) could be considered as an alternative effective treatment

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