Microbial Adhesion to Different Thermoplastic Denture Base Materials in Kennedy Class I Partially Edentulous Patients

Hassan M Sakr; Mahmoud R AbdulSalam; Mostafa I Fayad; Rania Moussa; Abdullah Ali H Alzahrani

doi:10.7759/cureus.60421

Microbial Adhesion to Different Thermoplastic Denture Base Materials in Kennedy Class I Partially Edentulous Patients

Cureus. 2024 May 16;16(5):e60421. doi: 10.7759/cureus.60421. eCollection 2024 May.

Authors

Hassan M Sakr^{1

2}, Mahmoud R AbdulSalam³, Mostafa I Fayad^{4

2}, Rania Moussa⁴, Abdullah Ali H Alzahrani⁵

Affiliations

¹ Department of Prosthodontic Dental Science, College of Dentistry, Al-Baha University, Al-Baha, SAU.
² Department of Removable Prosthodontics, Faculty of Dentistry, Al-Azhar University, Cairo, EGY.
³ Department of Prosthodontics, Faculty of Dentistry, Horus University, New Damietta, EGY.
⁴ Department of Substitutive Dental Science, College of Dentistry, Taibah University, Madinah, SAU.
⁵ Department of Dental Health, School of Applied Medical Sciences, Al-Baha University, Al-Baha, SAU.

Abstract

Introduction Since the polished and fitting surface of the denture base may promote the colonization of microorganisms, it is essential to know how the different types of denture bases prevent or encourage the adhesion of microorganisms. This study aimed to compare the microbial adhesion to the polished and fitting surfaces of thermoplastic nylon, thermoplastic acetal, and thermoplastic acrylic denture bases in Kennedy Class Ⅰ, partially edentulous patients. Materials and methods Thirteen patients were included in the study. The group consisted of eight males (61.54%) and five females (38.46%), with an age range of 41-50 years (mean age 46.1 years). Three types (groups) of removable partial dentures will be made for each patient using different thermoplastic denture base materials: thermoplastic nylon; thermoplastic acetal; and thermoplastic acrylic. The polished and fitting surfaces of the denture bases were swabbed after a one-month follow-up period. Microbial adhesion was evaluated by counting the microorganisms' colony-forming units (CFU) in the collected specimens. The data were collected and statistically analyzed. Results The study revealed no statistically significant difference in microbial adhesion to both polished and fitting surfaces between all types of studied thermoplastic denture base materials. However, the results showed that for the polished surface, the microbial adhesion median of thermoplastic acrylic denture base (40.5 CC x 10²/ml) was higher than that of thermoplastic acetal (29.0 CC x 10²/ml) and thermoplastic nylon (16.0 CC x 10²/ml). Regarding the fitting surface, the microbial adhesion median of thermoplastic acrylic (51.0 CC x 10²/ml) is higher than that of thermoplastic acetal (41.0 CC x 10²/ml) and thermoplastic nylon (23.0 CC x 10²/ml). Conclusion The thermoplastic nylon denture base materials showed less microbial adhesion among the studied thermoplastic materials, so it may be recommended to be used as a denture base material for individuals at high risk of denture stomatitis.

Keywords: denture base; kennedy’s class i; microbial adhesion; partially edentulous patients; thermoplastic material.