Evaluation of Two Denture Base Material on the Supporting Structures of Mandibular Tooth Supported Over Denture

Document Type : Original Article


1 Demonstrator at prosthodontics Department, Faculty of Dental Medicine For Girls, Al-Azhar University, Cairo, Egypt

2 Professor of Removable Prosthodontics, Faculty of Dental Medicine for Girls, AL-Azhar University, Cairo, Egypt


Purpose: To compare the effect of thermoplastic resin and heat cured acrylic resin
denture base materials on pocket depth and bone height around two mandibular canines
supporting mandibular tooth supported over denture. Subject and Methods: Ten
patients having completely edentulous maxillary ridge and bilateral canine in the lower
arch were selected. Root canal treatment and preparation were performed to obtain
non coping abutment with amalgam plugs that covered with over denture. Maxillary
complete dentures were constructed for all patients. Patients were divided into two equal
groups. Group I: received thermoplastic mandibular over denture. Group II: received
conventional heat cure acrylic resin mandibular over denture. Clinical and radio
graphic evaluation were performed at denture insertion , after 6month and after 9month
for both mandibular over denture. Results: Statistical analysis of bone height showed
that group I (thermoplastic denture) has less bone resorption than group II (acrylic
denture) which was statically significant. Statistical analysis of change in pocket depth
showed that group I (thermoplastic denture) has less change in the pocket depth than
group II (acrylic denture) which was not statistically significant. Conclusion: Within
the limitation of this study thermoplastic over denture preserved pocket depth and bone
height more than conventional heat cured acrylic resin.


Main Subjects

Volume 10, Issue 2
Issue2 April-Restorative Dentistry issue (Removable Prosthodontics, Fixed Prosthodontics, Endodontics, Dental Biomaterials, Operative Dentistry)
April 2023
Pages 309-315