Evaluation of wear resistance and bond strength between different teeth materials and Acrylic Denture base materials (Comparative in vitro study )

Document Type : Original Article

Author

Lecturer, Removable Prosthodontic Department, College of Oral and Dental Surgery, Misr University for Science and Technology, Giza Egypt.

Abstract

Background: This study aimed to compare the bond strength of an acrylic denture base with three types of artificial teeth materials: Nanohybrid composite artificial teeth (NHC), acrylic resin, and the PEEK denture teeth veneered with HIPC composite resin, and the wear resistance of these three types of denture teeth.
Methodology: Twenty-four bonded teeth were categorized into three groups. Group I: Acrylic resin teeth bonded to a conventional denture base. Group II: Nanohybrid composite teeth bonded to a conventional denture base. Group III: Polyether Ether Ketone core veneered with High-Impact Polymer Composite teeth bonded to a conventional denture base. Wear resistance and bonding strength between these teeth types and the acrylic resin denture base were evaluated.
Results: there was a significant difference between the three Groups after the wear stimulation test. Group III recorded the highest wear resistance followed by Group I and the lowest wear resistance was in Group II, Also there was a significant difference between the three Groups after a shear force was applied until samples debonded. The highest shear dislodgment force was recorded with Group I followed by Group II while the lowest shear dislodgment force was in Group III.
Keywords: Wear resistance, Bond strength, Teeth material, acrylic resin, denture base
Conclusion: Group I shows the highest bond strength with acrylic resin denture base and moderate wear resistance Group II shows moderate bond strength with acrylic resin and lowest wear resistance while Group III shows the highest wear resistance and the lowest bond strength.

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Egyptian Dental Journal
Volume 70, Issue 4 - Serial Number 4
Fixed Prosthodontics, Removable Prosthodontics and Dental Materials
October 2024
Pages 3451-3463

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