Comparative evaluation of different mechanical modifications of denture teeth on bond strength between high-impact acrylic resin and denture teeth: An in vitro study.
OBJECTIVE
Acrylic teeth separates from the denture base and remains a major worry in day-to-day routine dental procedure. The present study was conducted to comparatively evaluate different mechanical modifications of acrylic teeth on bond strength between Lucitone 199 heat cure resin and cross-linked teeth.


METHODS
The test specimens, central incisors (21) were demarcated into four groups. Group 1 was the control group, whereas Group 2, Group 3, and Group 4 were experimental groups modified with round groove, vertical groove, and T-shaped groove, respectively. The preparation of masterpiece was done by aligning the long axis of the central incisor teeth at 45° to the base of a wax block (8 mm × 10 mm × 30 mm), with ridge lap surface contacting the base. These test specimen (21) was prepared by Lucitone 199 heat cure resin. Evaluation of bond strength of all the specimens was done using universal tester (materials testing machine). Shapiro-Wilk Test, one-way analysis of variance (ANOVA), and Bonferroni test were done to do statistical investigation.


RESULTS
Group 1 specimens prepared by Lucitone 199 heat cure resin showed the lowest bond strength and Group 4 specimens prepared with T-shaped groove packed with Lucitone 199 exhibited the highest bond strength.


CONCLUSIONS
The bond strength between Lucitone 199 heat cure resin and cross-linked teeth was increased when mechanical modifications was done on denture teeth. The specimens prepared with T-shaped groove packed with Lucitone 199 heat cure resin showed the highest bond strength followed by Group 3, Group 2, and lastly Group 1 prepared by Lucitone 199 heat cure resin.
Department of Prosthodontics, Shree Guru Gobind Singh Tricentenary (SGT) Unversity, Gurgaon, Haryana, India.
Sumit Singh
SS
Phukela
Department of Prosthodontics, Shree Sai Dental College and Research Institute, Srikakulam, Andhra Pradesh, India.
Siddesh Kumar
SK
Chintalapudi
Department of Prosthodontics, RKDF Dental College and Research Centre, Bhopal, India.
Harleen
H
Sachdeva
Department of Prosthodontics, Himachal Institute of Dental Sciences, Paonta Sahib, Himachal Pradesh, India.
Rupinder Singh
RS
Dhall
Department of Prosthodontics, Modern Dental College and Research Centre, Indore, Madhya Pradesh, India.
Neeraj
N
Sharma
Department of Public Health Dentistry, College of Dental Sciences, Davangere, Karnataka, India.
Allama
A
Prabhu
Bond strength; T-shaped groove; round groove; vertical groove