Comparative evaluation of different mechanical modifications of denture teeth on bond strength between high-impact acrylic resin and denture teeth: An in vitro study

Abstract

Aim and 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.Materials and 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.Conclusion: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.

The Effect of Acrylic Surface Preparation on Bonding Denture Teeth to Cellulose Fiber-Reinforced Denture Base Acrylic

“…Dental technicians use various procedures to improve it: Procedures enabling the creation of new chains and/or increasing the over-etching of the tooth’s structure (e.g., through using isobutyl methacrylate [ 9 ], dichloromethane [ 10 ], MMA [ 9 , 11 ], etc. ), ready-made mixes sold as “glues” [ 9 , 12 , 13 , 14 , 15 ]), or rubbing the tooth structure with a selected chemical reagent; Mechanical modification of the surface, wherein technicians create retainers [ 16 , 17 , 18 , 19 ] or develop the surface [ 9 , 14 , 19 , 20 , 21 , 22 , 23 , 24 ]; A combination of the two above methods (which is even suggested by manufacturers [ 15 ]). …”

“…Mechanical modification of the surface, wherein technicians create retainers [ 16 , 17 , 18 , 19 ] or develop the surface [ 9 , 14 , 19 , 20 , 21 , 22 , 23 , 24 ];…”

Oral mucosa reaction in patients adapting to removable dentures

“…Вместе с этим, в отечественной и зарубежной литературе мало внимания уделяется эффективности пользования съемными зубными протезами, в том числе в период адаптации к ним. В то же время воздействие съемных зубных протезов часто выходит за пределы жевательного аппарата, распространяется иногда на весь лицевой и мозговой скелет [13,14], а также влияет на психосоматическое здоровье [3,11,19]. В связи с вышеизложенным, мы сочли необходимым проведение настоящего клинического исследования.…”