Examining the Attachment of Artificial Teeth to the Acrylic Base Through Several Adhesions and Polymerizing...

The strength of the binding between the acrylic denture teeth and the foundation materials of dentures has been found to vary.

Analyze the various adhesives and polymerizing techniques used to attach acrylic denture teeth to the acrylic denture base.

Tooth preparation and curing were done using heat-cured and microwave-cured (Acron Mc) acrylic resin. The 60 teeth were divided into six groups and subjected to different surface treatments. The second group was given diatoric preparation, the third group thinner, the fourth group acetone, the fifth group diatoric acetone conditioning, and the sixth group diatoric thinner conditioning. The control group was left untreated. The mesiodistal retention grooves of the second, fifth, and sixth groups were 2 mm deep and 3 mm wide, significantly affecting (p  < 0.01) the ridge laps of the acrylic denture teeth. The specimens were stored for 10 days at 37°C in distilled water before testing. The specimen was then visually evaluated after being broken by shear force delivered by an Instron universal testing machine.

The study revealed that the microwave-cured acrylic denture base displayed higher shear bond strength (SBS) compared to the heat-cured resin, regardless of the surface treatment applied. The outcomes indicated that the microwave-cured resin had notably lower mean values of SBS for all acrylic denture teeth in comparison to the heat-cured resin.

The microwave-cured resin had significantly lower mean SBS values than the heat-cured resin. The sixth group had the largest SBS compared to the other groups at the p-value < 0.05. Unlike previous studies, this work incorporates a comparative evaluation of combined mechanical and chemical treatments (grooves with thinner conditioning and acetone), aiming to generate clinically applicable modifications for enhancing denture longevity.