Significant increase in failure load ranged for diatoric 274+-78N.
Group 4 Ridge lap surfaces prepared for a diatoric, 2mm deep and 3mm wide, drilled on the palatal surfaces of teeth.
Group 4 (diatoric) and Group 5 (sand blasting) showed statistically significant difference in bond fail ure (P less than 0.05) while all the other groups did not show any statistically significant difference.
Failure loads were significantly higher with diatoric, although vertical grooves also displayed increased bond failures as compared to controls.
Takahashi et al2 worked on 3 different denture base resins and 3 different types of denture teeth, the ridge lap surfaces of denture teeth were treated with chemi cal solvents, dichloromethane or prepared for a diatoric. Their results showed that conventional acrylic resin denture base material bonds better with conventional resin denture teeth as compared to highly crosslinked denture teeth.
Barpal8 et al compared two different type of acrylic resin bonded to highly crosslinked teeth and found that diatoric increases the bond strength with one type of resin and decreased with other type of resin.
First group served as the control with no surface preparation; other groups included horizontal grooves, vertical grooves, diatorics, sand blasting and roughened surfaces.
This finding is consistent with the present study, as teeth diatorics failed cohesively and teeth with vertical and horizontal grooves required higher but nonsignificant force for debonding.