Comparison of bond force between 3D-printed denture base resin and artificial teeth according to sandblasting and chemical surface treatments

Key Points

• The aim is to evaluate the effect of surface treatments on bond force between 3D-printed denture resin and artificial teeth.
• Used a DLP 3D printer to create specimens matched to the surfaces of artificial teeth.
• Prepared specimens subjected to sandblasting with alumina particles.
• Divided into three groups based on surface treatment: sandblasting only, sandblasting plus silane, and sandblasting plus primer.
• Measured bond strength with a universal testing machine at a crosshead speed of 5 mm/min.
• The SB+P group exhibited the highest bond strength for canines (13, 23) with statistical significance (p<0.05).
• Overall average bond strength of the maxillary anterior teeth in the SB+P group was significantly higher compared to SB and SB+S groups (p<0.05).
• Combining mechanical sandblasting with chemical primer application is recommended to enhance the clinical success rate of 3D-printed dentures.

Abstract