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J Korean Acad Prosthodont. 2018 Jul;56(3):199-205. English. Original Article. https://doi.org/10.4047/jkap.2018.56.3.199
Manaloto-Ceballos L , Labriaga W , Song SY , Park JH , Lee JY , Shin SW .
Institute for Clinical Dental Research, Korea University Guro Hospital, Seoul, Republic of Korea. wddc@korea.ac.kr
Abstract

Purpose

This study evaluated the effect of nonthermal plasma treatment on the bond strength of autopolymerizing relining resin to the injection molded thermoplastic denture base resins (TDBRs) with different surface treatments.

Materials and methods

Acrylic Resin (Acrytone), Polyester (Estheshot-Bright), Polyamide (Valplast) and Polypropylene (Weldenz) were subjected to various surface treatments: No treatment, Nonthermal plasma, Sandblasting, Sandblasting and nonthermal plasma. Specimens were bonded using an autopolymerizing relining resin. Shear bond strength was tested using universal testing machine with crosshead speed of 1 mm/min. Statistical analysis by two-way analysis of variance with Tukey's test post hoc was used.

Results

Acrytone showed significantly higher shear bond strength value among other TDBR group while Weldenz had the lowest. The sandblasting and nonthermal plasma condition had significantly higher shear bond strength value in all of the resin groups (P < .05).

Conclusion

The use of nonthermal plasma treatment showed limited effect on the shear bond strength between TDBRs and relining resin, and combination of nonthermal plasma and sandblasting improved the shear bond strength between TDBR and reline material.

Copyright © 2019. Korean Association of Medical Journal Editors.