Nonthermal plasma on the shear bond strength of relining resin to thermoplastic denture base resin

Manaloto-Ceballos Liezl; Wilmart Labriaga; So-Yeon Song; Jin-Hong Park; Jeong-Yol Lee; Sang-Wan Shin

doi:10.4047/jkap.2018.56.3.199

Journal List > J Korean Acad Prosthodont > v.56(3) > 1099092

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Liezl, Labriaga, Song, Park, Lee, and Shin: Nonthermal plasma on the shear bond strength of relining resin to thermoplastic denture base resin

ORIGINAL ARTICLE

J Korean Acad Prosthodont 2018;56(3):199-205.

Published online: NaN July 2018

DOI: https://doi.org/10.4047/jkap.2018.56.3.199

Nonthermal plasma on the shear bond strength of relining resin to thermoplastic denture base resin

Manaloto-Ceballos Liezl, Wilmart Labriaga, So-Yeon Song, Jin-Hong Park, Jeong-Yol Lee^∗, Sang-Wan Shin

Institute for Clinical Dental Research, Korea University Guro Hospital, Seoul, Republic of Korea

∗Corresponding Author: Jeong-Yol Lee Department of Prosthodontics, Korea University Guro Hospital 148, Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea +82 (0)2 2626 1922: e-mail, wddc@korea.ac.kr

Received 28 February 20188 May 2018 Accepted 17 May 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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. (J Korean Acad Prosthodont 2018;56:199-205)

Keywords: Nonthermal plasma, Thermoplastic denture base resin, Shear bond strength, Autopolymerizing relining resin

REFERENCES

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Fig. 1.

Experimental study design procedure.

Fig. 2.

(A) Image of the specimen, (B) Shear bond strength testing procedure.

Fig. 3.

Shear bond strength test between surface treatment groups. Different letters within the same material show significant difference (P < .05). AC: Acrytone; ES: Estheshot; VA: Valplast; WE: Weldenz; C: No treatment; SB: Sandblasting; NTP: Nonthermal plasma; SB + NTP: Sandblasting and nonthermal plasma.

Table 1.

List of thermoplastic denture base resins and autopolymerizing relining resin

Materials	Product	Manufacturer	Processing method	Lot number
Polyester	Estheshot-Bright (ES)	I-cast Co. Ltd., Kyoto, Japan	Heat processed at 270°C for 20 min.	4D5760060
Acrylic resin	Acrytone (AC)	High Dental Japan, Osaka, Japan	Heat processed at 250°C for 20 min.	1211097
Polyamide	Valplast (VA)	Valplast International Corp., New york, NY, USA	Heat processed at 285°C for 20 min.	140213
Polypropylene	Weldenz (WE)	Weldenz, Nagoya, Japan	Heat processed at 235°C for 20 min.	111547
Autopolymerized relining resin	Tokuyama Rebase II	Tokuyama Dental Corp., Tokyo, Japan	Composition: Powder (PEMA), Liquid (AAEM 1.9-nonanediol Dimethacrylate)	137030

Table 2.

Mean shear bond strength (MPa) values of different thermoplastic denture base materials

	AC	ES	VA	WE
C	7.66 ± 1.19^A;a	2.32 ± 0.78^A;b	1.21 ± 0.50^A;c	0.98 ± 0.33^A;c
NTP	6.57 ± 1.11^A;a	2.97 ± 0.97^A;b	0.95 ± 0.49^A;c	0.76 ± 0.33^A;c
SB	7.65 ± 0.66^A;a	4.60 ± 0.41^B;b	2.14 ± 0.56^B;c	2.24 ± 0.38^B;d
SB + NTP	8.78 ± 0.60^B;a	4.88 ± 0.40^B;b	3.99 ± 0.54^B;c	3.50 ± 0.42^C;c

Different letters show a significant difference (capital letter: in the same column, small letter: in the same row, P < .05). AC: Acrytone; ES: Estheshot; VA: Val plast; WE: Weldenz; C: No treatment; NTP: Nonthermal plasma; SB: Sandblasting; SB + NTP: Sandblasting and nonthermal plasma.

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