Influence of atmospheric pressure low-temperature plasma treatment on the shear bond strength between zirconia and resin cement

详细信息    查看全文

• 作者：Yuki Ito ; DDS ; ^{ito_yuki0907@yahoo.co.jp" class="auth_mail" title="E-mail the corresponding author} ; Takahisa Okawa ; DDS ; PhD ; Takahiro Fukumoto ; DDS ; Akiko Tsurumi ; DDS ; PhD ; Mitsuhiro Tatsuta ; DDS ; PhD ; Takamasa Fujii ; DDS ; PhD ; Junko Tanaka ; DDS ; PhD ; Masahiro Tanaka ; DDS ; PhD
• 关键词：Atmospheric-pressure low-temperature plasma treatment ; Adhesive resin cement ; Zirconia ; Alumina sandblast treatment
• 刊名：Journal of Prosthodontic Research
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：60
• 期：4
• 页码：289-293
• 全文大小：571 K

文摘

Zirconia exhibits excellent strength and high biocompatibility in technological applications and it is has therefore been investigated for clinical applications and research. Before setting prostheses, a crown prosthesis inner surface is sandblasted with alumina to remove contaminants and form small cavities. This alumina sandblasting causes stress-induced phase transition of zirconia.

Atmospheric-pressure low-temperature plasma has been applied in the dental industry, particularly for adhesives, as a surface treatment to activate the surface energy and remove contaminants.

The purpose of this study was to examine the influence of atmospheric-pressure low-temperature plasma treatment on the shear bond strength between zirconia and adhesive resin cement.

Methods

The surface treatment method was classified into three groups: untreated (Cont group), alumina sandblast treatment (Sb group), and atmospheric-pressure low-temperature plasma treatment (Ps group).

Adhesive resin cement was applied to stainless steel and bonded to zirconia. Shear adhesion tests were performed after complete hardening of the cement. Multiple comparisons were performed using a one-way analysis of variance and the Bonferroni method.

X-ray diffractometry was used to examine the change in zirconia crystal structure.

Results

Statistically significant differences were noted between the control and Sb groups and between the control and Ps groups. In contrast, no statistically significant differences were noted for the Ps and Sb bond strength.

Atmospheric-pressure low-temperature plasma treatment did not affect the zirconia crystal structure.

Conclusions

Atmospheric-pressure low-temperature plasma treatment improves the bonding strength of adhesive resin cement as effectively as alumina sandblasting, and does not alter the zirconia crystal structure.