KMID : 0358920190460020127
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Journal of the Korean Academy of Pedodontics 2019 Volume.46 No. 2 p.127 ~ p.134
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Bond Strength of Band on Zirconia Crown with Compomer and Resin Cement
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Park Chan-Hee
Lee Jong-Hyung Lee Han-Gil Kim Ji-Hun
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Abstract
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The aim of this study was to evaluate the compomer cement and resin cement as an orthodontic band cement on zirconia crown.
A total of 30 specimens were prepared. Preformed stainless steel crowns and zirconia crowns of upper right second primary molar were used. Orthodontic bands were cemented on stainless steel crowns (Group ¥°, n = 10) and zirconia crowns (Group ¥±, n = 10) with compomer cement. The other bands were cemented on zirconia crowns with resin cement (Group ¥², n = 10). The tensile loads were applied to band to measure the bond strength.
The mean of bond strengths of group ¥°, ¥± and ¥² were 0.79 MPa, 1.09 MPa and 1.56 MPa respectively. Bond strength of group ¥± is significantly higher than group ¥°. There was no significant difference between group ¥± and ¥².
Compomer cement and resin cement containing functional monomers showed favorable bond strength of orthodontic bands.
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KEYWORD
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Bond strength, Orthodontic band, Preformed zirconia crown
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