Study of chemical bond strength of methyl methacrylate (MMA) based bonding agent on type I dentin collagen at various humidity

• Main Author: Adioro Soetojo (Author)
• Format: Book
• Published: Universitas Airlangga, 2007-06-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

<span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>One of the basic agents used in dentin bonding solution is methyl methacrylate (MMA). This bonding agent is widely used in dentistry. </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>It have been proved that the adhesion between dentin bonding agent and collagen fibril is chemically bond; though the chemical bonding </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>contribution is smaller than physical mechanical bond. The purpose of the research was to examined the chemical bonding strength </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>of MMA based dentin bonding on type I dentin collagen at various humidity. Samples of treatment group were put into desiccator </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>with 60%, 70%, 80%, and 90% humidity, while for control groups at room humidity (65%). Chemical bond of pure MMA and MMA </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>mixed with collagen were measured by FTIR. The lower the value of MMA carbonyl, the higher absorbance band speak of chemical </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>bond strength between MMA and collagen. Data was statistically analyzed with One-Way ANOVA at 95% confidence level continued </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>with Tukey-HSD test. The result showed that the highest chemical bond strength was at 65% humidity (p </em><span style="font-family: Symbol; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;">≤ <span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>0.05). In conclusion, many </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>esther carbonyl MMA molecules reacted with amino collagen at 65% humidity. This can be shown by the lowest peak's value of the </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>MMA carbonyl absorbance at FTIR.</em></span></span></span></span></span></span></span></span></span></span></span></span>

Item Description

1978-3728
2442-9740
10.20473/j.djmkg.v40.i2.p89-93