Document Details
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Document Type |
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Project |
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Document Title |
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Improvement of dentin bonding agent for direct composite resin restoration تحسين الحشوات الجمالية للأسنان بإعادة تركيب المواد اللاصقة بها |
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Subject |
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Oral and Maxillofacial Rehabilitation |
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Document Language |
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Arabic |
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Abstract |
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Statement of problem. Fluorinated monomers have been shown to reduce water sorption in composite resins.
Purpose. Dentin bonding resins generally based upon All-Bond 2 (AB, Bisco) and OptiBond Solo Plus (OB, Kerr) were formulated using fluorinated TEGDMA, TEGDMA, bis-EMA, and HEMA. The purpose of this study was to measure and compare water sorption and solubility among experimental resins with various concentration of F-TEGDMA (F-T) and commercial products.
Materials and Methods. Light-curable, filled (f) and unfilled (u) bonding resins were made with F-T concentrations of 0, 17, 24, and 30 wt% of the resin component. Silanized barium silicate glass (Kerr) was used for the filled resin at 48 wt%. According to the ANSI/ADA specification # 27 (ANSA/ADA Specifications, ADA, Chicago 1993) water sorption (Wsp) and solubility values (Wsl) were determined for the 8 experimental and 2 commercial bonding resins with 5 specimens in each group.
Result. The mean water sorption and solubility values in µg/mm3 are reported in the table. Identical superscripts show groups with no significant differences.
R1f0 R2f17 R3f30 R4f24 OB R1u0 R2u17 R3u30 R4u24 AB
Wsp 15±.7a 15±.3a 15±.2a 15±.3a 16±.4b 11±.1f 11±.1fg 12±.4g 11±.1fg 12±.2fg
Wsl 14±.7c 15±.4cd 15±.2cd 15±.2cd 16±.4e 11±.1h 11±.1hi 11±.4hi 11±.1ij 11±.2j
Statistical significant differences were found between filled and unfilled groups (p<0.05) using ANOVA and Tukey protocols.
Conclusion. Filler particles in bonding resins increase water sorption and solubility. The experimental filled bonding resins showed less water sorption than did the commercial product. |
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Publishing Year |
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1425 AH
2005 AD |
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Added Date |
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Friday, October 23, 2009 |
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Researchers
| محمد فرج عياد | ayad, mohammed farag | Investigator | Doctorate | |
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