The fractographic analysis of three dentin bonding agents on tooth surface

• Main Author: Adioro Soetojo
• Format: Article
• Language: English
• Published: Universitas Airlangga 2006-12-01
• Series: Dental Journal: Majalah Kedokteran Gigi
• Subjects: dentin bonding agents; dentin collagen; blot-dry technique; fractographic analysis
• Online Access: http://e-journal.unair.ac.id/index.php/MKG/article/view/1077

<span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>The dentin bonding agent is hydrophilic resin that can strongly bind to dentin surface, both in chemical and physical-mechanical </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>ways. The dentin surface is good for the resin bonding when the surface is in moist condition. Three types of dentin bonding agents: </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>Voco, Prime &amp; Bond NT and Excite were used in this research and their application methods are called as total-etched technique. </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>The objective of this research is to examine the difference of tensile bond strength of the three bonding agents on the moist dentin </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>surface. Bovine incisivus teeth were cut and sharpened using diamond bur then smoothened with sandpaper. Dentin surfaces were </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>etched with 37% phosphoric acid, washed with 20 cc aquadest, and dried with blot-dry technique. The preparation teeth were inserted </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>into desiccator with minimum humidity 60% and maximum 90% for one hour. After removed from the desiccator, the Voco agent was </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>applied on the teeth in first group, and then followed by the Prime &amp; Bond NT and Excite agents, respectively. The resulting sample </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>was stored within the room temperature. After 24 hours, the tensile bond strength was tested using Autograph instrument. The results </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>indicated that the tensile bond strength of Voco and Prime &amp; Bond NT agents were higher than Excite both at humidity 60% and 90% </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>(p </em><span style="font-family: SymbolProportionalBT-Regular; 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, the dentin bonding agents with acetone solvents have a higher tensile bond strength compared with those </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>with alcohol solvents.</em></span></span></span></span></span></span></span></span></span></span></span></span></span></span>