Ambu, Suresh (2011) Comparative Evaluation of Pull Out Bond Strength of Glass Fiber Post Luted with Different Resin Cements: An In Vitro Study. Masters thesis, Rajas Dental College and Hospital, Tirunelveli.
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Abstract
The present invitro study was undertaken to evaluate the pull out bond strength of glass fibre post luted with different resin cements using Universal testing machine. Eighty freshly extracted caries free human single rooted mandibular premolars were used in this study. The specimens were sectioned at the coronal level to standardize the specimen length at sixteen millimeters. These were then divided into 4 groups of 20 specimens each. Group I Resin modified glass ionomer cement, (Relyx luting 2 GIC), Group II Etch and rinse resin cement (Relyx ARC) (Bonding agent - Adaper single bond plus), Group III, Self etch adhesive resin cement (Relyx U 100), Group IV Etch and rinse resin cement (Calibra) (Bonding agent - Prime and Bond NT). Post space preparation was done using paeso reamer (size 2) followed by fiber post drill (25 size). Glass fibre posts were luted with resin cements to all specimens in Group I, Group II, Group III and Group IV according to the manufactures instructions. All the specimens were kept under distilled water at room temperature for 24 hours. After 24 hours the specimens were subjected to pull out bond strength using Universal testing machine until fracture. Results were tabulated and mean obtained for pull out bond strength values (N) of each group. One way ANOVA was performed to compare different groups. Duncan’s Multiple Range Test was carried out as post hoc comparison to elucidate the individual group difference. Group II (Relyx ARC) showed the maximum values for pull out bond strength (334.66 N) , Analysis of variance (One Way ANOVA) comparing different groups showed a highly significant statistical difference between different groups. Group II (Relyx ARC) and Group IV (Calibra) did not show any statistical difference in their pull out strength (DMR Test). But Group I and Group III showed significant difference between them. Group I showed the least value for pull out bond strength among all groups tested. CONCLUSION: Within the limitations of this study, it can be concluded that; 1.Etch and rinse resin cements show better bond strength values to root dentin than the self etch adhesive cements. Hence etch and rinse resin cement can be the material of choice in luting glass fibre post in endodontically treated teeth. 2. Self etching resin cements can also be considered as a viable alternative to etch and rinse resin cements. 3. Resin modified GIC has a lower bond strength value to root dentin when compared to self etch adhesive cements. Further studies with more parameters may be necessary to further confirmand validate these results.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Comparative Evaluation ; Pull Out Bond Strength ; Glass Fiber Post Luted ; Different Resin Cements ; In Vitro Study. |
| Subjects: | DENTAL > Conservative Dentistry and Endodontics |
| Depositing User: | Kambaraman B |
| Date Deposited: | 14 May 2018 04:49 |
| Last Modified: | 14 May 2018 04:49 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/7819 |
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