Wiersema, S. (Sharon) (2013) De invloed van spoelen met ascorbinezuur na het spoelen met natriumhypochloriet tijdens de endodontische behandeling op de hechtingssterkte van een glasvezelstift aan wortelkanaaldentine. thesis, Dentistry.
Full text available on request.Abstract
Purpose: An ex vivo study to evaluate the effect of 10% ascorbic acid on the bond strength of a resin luted fiber post to radicular dentin after irrigation with 2% sodium hypochlorite. Methodology: After randomisation 45 human molars were divided in three groups of 15 teeth. The roots were decapitated at the cement-enamel junction and prepared in a standardized manner with an apical diameter of 0.40mm and a taper of 0.08mm. In group 1 15ml 2% sodium hypochlorite (NaOCl) and 10% ascorbic acid (AA) was used during the preparation; in group 2 15ml 2% NaOCl was used; in group 3 15ml 0.9% NaCl. Post space was made after root canal obturation with guttapercha and AH Plus at a level of 2.0mm coronal from the working length. A ParaPost fiber post with a diameter of 1.5mm was luted with Panavia F2.0. Horizontal sections of the roots were made at two levels (coronal and mid) and subjected to a push-out test with an universal load testing machine at a vertical speed of 0.5mm/min. Failure analysis was visually scored. Data were analyzed between the three groups and in between groups with one-way ANOVA at a critical significance level of 0.05. Results: The mean bond strength in group 1 (NaOCl + AA) is 23.38MPa, in group 2 (NaOCl) 26.34MPa and in group 3 (NaCl) 21.48MPa. There is no significant difference between the groups (p=0.352). Between the coronal section (14.23MPa) and mid section (26.92MPa) in group 3 (NaCl) a significant difference is found (p=0.008). Conclusion: Irrigation with 2% NaOCl did not affect the bond strength between root canal dentin and Panavia F2.0. Irrigation with 10% ascorbic acid after the use of 2% NaOCl did not improve the bond strength.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Begeleider: and Vogels, drs. M.P.J.M. and Centrum voor Tandheelkunde en Mondzorgkunde, Universitair Me |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:51 |
| Last Modified: | 25 Jun 2020 10:51 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/1201 |
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