| Autor: |
Qadri, G., Noor, S. N. F. Mohd, Mohamad, D. |
| Zdroj: |
Malaysian Dental Journal; 2008, Vol. 29 Issue 1, p59-60, 2p |
| Abstrakt: |
Summary: The aim of this study was to investigate whether differences in the technique of repair, influence a seal of a repaired nano-filled resin based sealant, placed on occlusal surfaces of permanent molar teeth in-vitro. Sample and methods: 112 human extracted molars were randomly allocated to one of four groups, of 28 teeth each. A nano filled resin sealant (Filtek Z350) was placed on their occlusal surface following cleaning by prophylaxis and acid etching. Duplication of sealant failure was carried out. The teeth were then subjected to four different methods of repair: Group 1: With a slow speed prophylaxis brush followed by acid etching; Group 2: Prophylaxis brush, acid etching and application of bonding agent; Group 3: Light curing for 5s; and Group 4: Light curing for 20s. Then, they were stored for one week in artificial saliva, painted with two layers of varnish: their apices were sealed with wax, and the teeth were immersed in 1% methylene blue. The teeth were then sectioned to achieve three cuts. A total of 648 sections from 112 teeth were scored for microleakage. Results: Statistical analysis using chi-squared did not demonstrate any one single method of repair to be superior to the control method for reapplication of the sealant. Conclusion: Group no. 1, seems to be the most appropriate, as this method is likely to be agreeable to most children because of its time saving nature. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
