dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-27T11:22:26Z | |
dc.date.accessioned | 2022-10-05T18:06:24Z | |
dc.date.available | 2014-05-27T11:22:26Z | |
dc.date.available | 2022-10-05T18:06:24Z | |
dc.date.created | 2014-05-27T11:22:26Z | |
dc.date.issued | 2007-03-01 | |
dc.identifier | Quintessence international (Berlin, Germany : 1985), v. 38, n. 3, 2007. | |
dc.identifier | 0033-6572 | |
dc.identifier | http://hdl.handle.net/11449/69572 | |
dc.identifier | 2-s2.0-34648831999 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3918996 | |
dc.description.abstract | OBJECTIVE: To evaluate the influence of cavity design and photocuring method on the marginal seal of resin composite restorations. METHOD AND MATERIALS: Seventy-two bovine teeth were divided into 2 groups: group 1 received box-type cavity preparations, and group 2 received plate-type preparations. Each group was divided into 3 subgroups. After etching and bonding, Z250 resin composite (3M Espe) was applied in 2 equal increments and cured with 1 of 3 techniques: (1) conventional curing for 30 seconds at 650 mW/cm2; (2) 2-step photocuring, in which the first step was performed 14 mm from the restoration for 10 seconds at 180 mW/cm2 and the second step was performed in direct contact for 20 seconds at 650 mW/cm2; or (3) progressive curing using Jetlite 4000 (J. Morita) for 8 seconds at 125 mW/cm2 and then 22 seconds at 125 mW/cm2 up to 500 mW/cm2. The specimens were thermocycled for 500 cycles and then submitted to dye penetration with a 50% silver nitrate solution. Microleakage was assessed using a stereomicroscope. Data were analyzed using analysis of variance and Tukey test (5% level of significance). RESULTS: A statistically significant difference was found between groups when a double interaction between photocuring and cavity preparation was considered (P = .029). CONCLUSIONS: No one type of cavity preparation or photocuring method prevented micro-leakage. The plate-type preparation showed the worst dye penetration when conventional and progressive photocuring methods were used. The best results were found using the 2-step photocuring with the plate-type preparation. | |
dc.language | eng | |
dc.relation | Quintessence international (Berlin, Germany : 1985) | |
dc.relation | 1.088 | |
dc.relation | 0,563 | |
dc.rights | Acesso restrito | |
dc.source | Scopus | |
dc.subject | acrylic acid resin | |
dc.subject | Composite Dental Resin | |
dc.subject | polyurethan | |
dc.subject | resin | |
dc.subject | unclassified drug | |
dc.subject | animal | |
dc.subject | cattle | |
dc.subject | chemistry | |
dc.subject | dental surgery | |
dc.subject | endodontics | |
dc.subject | methodology | |
dc.subject | radiation exposure | |
dc.subject | tooth disease | |
dc.subject | Acrylic Resins | |
dc.subject | Animals | |
dc.subject | Cattle | |
dc.subject | Composite Resins | |
dc.subject | Dental Cavity Preparation | |
dc.subject | Dental Leakage | |
dc.subject | Marginal Adaptation (Dentistry) | |
dc.subject | Polyurethanes | |
dc.title | Influence of cavity preparation and curing method on the marginal seal of resin composite restorations: an in vitro evaluation. | |
dc.type | Artigo | |