PMID- 19341580 OWN - NLM STAT- MEDLINE DCOM- 20090722 LR - 20151119 IS - 1935-5068 (Electronic) IS - 1551-8949 (Linking) VI - 76 IP - 1 DP - 2009 Jan-Apr TI - Effect of LED curing on marginal integrity of an ormocer-based sealant. PG - 53-7 AB - PURPOSE: The purpose of this study was to investigate the microleakage of a light cured, ormocer-based fissure sealant when photopolymerized with 2 different light emitting diode (LED) curing units and a conventional quartz-tungsten halogen (QTH) light-curing unit. METHODS: Thirty freshly extracted, unerupted human third molars from 9 adolescent were randomly assigned into 3 groups (N=10/group). Pits and fissures were acid etched for 30 seconds, rinsed for 15 seconds with an air-water spray, and air-dried. An ormocer-based fissure sealant material (Admira Seal) was applied to all fissures. In group 1, the sealant was photopolymerized with a Smart Light LED curing unit (Dentsply) for 10 seconds. Another LED curing unit (Elipar II) and a conventional QTH curing unit (Hilux) were used in groups 2 and 3 for 10 and 30 seconds, respectively. Specimens were immersed in 0.5% basic fuchsin for 24 hours, sectioned and examined under a stereomicroscope, and scored for marginal microleakage. RESULTS: Statistical analysis of microleakage scores revealed no significant difference among the groups tested (P>.05, Kruskal-Wallis test). CONCLUSION: The tested LED curing units may provide reduction in total application time without comprising marginal integrity of the ormocer-based sealant. FAU - Cehreli, Sevi Burcak AU - Cehreli SB AD - Baskent University Faculty of Dentistry, Department of Pediatric Dentistry, Ankara, Turkey. seviburcak@yahoo.com FAU - Arikan, Serdar AU - Arikan S FAU - Gulsahi, Kamran AU - Gulsahi K FAU - Arhun, Neslihan AU - Arhun N FAU - Arman, Ayca AU - Arman A FAU - Sargon, Mustafa AU - Sargon M LA - eng PT - Journal Article PL - United States TA - J Dent Child (Chic) JT - Journal of dentistry for children (Chicago, Ill.) JID - 101180951 RN - 0 (Methacrylates) RN - 0 (Organically Modified Ceramics) RN - 0 (Pit and Fissure Sealants) RN - 0 (Silanes) RN - 0 (Siloxanes) RN - 0 (admira) SB - IM MH - Acid Etching, Dental MH - Adolescent MH - Ceramics/*chemistry MH - *Curing Lights, Dental MH - Dental Leakage/*prevention & control MH - *Dental Marginal Adaptation MH - Humans MH - Methacrylates/*chemistry MH - Molar, Third MH - Organically Modified Ceramics MH - Pit and Fissure Sealants/*chemistry MH - Random Allocation MH - Silanes/*chemistry MH - Siloxanes/*chemistry MH - Statistics, Nonparametric MH - Time Factors EDAT- 2009/04/04 09:00 MHDA- 2009/07/23 09:00 CRDT- 2009/04/04 09:00 PHST- 2009/04/04 09:00 [entrez] PHST- 2009/04/04 09:00 [pubmed] PHST- 2009/07/23 09:00 [medline] PST - ppublish SO - J Dent Child (Chic). 2009 Jan-Apr;76(1):53-7.