Effect of LED curing on the marginal leakage of a pit and fissure sealant

• Autores: Pineda Mejia, Martha Elena, Gloria Zevallos, Waldo, Abuhadba Hoyos, Tulio
• Formato: artículo
• Fecha de Publicación: 2013
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/5436
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/odont/article/view/5436
• Nivel de acceso: acceso abierto
• Materia: Sealants; diodes; filtration; Sellantes; diodos; filtración

The purpose of this study was to evaluate in vitro the curing effect of a light-emitting diode LED unit and conventional halogen light on the marginal leakage of a pit and fissure sealant. We used 40 caries-free permanent premolars recently extracted, which were randomly divided into two groups (n = 20), sealed with a resin based fissure sealant, Helioseal F (Ivoclar Vivadent), according to the manufacturer patterns, then photopolymerized using either L.E.D. light or conventional halogen light (control group). The specimens were stored in distilled water at 37 ° C for 48 hours, and covered all tooth surfaces with nail enamel except for a margin of 2 mm around the sealants, the samples were then immersed in a 1% blue methylene dye solution as a marginal leakage indicator, and subjected to thermocycling regimen of 500 cycles between 5 °C and 60 °C. After removal of the dye solution specimens were sectioned lingual to vestibule way, to evaluated marginal leakage on a stereomicroscope. 35% and 60% of the sealants photopolymerized using either L.E.D. light or conventional halogen light showed some degree of marginal leakage, but the difference was not statistically significant (p> .05). The curing L.E.D. light or conventional halogen light has similar effects on the marginal leakage degree of a pit and fissure sealant.