Resumen

VILLARREAL ROJAS, Azucena; GUERRERO IBARRA, Jorge; YAMAMOTO NAGANO, Adolfo  y  BARCELO SANTANA, Federico Humberto. Curing depth of pit and fissure sealants with use of light emitting diode (LED) at different distances. Rev. Odont. Mex [online]. 2015, vol.19, n.2, pp.76-80. ISSN 1870-199X.

In the process of caries prevention, placement of pit and fissure sealants is a low-priced, effective and safe procedure. Presently, clinical operators prefer LED lamps. In pediatric dentistry, certain complications might arise such as lack of patient cooperation and small oral opening. This could result in increase of distance between light source and sealant. Objective: The purpose of the present study was to determine whether increase of distance between light source and pit and fissure sealant affected curing depth. Material and methods: 90 samples of pit and fissure sealant Helioseal F^® were light-cured for 20 seconds with a Bluephase C5 LED lamp (Ivoclar Vivadent^®), 30 seconds with the light source at a distance of 0 mm, 30 seconds at 5 mm and 30 seconds at 10 mm. Non-polymerized material was removed with a spatula for resin (Suter Dental^®). The sample was measured in mm with an electronic Vernier caliper; obtained value was divided into two (ADA's Norm 27). Results were assessed with ANOVA and Tukey tests. Results: The group treated at 0 mm exhibited curing depth of 2.01 mm (SD 0.11). The group treated at 10 mm, with 1.62 mm (SD 0.08) showed the least amount of curing depth. Statistically significant differences were found in average values when comparing the three groups (p < 0.05). Conclusion: Distancing light source from sealants affects their curing depth.

Palabras llave : Curing depth; pits and fissure sealants; LED.