Ameloplasty is counterproductive in reducing microleakage around Resin Modified Glass Ionomer and Resin based fissure sealants

摘要

Objective: To compare the microleakage around resin modified glass ionomer cement (RMGIC) basedsealants and flowable resin based sealants placed with or without ameloplasty in extracted human teeth.Methods: This in-vitro experimental study was conducted at the Operative Dentistry Department, DowUniversity of Health Sciences, Karachi, Pakistan from June 2017 to December 2018. Sixty extracted humanmolars and premolars were assigned to four groups (n=15) each, according to the type of fissure sealant(flowable resin based sealant or resin modified glass ionomer based sealant) used and either placed with orwithout ameloplasty. Specimens were thermocycled and then immersed in 1% methylene blue for 24 hours.Specimens were then sectioned and examined using stereo-microscope (50X) for microleakage that wasscored on an ordinal scale. Mann-Whitney U test and Ordinal regression were applied. Level of significancekept at 0.05.Results: There was a statistically significant difference (p-value 0.001) between the two sealant types forthe microleakage scores. Sealants placed with ameloplasty demonstrated significantly higher microleakagevalues (p-value 0.001).Conclusion: Microleakage was found to be more pronounced in RMGIC based sealants compared to the resinbased sealants. Ameloplasty resulted in higher leakage around the sealants irrespective of the chemistryof material.