2

fa Microbial Microleakage Assessment of a New Hydrophilic Fissure Sealant: A Laboratory Study کودکان Pediatric Dentistry پژوهشي Research Purpose: The purpose of this study was to compare microbial leakage of a new hydrophilic sealant with that of a conventional hydrophobic resin-based sealant. Methods: One hundred extracted, caries-free, human maxillary premolars were randomly divided into five groups. Those in Groups 1, 2, and 3 had dry, wet, and artificial saliva-contaminated occlusal surfaces, respectively, and were sealed with a hydrophilic sealant, while those in Groups 4 and 5 had dry and wet occlusal surfaces, respectively, and were sealed with a hydrophobic sealant. A newly designed microbial penetration method utilizing Streptococcus mutans as an indicator was tested for leakage assessment. Data were analyzed using SPSS 15.0 software, and the significance level was set at α=0.05. Results: The log rank test indicated a statistically significant difference in leakage rates among the five groups. Mantel-Cox log-rank test findings showed that Group 3 had the highest leakage rate, with Groups 2 and 4 having the lowest. There was no statistically significant difference in leakage rate between Groups 2 and 4. Conclusions: With respect to the limitations of an in vitro study, our findings suggest that hydrophilic sealants are an acceptable alternative to hydrophobic sealants. <hr> Source: Journal of American Academy of ‍ Pediatric Dentistry <a href="http://www.ingentaconnect.com/content/aapd/pd/2013/00000035/00000007/art00013" target="_blank">Full Text</a> DENTAL LEAKAGE; HYDROPHILICITY; PIT AND FISSURE SEALANTS 0 0 http://idai.ir/browse.php?a_code=A-10-32-2606&slc_lang=fa&sid=1 Ali Bagherian 100319475328460012305 100319475328460012305 Yes Mahsa Ahmadkhani 100319475328460012306 100319475328460012306 No Mahmood Sheikhfathollahi 100319475328460012307 100319475328460012307 No Reza Bahramabadinejad 100319475328460012308 100319475328460012308 No