engleski

Coronal microleakage of two root end filling materials using a polimicrobe marker

Aim: To evaluate bacterial coronal microleakage of MTA and amalgam as retrograde fillings of roots orthogradly filled with gutta-percha and three root canal sealers. Methodology: 108 single rooted teeth were radodomly divided into 3 groups of 32 teeth each and positive and negative control groups of 6 teeth, and obturated by cold lateral condensation of gutta-percha and either Diaket, AH Plus or Ketac Endo. Each of the three groups was further divided into 2 subgroups of 16 teeth which root ends were resected and obturated with either MTA or zinc free amalgam. The samples have been incorporated in a model system so that the apical part of the sample was dipped into uncontaminated buyon, while 0, 5 ml of the buyone contaminated with polimicrobial marker of 5 facultative anaerobes (Streptococcus Mutans 6715 WT, Streptotoccus Mitis, Lactobacillus Species NCTC1723, Staphylococcus Aureus ATCC 29213, Enterococcus Faecalis ATCC 29212) was placed on the coronal part of each sample. The teeth were checked for bacterial leakage daily for 90 days and the exact day of buyon contamination was recorded for every sample. The obtained data were analysed using descriptive statistics, variance analysis, Sheffe post hoc test and Kaplan Meier test. Results: The least leakage was observed in a combination of Diaket and MTA (76.9 &plusmn ; 14.8 days) followed by AH Plus and MTA (66.1&plusmn ; 18.7), Diaket and amalgam (60.0&plusmn ; 23.1), AH Plus and amalgam (56.9&plusmn ; 22.1), Ketac Endo and MTA (42.1&plusmn ; 17.8) while the greatest leakage was observed in Ketac Endo and amalgam group (40.0&plusmn ; 17.24). Groups sealed with Diaket and AH Plus leaked significantly less (p<0.05) than groups with Ketac Endo. Groups filled with MTA leaked significantly less (p<0.05) than amalgam. Conclusions: MTA in the combination with Diaket leaked the least.

microleakage; root end filling; MTA; amalgam

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