TY - JOUR ID - TI - A comparative study of apical microleakage by using different preparation and obturation techniques AU - Adel F. Ibraheem AU - Mervat M. AL – Bakri PY - 2009 VL - 21 IS - 2 SP - 35 EP - 38 JO - Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد SN - 18171869 23115270 AB - ABSTRACT
Background: When a tooth is treated endodontically, there are several objectives, which must be met for the root
canal therapy to be successful. One of those objectives is the complete obturation of root canal system. The purpose
of this study was to evaluate the apical sealing ability of root canals prepared by hand and rotary ProTaper system
and obturrated with Thermafil and ProTaper gutta percha points in comparison with conventional cold lateral
condensation by using dye penetration method.
Materials and Methods: Sixty extracted human single straight canals (premolars) were collected and these teeth
were randomly divided into two groups of 30 specimens each.(Group A-rotary ProTaper, Group B-hand ProTaper),
and each group were divided into three subgroups of 10 specimens each.(Group A1,B1-Thermafil,Group A2,B2-
ProTaper gutta percha points, Group A3,B3 cold lateral condensation). Dorifil root canal sealer was employed as the
common sealant.
Results: The hand ProTaper was significantly better than rotary ProTaper at apical microleakage when Thermafil,
ProTaper gutta-percha point and lateral condensation were used. In group A both the highest and lowest mean
value for apical leakage were seen at lateral condensation technique (4.35) and Thermafil technique (1.35) while
the protaper g.p points was (2.75).In group B both the highest and lowest mean value for apical leakage were seen
at CLC (3.55) and Thermafil (1.1) while the protaper g.p points was (2.65).There was high statistically significant
difference between Thermafil, protaper g.p points and CLC techniques(p<0.05)
Conclusion: The results of this study indicate that root canals prepared by hand protaper was significantly better than
rotary protaper at apical microleakage.The roots treated by Thermafil leak the least than protaper g.p points and
CLC techniques.
Key words: Apical seal, Thermafil, ProTaper gutta percha points, Lateral condensation. J Bagh Coll Dentistry 2009;
21(2):35-38)

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