Can the Root End Resective Surgery of Two Different Angles Affect the Apical Microleakage of the Retrofilling Material (In Vitro Study)
Keywords:Apical surgery, Bevel angle of resection, Microleakage, Retro filling.
Introduction: Endodontic surgery become essential to save teeth when the endodontic treatments are failed.
It promote root canal debridement and insertion of retrograde filling to make sure tight sealing apically.
Aim: Compare the influences of two different resection angles (0 and 30 degree bevel angle to the long axis
of the tooth) on the apical micro leakage by utilizing dye penetration technique.
Methods: 80 single rooted permanent teeth were amputated 3 mm from the apex at two different resection
angles. Retrograde cavities were prepared and filled with Well-ROOT PT® and MTA BIOREP®. All
specimens were immersed in 2% methylene blue dye for 24 hours. The specimens were cut longitudinally
by microtome and photographed digitally using stereomicroscope. With the use of Kinovea program dye
penetration area was measured. Two WAY Analysis of Variance (Two Way ANOVA) were used to analyze
the result statistically at P<0.05.
Results: No group exhibited complete sealing of root-end zones. The group of MTA BIOREP® demonstrated
statistical significant differences with 0 degree angle which showed less leakage.
Conclusion: MTA BIOREP® retro filling material with 0 degree angle of resection were significantly
superior regarding apical microleakage compared with Well-ROOT PT®.
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