Effect of immediate and delayed postpreparation on the integrity of the apical seal: an in vitro study.
OBJECTIVE
The aim of this in vitro study was to evaluate if there is any significant difference in apical leakage when gutta-percha is removed immediately after obturation for postspace preparation or after a week.


METHODS
Two commonly used sealers AH26 and tubliseal were used in four groups each consisting of 20 teeth each. The tooth was sectioned at the amelocemental junction to leave a root portion of 12 to 14 mm. Canals were checked for patency and prepared to No-55 K file size. Two people, using a stereomicroscope, independently evaluated each tooth-half for the extent of apical leakage.


RESULTS
The leakage results were analyzed using a one-way ANOVA according to present study, immediate postpreparation is preferable than delayed postpreparation. The relationship of in vitro leakage measurements to the in vivo situation has not been established.


CONCLUSIONS
Hence, immediate postpreparation is preferable than delayed postpreparation.
Department of Conservative Dentistry and Endodontics, YCMM & RDF's Dental College, Ahmednagar Maharashtra, India.
Sarvesha
S
Bhondwe
Abhay
A
Kamra
Shantanu
S
Choudhari
S
S
Srilatha
Neha Chhasatia
NC
Desai
Varsha Sanjay
VS
Pandit
D000704:Analysis of Variance; D001729:Bismuth; D003763:Dental Leakage / Q000517:prevention & control*; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D011176:Post and Core Technique; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D018915:Root Canal Preparation; D012834:Silver; D013997:Time Factors; D014025:Titanium; D015035:Zinc Oxide-Eugenol Cement
D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; D012834:Silver; C028044:epoxy resin AH-26; C048769:tubliseal; D006171:Gutta-Percha; D014025:Titanium; D001729:Bismuth