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Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2019, vol. 25, issue1
Subject Area: Dental Medicine
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DOI: 10.5272/jimab.2019251.2327
Published online: 21 January 2019
Original article
J of IMAB. 2019 Jan-Mar;25(1):2327-2331
EVALUATION OF THE APICAL SEAL AFTER POST SPACE PREPARATION: IN VITRO STUDY
Elka Radeva1
, Desislava Tsanova-Tosheva1, Alexander Bonchev1, Rumen Radev2, Mario Gruncharov3, Martin Vloka2, Slavka Dimitrova3, Valena Ivancheva2,
1) Department of Conservative Dentistry, Faculty of Dental medicine, Medical University - Sofia, Bulgaria
2) Students 3rd course, Faculty of Dental medicine, Medical University - Sofia, Bulgaria
3) Students 5th course, Faculty of Dental medicine, Medical University - Sofia, Bulgaria.
ABSTRACT:
Introduction: Large crown destruction often leads to restoring endodontically treated teeth using post and core. As a result of post space preparation the integrity of the apical seal can be affect, thus increasing the chances of microleakage occurring.
Aim: The goal of the study is to observe and evaluate the quality of the apical seal after post space preparation.
Materials and Methods: 27 extracted single-rooted teeth were used. The coronal part was removed, and the root length was standardized to 15mm. The canals were prepared with Revo-S rotary system, irrigated with 5ml 5.25% sodium hypochlorite, saline, and 2ml 40% citric acid. The canals were filled with Adseal and gutta-percha using cold lateral condensation technique. The teeth were divided into two groups depending on post space preparation speed and one control group: first group (n=9) - 2800 rpm; second group (n=10) - 4700 rpm; control group (n=8) – with no preparation. Nail varnish was applied on the external root surface of the teeth except the apical 2mm, afterwards the teeth were insert in 2% methylene blue for 24 hours and then washed under running water for the same time. The teeth were cut longitudinally in a buccal-lingual direction so that the level of dye penetration between the root canal wall and the filling material could be visualized. The measurement was done in mm.
Results: The highest average value of apical penetration was observed in the second group (4700 rpm) - 1.10 mm. The difference of the apical penetration between group 2 (1.10 mm) and control group (0.25mm) is significant, while the average value of Group 1 (2800 rpm) does not differ statistically from the other two groups.
Concusion: Post space preparation combined with the higher speed of the drill canncrease the risk of damage the apical seal.
Keywords: apical sealing, apical microleakage, post space preparation,
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Please cite this article as: Radeva E, Tsanova-Tosheva D, Bonchev A, Radev R, Gruncharov M, Vloka M, Dimitrova S, Ivancheva V. Evaluation of the apical seal after post space preparation: in vitro study. J of IMAB. 2019 Jan-Mar;25(1):2327-2331. DOI: 10.5272/jimab.2019251.2327
Correspondence to: Assoc. prof. Elka Radeva, Department of Conservative Dentistry Faculty of Dental Medicine/Medical University, Sofia, Bulgaria; 1, Georgi Sofiiski blvd., 1431 Sofia, Bulgaria; E-mail: eliradeva@abv.bg
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Received: 24 August 2018
Published online: 21 January 2019