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Radiographic and microscopic evaluation of the efficacy of two different techniques in obt-uration of internal resorption defects (An in vitro comparative study)

Author: Ragheed M Basheer
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2005 Volume: 5 Issue: 5 Pages: 83-87
Publisher: Mosul University جامعة الموصل

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Abstract

This study was designed to determine the effectivenessof lateral compaction and ultrasonic condensation obturationtechniques for internal resorption defects, for which 20 extractedhuman maxillary central incisors teeth were selected.They were instrumented up to size 55 file. Their roots weresectioned transversely 6 mm from the apex and hemicircularcavities were prepared in both sections using #6 round bur.The sections were glued back together using cyanoacrylatethus obtaining root canal with cavities simulating internal resorption.The teeth were randomly divided into 2 groups of 10teeth each. The following obturation techniques were evaluated:Lateral compaction (Group I), and ultrasonic condensation(Group II). Ultrasonic condensation gave good results.Obturated internal resoption defects were filled mainly withgutta percha. Statistical analysis showed that there was significantdifference between Groups I and II. Results with lateralcondensation were inferior compared to ultrasonic condensationtechnique for obturation of simulated internal resorptiondefects Therefore, the latter technique is recommended to beused to obturate the defects of internal resorption defects inclinical practice.

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