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| 2010-22 |
| 22-1 |
ISSN (Print) 1013-9052
EISSN 1658-3558
The Saudi Dental Journal,
P.O. Box 52500,
Riyadh 11563,
Kingdom of Saudi Arabia
P.O. Box 52500,
Riyadh 11563,
Kingdom of Saudi Arabia
| Tel. |
966-1-467-7328 |
| Fax. |
933-1-467-7308 / 966-1-467-7534 |
| Email |
saudidj@ksu.edu.sa |
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Quantitation of microleakage from root canals obturated by four different techniques
Abdulla S. Al Yahya B.D.S., M.S.
The reference-controlled reverse diffusion method was used to quantitate mieroleakage from root canals. The canals were obturated using one of four different techniques: Thermafil, Obtura, lateral condensation or vertical condensation. The radioactive material was placed inside the obturated canals and was allowed to leak in the surrounding medium. The quantity of mieroleakage was determined at various time intervals and up to 463 days relative to mieroleakage quantities occurring from open canals. Using the quantitative data obtained from 2016 aliquot samples, a linear relationship was established between the predicted quantity of mieroleakage and time for each obturation method. Each linear relationship yielded a mieroleakage onset value (KJ and a rate of mieroleakage (n). While Thermafil resulted in the lowest mieroleakage onset, it permitted the largest mieroleakage rate over time. Lateral condensation showed strong mieroleakage onset, yet the least mieroleakage rate. Vertical condensation permitted the strongest mieroleakage onset (2.6 times that of Obtura), yet its mieroleakage rate was essentially equal to that of Obtura. The quantitative data and its linear analyses explains the diversing literature reports and furnishes an opportunity to objectively quantitate mieroleakage in endodontics.
Saudi Dental Journal 1998;10(2):52-59.
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