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Hydroxyl ion diffusion through intact and resorbed roots at various time intervals.
Nasrin Roghanizad1, Fatemeh Bahreini2, Mehdi Vatanpour1
1Department of Endodontics, Dental Branch, Islamic Azad University of Medical Sciences, Tehran, Iran.
Iranian Endodontic Journal
|April 30, 2014
Summary
Calcium hydroxide dressing effectively increased root surface pH in both intact and resorbed roots over 4 weeks. The pH levels remained significantly elevated compared to baseline, indicating successful ion diffusion.
Area of Science:
- Endodontics
- Biomaterials Science
- Dental Research
Background:
- Root surface pH changes are critical in endodontic treatment.
- Calcium hydroxide is a common intracanal medicament.
- Understanding its effect on intact versus resorbed roots is important.
Purpose of the Study:
- To investigate root surface pH changes over 4 weeks.
- To compare pH changes in intact versus resorbed roots treated with calcium hydroxide.
Main Methods:
- 30 single-rooted teeth were instrumented and divided into intact, resorbed, and control groups.
- Resorption defects were simulated, and teeth were exposed to sulfuric acid.
- Calcium hydroxide or saline was placed in root canals, and surrounding water pH was monitored for 28 days.
Main Results:
- pH values generally increased over the 28-day study period.
- Maximum average pH values (7.67-7.72) were observed at day 28.
- Significant pH increases were noted at various time points compared to baseline.
Conclusions:
- Hydroxyl ion diffusion was comparable between intact and resorbed roots.
- Calcium hydroxide treatment resulted in significantly elevated pH levels in both root types compared to baseline.
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