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Calcium hydroxide retention in wide root canals with flaring apices
Z Metzger1, M Solomonov, E Mass
1Department of Restorative Dentistry, Goldschleger School of Dental Medicine, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel. metzger@post.tau.ac.il
Summary
Condensing calcium hydroxide (CH) paste improves its retention in wide root canals during apexification. Barium sulfate as a radiopacifier hinders monitoring CH loss, suggesting its discontinuation.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Calcium hydroxide (CH) is crucial for apexification in immature, pulpless teeth with wide canals.
- Effective placement and monitoring of CH are essential for successful apexification outcomes.
Purpose of the Study:
- To compare the in vitro retention of calcium hydroxide using three different placement methods.
- To evaluate the effect of barium sulfate as a radiopacifier on monitoring CH retention and detecting voids.
Main Methods:
- Three placement techniques for calcium hydroxide were tested in vitro.
- Teeth filled with CH were incubated in a shaker water bath, with weekly radiographs taken.
- Quantitative image analysis using a computerized gray scale assessed CH retention and voids.
Main Results:
- Condensed calcium hydroxide demonstrated superior retention in root canals compared to lentulo-placed or injected paste.
- Barium sulfate improved void detection but obscured the assessment of CH disappearance due to residual radiopacity.
Conclusions:
- Condensation is the preferred method for improved calcium hydroxide retention in wide root canals during apexification.
- Barium sulfate should not be used as a radiopacifier in apexification due to its interference with monitoring material loss.