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A comparative sealability study of different retrofilling materials
International Endodontic Journal
|July 1, 1993
Summary
Glass ionomer cement with varnish demonstrated superior sealing ability compared to high-copper amalgam and silver glass ionomer cement in retrofilling procedures. Silver glass ionomer cement without varnish showed the highest dye penetration, indicating poorer sealing performance.
Area of Science:
- Dentistry
- Dental Materials Science
- Endodontics
Background:
- Effective sealing of root canal retrofillings is crucial for endodontic treatment success.
- Various materials, including high-copper amalgam, glass ionomer cement (GIC), and silver glass ionomer cement (SGIC), are used as retrofilling agents.
- The influence of cavity varnish on the sealing ability of these materials requires further investigation.
Purpose of the Study:
- To compare the sealing ability of high-copper amalgam, GIC, and SGIC as retrofilling materials.
- To evaluate the effect of using cavity varnish in conjunction with these retrofilling materials.
- To determine the optimal material and technique for achieving superior apical seal in endodontic retrofillings.
Main Methods:
- Seventy extracted human single-rooted anterior teeth were prepared and obturated.
- Apical 3 mm resected, with a 2 mm-deep Class I preparation created.
- Teeth were randomly allocated to six groups (n=10) using high-copper amalgam, GIC, or SGIC, with or without cavity varnish, and immersed in methylene blue dye for 14 days.
- Dye penetration was assessed after vertical sectioning under a stereomicroscope.
Main Results:
- Conventional glass ionomer cement used with varnish exhibited significantly better sealing ability (lower dye penetration) compared to other groups (P < 0.01).
- Silver glass ionomer cement without varnish showed the highest degree of dye penetration, indicating the least effective seal.
- High-copper amalgam and glass ionomer cement without varnish showed intermediate sealing capabilities.
Conclusions:
- Conventional glass ionomer cement, when combined with cavity varnish, provides superior sealing performance for retrofilling procedures.
- Silver glass ionomer cement without varnish is less effective in preventing microleakage.
- The use of cavity varnish can enhance the sealing ability of certain retrofilling materials, particularly glass ionomer cement.