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Assessment of gingival margin thickness before margin placement
1Department of Prosthodontics, University of Texas Health Science Center, Dental School, San Antonio.
The Journal of Prosthetic Dentistry
|March 1, 1994
Summary
Metal matrix placement under gum tissue for dental crowns can cause gum discoloration. For aesthetic restorations, consider using all-porcelain margins to avoid this unwanted side effect.
Area of Science:
- Dental materials science
- Restorative dentistry
Background:
- Metal matrix placement beneath gingival tissue is used to simulate a metal collar in metal/ceramic crown restorations.
- Potential for metal matrix materials to cause gingival tissue discoloration exists.
Purpose of the Study:
- To evaluate the aesthetic implications of using metal matrix materials in dental restorations.
- To recommend alternative restorative materials when gingival discoloration is a concern.
Main Methods:
- Review of clinical cases involving metal/ceramic crown restorations with subgingival metal matrix placement.
- Assessment of gingival tissue color changes post-restoration.
Main Results:
- Gingival discoloration was observed in cases utilizing metal matrix materials.
- The discoloration is attributed to the presence of the metal matrix beneath the gingival tissue.
Conclusions:
- Metal matrix materials used in dental restorations can lead to undesirable gingival discoloration.
- All-porcelain margins are recommended as an alternative to prevent aesthetic compromise in such cases.