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Seal capability of interim post and core crown with temporary cements
Guilherme Bönecker-Valverde1, Claudio Maniglia-Ferreira, Gisele Priscila Abi-Rached
1Department of Periodontics and Prosthodontics, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil. guigavalverde@yahoo.com
Brazilian Oral Research
|July 27, 2010
Summary
Interim post and core crowns showed some leakage, with specific luting agents and preparation methods influencing the degree of microleakage. Further research is needed to optimize these restorations for better marginal seal.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
Background:
- Interim post and core crowns are crucial for temporary restorations.
- Evaluating their sealing capability is essential to prevent secondary caries and pulpal issues.
Purpose of the Study:
- To assess the in vitro microleakage of interim post and core crown restorations.
- To compare the effects of different luting agents and preparation techniques on seal capability.
Main Methods:
- Eighty teeth were divided into 8 groups, with experimental groups receiving interim posts and core crowns luted with either Rely X Temp NE or Hydro C.
- Teeth were prepared at different levels (cementum-enamel junction or 2 mm coronal), and control groups were established.
- Dye penetration was used to evaluate microleakage, with measurements taken from digital images using Image Tool 3.0 software.
Main Results:
- Groups PCrZO and PCrCH exhibited the least dye penetration, indicating better sealing.
- Groups PCZO and PCCH showed moderate leakage.
- Control groups and those without interim restorations served as baseline comparisons.
Conclusions:
- Interim post and core crown restorations are susceptible to microleakage.
- The choice of luting agent and the preparation method (sectioning level) significantly impact the sealing ability.
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