J Korean Acad Prosthodont.  2014 Apr;52(2):74-81. 10.4047/jkap.2014.52.2.74.

In vitro study of microleakage of endodontically treated teeth restored with different adhesive systems and fiber-reinforced posts

Affiliations
  • 1Department of Prosthodontics, College of Dentistry, Dankook University, Cheoan, Republic of Korea. yu0324@hanmail.net

Abstract

PURPOSE
While studies have examined microleakage in endodontically treated teeth restored with posts, microleakage among post and adhesive systems remains a concern. This study compared the sealing properties of 3 adhesively luted post systems.
MATERIALS AND METHODS
Thirty-six endodontically treated permanent maxillary central incisors were divided into 3 groups: Zirconia-glass fiber, Quartz-glass fiber, Polyethylene fiber posts. Post space was prepared and each post was adhesively luted with 3 systems. The specimens were separately immersed in freshly prepared 2% methylene blue solution for 1 week. The cleaned specimens were then embedded in autopolymerizing acrylic resin. The root portion of tooth were horizontally sectioned into three pieces (apical, middle, and coronal portions). An occlusal view of each section was digitally photographed with a stereomicroscope. The methylene blue-infiltrated surface for each specimen was measured. Dye penetration was estimated as the ratio of the methylene blue-infiltrated surface to the total dentin surface.
RESULTS
No significant differences were found among post types. The variables of middle section and 3-stage adhesive produced significant differences in microleakage between the following post pairs: zirconia-glass fiber versus quartz-glass fiber, zirconia-glass fiber versus polyethylene fiber, and quartz-glass fiber versus polyethylene fiber (P<.05). There were significant differences between the apical and coronal sections of each post type, and between apical versus middle sections of quarze-glass fiber and polyethylene fiber posts (P<.05).
CONCLUSION
No significant differences were found among post types. The 3-stage adhesive produced significant differences in microleakage between the following post pairs.

Keyword

Fiber-reinforced post; Adhesive systems; Microleakage; Resin cement

MeSH Terms

Adhesives*
Dentin
Incisor
Methylene Blue
Polyethylene
Resin Cements
Tooth*
Adhesives
Methylene Blue
Polyethylene
Resin Cements
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