A STUDY OF THE MICROLEAKAGE AT THE POST AND CORE AND TOOTH INTERFACE.
- Author:
Ji Cheol SHIN
1
;
Sun Hyung LEE
;
Jae Ho YANG
;
Hun Young CHUNG
Author Information
1. Department of Prosthodontics, School of Dentistry, Seoul National University, Korea.
- Publication Type:Original Article
- MeSH:
Equipment and Supplies;
Prostheses and Implants;
Resin Cements;
Rosaniline Dyes;
Tooth*
- From:The Journal of Korean Academy of Prosthodontics
1998;36(2):366-378
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Post and core is used to restore endodontically treated teeth, and it is a very important part which supplies retention and support to the prosthesis. But occasionally, caries occurred due to the microleakage at the post and core and tooth interface, the failure of prosthesis has happened. In this study, the microleakage of cast gold post and core, amalgam core, and composite resin core was investigated and compared. The coronal part of the extracted upper anterior teeth were removed and endodontically treated with conventional method. The teeth were divided into three groups. In group 1, cast gold post and core was cemented with resin cement and in group 2, ready-made post was cemented with resin cement and amalgam core was built. In group 3, ready-made post was cemented with resin cement and composite resin core was built. All specimens were thermocycled between 5degrees C and 55degrees C with dwell time of 15 seconds, and immersed in 0.5degrees C aqueous solution of basic fuchsin dye for 24 hours. After embedded in the epoxy resin, the specimens were sectioned longitudinally and observed with stereomicroscope with the magnification of 25. From the findings of this study, the following conclusions were obtained. 1. There was microleakage at the core/tooth interface of all specimens. 2. The microleakage of gold post and core was significantly less than those of the other two groups. 3. There was no significant difference between the microleakage of amalgam core and that of composite resin core.
