J Dent Rehabil Appl Sci.  2015 Jun;31(2):75-85. 10.14368/jdras.2015.31.2.75.

Discrimination between FRC-post and core according to the color difference

Affiliations
  • 1Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea. drendo@gwnu.ac.kr

Abstract

PURPOSE
The purpose of this study is to evaluate which FRC-posts were more distinguishable from core.
MATERIALS AND METHODS
Nine extracted single-rooted mandibular premolars with similar lengths (+/- 0.5 mm) and widths (+/- 0.5 mm) were endodontically treated and obturated. One specimen which the three roots were embedded in a cold mounting resin was made. 3 specimens were made by this method. Post spaces were prepared for the following post system: FRC Postec(R) Plus, MACRO-LOCK(TM) POST ILLUSION(TM) XRO(R), Snowpost(R). After three different posts were placed in the roots of a specimen, each three specimens received a direct core build-up: Luxacore(R) Dual A3, Luxacore(R) Dual blue, Filtek(TM) Z350 A1E. Digital images were taken of the post and core with and without air-blowing. We asked to fifty dentists and fifty dental college students which post was more clearly discriminated from the core.
RESULTS
In surveys, when core was Luxacore(R) Dual blue, among three types of posts people more easily discriminated the Snowpost(R) from core. When core was Luxacore(R) Dual A3, among three types of posts people similarly more easily discriminated Snowpost(R) from core. When core was Filtek(TM) Z350 A1E, among three types of posts people more easily discriminated distinguished MACRO-LOCK(TM) POST ILLUSION(TM) XRO(R) post from core. People more easily distinguished MACRO-LOCK(TM) POST ILLUSION(TM) XRO(R) post from core when temperature was lowered by air-blowing.
CONCLUSION
Ability to discriminate between FRC-post and core is different according to color contrast. MACRO-LOCK(TM) POST ILLUSION(TM) XRO(R) posts are more discriminable when temperature is lowered by air-blowing.

Keyword

MACRO-LOCK(TM) POST ILLUSION(TM) XRO(R) post; thermo-sensitive pigment; color difference; fiber post removal

MeSH Terms

Bicuspid
Dentists
Discrimination (Psychology)*
Humans
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