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KMID : 1004520150310020075
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Journal of Dental Rehabilitation and Applied Science
2015 Volume.31 No. 2 p.75 ~ p.85
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Discrimination between FRC-post and core according to the color ifference
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Kim Jou-Hwe
Kim Jin-Woo
Cho Kyung-Mo
Park Se-Hee
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Abstract
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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® Plus, MACRO-LOCKTM POST ILLUSIONTM XRO®, Snowpost®. After three different posts were placed in the roots of a specimen, each three specimens received a direct core build-up: Luxacore® Dual A3, Luxacore® Dual blue, FiltekTM 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® Dual blue, among three types of posts people more easily discriminated the Snowpost® from core. When core was Luxacore® Dual A3, among three types of posts people similarly more easily discriminated Snowpost® from core. When core was FiltekTM Z350 A1E, among three types of posts people more easily discriminated distinguished MACRO-LOCKTM POST ILLUSIONTM XRO® post from core. People more easily distinguished MACRO-LOCKTM POST ILLUSIONTM XRO® 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-LOCKTM POST ILLUSIONTM XRO® posts are more discriminable when temperature is lowered by air-blowing.
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KEYWORD
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MACRO-LOCKTM POST ILLUSIONTM XRO® post, thermo-sensitive pigment, color difference, fiber post removal
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