کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3148945 1197426 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of Push-out Bond Strength of Two Endodontic Post Systems
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی دندانپزشکی، جراحی دهان و پزشکی
پیش نمایش صفحه اول مقاله
Evaluation of Push-out Bond Strength of Two Endodontic Post Systems
چکیده انگلیسی

IntroductionThe aim of this study was to evaluate the push-out bond strengths of a new polyfiber post system and a fiber post that were adhesively luted with a dual-cure resin cement.MethodsForty single-rooted human maxillary teeth were sectioned below the cementoenamel junction, and the roots were endodontically treated. The roots were randomly divided into 2 groups of 20 specimens each according to the post type used: SpiraPost (group A; DMG, Englewood, NJ) and DT Light-Post Illusion X-RO (group B; Bisco Inc, Schaumburg, IL). All posts were cemented with dual-cure resin cement. Bonded specimens were cut into 1-mm-thick sections, and push-out tests were performed using a universal testing machine. All specimens were loaded until fracture, and the failure modes were evaluated with a stereomicroscope at 50× magnification. Representative specimens were analyzed by scanning electron microscopy.ResultsPush-out bond strength was significantly affected by the type of post (P < .05). In all root sections, the SpiraPost push-out bond strength values were significantly higher than that those of DT Light-Post Illusion X-RO (P < .05). Cohesive failure within the post was the most frequent type of failure for the SpiraPost system.ConclusionsIn all root segments, the SpiraPost system provided significantly increased post retention compared with the fiber post.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Endodontics - Volume 38, Issue 4, April 2012, Pages 510–514
نویسندگان
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