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Shear bond strength of endodontic sealers to dentin with and without smear layer and gutta percha : an in vitro study
Joint Authors
al-Hashimi, Majidah K.
Hasan, Rana Kazim
Source
Journal of Baghdad College of Dentistry
Issue
Vol. 26, Issue 4 (31 Dec. 2014), pp.86-89, 4 p.
Publisher
University of Baghdad College of Dentistry
Publication Date
2014-12-31
Country of Publication
Iraq
No. of Pages
4
Main Subjects
Abstract AR
أن لقوة الرابطة لسدادات قناة الجذرالى عاج السن و Gutta-percha خاصیة مھمة للحفاظ على ثبات حشوة قناة الجذر الذي بدوره یؤثر على تسرب و قوة الجذر.
كان الغرض من ھذه الدراسة تقییم قوة الترابط القصي بین ثلاثة أنواع من السدادات اللبیة المختلفة (,AH Plus, Gutta-FlowApexit Plus) و عاج السن بوجود أو عدم وجود طبقة الـ Smear layer و الـ Gutta-percha.
بعد قطع2ملمیتر من تاج 60 سن من أسنان الإنسان (الضواحك العلیا).
تم تثبیت الأسنان في مادة الاكریلیك، و قسمت إلى مجموعتین وفقا لوجود طبقة الـSmear layer.
المجموعة (أ) بدون Smear layer على سطح عاج السن مع غسل بمادة 17 EDTA % یلیھ الماء المقطر و قسمت إلى 3مجموعات فرعیة وفقا لنوع السدادة المستعملة (-AP) .D, AH-D, GF-D المجموعة (ب) غسل سطح عاج السن بالماء المقطر فقط ثم قسمت إلى 3 مجموعات فرعي) (APD-S, AHD-S, GFD-S .
ثلاثون عینة من (Gutta-percha) أعدت لتكون المجموعة (ج) و قسمت إلى 3 مجموعات فرعیة (AP-G, AH-G, GF-G) .استعمل أنبوب بطول 5 ملم من البولي اثیلین بسداده مخلوطة حدیثا و وضع على سطح عاج السن أو الـ Gutta-percha اختبار قوة الرابط القصي تم بعد أسبوع .تم حساب البیانات بوحدة المیغا باسكال و تم تحلیلھا إحصائیا.
أظھرت النتائج فرقا معنویا كبیرا .Gutta-Flow سجل فرق معنوي غیر ملحوظ في قوة الترابط مع عاج السن بوجود أو عدم وجود الـ Smear layer بینما AH Plus و Apexit Plusسجلوا فرقا معنویا عالیا.
الاستنتاج النھائي : AH Plus أظھر أعلى قوة ربط قصي في جمیع العینات بینما كان Gutta-Flow الأقل بینھم.
و قوة الربط القصي للـ AH Plus و Apexit plus تأثرت بإزالة طبقة Smear layer إلى الأحسن أما Gutta-Flow فلم تتأثر.
Abstract EN
Background : The bond strength of root canal sealers to dentin and gutta-percha seems to be an important property for maintainig the stability of root canal filling, which potentially influences both leakage and root strength.
The objective of this, in vitro, study was to evaluate the shear bond strength of three different endodontic sealers (Gutta-Flow, AH Plus, Apexit Plus) to dentin, in the presence and absence of the smear layer and gutta percha.
Material and Methods : After slicing off the occlusal 2mm of 60 extracted human maxillary premolar teeth, the exposed dentin served as the tested surfaces ; the teeth were fixed with cold cure acrylic, and were divided into two groups according to the smear layer presence, group A without smear layer, when dentin surfaces were irrigated with EDTA 17 % followed by distilled water then subdivided into 3 subgroups according to the type of sealer used ; group B when dentin surfaces were washed with distilled water only, then subdivided into 3 subgroups.
Thirty samples of gutta-percha were prepared and named as group C which was subdivided into 3 subgroups.
Five mm long section of polyethylene tubes were placed on the dentin or gutta percha surfaces and filled with freshly mixed sealer.
After one week, all the samples were tested for shear bond strength by the Instron Universal Testing Machine at a cross head speed of 0.5 mm / min.
The data was calculated in MPa and was statistically analyzed Result : There was a highly significant difference in the shear bond strength (P < 0.05) in comparison among the tested groups, GuttaFlow showed non-significant difference in bond strength to dentin with and without smear layer, while AH Plus and Apexit Plus showed a high significant difference.
Conclusions : AHPlus showed the highest shear bond strength in all the tested samples, while GuttaFlow was the least.
Additionally, AH Plus and Apexit Plus shear bond strengths were affected by the smear layer removal, while GuttaFlow was not.
American Psychological Association (APA)
Hasan, Rana Kazim& al-Hashimi, Majidah K.. 2014. Shear bond strength of endodontic sealers to dentin with and without smear layer and gutta percha : an in vitro study. Journal of Baghdad College of Dentistry،Vol. 26, no. 4, pp.86-89.
https://search.emarefa.net/detail/BIM-433527
Modern Language Association (MLA)
Hasan, Rana Kazim& al-Hashimi, Majidah K.. Shear bond strength of endodontic sealers to dentin with and without smear layer and gutta percha : an in vitro study. Journal of Baghdad College of Dentistry Vol. 26, no. 4 (Dec. 2014), pp.86-89.
https://search.emarefa.net/detail/BIM-433527
American Medical Association (AMA)
Hasan, Rana Kazim& al-Hashimi, Majidah K.. Shear bond strength of endodontic sealers to dentin with and without smear layer and gutta percha : an in vitro study. Journal of Baghdad College of Dentistry. 2014. Vol. 26, no. 4, pp.86-89.
https://search.emarefa.net/detail/BIM-433527
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 89
Record ID
BIM-433527