Volume 20, Number 3 (Scientific Journal of Hamadan University of Medical Sciences-Autumn 2013)                   Sci J Hamadan Univ Med Sci 2013, 20(3): 240-246 | Back to browse issues page


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Mojarad F, Selahbarzin B. Comparison of the Fracture Resistance of 3 Different Posts in Restoring Extensively Damaged Primary Maxillary Incisors. Sci J Hamadan Univ Med Sci . 2013; 20 (3) :240-246
URL: http://sjh.umsha.ac.ir/article-1-130-en.html

Resident, Department of Pediatric Dentistry, School of Dentistry, Hamadan University of Medical Sciences & Health Services, Hamadan, Iran. , selahbarzinbehnoush@yahoo.com
Abstract:   (870 Views)

Introduction & Objective: The management of mutilated primary incisors in early childhood caries is a clinical challenge. This study's purpose was to compare the resistance strength of 3 different types of posts in restoring broken primary incisors: (1) composite posts, (2) ortho-dontic wire posts and (3) quartz fiber posts.

Materials & Methods: This semi experimental in vitro study was performed on 27 extracted human primary maxillary incisors. The coronal portion of specimens was sectioned 1-mm above the cementoenamel junction. Complete pulpectomy was performed for all specimens. The post space was created using a straight fissure bur approximately 3 mm. Samples were randomly divided into 3 groups. Group 1(composite posts and composite core), group 2(quartz fiber posts and composite core) and group 3 (orthodontic γ wire posts and composite core). Mounted specimens were subjected for fracture strength on an instron testing ma-chine at 45 angles.

Results: Mean fracture strength value for group 1 was 248.9±72.36 N, group 2 was 446.7±116.4 N and group 3 was 365.6±31.3. This result showed significant differences among the three groups.

Conclusion: Quartz fiber posts showed greater fracture strength for extensively damaged primary incisors than composite posts and orthodontic wire posts.

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Type of Study: Original | Subject: Special

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