Evaluation of the effect of access cavity location on apical seal of maxillary anterior teeth
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2016, Vol 4, Issue 12
Abstract
The purpose of this study was to evaluate the effect of access cavity location on apical seal in maxillary anterior teeth.40maxillary incisors were selected. They are single root -one canal, with close apex, without caries and root cracks. The specimens were divided into 3 groups and negative and positive control groups (n=10) by random simple sampling. Group 1: teeth with lingual access cavity, Group 2: teeth with labial access cavity, Group 3: teeth with incisal access cavity. Root canal preparation was performed with step-back technique described by Mullaney. The canals were obturated with gutta-percha (Gapadent, china) and AH26 (Densply, USA) with laterally compaction technique. Axial surfaces of teeth were coated with 2 layer of nail varnish except apical foramen. In positive control group only one guttapercha cone was placed into canal without using nail varnish. In negative control group all surfaces of root even apical foramen was coated with 2layer of nail varnish. All groups were placed in methylene blue dye for 4 days. Then specimens were stored in open air for 24 hours to dye drying. Teeth were cut in buccolingual direction with fine diamond disc. They were evaluated for dye penetration in millimeters with stereomicroscope (25 times magnification). Data was analyzed by ANOVA test .There was no significant difference between 3 groups in dye penetration. But there was comparable trend in dye penetration. Location of access cavity preparation statically does not influence apical seal in anterior teeth. But incisal access cavity trends in minimal apical leakage. Lingual - cingulum access cavity preparation trends in maximum apical leakage. Keywords:apical leakage, access cavity location.
Authors and Affiliations
Zakiyeh Donyavi, Mohammad Esmaeilzadeh, ErfanAbbasi Atibeh, Faranak Amani
Keywords
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