A SPIRAL COMPUTER TOMOGRAPHIC ANALYSIS OF VARIOUS OBTURATION TECHNIQUES IN SIMULATED INTERNAL RESORPTIVE CAVITIES – AN IN VITRO STUDY
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Keywords
Calamus, Guttaflow, Lateral compaction, Obturation, Simulated internal resorptive cavities, Spiral CT scan.
Abstract
Aim:To assess and evaluate efficacy of three different obturation techniques in natural teeth with simulated internal resorption cavities using Spiral CT scan.
Methodology: 30 single rooted teeth (adjusted to length 16 mm) are selected. Chemomechanical preparation is done using 2.5% NaOCl and 17% EDTA alternatively to the master apical file size 40.Teeth are sectioned horizontally with a fine diamond disc 6mm from apex.Semi circular cavities with no.6 round diamond bur are made around the periphery of each section simulating internal resorption cavities.Sections are cemented with cyanoacrylate adhesive and teeth are embedded in wax. Teeth are then divided into three groups of 10 each. The teeth are then obturated as follows - Group 1 : Lateral compaction technique, Group 2 : Thermo plasticized GP technique – non carrier based ( Calamus ),Group 3 : Chemically plasticized GP technique ( Guttaflow ). Teeth are stored for 7 days at room temperature. The obturated teeth are then evaluated using spiral CT scan.
Results: Among the three groups, Calamus has obturated with greatest volume with statistical difference. Gutta flow was the next best but was statistically not significant compared to lateral compaction group. Lateral compaction group had the least percentage of volume filled.
Conclusion: The study indicates that in case of internal resorptive defects it is better to adapt a warm vertical compaction technique for obturation than Guttaflow or lateral compaction obturation techniques.
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Mohammed Khwaja Moinuddin
Assistant professor, Department of Oral Health Sciences, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
Nimeshika Ramachandruni
Professor Department of Conservative And Endodontics Mallareddy Dental College for Women
Mallareddy Viswa Vidya Peet, Sruram, Hyderabad, Telangana, India