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Padda, Bhupinder Kaur
- An in Vitro Comparison of the Apical Seal Produced by Three Different Thermoplasticized Guttapercha Obturation Techniques in Oval Canals
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PDF Views:116
Authors
Affiliations
1 Department of Conservative Dentistry & Endodontics, Himachal Institute of Dental Sciences, Himachal Pradesh, IN
2 Department of Prosthodontics, Bhojia Dental College & Hospital, Himachal Pradesh, IN
3 Department of Conservative Dentistry & Endodontics, Swami Devi Dyal Dental College, Haryana, IN
1 Department of Conservative Dentistry & Endodontics, Himachal Institute of Dental Sciences, Himachal Pradesh, IN
2 Department of Prosthodontics, Bhojia Dental College & Hospital, Himachal Pradesh, IN
3 Department of Conservative Dentistry & Endodontics, Swami Devi Dyal Dental College, Haryana, IN
Source
Dental Journal of Advance Studies, Vol 3, No 1 (2015), Pagination: 39-46Abstract
The aim of this study was to evaluate and compare the sealing ability to obturate oval canals with three thermoplasticized guttapercha obturation techniques taking lateral condensation technique as the control. Ninety-five freshly extracted teeth were decoronated at2mmcoronal to CEJ. Biomechanical preparation was done using step back technique. The teeth were divided into three experimental groups of 30 teeth each and one control group of 5 teeth. The group I (control group) was obturated with lateral condensation technique, group II obturated with injectable thermoplasticized guttapercha technique, group III obturated with thermoplasticized guttapercha with downpack and backfill technique and group IV obturated with core carrier thermoplasticized guttapercha technique. The sealability of each technique was assessed by a dye penetration method. The ischolar_mains were given two full layers of nail polish varnish except apical 2mm. Specimens were then immersed in India ink for 48 hours. Robertson's technique was used to clear the specimens. The linear dye penetration was measured from anatomic apex to the deepest extent of dye penetration in a coronal direction using triocular stereomicroscope at 10 x magnification. The mean dye leakage of group I was 2.6700mm; group II 0.1713mm; group III 3.3977mm; group IV 2.3210mm . When the means of all the four groups were compared using KruskalWallis test the difference was found to be very highly significant with the value<.001**, meaning there by that group II is significantly better than the other three groups as far as sealing ability is concerned.Keywords
Apical Seal, Lateral Condensation, Injectable Thermoplasticized Guttapercha, Downpack and Backfill, Thermaflo.Full Text
- Computed Tomography Assessment of Canal Centering Ability Using Hand and Rotary Instruments-An in Vitro Study
Abstract Views :186 |
PDF Views:81
Materials and Methods: Sixty extracted permanent teeth were selected and decoronated at 11 mm from the apical end. Samples were randomly divided into 4 groups as ProTaper, Mtwo,Wave One, Hand Ni-Ti K-files. Teeth were scanned by CT Scanner. Sectioning was started at 1 mm from the apex up to coronal orifice. Nine levels at 1 mm each were chosen for evaluation in the Computed Tomography. The canals were prepared and a post instrumentation scan was again taken. The pre and postoperative CT images were superimposed at all nine levels. The canal centering ability was calculated. Statistical data was evaluated using OneWay Analysis Of Variance test.
Results: Amongst the rotary and reciprocal groups the best canal centering ability at the apical third was seen withWave one. All the three groups behaved similarly in the middle and coronal thirds of the ischolar_main canal.
Conclusion: Keeping in mind the importance of apical third preparation and consistent behaviour in all directions, Wave One may be considered by far the best in the apical third.
Authors
Affiliations
1 Dept. of Conservative Dentistry & Endodontics, Maharaja Ganga Singh Dental College & Research Centre, Rajasthan, IN
2 Dept. of Conservative Dentistry & Endodontics, National Dental College, Punjab, IN
3 Dept. of Conservative Dentistry & Endodontics, Hazaribag College of Dental Sciences and Hospital, Jharkhand, IN
1 Dept. of Conservative Dentistry & Endodontics, Maharaja Ganga Singh Dental College & Research Centre, Rajasthan, IN
2 Dept. of Conservative Dentistry & Endodontics, National Dental College, Punjab, IN
3 Dept. of Conservative Dentistry & Endodontics, Hazaribag College of Dental Sciences and Hospital, Jharkhand, IN
Source
Dental Journal of Advance Studies, Vol 4, No 3 (2016), Pagination: 165-169Abstract
Aim: The present in vitro study aims to evaluate canal preparation comparing centering ability of ProTaper, Mtwo ,Wave One, Hand Ni-Ti K-files using Computed Tomography(CT).Materials and Methods: Sixty extracted permanent teeth were selected and decoronated at 11 mm from the apical end. Samples were randomly divided into 4 groups as ProTaper, Mtwo,Wave One, Hand Ni-Ti K-files. Teeth were scanned by CT Scanner. Sectioning was started at 1 mm from the apex up to coronal orifice. Nine levels at 1 mm each were chosen for evaluation in the Computed Tomography. The canals were prepared and a post instrumentation scan was again taken. The pre and postoperative CT images were superimposed at all nine levels. The canal centering ability was calculated. Statistical data was evaluated using OneWay Analysis Of Variance test.
Results: Amongst the rotary and reciprocal groups the best canal centering ability at the apical third was seen withWave one. All the three groups behaved similarly in the middle and coronal thirds of the ischolar_main canal.
Conclusion: Keeping in mind the importance of apical third preparation and consistent behaviour in all directions, Wave One may be considered by far the best in the apical third.
Keywords
Canal Centering, Computed Tomography, Hand Ni Ti K Files, Mtwo, Wave One.Full Text