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RISS 인기검색어
- 검색키워드
- 저자 : Lokade, Joyti (검색결과 5 건)
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Lokade, Joyti,Rawlani, Shivlal,Baheti, Rakhi (Chandak),Roy, Shelly,Chandak, Manoj,Lohe, Vidya Korean Academy of Dental Science 2011 Journal of korean dental science Vol.4 No.1
Purpose: Exact knowledge of the location and dimension of the pulp chamber help to maintain the pulp healthy during operative procedure and also reduces the risk of perforation of pulp chamber during root canal treatment. This in-vivo study was carried out to measure critical morphology of pulp chamber of mandibular molar using intra-oral periapical radiograph. Materials and Methods: Mandibular molar teeth of 56 patients were evaluated. The mandibular molar teeth whose pulp chamber was not violated by caries, restoration, fracture crown and those having closed apex were included in the study. The intraoral periapical radiographs were taken with paralleling angle technique using radio-opaque grid with 1 mm space. This grid was placed directly on the film. Results: In 94% of the mandibular first molars specimens the pulp chamber ceiling was at the level of the cemento-enamel junction. The measurements showing the lowest percentage variance were buccal cusp to furcation (approximately 11%) and buccal cusp to pulp chamber ceiling (approximately 15%). The distance from the cusp tip to pulp chamber ceiling height was approximately 6.0 mm, the distance from the pulpal floor to the furcation was approximately 3.0 mm, and the average height of a pulp chamber was 1.5 to 2.0 mm. Conclusion: The exact knowledge of distances of pulp chamber from various anatomical landmarks helps in proper assessment of root canals and ultimately avoids the failure of root canal treatment.
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Jyoti Lokade,Sattyam Wankhade,Shelly Roy,Monaj Chandak 대한예방치과학회 2012 International Journal of Clinical Preventive Denti Vol.8 No.3
Objective: This in vitro study compare and evaluate Fracture Resistance of roots filled with gutta percha-AH Plus sealer and Resilon Epiphany with cold lateral and warm vertical compaction techniques. Interface of dentin, sealer and core material of each group were also evaluated under scanning electron microscope. Methods: 125 single-canal extracted mandibular first premolars were divided into five groups: lateral and vertical compaction with gutta-percha/AH Plus sealer, lateral and vertical compaction with Resilon Epiphany, and a control group with no filling material. The samples were stored in 100 percent humidity for two weeks, mounted in acrylic resin and loaded to failure under Instron testing machine. One sample from each group was longitudinally sectioned, placed in dessicator, sputter coated with gold palladium and evaluated by using scanning electron microscope to check the interface of dentin, sealer and core filling material. Results: Resilon epiphany groups displayed higher mean fracture loads and the gutta-percha groups lower mean fracture load values than the control unfilled group. There is no gap seen between Resilon Epiphany & dentin in lower manification (500×) & gap seen between gutta percha, sealer & dentin interface. There was one microgap seen at 2,000× power SEM between the Resilon filling & dentin at middle 1/3rd. There was no gap at 2,000× power SEM between Resilon, Epiphany and dentin at coronal and apical third. Conclusion: Filling the root canals with Resilon/Epiphany increases the in vitro resistance to fracture of roots of extracted teeth with single canal.
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Sattyam Vikram Wankhade,Jyoti Lokade,Divya Devidas Naik,Nitesh Kumar Srivastava 대한예방치과학회 2017 International Journal of Clinical Preventive Denti Vol.13 No.1
Objective: Evaluation and comparison of the transverse strengths of Type IV and Type V gypsums, Resin modified type IV and type V gypsums, Synthetic gypsum and Epoxy resin die material, on setting and after a period of twenty four hours. Methods: Each die material was used to fabricate ten dies (39×6×6 mm), using polyvinyl siloxane impressions in standardized custom trays, that were tested for transverse strength in a Universal Testing machine, at setting. Another set of sixty dies were tested in a similar manner, 24 hours after setting. The one way ANOVA and Tukey multiple comparison tests were applied for statistical analysis. Results: The transverse strength values for epoxy resin were superior to the other materials being tested, at both time intervals. Type IV gypsum had higher transverse strength values than the other gypsum based materials at setting while at 24 hours, the resin modified materials ranked higher. A significant increase in the transverse strength (89%-146%) was noted when the gypsum based products were tested at twenty-four hours. Conclusion: When using gypsum based materials, one must wait at least 24 hours before retrieving the casts from impressions and proceeding with subsequent laboratory procedures.
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Effect of Chelating Agents and Irrigants on Mineral Content of Root Canal Dentin: An In Vitro Study
Keyur Pankaj Chande,Narendra U Manwar,Manoj G Chandak,Jyoti Lokade,Sneha R Chandak 대한예방치과학회 2014 International Journal of Clinical Preventive Denti Vol.10 No.3
Objective: To evaluate and compare ex vivo the decalcifying effect of 17% ethylenediaminetetraacetic acid (EDTA), 15% citric acid, 37% phosphoric acid and 5.25% sodium hypochlorite on root canal dentin. Methods: Two 2-mm-thick slices were cut from the coronal third of the root of 24 human incisors. Each slice was sectioned into two equal parts. Specimens were assigned to one of four groups (n=24) for immersion in 20 ml of either 17% EDTA, or 15% citric acid, 37% phosphoric acid or 5.25% NaOCl, for three time periods (5, 10, and 15 minutes). The concentration of Ca2+ extracted from the dentine was measured by mass spectrophometry.The amount of calcium extracted was analysed using the Kruskal-Wallis test for global comparisons and the Mann-Whitney U-test for pairwise comparisons. Results: In the three time periods, 17% EDTA and 15% citric acid extracted the largest amount of calcium, with no significant differences between them. The 5.25% NaOCl solution extracted significant amounts of calcium, whereas 17% EDTA extracted 9.3 mg of the calcium in the first 5 min, and 15% citric acid and 37% phosphoric acid had a similar pattern of calcium removal (2.06 mg and 1.82 mg in first 5 minutes, respectively). Conclusion: Solutions of 15% EDTA, 15% citric acid and 5% phosphoric acid decalcify root dentine, with most calcium extracted during the first 5 minutes of action. The efficacy of 15% citric acid and 17% EDTA solutions was significantly greater than that of 37% phosphoric acid solution at each time period (5, 10 and 15 minutes).
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