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Rare Case Report on Nevus of Ota
Chandak, Rakhi,Degwekar, Shirish,Chandak, Manoj,Bhowte, Rahul,Rawlani, Shivlal Korean Academy of Dental Science 2010 Journal of korean dental science Vol.3 No.1
Nevus of Ota is a hamartoma of dermal melanocytes. Clinically, Nevus of Ota is manifested as blue or gray patch on the face; such condition is congenital or acquired and is within the distribution of branches of the trigeminal nerve. The nevus can be unilateral or bilateral. In addition to skin, it may involve ocular and oral mucosal surfaces. The case of an 18-year old female with unilateral bluish black macule on the right side of the face since birth is presented. She also had a bluish patch on the right shoulder at birth, which disappeared when she turned 10 years. The pathogenesis of Nevus is unknown, and effective treatment has been realized with pigment-specific lasers.
Keyur Pankaj. Chande,Narendra U. Manwar,Manoj G. Chandak 대한예방치과학회 2013 International Journal of Clinical Preventive Denti Vol.9 No.4
Objective: The aim of this study is to compare the effect of surface moisture on dentinal tensile bond strength. Methods: Eighty freshly extracted caries free Mandibular first molars were selected. The specimens were randomly divided into four groups of 20 teeth each. Occlusal surface were ground by diamond disc till all occlusal enamel is removed. After treating the occlusal surface of specimens with 37% orthophosphoric acid for 15 sec, specimens were divided into 4 groups namely. Group I (Over wet), Group II (Blot Dry), Group III (One Second Dry) and Group IV (Over Dry). Each group was treated with single bond adhesive (3M ESPE). Composite cylinders were build up using Teflon moulds and cured. Tensile bond strength was tested using INSTRON universal testing machine. The results were analysed statistically. Results: The tensile bond strength values were highest in Group II (Blot dry) and statistically significant. Conclusion: Blot drying after etching provided better bond strength.
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).
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.