Browsing by Author "Reddy, V V"
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Item Carotenogenesis in ripening mangoes.(1967-10-01) Modi, V V; Reddy, V VItem Childhood thrombocytopenic purpura--review and a case report.(1996-07-01) Reddy, V V; Rawal, Y BChildhood idiopathic thrombocytopenic purpura is a rare condition seen in children. A case of a 10 year old female child is reported. Bleeding from the gingiva and petechiae on the tongue were observed. The blood picture was normocytic normochromic with neutrophilia and thrombocytopenia. Bone marrow study was suggestive of marrow changes in idiopathic thrombocytopenic purpura. Dental extractions were postponed. Recognition of the disease by the dental profession is stressed.Item Clinical and radiological evaluation of zinc oxide-eugenol and Maisto's paste as obturating materials in infected primary teeth--nine months study.(1996-06-01) Reddy, V V; Fernandes,The present study, performed in-vivo, included 30 infected primary teeth in 26 children in the age group of 3-8 years. The purpose of this study was to compare the efficacy of two obturating materials, zinc oxide-eugenol and Maisto's paste, in infected primary teeth. 30 teeth were divided into two groups of 15 teeth. Teeth in Group I were obturated using zinc oxide-eugenol and those in Group II were obturated using Maisto's paste. On clinical evaluation, teeth obturated with Maisto's paste showed 100% success. Five teeth that were overfilled with Maisto's paste showed complete resorption of excess material within 3 months while the two teeth overfilled with zinc oxide-eugenol showed incomplete resorption of the excess material even after 9 months. Zinc oxide-eugenol treated cases showed only 26.7% bone regeneration while in case of Maisto's paste, it was 93%. Complete healing of the inter-radicular pathology was seen with Maisto's paste. However, the pathology was present in 40% of the zinc oxide-eugenol treated teeth even after 9 months. Maisto's paste was thus seen to be superior to zinc oxide-eugenol both in clinical as well as radiological evaluation, done over a period of 9 months in relation to bone regeneration, healing of inter-radicular pathology and resorption of excess material.Item A comparative study of retentive strengths of zinc phosphate, polycarboxylate and glass ionomer cements with stainless steel crowns--an in vitro study.(1998-03-30) Reddy, R; Basappa, N; Reddy, V VThis study was conducted on 30 extracted human primary molars to assess the retentive strengths of zinc phosphate, polycarboxylate and glass ionomer cements. The teeth were embedded in resin blocks and were randomly divided into 3 groups of 10 each. The occlusal surfaces of all teeth were reduced uniformly by 1.0 to 1.5 mm. All mesial, distal undercuts were removed and sharp angles rounded. This was followed by cementing pretrimmed and precontoured stainless steel crowns on each tooth with hand pressure and storing in artificial saliva at 37 degrees C for 24 hours. Retentive strength was tested using Instron Universal Testing Machine. The load was applied starting from a zero reading and gradually increased until the cemented stainless steel crowns showed signs of movement and then the readings were recorded. It was found that retentive strengths of zinc phosphate and glass ionomer cements were statistically better (P < 0.05) when compared to the polycarboxylate cement. Negligible difference (0. 59 kg/cm2) was however observed between zinc phosphate and glass ionomer cements.Item A comparison of bitewing radiography and fibreoptic illumination as adjuncts to the clinical identification of approximal caries in primary and permanent molars.(1994-04-01) Reddy, V V; Sugandhan, SA clinical study was conducted on 150 approximal surfaces which were positive for caries by fibreoptic transillumination (FOTI), and these approximal surfaces were examined with bitewing radiography. Of these 54.7% and 41.3% were diagnosable through bitewing radiography and clinical examination respectively. And it was clearly understood that FOTI was a reliable method in detecting approximal carious lesions.Item Configuration of root canals in permanent mandibular first molars--an in vitro study.(1996-03-01) Prakashchandra,; Reddy, V VThe study attempts to show a number of variations in the root canal morphology of permanent mandibular first molar. The presence of variations increases the chance of failure of endodontic treatment. Knowledge about internal anatomy of the teeth is very essential for a favourable prognosis.Item A dermatoglyphic predictive and comparative study of Class I, Class II, div. 1, div.2 and Class III malocclusions.(1997-03-01) Reddy, S; Prabhakar, A R; Reddy, V VA study was conducted using dermatoglyphics to predict and compare Class I, Class II, div. 1, div.2 and Class III malocclusions. A total of 96 subjects were divided into 3 malocclusion groups, i.e. Class I (control group), Class II, div.1, div.2 and Class III (experimental group) in the ages of 12-14 years. The dermatoglyphic findings revealed that the craniofacial Class II, div. 1, div.2 pattern was associated with increased frequency of arches and ulnar loops and decreased frequency of whorls, whereas in Class III, there was an increased frequency of arches and radial loops with decreased frequency of ulnar loops. In predicting Class III malocclusion, based on frequency of arches, the sensitivity values were found to be higher and more reliable than the sensitivity values of Class II, div.1 and div.2 malocclusion.Item Detection of paroxysmal nocturnal hemoglobinuria-phenotype in patients with chronic lymphocytic leukemia and multiple myeloma.(2012-04) Varma, S; Varma, N; Reddy, V V; Naseem, S; Bose, P; Malhotra, PBackground : Paroxysmal nocturnal hemoglobinuria (PNH) results due to decrease or absence of glycosylphosphatidylinositol-anchored (GPI) molecules, such as CD55 and CD59, from the surface of the affected cells. PNH-phenotype has been described in various hematological disorders, mainly aplastic anemia and myelodysplastic syndromes; recently it has been reported in patients with lymphoproliferative syndromes and multiple myeloma (MM). Materials and Methods : We evaluated the presence of CD55 negative and/or CD59 negative red blood cell (RBC) populations in newly diagnosed treatment naive-54 chronic lymphocytic leukemia (CLL) and 29 MM patients by flow cytometry. Results : PNH-phenotype was not reported in any patient; however, RBC populations deficient in CD55 were detected in 16.66% (9/54) CLL and 6.89% (2/29) MM patients. Clinical presentation or the hematological parameters did not show any relationship with the presence of CD55 deficient RBC population. Conclusion : Our study showed absence of PNH-phenotype in patients with CLL and MM; however, isolated CD55 deficient RBC were identified in both CLL and MM. Larger prospective studies by other centers, including simultaneous analysis of granulocytes for the presence of PNH-phenotype, are needed to corroborate these findings and to work out the mechanisms and the significance of the existence of this phenotype in these patients.Item Efficacy of acidulated phosphate fluoride in the prevention of dental caries--a 2 1/2 years study.(1983-03-01) Tewari, A; Chawla, H S; Reddy, V VItem An evaluation of pH changes of human dental plaque after oral rinsing of commonly prescribed syrup medications.(1994-03-01) Srinivas, N; Reddy, V VThe study was carried out on 60 school going children (dft/DMFT 2-5) aged 8-13 years randomly distributed into six age groups of ten subjects each. One group acted as a control in which subjects rinsed with 10% sucrose while in the other five groups, the subjects rinsed with 5 commonly prescribed syrup medications for 10 seconds. Plaque samples were collected before rinsing and at 5,10,20,30 min. intervals post rinsing and plaque pH was measured extraorally. All the 5 groups showed drop in the plaque pH, similar to control group 10% sucrose solution, but not to the extent of critical pH (5.5).Item Giant aneurysm of intra cavernous internal carotid artery (a case report).(1981-07-01) Reddy, D R; Muralidhar, B; Rajyalakshmi, K; Seetharam, W; Reddy, V V; Varma, M JItem An in vitro comparative evaluation of the tensile bond strength at the two interfaces of the sandwich technique.(1995-08-01) Rao, V; Reddy, V VThis study was conducted to compare the tensile bond strength at the two interfaces of the "sandwich technique". 48 hours after the specimens were tested, using Hounsfield tensometer. Load was gradually applied on to the specimen till the bond at the interface failed. The load at which the bond failed was recorded and analysed for statistical significance. From the present study it can be concluded that the bond between glass ionomer and dentine is better than the bond between glass ionomer and composite resin.Item In vitro evaluation of micromarginal leakage of three filling systems--an autoradiographic analysis using radio isotope S35 as a tracer.(1993-03-01) Mohandas, U; Reddy, V VAn in vitro study was carried out on 60 human pre- molar teeth to study the sealing efficacy of Glass Ionomer, Silver amalgam, Composite resin and cavity varnish in Class V cavities. The filled specimens were thermocycled (4 degrees C +/- 2 degrees C and 60 degrees C +/- 2 degrees C) and subjected to Radio Isotope penetration tests. S35 was used as a tracer and autoradiography for detecting the microleakage. The extent of penetration of S35 in case of each material was assessed. No material was found to completely seal the cavity, however, Glass Ionomer could minimise the microleakage. Amalgam restorations exhibited gross microleakage which reduced to a great extent after application of cavity varnish. Composite resin was found to be superior to Silver amalgam in controlling microleakage.Item In vitro evaluation of NaF and APF-gel application on surface microhardness of enamel in children of low, optimum and high fluoride areas.(1992-03-01) Reddy, V V; Indushekar, K RAn in vitro study was conducted on 78 sound human pre-molars collected from low (0.24 ppmF), optimum (0.7 ppmF) and known endemic fluoride areas (> 1.5 ppmF), to study the effects of topical application of sodium fluoride and APF-gel on surface microhardness of enamel of these three areas using Vickers microhardness measurements before and after application of topical fluorides at time intervals of 1/2 an hour, 6 hours and 24 hours. It was found that both the topical fluorides increased the surface microhardness of enamel in the three areas; the maximum increase in surface microhardness was observed in fluorosed teeth. APF-gel was found to be more effective than sodium fluoride.Item Intradiploeic hydatid cyst of the occipital bone in a child--(a case report).(1979-07-01) Reddy, D R; Murlidhar, B; Rajyalakshmi, K; Reddy, V V; Rammohan, S; Verma, J RItem Massive osteolysis of skull bones.(1979-04-01) Reddy, D R; Sathyanarayana, K; Reddy, V V; Rao, D M; Rajyalakshmi, KItem Molariform supernumerary tooth--a case report.(2000-03-28) Shashikiran, N D; Reddy, V V; Mandroli, PThe occurrence of a single supernumerary tooth in the upper canine region a rare condition is reported. The crown resembles a molar tooth, thus suggesting a molariform supernumerary tooth.Item Prevalence location and patency of accessory canals in primary molars using dye penetration under vacuum suction technique--an in vitro study.(1993-03-01) Reddy, V V; Babu, SA study conducted on 120 primary molars (30 each of maxillary and mandibular 1st and 2nd molars) to find out the prevalence, location and patency of accessory canals and furcation formina using safranin red dye revealed the presence of accessory canals in 46 teeth (38.33 percent) with the major site being the furcation and furcation region.Item Proton magnetic resonance spectroscopy of brain in obstructive sleep apnoea in north Indian Asian subjects.(2010-09) Sharma, Surendra K; Sinha, S; Danishad, K A; Sharma, U; Sharma, H; Mishra, H K; Mishra, H; Kadhiravan, T; Reddy, V V; Sreenivas, V; Jagannathan, N RBackground & objectives: Repeated apnoeic/hypoapnoeic episodes during sleep may produce cerebral damage in patients with obstructive sleep apnoea (OSA). The aim of this study was to determine the absolute concentration of cerebral metabolites in apnoeic and non-apnoeic subjects from different regions of the brain to monitor the regional variation of cerebral metabolites. Methods: Absolute concentration of cerebral metabolites was determined by using early morning proton magnetic resonance spectroscopy (1H MRS) in 18 apnoeic patients with OSA (apnoeics) having apnoea/hypopnoea index (AHI) >5/h, while 32 were non-apnoeic subjects with AHI< 5/h. Results: The absolute concentration of tNAA [(N-acetylaspartate (NAA)+N-acetylaspartylglutamate (NAAG)] was observed to be statistically significantly lower (P<0.05) in apnoeics in the left temporal and left frontal gray regions compared to non-apnoeics. The Glx (glutamine, Gln + glutamate, Glu) resonance showed higher concentration (but not statistically significant) in the left temporal and left frontal regions of the brain in apnoeics compared to non-apnoeics. The absolute concentration of myo-inositol (mI) was significantly high (P<0.03) in apnoeics in the occipital region compared to non-apnoeics. Interpretation & conclusions: Reduction in the absolute concentration of tNAA in apnoeics is suggestive of neuronal damage, probably caused by repeated apnoeic episodes in these patients. NAA showed negative correlation with AHI in the left frontal region, while Cho and mI were positively correlated in the occipital region and Glx showed positive correlation in the left temporal region of the brain. Overall, our results demonstrate that the variation in metabolites concentrations is not uniform across various regions of the brain studied in patients with OSA. Further studies with a large cohort of patients to substantiate these observations are required.Item Talon cusp in primary lateral incisor: report of a case.(1989-03-01) Reddy, V V; Mehta, D S