Faculty Publications
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Item “Dental Cements Based on Acid Degradable Glasses/Ion Leachable Glasses” – A Review(Taylor and Francis Ltd. michael.wagreich@univie.ac.at, 2016) Nagaraja Upadhya, P.; Ginjupalli, K.; Srinivasan, K.K.; Vasudeva Adhikari, A.V.; Satapathy, L.N.Glass ionomer cement (GIC) is one of the most versatile cements used in dentistry. It came into existence in the late 1960s mainly to overcome the drawbacks of its predecessor material ‘dental silicate cements’. Since then, it has undergone several improvisations and modifications to meet the requirements of various dental applications. The GIC consists of basic glass powder and acidic polyacids, which sets by an acid-base reaction between the components. The glass component of GIC plays a major role in the clinical performance of the material. It provides the source of ions for the cement formation, controls the strength, imparts translucency and provides a therapeutic benefit by releasing fluoride. Glass structure-reactivity-processing are the three main aspects to be considered when designing the glass compositions for cement formation. From the conventional calcium fluoroaluminosilicate glass to the current aluminium free glasses, GIC has received significant attention in the recent past to further extend its applications in various fields. The purpose of this article is to provide relevant discussion on the scientific development of the GIC from the glass science and technology point of view. © 2016 The Indian Ceramic Society.Item Cytocompatibility by MTT assay and platelet adhesion of Ti and Ti-6Al-4V coated with hydroxyapatite in different plasma gas atmospheres(Jaypee Brothers Medical Publishers (P) Ltd 4838/24 Ansari Road, Daryaganj New Delhi 110 002, 2017) Kotian, R.; Rao, P.P.; Madhyastha, P.; Shobha, K.L.; Satish Rao, B.S.S.; Ginjupalli, K.Aim: This study was performed to evaluate the biocompatibility of pure titanium and Ti-6Al-4V metals coated with hydroxyapatite (HA) by plasma spray using different plasma gas atmospheres. Materials and methods: The cell viabilities for each HA-coated sample in an atmosphere of argon, argon–hydrogen, nitrogen, and nitrogen–hydrogen were studied using MTT assay and platelet adhesion test. Results: The mean cell viabilities by MTT [3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide] assay of samples coated with HA in argon–hydrogen plasma atmosphere showed maximum cell viability at different time intervals compared with other coating atmospheres of argon–hydrogen, nitrogen, and nitrogen–hydrogen. A statistically significant value of cell viability (p < 0.001) was observed between and within the groups of argon, argon–hydrogen, nitrogen, and nitrogen–hydrogen plasma gas atmosphere. The platelet adhesion study showed agglomerates of platelet cells in some isolated regions of HA for all atmospheres. Significance: The results obtained in this study can serve as a guide for the development of new Ti-based HA-coated implants in different plasma gas atmospheres. © 2017, Jaypee Brothers Medical Publishers (P) Ltd. All rights reserved.