A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Tamilselvi, Ramachandran
- Effect of CPP ACP and Nano Hydroxyapatite Incorporated GIC on Remineralization of Dentin
Authors
1 Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, IN
2 Department of Conservative Dentistry & Endodontics, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, IN
3 Department of Anatomy, Sree Balaji Dental College & Hospital, Bharath Institute of Higher Education & Research, IN
4 Apollo Hospitals and Apollo White Dental & Sree Venkateshwara Dental College & Hosapital, Chennai, Tamil Nadu, IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 936-941Abstract
The objective of this invitro study was to investigate, whether the remineralization potential of conventional GIC in human dentin could be improved by combining with CPP - ACP and nano hydroxyapatite. Class I cavities were prepared in sound human extracted third molars and they were randomly assigned to 3 groups according to the restorative materials. Group I: Conventional GIC, Group II:Conventional GIC and CPP-ACPand Group III: Conventional GIC powder & Nano hydroxy apatite. The samples were subjected to remineralizationand demineralization cycles for period of 2 weeks. Energy dispersive X-ray analysis was used to evaluate the remineralization. The elemental compositions were analyzed using One way ANOVA, Post Hoc and Mann Whitney tests. The calcium and phosphate concentration were statistically significantly greater in Group III than Group I and II (P<0.05).Nanohydroxy apatite with GIC remineralized the demineralized dentin almost equal to normal dentin.
Clinical Relevance: GIC with nanohydroxy apatite might be superior restorative/base with an improved remineralization potential of dentin.
Keywords
GIC, DENTIN, HYDROXYAPATITE.
- An Invitro Comparison of Dissolution of Human Pulp in Sodium Hypochlorite, Ethanolic Extract and Digestive Secretion of Insectivorous Plants
Authors
1 Department of Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research, Narayanapuram, Pallikaranai, Chennai, Tamil Nadu, IN
2 Department of Conservative Dentistry & Endodontics, Sri Ramachandra University, Chennai, IN
3 Department of Conservative Dentistry & Endodontics, Best Dental College, Madurai, IN
4 Department of Conservative Dentistry & Endodontics, Madha Dental College, Chennai, IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 942-946Abstract
The tissue dissolution property of irrigating solutions is important for successful endodontic treatment. Sodium hypochlorite (NaOCl) is a well-known tissue dissolvent, but no data have been published on herbal alternative to NaOCl. The purpose of this study was to investigate the pulp tissue dissolution capacity of sodium hypochlorite, ethanolic extract of Drosera rotundifolia and digestive fluid of Nepenthes khasiana. Freshly extracted intact vital teeth, extracted for orthodontic and impaction reasons were collected and stored at – 20 ˚C. The pulp tissues were removed by splitting of the teeth when required.
Method: The pulp tissues were randomly divided into 4 groups (n = 10), individual sample was weighed 7 mg each. The groups were as follows, Group I: 5% NaOCl, Group II: digestive fluid of Nepenthes khasiana, Group III: Drosera rotundifolia (ethanolic extract), Group IV: distilled water. The test solutions were added to tubes containing tissue samples, the tissues were removed from the test solutions at 5, 15, 20, 30 min, 1,2,3,4,5,6,7 hr blotted dry with the tissue paper and weighed using precision balance.
Results: The results showed complete dissolution of pulp tissue in Group I at 20 minutes, Group II at 7 hr, Group III and IV showed no dissolution of pulp at the investigated time intervals.
Conclusion: The digestive fluid of Nepenthes khasiana could be considered as an herbal alternative to NaOCl for pulp tissue dissolution as it completely dissolved the pulp tissue similar to 5% NaOCl, but at different time intervals.
Keywords
Sodium Hypochlorite, Tissue Dissolution, Insectivorous Plants, Nepenthes, Digestive.- Evaluation of Cyclic Fatigue Resistance of Three Different Niti Rotary Systems-An Invitro Study
Authors
1 Post graduate Student, Sree Balaji Dental College and Hospital, Bharath University, Chennai, IN
2 Professor, Sree Balaji Dental College and Hospital, Bharath University, Chennai, IN
3 Assistant Professor, Sree Balaji Dental College and Hospital, Bharath University, Chennai, IN
4 Reader, Department of Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, IN
5 HOD & Professor, Department of Conservative Dentistry and Endodontics, Sree Balaji Dental College and Hospital, Bharath University, Chennai, IN
Source
Indian Journal of Public Health Research & Development, Vol 11, No 1 (2020), Pagination: 688-694Abstract
Aim: The aim of this study is to compare and evaluate the cyclic fatigue resistance of 3 different Nickel Titanium rotary file systems: Hyflex CM, Neoendo Flex files and ProTaper Gold by static method in three different curvatures, namely, 45°, 60° and 90°.
Materials and Method: Thirty Hyflex CM (25/.06), Thirty Neoendo Flex (25/.06) and Thirty Protaper Gold (25/.08) instruments were included in this study. The static cyclic fatigue test was performed using a custom-made jig. The artificial canal is made of stainless steel jig with an inner diameter of 1.5mm, a 45°, 60°, 90° angles of curvature and radii of curvature of 5 mm. All the instruments were rotated according to manufacturer’s recommendations until failure occurred. The time taken to failure was recorded in seconds for each group using a digital chronometer. The data were analyzed statistically using one way ANOVA, Post hoc test of Bonferroni was performed to identify pair-wise significance via SPSS 21.0 software (SPSS Inc, Chicago, IL). The statistical significance was set at 5%.
Result: In 45° and 60° Hyflex CM and Neoendo Flex are better than Pro Taper Gold. At 90°, Neoendo Flex is better than Hyflex CM (P<.05).
Conclusion: Within the limitation of this study, it can be concluded that, Neoendo Flex files exhibited highest cyclic fatigue resistance at 90° angle of curvature. In 45° and 60° angle of curvature Neoendo Flex files and Hyflex CM rotary instrument were more resistant to cyclic fatigue. Protaper Gold showed the least cyclic fatigue resistance than the other files tested.