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Gupta, Ashu K.
- Dentin Tubular Occlusion with Bioactive Glass Containing Dentrifice and Gluma Desensitizer-A Comparative SEM Evaluation
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Authors
Affiliations
1 Deptt of Conservative Dentistry & Endodontics, H.P. Govt. Dental College & Hospital, Shimla, IN
2 Department of Oral & Maxillofacial Surgery, Rama Dental College, Hospital and Research Centre, Kanpur, IN
1 Deptt of Conservative Dentistry & Endodontics, H.P. Govt. Dental College & Hospital, Shimla, IN
2 Department of Oral & Maxillofacial Surgery, Rama Dental College, Hospital and Research Centre, Kanpur, IN
Source
Dental Journal of Advance Studies, Vol 2, No 1 (2014), Pagination: 16-21Abstract
Dentinal hypersensitivity (DH) is a painful clinical condition and is characterized by pain arising from exposed dentin in response to various stimuli. Various treatment modalities are available to treat dentinal hypersensitivity which include at-home and in-office treatment. At home treatment generally consists of a variety of dentrifices containing different constituents like stannous fluoride, strontium chloride and potassium oxalate. These agents cause occlusion of dentinal tubules which decreases both dentine permeability and fluid movement thereby reducing hypersensitivity. Recently, bioactive glass (NovaMin) has been incorporated as a remineralising ingredient in dentifrice formulations for treating Dentinal Hyprsensitivity. It relieves the symptoms by precipitating hydroxycarbonate apatite (HCA) onto the tooth surface. Another combination product consisting of an aqueous solution of 5% glutaraldehyde and 35% hydroxyethyl methacrylate (Gluma desensitizer) has also been reported to be an effective desensitizing agent. Thus, the aim of the study was to evaluate and compare the tubule occluding effect of of two desensitizing agents, which are bioactive glass (Novamin), and Gluma Desensitizer. In the present study bioactive glass was found to produce more completely occluded tubules while Gluma desensitizer caused more partial occlusion on initial application. Hence, NovaMin application could be more effective in providing relief from dentinal hypersensitivity when compared with Gluma Desensitizer.Keywords
Dentin Hypersensitivity, Desensitizing Agents, Bioactive Glass.Full Text
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- Comparative Evaluation of Immediate Bond Strength to Bleached Enamel Following Application of Various Antioxidant Solutions
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PDF Views:100
Material and Methods: Seventy central incisors were divided into seven groups. Groups I and II served as unbleached and bleached controls respectively. Groups III, IV, V, VI and VII served as the experimental groups and were subjected to 37.5% hydrogen peroxide bleaching followed by 10 min application of 10% sodium ascorbate, 25% alpha-tocopherol, 6.5% grape seed extract, 5% lycopene and 5% green tea extract respectively. Following composite bonding, shear bond strength was determined and the results were analyzed using ANOVA followed by Post Hoc Multiple Comparisons test.
Results:The bond strength values for Group I (positive control) were maximum and significantly different than all the other groups except Grape seed extract group (Group V). When compared to Group II (bleached control), all the groups showed significantly higher bond strength. Significant difference in the bond strength values were seen between Group III (10% sodium ascorbate) and Group V. Also values for Group V were significantly different from Group VI (5% lycopene). All the other values showed insignificantly different results.
Conclusion: All the antioxidant solutions improved the shear bond strength values after bleaching but only Grape seed extract application reversed the values to the non bleached levels. Lycopene was least effective. Other antioxidants showed comparable results.
Authors
Affiliations
1 Department of Conservative Dentistry & Endodontics, H.P. Govt. Dental College & Hospital, Himachal Pradesh, IN
1 Department of Conservative Dentistry & Endodontics, H.P. Govt. Dental College & Hospital, Himachal Pradesh, IN
Source
Dental Journal of Advance Studies, Vol 5, No 2 (2017), Pagination: 84-89Abstract
Aim: The aim of this study was to compare the reversal of shear bond strength of composite to bleached enamel immediately after bleaching followed by application of various antioxidant solutions.Material and Methods: Seventy central incisors were divided into seven groups. Groups I and II served as unbleached and bleached controls respectively. Groups III, IV, V, VI and VII served as the experimental groups and were subjected to 37.5% hydrogen peroxide bleaching followed by 10 min application of 10% sodium ascorbate, 25% alpha-tocopherol, 6.5% grape seed extract, 5% lycopene and 5% green tea extract respectively. Following composite bonding, shear bond strength was determined and the results were analyzed using ANOVA followed by Post Hoc Multiple Comparisons test.
Results:The bond strength values for Group I (positive control) were maximum and significantly different than all the other groups except Grape seed extract group (Group V). When compared to Group II (bleached control), all the groups showed significantly higher bond strength. Significant difference in the bond strength values were seen between Group III (10% sodium ascorbate) and Group V. Also values for Group V were significantly different from Group VI (5% lycopene). All the other values showed insignificantly different results.
Conclusion: All the antioxidant solutions improved the shear bond strength values after bleaching but only Grape seed extract application reversed the values to the non bleached levels. Lycopene was least effective. Other antioxidants showed comparable results.
Keywords
Bleaching, Antioxidant, Sodium Ascorbate, Alpha-Tocopherol, Grape Seed Extract, Lycopene, Green Tea Extract.Full Text
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