A Novel Method to Distinguish Old Composite from Enamel: Spectrophotometric Validation
Journal Title: Journal of Advances in Medicine and Medical Research - Year 2017, Vol 19, Issue 4
Abstract
Aim: To identify a dye for disclosing composite resin restoration margins using tooth shade spectrophotometry. Materials and Methods: Study Design: Experimental Study. Forty sound, non-carious maxillary anterior teeth extracted for periodontal reasons were collected and standard box shaped class V cavities, 5 mm width, 2 mm height and 2 mm depth, were prepared and restored with composite resin. The samples were stored for 2 months in distilled water at 37°C and thermocycled for simulating ageing process (5°C-55°C/5000 cycles). Samples were then assigned into four groups according to the dyes used for staining: Coffee (5%), Carmoisine (0.1%), Erythrosine (1%) and Methylene blue (1%). A tooth shade spectrophotometer was used to assess the change in shade of enamel and composite resin before and after staining with four different dyes. The data was analyzed using one-way analysis of variance and Post Hoc LSD tests. Results: The results of spectrophotometric analysis of enamel and composite staining showed that Methylene blue caused maximum composite staining (p<0.05). Erythrosine also showed a significant change in shade of composite, greater than enamel due to hydrophobic interaction between the resin and dye (p<0.05). The two hydrophobic food stains Coffee and Carmoisine showed no significant change in colour of composite and could not distinguish the boundary between composite resin and tooth enamel (p>0.05). Conclusion: The exposure of specimens to colored solutions resulted in significant colour alteration. Composite resin is more stainable by hydrophobic dyes compared to tooth enamel.
Authors and Affiliations
Roshni Sharma, Subhra Sahoo, Mamta Kaushik, Pallavi Reddy, Neha Mehra, Uday Kumar
Keywords
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- EP ID EP311399
- DOI 10.9734/BJMMR/2017/30403
- Views 47
- Downloads 0
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