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Resin infiltration of developmentally hypomineralised enamel
Author(s) -
Crombie Felicity,
Manton David,
Palamara Joseph,
Reynolds Eric
Publication year - 2014
Publication title -
international journal of paediatric dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.183
H-Index - 62
eISSN - 1365-263X
pISSN - 0960-7439
DOI - 10.1111/ipd.12025
Subject(s) - medicine , enamel paint , penetration (warfare) , molar , lesion , sodium hypochlorite , dentistry , infiltration (hvac) , carious lesion , pathology , composite material , materials science , chemistry , organic chemistry , operations research , engineering
Background Molar incisor hypomineralisation ( MIH ) is a problematic condition with several characteristics for which infiltrant resins could theoretically improve clinical outcomes. Aim To investigate whether caries infiltrant resin can penetrate MIH ‐affected enamel. Design Molar incisor hypomineralisation lesions ( n = 21) were infiltrated using either the standard protocol or with the addition of a sodium hypochlorite (Na OC l) irrigation step. Lesions were sectioned and examined microscopically for infiltrant penetration before undergoing Vickers hardness testing. The surfaces of several lesions were also examined using scanning electron microscopy ( SEM ). Results Infiltrant resin could penetrate MIH lesions; however, the pattern was erratic. Two lesions were confined to inner enamel, and no infiltration occurred. On average, the resin penetrated to a depth of 0.67 ± 0.39 mm and 23.1 ± 15.2% of the area of the lesion. Microhardness increased in areas of resin penetration by 1.0 ± 0.7 GP a representing a proportional increase of 2.2 ± 2.5 times. There were no significant differences in results based on either the infiltration protocol or the type of MIH lesion. Conclusion Caries infiltrant resin is capable of penetrating MIH enamel lesions; however, the pattern, extent, and change in hardness produced are currently unpredictable.