Abstract
IntroductionMicroleakage is an important consideration in primary dentition because the floor of the cavity preparation may be close to the pulp. The added insult to the pulp caused by seepage of irritants around the restoration and through the thin dentin may produce irreversible pulp damage.AimThe objective of this study was to evaluate and compare the sealing ability of three light cured (LC) resin-modified glass-ionomer cements (RMGICs) in primary anterior teeth.Materials and methodsClass V cavity was prepared on the labial surface of extracted primary anterior teeth which were then grouped and restored with Ketac N100, Fuji II LC, or Vitremer. Dye penetration test with methylene blue stain was used to record the microleakage. Depth of dye penetration was recorded in millimeters at the incisal and gingival margin using computer software.ResultsThe depth of dye penetration at the incisal margin in the three groups was comparable, but at the gingival margin, Vitremer showed the least dye penetration, followed by Fuji II LC, and Ketac N100. The depth of dye penetration at the gingival margin was higher than the incisal margins in all the three groups.ConclusionAmong the three RMGICs, Vitremer can be considered as the material of choice for restoring class V cavities in primary anterior teeth. Periodic recall and recare is necessary when any of the three materials are used in clinical practice.How to cite this articleSiddiqui F, Karkare S. Sealing Ability of Nano-ionomer in Primary Teeth: An ex vivo Study. Int J Clin Pediatr Dent 2016;9(3):209-213.
Highlights
Microleakage is an important consideration in primary dentition because the floor of the cavity preparation may be close to the pulp
Among the three resinmodified glass-ionomer cements (RMGICs), Vitremer can be considered as the material of choice for restoring class V cavities in primary anterior teeth
In a review of mechanism of bonding of restorative material to enamel and dentin, it was concluded that while cavity preparation in enamel margins resulted in consistently stronger bonds, unique challenges are encountered with dentin surface bonding, because enamel is 92% inorganic hydroxyapatite and dentin, that is, 45% inorganic by volume.[5]
Summary
Microleakage is an important consideration in primary dentition because the floor of the cavity preparation may be close to the pulp. Microleakage is defined as the passage of bacteria, fluids, molecules, or ions along the tooth–restoration interface.[1] This leakage may be clinically undetectable, but is a major factor influencing the longevity of dental restorations as it causes many severe biological effects on the restored tooth, including the secondary caries, pulp pathology, post-restoration hypersensitivity, and marginal breakdown.[2] Microleakage in primary dentition is an important consideration because the seepage of irritants around the restoration and through the thin dentin may produce irreversible pulp damage.[3]. Ketac N100 restorative GIC is a nanotechnology-based paste/paste product, which compared to other resinmodified glass-ionomer cements (RMGICs) is cited by the manufacturer to be highly publishable, and easy to handle Such a material would offer great advantages in primary anterior teeth possibly replacing the composite resin for anterior restorations with added advantage of fluoride release. The aim of this study was to evaluate and compare the sealing ability by measuring the marginal microleakage in three visible light-cured (LC) resin-modified glass ionomer restorative materials in primary anterior teeth
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