1. Progression of Enamel Demineralisation Around Fissure Sealants: Optical Coherence Tomography Study

    Progression of Enamel Demineralisation Around Fissure Sealants: Optical Coherence Tomography Study

    Purpose: To evaluate the progression of enamel demineralisation around fissure sealants using cross-polarisation optical coherence tomography (CP-OCT). Materials and methods: Three fissure sealants; Fuji Triage (FJ, GC), Beautisealant (BT, Shofu) and Helioseal resin sealant (HL, Ivoclar Vivadent) were placed in cavities (3 × 0.5 × 1 mm) prepared in bovine enamel blocks (n = 5). After 7-day artificial saliva incubation, specimens were subjected to demineralisation for 4 weeks (pH 4.5). CP-OCT scans (Santec) were acquired for each specimen after 1, 2 and 4 weeks of demineralisation and lesions were quantitatively measured to analyse lesion progression. Results: Repeated-measures ANOVA demonstrated that lesion ...

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