Marginal leakage of glass-ionomer cement restorations

Use of fluorescent compounds in assessing bonded resin-based restorations: A literature review

“…19,25 New imaging concepts, together with the availability of lasers and the use of computers have completely transformed optical microscopy. 24,26 Scanning confocal microscopy offers improved rejection of out-of-focus noise and provides greater resolution than conventional imaging, yielding greatly 20 Rhodamine B 1% saline solution, 3 h Confocal scanning microscope Sidhu et al 61 Rhodamine B 0.25% in distilled water, 3 h Two-photon laser technique Yoshikawa et al 63 Rhodamine B 1% saline solution, 3 h Confocal scanning microscope 64 Fluorescein 20% aqueous solution, 1 h, n/a n/a Kim et al 65 Rhodamine B 1% aqueous solution, n/a, n/a Conventional light microscope Harashima et al 66 Rhodamine 6 Rhodamine B isothiocyanate 1% in 50% alcoholic solution 20 8C/1 h Confocal scanning microscope Hossain et al 70 Rhodamine B n/a Conventional light microscope Kohara et al 55 Rhodamine B 0.6% during thermocycling n/a Palma-Dibb et al 4 Rhodamine B 0.2% aqueous solution, 24 h, n/a Optical microscope Pioch et al 54 Rhodamine B isothiocyanate 1% in 50% alcoholic solution, 24 h, 20 8C Confocal scanning microscope Corona et al 71 Rhodamine B 0.2%, aqueous solution, for 24 h, n/a Optical microscope de Almeida et al 52 Rhodamine 25 The intricate and often complicated methodology of specimen drying required for conventional SEM or TEM analysis, is not necessary for confocal microscopy. This advantage leads to a decreased risk of shrinkage or desiccation artifacts and allows the same specimens to be subsequently studied using other, additional microscopic techniques.…”

Experimental Initial Partial Polymerization Method for Fuji II Placement Evaluated for Microleakage With/Without Fuji Coat

“…This potential factor has been noted in previous in vitro studies. 18,28,29 Use of a finishing varnish such as Fuji Coat can prevent early hydration or dehydration and is especially important during the first hour following placement of RMGI restorations. 23,24 Water plays a key role in the acid-base reaction by acting as the medium for the reaction and is incorporated into the cement structure.…”

Performance of Brazilian and imported glass ionomer cements used in Atraumatic Restorative Treatment (ART) regarding microleakage in primary molars

“…From the total sample, 68% presented a maximum score, 22% presented some microleakage and only 10% of samples were leakage-free. The vast majority of papers in related literature also reveal high cervical leakage indices related to conventional GIC in both permanent 1 , 24 , 30 and deciduous 8 , 28 teeth. A few authors, however, have reported considerable marginal sealing with conventional GIC in permanent 4 and deciduous 27 teeth.…”

“…Alperstein, et al 1 (1983) and Yap, et al 30 (2000) have demonstrated considerable microleakage in GIC restorations even when samples were not submitted to thermocycling, which is known to increase microleakage values. This fact raises the question of what factors other than adhesive capacity and dimensional stability account for adequate initial marginal sealing.…”