Resin Infiltration of Natural Caries Lesions

Abstract

Infiltration of non-cavitated caries lesions with light-curing resins could lead to an arrest of lesion progression. The aim of this study was to evaluate the penetration of a conventional adhesive into natural enamel caries after pre-treatment with two different etching gels in vitro. Extracted human molars and premolars showing proximal white-spot lesions were cut across the lesions perpendicular to the surface. Corresponding lesion halves were etched for 120 sec with either 37% phosphoric acid gel (H(3)PO(4)) or 15% hydrochloric acid gel (HCl), and subsequently infiltrated with an adhesive. Specimens were observed by confocal microscopy. Mean penetration depths (SD) in the HCl group [58 (37) microm] were significantly increased compared with those of the H(3)PO(4) group [18 (11) microm] (p < 0.001; Wilcoxon). It can be concluded that etching with 15% hydrochloric acid gel is more suitable than 37% phosphoric acid gel as a pre-treatment for caries lesions intended to be infiltrated.

Resin Infiltration of Artificial Enamel Caries Lesions with Experimental Light Curing Resins

“…Although a complete infiltration of shallow lesions could be accomplished using these products, penetration of natural, deeper lesions could be achieved at most superficially 10) . Since adhesives and fissure sealants have been developed mainly with regard to adhesion 11,12) , it is not surprising that these materials show inferior penetration capabilities.…”

“…To create artificial enamel lesions in the uncovered areas, specimens were exposed to five liters of a demineralizing solution containing 50 mM acetic acid, 3 mM CaCl2 2H2 O, 3 mM KH2 PO4 , 6 M methylhydroxydiphosphonate 18) for 50 days (pH 5.0; 37 ). The pH was checked daily, and if necessary, adjusted with a small amount of either hydrochloric acid (10 ) or potassium hydroxide solution (10 M) (all chemicals from Sigma-Aldrich, Steinheim, Germany).…”

Effect of thermal cyclic stress on acid resistance of resin-infiltrated incipient enamel lesions <i>in vitro </i>

“…This product is designed to infiltrate resinous material within WSLs for inhibiting further lesion demineralization or for arresting the lesion 3,4) . Thus far, several in vitro studies have been carried out to compare the effects of acid-etching conditions 5,6) and the resin penetration rate (or viscosity) on the degree of resin penetration into the lesion body 7,8) .…”

Beyaz nokta lezyonlarının giderilmesinde yeni bir yöntem, rezin infiltrasyon tekniği: olgu bildirimi

“…Mine yüzeyi %15 hidroklorik asit jelin (Icon Etch, DMG, Hamburg, Almanya) 2 dk uygulanmasıyla uzaklaştırıldı (Resim 3). 11 Yandaki dişler şeffaf matriks bant kullanılarak korundu. Ortaya çıkan kabarcıklardan dolayı oluşabilecek homojen olmayan pürüzlendirmeyi engellemek için, asit jel uygulama sıra-sında zaman zaman mikro fırça yardımıyla karıştırıldı.…”

“…Hidroklorik asit uygulamasıyla hem yüze-yel renklenmeler giderildi hem de rezinin penetre olmasını engelleyecek hipermineralize tabaka ortadan kaldırıldı (Resim 4). 9,11 Çürük lezyonu gövdesindeki mik- …”