Resin Infiltration of Fissure Caries with Various Techniques of Pretreatment in vitro

Abstract

The resin infiltration technique might be used for occlusal caries lesions in order to arrest their progression. This in vitro study evaluated the influence of various modifications of the infiltration technique on the penetration abilities of the infiltrant into occlusal lesions. Extracted human molars and premolars (n = 140) with non-cavitated white spot lesions were randomly allocated to 7 groups. As control, specimens were etched with 15% hydrochloric acid (HCl) gel for 120 s and resin infiltrated for 180 s (Icon; DMG). As modification HCl gel reduced in surface tension and viscosity with and without abrasives was applied using 3 different types of brushes either to oscillate or rub the HCl gel onto the enamel surface. The median maximum lesion depth was 1,232 µm (interquartile range 882-1,513). Compared with the control procedure [23% (16/50)] a higher percentage penetration was observed if the HCl gel was mixed with a small amount of abrasives were rubbed into the fissures using a modified brush with stiff bristles that were adjusted to the fissure relief for either 120 s [100% (64/100)] or 30 s [98% (61/100); p < 0.05; Mann-Whitney test]. All other experimental treatments resulted in penetration results in-between. It can be concluded that the use of an abrasive HCl gel in conjunction with a modified brush mostly enhances resin infiltration into fissure caries lesions. © 2014 S. Karger AG, Basel

Evaluation of Surface Roughness Characteristics Using Atomic Force Microscopy and Inspection of Microhardness Following Resin Infiltration with Icon®

“…Although there are many studies in the literature which investigate the properties of the infiltrant, there is only one study which aims to evaluate the material at a nano‐scale using AFM . In addition, the previous studies which investigate the microhardness of Icon ® show differing results .…”

Resin infiltration of deproteinised natural occlusal subsurface lesions improves initial quality of fissure sealing

“…49 Where applicable, HCl may be combined with abrasives. 19 However, it seems worth emphasising that a complete removal of the surface layer is not considered the primary objective of the infiltration concept; instead, increasing the penetrability by opening the porous system of incipient lesions is essential. The surface layers of active carious lesions exhibit a thickness of approximately 50 μm.…”

“…A low-viscous resin infiltrant (RI) has been developed and penetrates and occludes the porous volume of subsurface lesions, 15, 16 thus significantly increasing the microhardness of demineralised enamel (and restoring hardness of sound enamel). 17, 18 Some preliminary investigations focussing on aspects of occlusal infiltration have presented promising outcomes both in vitro 19, 20 and clinically. 21 However, organic material (for example, proteins, 22, 23 lipids, 22, 24 and bacterial compounds 25 ) often block the pores of natural subsurface lesions.…”

Effect of Conditioning Protocols and Ultrasonic Application of an Infiltrant Resin in White Spot Lesions

“…The association of both acid agents showed higher penetration depth values compared to single application of HA. PA is extensively known as the gold standard acid agent used to etch the enamel surface prior to adhesive procedures (24,25). One may be speculated that the hypomineralised base could be eliminated, and PA acts as a booster agent of HA over the demineralization process.…”