Effect of resin infiltration application on early proximal caries lesions in vitro

Abstract

Background/purpose Resin infiltration (RI) material ICON is used in treating early proximal caries lesions, as it depends on a micro–invasive infiltration technology. This in vitro study aimed to evaluate the effect of ICON resin infiltration (RI) on early proximal caries by comparing surface roughness and hardness before and after treatment with RI using atomic force microscopy (AFM), automated microhardness testing system (AMHTS), and scanning electron microscopy (SEM) in vitro. Materials and methods Twenty seven premolars extracted for orthodontic reasons were sectioned buccolingually, creating 54 specimens. Each specimen was immersed in demineralizing solution to induce caries. Only teeth with “International Caries Detection and Assessment System” codes 1 and 2 were selected. The specimens were divided randomly into either AFM, AMHTS or SEM groups, which examined demineralized enamel before and after treatment with ICON. Results The mean average surface roughness and root mean square roughness values of demineralized enamel treated with ICON were significantly higher than untreated lesions (P < 0.001). The mean Vickers hardness values for demineralized enamel treated with ICON was significantly higher than untreated lesions (P < 0.001). SEM showed irregular, pitted and rough demineralized enamel surface with destruction of enamel rods and dissolution of enamel crystals. After ICON application, the surface showed complete blockage of enamel rods with RI and irregular, rough uneven topography. Conclusion RI application on proximal incipient caries increased surface roughness and hardness significantly.

Effect of Resin Infiltration on Enamel: A Systematic Review and Meta-Analysis

“…Overall, twelve studies included bovine teeth (n per group = 803) while twenty-five studies included human teeth (n per group = 865). Nine studies reported data without specimen demineralization previously to resin infiltration [47,54,55,57,59,[61][62][63][64]74] and thirty-nine articles included the demineralization process before the infiltrative resin [21,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][48][49][50][51][52][53]56,58,60,[65][66][67][69][70][71][72][73]. The demineralization process consists of emerging the teeth in a demineralization solution, with pH between 4 and 5 for a period of time that ranges from 1 min to 1200 h, to simulate the formation of WSLs (Table…”

Resin Infiltration Technique as Minimal Invasive Approach Towards Mild to Moderate Dental Fluorosis in an Adolescent: a Case Report

“…Some concerns have been raised regarding the long term colour stability and susceptibility to staining of this technique based on in-vitro studies which need to be considered and included in treatment planning. Ulrich and colleagues found that surface roughness of tooth treated with resin infiltration technique was higher than that of sound enamel in addition to demineralized enamel and this is supported by recent studies (Ulrich et al, 2015;El-Meligy et al, 2021). The micro-roughness of resin infiltrated surface can act as a medium for extrinsic staining agents and plaque to accumulate which over time will result in significant alterations in colour.…”

Effectiveness of Organic Versus Inorganic Analogues for Treating White Spot Lesions: An in Vitro Study

“…Demineralized teeth were further classified into three subgroups, according to the type of repair material used (either being remineralized or resininfiltrated) in a single application method (9) . All teeth were stored in distilled water at 37°C until tested after 1 week.…”