Influence of resin-coating on bond strength of resin cements to dentin and CAD/CAM resin block in single-visit and multiple-visit treatment

Abstract

The purpose of this study was to evaluate the influence of resin-coating using one-bottle adhesives on the bond strength of resin cements in single-visit and multiple-visit treatments. Three one-bottle adhesives were used for resin-coating and/or pre-treatment adhesives prior to cementation, in conjunction with resin cements from the same manufacturers: Clearfil Universal Bond Quick with Panavia V5 (UBQ/Pv5), Scotchbond Universal Adhesive with RelyX Ultimate (SBU/RxU), and Optibond All-in-one with NX3 Nexus (OP/NX3). Bovine dentin surfaces were left uncoated or resin-coated. After 1-h water storage (single-visit) or 1-week water storage with a non-eugenol temporary cement (multiple-visit), a CAD/CAM resin block was cemented to uncoated or resin-coated dentin surfaces. Microtensile bond strengths (µTBSs) were measured and statistically analyzed (α=0.05). Application of resin-coating improved µTBSs. The multiple-visit group exhibited lower values of µTBS than the single-visit group. Selection of the materials affected µTBSs. Resin-coating and single-visit treatment are desirable for CAD/CAM resin composite restorations.

Effectiveness of Self-Adhesive Resin Luting Cement in CAD-CAM Blocks—A Systematic Review and Meta-Analysis

“…Qualitative analysis of the risk of bias assessment was performed by individually scoring the ten selected parameters using the following criteria: (0) clearly mentioned, (1) present but not accurately mentioned, and (2) not mentioned. Global scoring was categorized as low (0-4), medium (5)(6)(7)(8)(9)(10)(11)(12), high (13)(14)(15)(16)(17), or very high (18-20) risk of bias.…”

“…Seventy-seven articles were removed by reading the titles and abstracts, and 42 were removed after complete reading. The remaining 29 articles [1][2][3][4][5][6][7][8][9][10]14,22,[25][26][27][28]31,[33][34][35][36][37][38][39][40][41][42][43][44] were selected for the quality analysis. Manual research also retrieved three studies [30,45,46], three randomized clinical trials [24,47,48], six reviews [15,23,29,[49][50][51], and three meta-analyses [11,12,20], which were used to broaden the introduction and discussion sessions.…”

“…For quantitative analysis, 12 studies were sub-grouped to evaluate mechanical performance [1,2,[6][7][8][9][10]25,27,35,37,42] and four [3][4][5]26] to evaluate marginal parameters. Five articles initially thought to be included were rejected for the meta-analysis because they provided no quantitative results, making inclusion impossible for mechanical [14,38,40] or marginal assessment [22,28].…”

“…Since SARC reacts superficially with mineralized tissues, this self-adhesive resin cement does not form a strong dentin hybrid layer or resin tags [25]. Resin coating with a hydrophobic resin may be suggested, as it creates a layer with a low modulus of elasticity that acts as a stress breaker or shock absorber, resulting in higher bond strengths with the resin-coated groups, strengthening the dentin interface, thus leading to better adhesive performance, regardless of the resin cement and its curing mode [7,25,50].…”

“…CAD-CAM technology in dental medicine is developing, allowing protocol standardization and a predictable quality of dental restorations while reducing the production price [1,2], aiming to deliver materials at their highest quality [3], and enhancing the outgrowth of highly esthetic and functional restorative materials [4][5][6]. This technology has boosted impression and casting procedures [6][7][8][9], supplying easier and quicker indirect restorations, frequently without the requirement for provisional restorations or dental laboratories, allowing single-visit [4,8,9] inlays, onlays, veneers, or even full-contour crowns fabricated with several alternative materials with high survival rates [10][11][12]. Candidate materials may incorporate lithium disilicate glass-ceramic, leucite-reinforced glass-ceramic, feldspathic ceramic, zirconia, resin-matrix composites, polymer-infiltrated ceramic, or titanium [1,13].…”