New Single-bottle Ceramic Primer: 6-month Case Report and Laboratory Performance

Abstract

Introduction:This article presents a 6-month case report and an in vitro evaluation of the performance of the new self-etching glass-ceramic monobond etch and prime (MEP) when applied in a lithium disilicate (LD). The MEP contains in the same bottle, along with acid conditioner and silanes. This simplifies the bonding procedures by reducing not only the number of steps, but also the working time. A 42-year-old female patient sought for esthetic treatment, and the main complaint was the darkened appearance of the upper lateral incisor. The esthetic treatment includes dental bleaching and gingivectomy, all-ceramic zirconia crowns, and all-ceramic crown and laminate veneer LD. After 6 months of esthetic treatment, marginal staining, gap, or chip fracturing damaging margins after sharp explorer in the margins was not observed. Furthermore, the inferior etching pattern of MEP was compared with traditional hydrofluoric acid (HF) conditioning. The microshear bond strength to the intaglio surface of LD was statistically similar when HF was compared with MEP. This new self-etching glass-ceramic showed good in vitro and 6 months clinical results in this case report. Future long-term clinical studies with more clinical case need to be done to confirm the performance of the use of this new conditioner.Clinical significance: The use of a new self-etching glassceramic showed a good in vitro and 6 months clinical results. This new product can be an easy, simple, and alternative approach for esthetics bonding procedure.

Influence of Shear Bonding Strength of Lithium Disilicate to Enamel under Different Surface Treatments

“…The 5% HF acid etch had been used in the two-step conditioning system, which creates low surface roughness. Siqueira et al 21 have also reported that partial dissolution of the glassy phase will be created, when ceramic surfaces were etched by using one step conditioning system. Poor resin cements flow into the micropores could be explained by surface roughness and mechanical interlocking.…”

“…The wettability of the ceramic surface for the application of resin composites and silane-coupling agents is affected by this increase in surface roughness. 20,21 The importance of adequately porous surface is observed for the durable cementation of both Fd and Ld ceramic indirect restorations. 24 Clean surfaces, the use of low-viscosity adhesives, cements, and suitable wetting are the other factors that contribute to the effectiveness of bonding between the materials.…”

Effect of Self-Etching Primer Associated to Hydrofluoric acid or Silane on Bonding to Lithium Disilicate

“…Although this shallow etching pattern did not jeopardize immediate bond strength (10,11), it may reduce the longevity of the bond strength of the ceramic interface with the silane agent. Thus, a preliminary etching with hydrofluoric acid before the use of the self-etching ceramic primer could be an alternative to improve the etching pattern and prolong the lifetime of the lithium disilicate bonds.…”

“…According to the manufacturer, these novel material reduces the toxic potential of the HF, the chair-time required and the technique sensitivity of etching ceramic when compared to the conventional methods (9). It was shown that the selfetching ceramic primer promotes less-pronounced etching pattern than that produced by the two-step procedure involving hydrofluoric acid and silane (10,11).…”

“…Most of the comparisons between the self-etching ceramic primer and the two-step hydrofluoric acid + silane procedure show similar immediate bond strength values (10,11), and the few comparisons about the long-term bond strength values show inconsistent results (12,13).…”