Influence of polymerization time on properties of dual-curing cements in combination with high translucency monolithic zirconia

Alovisi, Mario; Scotti, Nicola; Comba, Allegra; Manzon, E.; Farina, Elena; Pasqualini, Damiano; Tempesta, Riccardo Michelotto; Breschi, Lorenzo; Cadenaro, Milena

doi:10.1016/j.jpor.2018.06.003

Cited by 31 publications

(43 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A controlled temperature at 37°C during the experiment is nevertheless important, because temperature was documented to affect DC of composite cements significantly, in particular when composite cements are solely allowed to self-cure [10]. According to the authors' knowledge, most papers measured initial DC at room temperature [11][12][13]. In this study, we maintained the environmental temperature at 37°C as in the clinical situation.…”

Section: Discussionmentioning

confidence: 99%

Initial curing characteristics of composite cements under ceramic restorations

et al. 2021

View full text Add to dashboard Cite

Purpose: To assess the degree of conversion (DC) of dual-curing composite cements when cured through ceramic-veneered zirconia disks. Methods: Portions of mixed cement, either G-CEM LinkForce (GC), Panavia V5 (Kuraray Noritake) or ResiCEM (Shofu), were placed on the ATR crystal of a Fourier Transform Infrared Spectroscope (FTIR; iS50, Thermo Scientific) and squeezed to a 100-µm film thickness using a microscopy cover glass. DC (%) of the composite cements applied in self-curing mode was measured in the dark at 37°C. Following the dual-curing mode, the cements were light-cured directly (positive control) or through a ceramic-veneered zirconia disk (0.5-mm thick zirconia with a 1.0-mm thick veneering ceramic) for 40 sec using two light-curing units (G-Light Prima 2, GC; PenCure, Morita). Per experimental group, 5 tests were conducted to measure DC in self-cure and dual-cure mode (n=5). FTIR spectra of the composite cement films were acquired to determine DC every min up to 30 min. DC of the composite cements was statistically compared using two-way repeated-measures ANOVA (α=0.05). Results: For all cements investigated, the self-curing mode resulted in significantly lower DC at 10, 20 and 30 min than the light-curing mode. When the composite cements were light-cured through the zirconia disk, DC at 30 min dropped significantly for ResiCem (Shofu), while not for Panavia V5 (Kuraray Noritake) and G-CEM LinkForce (GC). Conclusions: Self-curing slows down polymerization but does not reach for all composite cements the highest (light-cured) DC. Ceramic-veneered zirconia-based restorations may affect DC of some composite cements.

show abstract

Section: Discussionmentioning

confidence: 99%

Initial curing characteristics of composite cements under ceramic restorations

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Light curing is important for SADRC [12]. It affects the polymerization efficiency of dual-cured resin cement through high translucent zirconia [13]. In addition, curing time [14], type of light curing unit [15], type of initiator [16], the type [17], and thickness [18] of the restoration can influence the polymerization of dual-cured resin cement.…”

Section: Introductionmentioning

confidence: 99%

In Vitro Cytotoxicity of Self-Adhesive Dual-Cured Resin Cement Polymerized Beneath Three Different Cusp Inclinations of Zirconia

Zhang

Cheng

Tong

et al. 2019

BioMed Research International

View full text Add to dashboard Cite

The aim of the present study was to evaluate the in vitro cytotoxicity of self-adhesive dual-cured resin cement (SADRC) polymerized beneath three different cusp inclinations of zirconia with different light curing time. A commercial SADRC (Multilink Speed) was polymerized beneath zirconia (ZrO2) with three different cusp inclinations (0°, 20°, and 30°) for 20 s or 40 s. After being stored in light-proof box for 24 h, the ZrO2-SADRC specimens were immersed in DMEM for 72 h and then we got the extract solution, cultured the human gingival fibroblasts (HGF, 8 × 103 per well) with 100% or 50% concentrations of the extract solution for 24 h, 72 h, and 120 h, respectively, and evaluated cytotoxicity of the polymerized SADRC with CCK-8 assay in optical density (OD) values, relative growth rates (RGR), and cytotoxicity grades. Statistical analysis was conducted using a two-way ANOVA followed by post hoc Student–Newman–Keuls test. The OD values varied from 0.8930 to 3.2920, the RGR varied from 33.93% to 98.68%, and the cytotoxicity grades varied from 0 to 2. There was significant difference in the OD values among the different cusp inclinations of zirconia (P < 0.001), and there was significant difference in the OD values between the different light curing times in some situations (P < 0.05). The cusp inclination of zirconia affects the in vitro cytotoxicity of SADRC. Prolonging the light curing time from 20 s to 40 s can reduce the in vitro cytotoxicity of SADRC when the cusp inclination of zirconia is smaller than 20°.

show abstract

“…Studies [10,25] found that bond strength is higher when the lightcuring time is prolonged from 20 s to 40 s. Thus, the light-curing time was set to 40 s, as suggested by previous studies [35,36]. Aluminum air abrasion and chemical pretreatment with an MDP-containing universal primer were performed for simulating the clinical routine procedure and follow previous reports [10,37,38].…”

Section: Discussionmentioning

confidence: 98%

Bonding to zirconia: Effects of translucency and cusp inclinations using an experimental methodology

Zhang

Tong

et al. 2021

J Prosthodont Res

View full text Add to dashboard Cite

Influence of polymerization time on properties of dual-curing cements in combination with high translucency monolithic zirconia

Abstract: The first null hypothesis has to be rejected since DC% and MH of the dual-cements tested were influenced by the curing time. The second null hypothesis is partially rejected since the bond strength was influenced by the curing time only for Rely-X Ultimate.

Cited by 31 publications

References 29 publications

Initial curing characteristics of composite cements under ceramic restorations

Initial curing characteristics of composite cements under ceramic restorations

In Vitro Cytotoxicity of Self-Adhesive Dual-Cured Resin Cement Polymerized Beneath Three Different Cusp Inclinations of Zirconia

Bonding to zirconia: Effects of translucency and cusp inclinations using an experimental methodology

Contact Info

Product

Resources

About