Relyx unicem 2 automix

Manufactured by 3M

Sourced in Germany

RelyX Unicem 2 Automix is a self-adhesive, dual-curing resin cement designed for the permanent cementation of indirect restorations. It features an automated mixing and delivery system.

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Lab products found in correlation

Ips ceramic etching gel, by Ivoclar Vivadent (1 mentions) Elipar deep cure, by 3M (1 mentions) Ketac cem aplicap, by 3M (1 mentions) Multilink automix, by Ivoclar Vivadent (1 mentions) Relyx ultimate, by 3M (1 mentions)

7 protocols using relyx unicem 2 automix

Bonding Endocrowns with Silane and Resin Cement

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Etching with 5% hydrofluoric acid (IPS Ceramic Etching Gel, Ivoclar Vivadent, Schaan, Liechtenstein) for 20 seconds was done on the tissue surfaces of endocrowns in IPS e.max CAD and Vita Suprinity groups and 60 seconds for Vita Enamic. After etching, each restoration was cleaned in an ultrasonic apparatus for five minutes and then dried with oil-free air spray. A thin layer of silane coupling agent (Prosil; FGM) was applied to the internal walls of the endocrowns for 60 seconds and then air-dried.
Self-adhesive resin composite cement (RelyX Unic-em 2 Automix, 3 M ESPE, Seefeld, Germany) with a 1: 1 base-catalyst ratio was mixed to obtain a uniform consistency. The cement was used on the tissue surface of the endocrowns. The restoration was placed on the tooth with a 3 kg weight in a load applicator. The excess cement was removed after 2-3 minutes from the start of the mix. Then the cement was light-activated for 20 seconds. A light-emitting diode curing unit (Demetron A.1, Kerr/Sybron, Orange, CA, USA) with a 12-mm diameter curing light tip
and irradiance output of 1000±50mW/cm² was used. The surface-tip distance was 0.5mm (Figure 5).
After cementation, all samples were kept in an incubator (Model 2; Precision Scientific Co., Columbus, OH, USA) at 37°C for 24 hours.

Fayyazi A., Habibi L., Heidari B, & Tavakolizadeh S. (2023). Tensile Bond Strength and Retention of Three Types of Ceramic Endocrowns. Journal of Dentistry, 24(1), 34-40.

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Bonding Technique for Dental Crowns

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The surface of the dies were sandblasted with 50 µm aluminium oxide particles and cleaned in an ultrasonic water bath. Each crown was bonded onto its respective die using a self-adhesive resin cement (RelyX Unicem 2 Automix, 3M ESPE, Seefeld, Germany). A standardized static load (20 N) was applied on the occlusal surface of each crown for 30 s, and then the excess cement was removed from the margins using a micro-brush. All the specimens were light-cured for 20 s from the buccal and lingual aspects using an LED light-curing unit (Elipar DeepCure, 3M ESPE) with an output of 1,470 mW/cm 2 .
The intensity was verified in every 10 samples using a digital radiometer (Cure Rite, Dentsply, Milford, DE, USA) to ensure uniform curing. Specimens were stored in a moist environment for 24 h at 37°C in an incubator before the mechanical testing (Incubator I, Memmert, Schwabach, Germany).

Al-Qaysi S.H., Saleh A.R.M, & El-Damanhoury H.M. (2022). Fracture resistance and failure mode of layered translucent zirconia with different crown designs. Dental materials journal, 41(1).

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Surgical Implantation of Head-Bar in Mice

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Mice were implanted with a T-shaped head-bar at least 2.5 weeks before the day of the recording. Mice were anesthetized with 2% isoflurane, the scalp was removed, the skull was disinfected with alcohol and povidone iodine, and scored with bone scraper. The edge of the skin was glued to the skull and the metal head-bar was sterilized and mounted using dental cement (Ortho-Jet powder; Lang Dental) mixed with black paint (iron oxide), or Relyx Unicem2 automix (3M ESPE). The head-bar was stereotactically mounted with the help of an inclinometer (Digi-Key electronics 551-1002-1-ND). The inclinometer allowed us to adjust the angle of the head bar in relation to the sagittal and medio-lateral axes of the head. Following the bar implantation, black dental cement was used to build a recording well surrounding the recording site. The surface of the skull above the left visual cortex was not covered with dental cement but was coated with a thin layer of transparent cyanoacrylate glue. Mice were injected subcutaneously with 0.1 mg/kg buprenorphine and checked daily after the head-bar surgery. For at least 4 days before recording, mice were habituated to head fixation within the recording setup.

Bouvier G., Senzai Y, & Scanziani M. (2020). Head movements Control the Activity of Primary Visual Cortex in a Luminance Dependent Manner. Neuron, 108(3), 500-511.e5.

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Zirconia Restoration Cementation Comparison

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Three luting agents with clinical indication for the cementation of zirconia-based restorations were selected for testing: a hand-mix zinc phosphate cement (ZPC) (Fortex, Faciden), a self-mixing and single-dose capsule glass ionomer cement (GIC) (Ketac Cem Aplicap, 3M Oral Care, St Paul, MN, USA); and an auto-mixture resin cement (RC) (RelyX Unicem 2 Automix, 3M Oral Care, St Paul, MN, USA). The cementation procedures were performed by a single operator, who performed 5 pre-testing sample assemblies per cement group (ZPC, GIC and RC) both in the OC6 and OC12 dies (total pre-testing n = 30).
Following the previously described calibration, the testing zirconia copings were cemented over their respective abutments by the same operator calibrated under identical conditions of temperature and humidity. Luting agents were manipulated following the manufacturer recommendations. The mixture was performed for each sample individually and then applied onto the intaglio surface of the zirconia coping. A controlled and constant cementation pressure of 20 N was applied for all samples. This pressure was kept for 3 min for ZPC, 7 min for GIC and 6 min for RC. In summary, after cementation, six groups (n = 10) were obtained as follows:

Group 1: OC6 + ZPC.

Group 2: OC6 + GIC.

Group 3: OC6 + RC.

Group 4: OC12 + ZPC.

Group 5: OC12 + GIC.

Group 6: OC12 + RC.

Sánchez-Monescillo A., González-Serrano C., González-Serrano J., Malta Barbosa J., López-Suárez C, & Duarte S J.r. (2021). Effect of Luting Cement and Convergence Angle of the Preparation on the Internal Fit of Zirconia Restorations. Materials, 14(24), 7858.

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Evaluating Gingival Fibroblast Viability on Dental Cements

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Viability and morphology of human gingival fibroblast (HGF) cells were evaluated after 24 h cultivation on discs of an adhesive (Multilink Automix, Ivoclar Vivadent, Ellwangen, Germany [MLA]) and a self-adhesive resin composite cement (RelyX Unicem 2 Automix, 3 M, Neuss, Germany [RUN]) (Table 1). Cement specimens were produced using either autopolymerization or light-curing and with three different surfaces treatments.Table 1

Cement materials used in this study

Code	MLA	RUN
Name	Multilink Automix	RelyX Unicem 2 Automix
Manufacturer	Ivoclar Vivadent	3 M
Type	Adhesive resin composite cement	Self-adhesive resin composite cement
Monomers	Base paste: Bis-GMA, HEMA, 2-dimethylaminoethyl methacrylate Catalyst paste: Ethyoxylated bisphenol A dimethacrylate, UDMA, HEMA	Base paste: TEGDMA, Phosphoric acid- modified methacrylate monomers, Bifunctional methacrylate Catalyst paste: Methacrylate monomers
Fillers	40 vol% •Barium glass •Ytterbium trifluoride •Spheroid mixed oxide Particle size: 0.25–3.0 μm	43 vol% •Alkaline (basic) fillers •Silanated fillers Particle size: 12.5 μm
Initiators	Dibenzoyl peroxide	Sodium toluene-4- sulphinate, Sodium persulfate, Tert-butyl 3,5,5-trimethylperoxyh- exanoate

Abbreviations: Bis-GMA Bisphenol A diglycidylmethacrylate, HEMA 2-hydroxyethyl methacrylate, MLA Multilink Automix, RUN RelyX Unicem 2 Automix, UDMA Urethane dimethacrylate, TEGDMA Triethylene glycol dimethacrylate

Rohr N., Baumann C., Märtin S, & Zitzmann N.U. (2022). Influence of surface treatment and curing mode of resin composite cements on fibroblast behavior. Head & Face Medicine, 18, 18.

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Cementation of Ceramic Dental Crowns

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The prepared abutment teeth and the ceramic crowns were cleaned with a Steamer X3 (Amann Girrbach AG, Koblach, Austria) and were slightly air dried before cementation. No further conditioning of the abutment teeth or the ceramic crowns was applied. All of the crowns were cemented with self-adhesive dual-curing resin cement (RelyX Unicem 2 Automix; color A2, 3M Espe, Seefeld, Germany) according to the manufacturer’s instructions. The crowns were seated with finger pressure for ten seconds and were then axially loaded for 10 min with an adapter (Metal Dölz, Kraftsdorf/Harpersdorf, Germany) that ensured a defined axial load of 60 N (6 kg). Light curing was performed for two seconds per crown surface. After that, the excess cement was carefully removed with a foam pellet and scaler. Then, the pro crown surface was exposed to light curing and was exposed for 20 s again. The marginal fit of the crown was checked by visual inspection.

Naumova E.A., Schneider S., Arnold W.H, & Piwowarczyk A. (2017). Wear Behavior of Ceramic CAD/CAM Crowns and Natural Antagonists. Materials, 10(3), 244.

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Implant Crown Evaluation Protocol

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One month after implantation, a reexamination was performed. At this point in time, the implants were randomly assigned to one of the following three groups:
Final impressions were taken 2 to 4 months after implantation with a polyether impression material (Permadyne^TM, 3M, Saint Paul, MN, USA) using an implant pick-up and the closed-tray technique (Figure 2b). Final crowns were cemented after close examination of the biological, functional, and aesthetic aspects. (For the zirconia, Rely X Unicem 2 Automix (3M) was used; for the polymer-infiltrated ceramic, VITA Adiva F-Cem (VITA Zahnfabrik) was used; and for the polymer, Rely X Ultimate (3M) was used).
The baseline examination was performed 1–2 weeks after crown cementation (Figure 2c), and the first follow-up took place after 1 year (Figure 2d). Further follow-up examinations are scheduled to take place 3 and 5 years post-implantation.

Balmer M., Fischer C., Pirc M., Hämmerle C.H, & Jung R.E. (2022). Results at the 1-Year Follow-Up of a Prospective Cohort Study with Short, Zirconia Implants. Materials, 15(16), 5584.

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