The bonding interface of 3.0 mm in diameter was standardized using polyethylene tape. The veneer specimens were bonded to the conditioned bovine enamel surfaces using either Super-Bond C&B (Sun Medical, Moriyama, Japan) or RelyX™ U200 (3M-ESPE St. Paul, MN, USA) according to the manufacturer's instructions. Veneer fixing was performed under a constant perpendicular load of 1 kg for 10 min using a customized tool. The Super-Bond C&B groups were left to set in self-curing mode while the RelyX™ U200 groups were light-cured for 40 s with an LED light curing unit (EliparTrilight™ S10, 3M-ESPE St. Paul, MN, USA). The bonded specimens were stored in distilled water at 37 °C for 24 h in an incubator (Contherm 160 M, Contherm Scientific Ltd, Korokoro, Lower Hutt, New Zealand) following the ISO/TS 11405 standard method.
Relyx u200
Manufactured by 3M
Sourced in United States, Germany, Japan
RelyX U200 is a self-adhesive resin cement formulated for the permanent cementation of dental restorations. It is designed to provide a strong and durable bond between the restoration and the tooth structure.
Automatically generated - may contain errors
Lab products found in correlation
Panavia f2, by Kuraray (3 mentions)
Elipar deepcure l, by 3M (2 mentions)
G cem linkace, by GC Corporation (2 mentions)
Valo cordless, by Ultradent (2 mentions)
Scotchbond universal etchant, by 3M (1 mentions)
Tinkercad, by Autodesk (1 mentions)
Multilink speed, by Ivoclar Vivadent (1 mentions)
Rely x arc, by 3M (1 mentions)
Multilink n, by Ivoclar Vivadent (1 mentions)
Impregum, by 3M (1 mentions)
Ketac cem radiopaque, by 3M (1 mentions)
Heliobond, by Ivoclar Vivadent (1 mentions)
Orthodontic resin, by Dentsply (1 mentions)
Model 6022, by Instron (1 mentions)
N etch, by Ivoclar Vivadent (1 mentions)
Elipar, by 3M (1 mentions)
Elipar deep cure, by 3M (1 mentions)
Scotchbond universal, by 3M (1 mentions)
Bluephase n, by Ivoclar Vivadent (1 mentions)
Sof lex finishing and polishing discs, by 3M (1 mentions)
41 protocols using relyx u200
1
Standardized Bonding of Dental Veneers
2
Dental Cement Bonding Protocols
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Adhesive resin cement (Panavia F2.0; Kuraray Medical Inc., Osaka, Japan) containing methacryloyloxydecyl dihydrogen phosphate (MDP), and self-adhesive resin cement (RelyXTM U200; 3M ESPE, St Paul, MN, USA) containing a self-etching primer were used. The composition of each is summarized in Table 2 .
3
Cementation of Metal Crowns to Abutments
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The metal abutments and the inside of the prepared crown were treated with 32% phosphoric acid gel (ScotchbondTM Universal Etchant, 3M/ESPE, Neuss, Germany) for 30 min and then cleansed with water before being dried. Following this, 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-containing primer (Z-PRIMETM plus, BISCO, Schaumburg, IL, USA) was coated and lightly dried with a drier. We took and evenly mixed a suitable amount of double-polymerized resin cement (Rely-XTM U200, 3M/ESPE, Neuss, Germany), a base agent, and accelerator, which we then filled inside the crown. After this, we applied a compressive force of 49 N using a static-load device to cement the crown to the metal abutment. It was then stored in distilled water at 37 °C for 24 h for an aging treatment.
4
Evaluation of Dental Adhesive Cements
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One hundred and twelve caries-free third molars recently extracted from patients aged 20–30 years because of pericoronitis were collected. Ethics approval number 80/21 from the Ethics Committee at Palacky University and verbal consent of the donors were obtained. The teeth were then cleaned with an ultrasonic scaler and stored in a 10% formalin solution (HistoFOR BFS-L1; Pro-charitus.r.o, CZ), for one week after extraction (Mounajjed et al., 2018 (link)), and then the teeth were kept in distilled water until use. The teeth were tested within a maximum of one month after extraction.
The roots of the teeth were embedded in auto-polymerized acrylic resin (Spofacryl™; SpofaDentala.s, Jičín, CZ) to facilitate handling during the cutting and testing procedures.
Two self-adhesive dual-cure cements, Maxcem Elite Chroma (Kerr, Scafati, Italy) and Relyx U200 (3M ESPE, Neuss, Germany), were used. A conventional resin dual-cure cement, NX3 Nexus (Kerr, Scafati, Italy) (Table 1 ), which requires the application of an adhesive, was also used as an external control group, since the EAR system is still considered as the gold standard for dental adhesion (Parra Lozada & Garzón Rayo, 2012 ).
The roots of the teeth were embedded in auto-polymerized acrylic resin (Spofacryl™; SpofaDentala.s, Jičín, CZ) to facilitate handling during the cutting and testing procedures.
Two self-adhesive dual-cure cements, Maxcem Elite Chroma (Kerr, Scafati, Italy) and Relyx U200 (3M ESPE, Neuss, Germany), were used. A conventional resin dual-cure cement, NX3 Nexus (Kerr, Scafati, Italy) (
5
Shear Bond Strength of Y-TZP Ceramics
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Two self-adhesive resin cements, G-CEM LinkAce (GC Corporation, Tokyo, Japan) and RelyX U200 (3M ESPE, St. Paul, MN, USA), were used for the SBS test. The information on these cements is shown in Table 2 . All of the disc-shaped Y-TZP specimens were distributed 40 per surface treatment group. For each group, half of the specimens were bonded with G-CEM LinkAce resin cylinder, and the rest were bonded with RelyX U200 resin cylinder. Each resin cylinder was made in a uniform size by injecting self-adhesive resin cement into a ready-made plastic jig (Ultradent Jig, Ultradent Products Inc., South Jordan, UT, USA) with a diameter of 2.38 mm and a height of 3 mm, then light polymerized at 1000–1200 mW/cm2 for 20 seconds in three directions with an LED curing light (Elipar™ DeepCure-L, 3M ESPE, St. Paul, MN, USA). At this time, a custom-made positioning stand was used for the Y-TZP specimens embedded in acrylic resin. This stand was manufactured with a CAD program (Tinkercad, Autodesk Inc., San Francisco, CA, USA) and a 3D printer (DIO PROBO, DIO inc., Busan, Korea) (Figure 3 and Figure 4 ).
6
Restoration of Maxillary Incisors with Posts
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The study was conducted at Craniofacial Laboratory of the School of Dental Sciences, Health Campus University Sains Malaysia (USM). The sample size was calculated using PS software (Dupont and Plummer, 1997) based on the standard deviation (σ) of the mean gamma count at 7.33 (8) with 80% power and alpha of 0.05. Fifteen teeth were needed in each study group. With anticipation of 10% of the samples from each group which could pose problems during the procedure, 17 teeth were included in each group, to make a total of 68 teeth in this study. All teeth were collected from government and private dental clinics in Peninsular Malaysia.
The human permanent maxillary incisors with straight single-rooted canal, non-carious or carious teeth without pulpal involvement and that limited to 2mm incisal to cementoenamel junction (CEJ) with mature apices or the teeth that were extracted due to periodontal problem and those free from cracks and defects were included in this study. Exclusion criteria included teeth with extra canal, open apices, calcified canal, curved roots, and resorbed roots. The posts used in this study are as shown inTable 1 . Rely X U200 (3M ESPE, USA) cement was used to cement the posts and crowns in this study.
The human permanent maxillary incisors with straight single-rooted canal, non-carious or carious teeth without pulpal involvement and that limited to 2mm incisal to cementoenamel junction (CEJ) with mature apices or the teeth that were extracted due to periodontal problem and those free from cracks and defects were included in this study. Exclusion criteria included teeth with extra canal, open apices, calcified canal, curved roots, and resorbed roots. The posts used in this study are as shown in
7
Fiber Post Cementation Technique
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This group simulated an ideal adaptation of the post. The fiberglass posts #3 with a diameter compatible with the root canal were cemented into the roots. Before cementation, the posts were placed into the root canal to confirm the position and adaptation through digital radiographs. Then, the posts surface was cleaned with 70% ethanol and conditioned using 35% phosphoric acid for 20 s, then silanized (Prosil, FGM, Joinville, SC, Brazil) for 1 min. Self-adhesive cement (RelyX U200, 3M ESPE, St Paul, MN, United States) coupled to a mixing root canal tip was prepared. The tip was introduced into the root canal and the cement was injected so that the post space was filled. The post was introduced into the post space and excess material was removed. Finally, the cement was cured with a LED curing light with a radiant emittance of 1000 mW/cm 2 . (VALO ® Cordless, Ultradent, South Jordan, UT, United States) directed at the occlusal surface for 40 s.
8
Dual-Cured Resin Luting Cements for Fiber Posts
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Two self-adhesive dual cured resin luting cements were used in this study: Multilink Speed (Ivoclar Vivadent, Schaan, Liechtenstein) and RelyX U200 (3M ESPE, Saint Paul, MN, USA) (Table 1). The manipulation of the materials was performed in accordance with the manufacturers' instructions, and all experiments were carried out at room temperature.
A translucent fiber post system and two types of curing lights were utilized (Table 1).
A translucent fiber post system and two types of curing lights were utilized (Table 1).
9
Cement and Adhesive Protocol for Dental Posts
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RelyX™ ARC and Scotbond Multi-Purpose adhesive (3M – Maplewood, Minnesota, USA) were used for the group of conventional cement. For the RelyX™ U200 (3M – Maplewood, Minnesota, USA), the posts were cemented according to the manufacturer's instruction [Table 1 ]. A lentulo spiral (Lentulo® Paste Carrier 25 mm CA Maillefer – Dentsply, Ballaigues, Switzerland) was used to allow the cement to fill all the root canal extensions.
10
Zirconia Cylinder Cementation Evaluation
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We prepared 96 zirconia cylinders (Lava, 3M ESPE, Seefeld, Germany) that measured 5 mm in diameter and 12 mm in height. The cylinders were densely sintered and washed with acetone in an ultrasonic bath. The cylinders were then rinsed with distilled water, and sterilized by autoclaving at 130℃ for 15 minutes. Then, the cylinders were randomly divided into five groups of 12 cylinders. Group 1 was the negative control group consisting medium alone. Group 2 was the positive control group consisting pairs of cylinders without cement. Groups 3, 4, and 5 consisted pairs of cylinders cemented with RelyX U200 (3M ESPE, St. Paul, MN, USA), FujiCEM 2 (GC, Tokyo, Japan), and Panavia F 2.0 (Kuraray, Okayama, Japan), respectively (Table 1 ). Two cylinders were cemented under pressure and each cement gap was adjusted to 100 µm film thickness.
Each pair of cylinders was immersed in serum-free medium at a volume/surface area ratio of 1 cm2/mL for 14 days at 37℃ in a sealed container. The medium without zirconia was maintained under the same conditions and used as the negative control.
Each pair of cylinders was immersed in serum-free medium at a volume/surface area ratio of 1 cm2/mL for 14 days at 37℃ in a sealed container. The medium without zirconia was maintained under the same conditions and used as the negative control.
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