Abstract Objectives To compare translucency of the ceramic materials ( CEREC CAD / CAM ). Materials and Methods Fifteen for system were evaluated: IPS e.max HT/LT/MO , ZirCAD E mpress HT/LT ; VITA M ark II AL; YZ, In ‐ C eram S pinell/ A lumina/ Z irconia; Sirona I n oris InCoris ZI/TZI. Specimens (0.5‐mm 1.0‐mm thick; = 10 each material) cut from commercial blocks using a water‐cooled diamond saw. Contrast ratio CR Y B /Y W ) was measured spectrophotometer with an integrating sphere. K...

SUMMARY Objective: To assess the efficacy of dedicated finishing/polishing systems on roughness and gloss VITA Suprinity IPS e.max CAD. Method: A total 24 blocks were cut into a wedge shape using an InLab MC-XL milling unit. After crystallization, wedges divided four subgroups: group A.1: Polishing Set Clinical used for 30 seconds A.2: 60 seconds; A.3: Akzent Plus Paste; A.4: spray. The (group B) subgroups according to finishing procedure: B.1: Optrafine Ceramic System B.2: B.3: CAD...

Abstract Purpose Tetragonal zirconia polycrystals ( TZP ) can be used via CAD / CAM technique as metal replacement for fixed partial dentures. However, its intense white color and high opacity may represent an aesthetic limit. New TZPs with a claimed higher degree of translucency were recently marketed. The aim the study was to investigate contrast ratio CR ), parameter TP flexural strength (σ), Weibull characteristic (σ 0 modulus m three “traditional” IPS e.max Zir‐CAD , inCoris ZI VITA...

Biomechanical integrity of endodontically treated teeth (ETT) is often compromised. Degree hard tissue loss and type final prosthetic restoration should be carefully considered when making a treatment plan. The objective this prospective clinical trial was to assess the influence as well degree on 7-y performance ETT restored with fiber posts. Two groups ( n = 60) were defined depending needed: 1) single unit porcelain-fused-to-metal (PFM) crowns (SCs) 2) 3- 4-unit PFM fixed dental...

To evaluate surface roughness and gloss of feldspathic ceramic blocks for chairside CAD/CAM systems before after finishing polishing.VITA Mark II the CEREC system were cut perpendicularly in order to obtain a total 70 specimens (14 × 18 3 mm). The flat was roughened using grinder/polisher with dry 120-grit silicone-carbide paper. Surface measured digital profilometer (Ra) glossmeter (GU), respectively. Specimens randomly divided into seven groups (n=10) based on finishing/polishing as...

Zirconia (ZrO₂) and titanium nitride (TiN) implant abutments were introduced mainly for esthetic purposes, as titanium's gray color can be visible through mucosal tissues. This study was aimed at assessing whether ZrO₂ TiN could achieve better esthetics in comparison with (Ti) abutments, regarding the appearance of soft tissues.Ninety patients included study. Each patient provided an (OsseoSpeed, Dentsply Implant System). A two-stage surgical technique performed. Six months later, reentry...

PURPOSE To evaluate the influence of hydrofluoric acid (HF) concentration and etching time on microshear bond strength (µSBS) RelyX Unicem 2 (3M Oral Care) to VITA Suprinity (Vita Zahnfabrik; zirconia-reinforced lithium-silicate glass ceramic: ZLS) IPS e.max CAD (Ivoclar Vivadent; lithium-disilicate LD). MATERIALS AND METHODS Forty-eight bars each were fabricated ZLS LD with Cerec InLab MC-XL. For material, 8 groups formed respect (20, 40, 60, 120 s) HF (4.9% 9.5%). In group, after...

To evaluate the adhesion to CAD/CAM feldspathic blocks by failure analysis and shear bond strength test (SBSt) of different restorative systems surface treatments, for purpose moderate chipping repair.MATERIALS AND METHODS.A self-adhering flowable composite (Vertise Flow, Kerr) containing bi-functional phosphate monomers a conventional resin (Premise applied with without adhesive system (Optibond Solo Plus, were combined three treatments (Hydrofluoric Acid Etching, Sandblasting, combination...

The study assessed push0out strength, cement layer thickness and interfacial nanoleakage of luted fiber posts fabricated with CAD0CAM technology following three different scanning techniques: direct the post space (DS); a polyether impression (IS) plaster model (MS).Thirty premolars were randomly assigned to 3 groups according technique.Posts computer0 designed milled from experimental fiber0reinforced composite blocks.The mean standard deviation values strength thickness, respectively,...

To investigate the influence of opacity and color luting cements on final shade metal-free restorations.Five resin cement colors in combination with four different thicknesses CAD/CAM ceramic materials were tested, a composite substrate was used as dentin reference (n = 3). Specimen measured spectrophotometer equipped an integrating sphere before after cementation (CIELAB). Cement (TP) assessed by measuring tested thickness 1-mm thick disk for each shades. The differences evaluated (ΔE00 )....

To evaluate the applicability as a sealant of new self-adhering flowable resin composite (Vertise Flow, Kerr, VF) by assessing shear bond strength (SBS) to unground enamel and microleakage (microLKG) in sealed pits fissures.Marketed sealants be used combination with phosphoric acid (Guardian Seal, GS) or self-etch adhesive (Adper Prompt-L-Pop/Clinpro Sealant, 3M ESPE, CS) were compared VF. For SBS testing on 10 molars per group used. microLKG assessment, fissures sealing was performed 12...

This study aimed at evaluating the effects of different surface conditionings on microshear bond strength (µSBS) a self-adhesive resin cement to VITA Suprinity (ZLS) and IPS e.max CAD (LD). Three conditioning protocols were performed ZLS LD before luting with (RelyX Unicem 2, RXU): hydrofluoric acid (HF), HF + silane (HF S), or Monobond Etch & Prime (EP). In each group, 15 cylindrical buildups RXU prepared five milled bars submitted µSBS test. Data statistically analyzed two-way ANOVA...

The aim was to assess the influence of cement translucency on retentive strength luted fiber posts. Twenty extracted human premolars were randomly divided into four equal groups, based combinations materials be tested. Two post types same size, shape, and chemical composition, but different light‐transmission properties [Translucent ( TP ) Opaque OP )] selected. two using etch‐and‐rinse, light‐curing adhesive in combination with shades resin markedly light‐transmitting ability [Transparent...

To evaluate the bonding ability of self-adhesive and dual-cure resin cement systems applied to zirconia materials different translucency in combination with each other titanium.Computer-aided design/computer-assisted manufacture (CAD/CAM) disks three (Zenostar MO 0 [medium opacity], MT translucency], T 1 [translucent], Wieland Dental) were milled hard sintered order obtain cylindrical samples either 12 mm high × diameter (used as a substrate) or 8 (to be bonded substrate). CAD/CAM titanium...

Despite the advent of metal-free solutions, porcelain-fused-to-metal restorations (PFM) are still widely used. Particularly for latest ceramic systems, scarce information is present in scientific literature about ideal opaque layer thickness and alloy color impact to achieve desired final PFM restorations. This study aimed evaluate influence variation layered on different metal alloys Opaque porcelain one metal–ceramic system (VITA VM13) was four thicknesses (0.10 mm, 0.15 0.20 0.25 mm)...