Bonding Strength of Resin Cement to Silicate Glass Ceramics for Dental CAD/CAM Systems is Enhanced by Combination Treatment of the Bonding Surface

The objective of this paper is to inform on the indications, appearance and advantages offered by each category of materials used in CAD / CAM technique for different prosthetic restorations.Modern techniques in restorative dentistry include CAD/CAM systems and materials that can be CAD/CAM processed. It is very important to know the physical-chemical properties and the indications of these materials to translate the patient’s wishes to reality providing the ideal restoration. There are a variety of CAD/CAM materials to choose from, all designed to provide efficient restoration design and production. We can choose from available materiales including glass ceramics, nano ceramics, zirconia, hybrid ceramics, BioHPP, in blocks or disks form. Keywords: CAD/CAM technology, CAD/CAM materials, properties, indications

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Review of Different Materials that can be CAD/CAM Processed Description, chemical composition, indications in dentistry areas

Revista de Chimie ◽

10.37358/rc.19.11.7696 ◽

2019 ◽

Vol 70 (11) ◽

pp. 4029-4034

Author(s):

Daniela Popa ◽

Mariana Constantiniuc ◽

Kamel Earar ◽

Veronica Mercut ◽

Monica Scrieciu ◽

...

Keyword(s):

Chemical Composition ◽

Glass Ceramics ◽

Chemical Properties ◽

Restorative Dentistry ◽

Physical Chemical ◽

Cad Cam ◽

Materials Used ◽

Cam Systems ◽

The Ideal ◽

Design And Production

The objective of this paper is to inform on the indications, appearance and advantages offered by each category of materials used in CAD / CAM technique for different prosthetic restorations.Modern techniques in restorative dentistry include CAD/CAM systems and materials that can be CAD/CAM processed. It is very important to know the physical-chemical properties and the indications of these materials to translate the patient�s wishes to reality providing the ideal restoration. There are a variety of CAD/CAM materials to choose from, all designed to provide efficient restoration design and production. We can choose from available materiales including glass ceramics, nano ceramics, zirconia, hybrid ceramics, BioHPP, in blocks or disks form.

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Effect of Finishing and Polishing on Roughness and Gloss of Lithium Disilicate and Lithium Silicate Zirconia Reinforced Glass Ceramic for CAD/CAM Systems

Operative Dentistry ◽

10.2341/16-381-l ◽

2018 ◽

Vol 43 (1) ◽

pp. 90-100 ◽

Cited By ~ 20

Author(s):

A Vichi ◽

R Fabian Fonzar ◽

C Goracci ◽

M Carrabba ◽

M Ferrari

Keyword(s):

Surface Treatment ◽

Glass Ceramics ◽

Lithium Silicate ◽

Material Surface ◽

Cad Cam ◽

Group A ◽

Treatment Interaction ◽

Group B ◽

Cam Systems ◽

Significant Factors

SUMMARY Objective: To assess the efficacy of dedicated finishing/polishing systems on roughness and gloss of VITA Suprinity and IPS e.max CAD. Method: A total of 24 blocks of Suprinity and 24 of e.max were cut into a wedge shape using an InLab MC-XL milling unit. After crystallization, the 24 Suprinity wedges were divided into four subgroups: group A.1: Suprinity Polishing Set Clinical used for 30 seconds and group A.2: for 60 seconds; group A.3: VITA Akzent Plus Paste; and group A.4: spray. The 24 e.max wedges (group B) were divided into four subgroups according to the finishing procedure: group B.1: Optrafine Ceramic Polishing System for 30 seconds and group B.2: for 60 seconds; group B.3: IPS e.max CAD Crystall/Glaze paste; and group B.4: spray. After finishing/polishing, gloss was assessed with a glossmeter and roughness evaluated with a profilometer. Results were analyzed by applying a two-way analysis of variance for gloss and another for roughness (α=0.05). One specimen per each subgroup was observed with a scanning electron microscope. Results: For roughness, materials and surface were significant factors (p<0.001). Suprinity exhibited significantly lower roughness than e.max. Also the Material-Surface Treatment interaction was statistically significant (p=0.026). For gloss, both material and surface treatment were significant factors (p<0.001). VITA Suprinity showed significantly higher gloss than e.max. Also the Material-Surface Treatment interaction was statistically significant (p<0.001). Conclusions: Manual finishing/polishing for 60 seconds and glazing paste are the most effective procedures in lowering the roughness of CAD/CAM silica-based glass ceramics. Manual finishing/polishing for 60 seconds allows milled silica-based glass ceramics to yield a higher gloss. VITA Suprinity displayed higher polishability than IPS e.max CAD.

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Evaluation of Bonding Resistance after Surface Treatment of Two Glass-Ceramics Used in Dentistry

Materials Science Forum ◽

10.4028/www.scientific.net/msf.912.165 ◽

2018 ◽

Vol 912 ◽

pp. 165-169

Author(s):

Cláudio Luis Melo-Silva ◽

Tereza Cristina Favieri Melo-Silva ◽

Cristiane Fonseca Carvalho ◽

A.B. Teixeira ◽

E.C. Carvalho ◽

...

Keyword(s):

Surface Treatment ◽

Hydrofluoric Acid ◽

Bonding Strength ◽

Glass Ceramics ◽

Resin Cement ◽

Control Group ◽

Dental Ceramics ◽

Control Groups ◽

The Times

The goal of this study was to evaluate the bonding resistance of two dental ceramics. The samples, one of each type of ceramics, were split into 4 groups (n=4) separated from those from control group, the others were conditioned with 5% hydrofluoric acid, according to the times of 20, 40 and 60 seconds. Cylindrical pins of resin cement were applied in each sample. After a shearing test, the obtained results showed that experimental groups has given higher bonding strength values than the control groups for both ceramics. For the e.max ceramic, the highest values were observed with timings of 20 and 40 seconds and for the Suprinity ceramic the conditioning timings were insignificant. The authors concluded that the surface treatment with hydrofluoric acid improved the bonding strength for both ceramics; and the e.max ceramic showed higher bonding values than the Suprinity.

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The Effects of a coffee beverage and whitening systems on surface roughness and gloss of CAD/CAM lithium disilicate glass ceramics

Journal of Applied Biomaterials & Functional Materials ◽

10.1177/22808000211058866 ◽

2021 ◽

Vol 19 ◽

pp. 228080002110588

Author(s):

Sarah S. Al-Angari ◽

Shahad Meaigel ◽

Nouf Almayouf ◽

Shahad Quwayhis ◽

Abdulelah Aldahash ◽

...

Keyword(s):

Surface Roughness ◽

Computer Aided Design ◽

Glass Ceramics ◽

Lithium Disilicate ◽

Control Group ◽

Computer Aided ◽

Cad Cam ◽

The Mean ◽

Surface Gloss ◽

Cam Systems

Objectives: To investigate the effects of a coffee beverage and two whitening systems on the surface roughness and gloss of glazed Lithium Disilicate Glass-Ceramics (LDGC) for computer-aided design/computer-aided manufacturing (CAD/CAM) systems. Methods: Sixty-eight LDGC disks (12 × 10 × 2 mm) were prepared from blocks of CAD/CAM systems (IPS e.max CAD ceramic). Baseline measurements for surface roughness (Ra) and gloss (GU) were taken using a 3-D optical profilometer and a glossmeter, respectively; then specimens were randomized into four groups ( n = 17). All specimens were immersed in a coffee solution (24 h × 12 days) then subjected to two whitening systems. G1-negative control (kept moist × 7 days); G2-positive control (brushed with distilled water, 200 g/load, 2 min twice daily × 7 days); G3-whitening toothpaste (Colgate optic white; relative dentin abrasivity (RDA) = 100, 200 g/load, 2 min twice daily × 7 days); and G4-simulated at-home bleaching protocol (Opalescence,15% carbamide peroxide (CP), 6 h/day × 7 days). The study outcomes were measured at baseline and after the treatments. Data were analyzed using paired T-test and one-way ANOVA (α = 0.05). Results: The mean surface roughness significantly increased ( p ⩽ 0.002) for all groups after the designated treatment protocols. Among groups, the mean surface roughness of G2 and G3 were significantly higher ( p ⩽ 0.001) (Ra: 0.51 and 0.57 μm, respectively) compared to the control group (Ra: 0.23 μm), and were not significantly different from G4 (Ra: 0.46 μm). Surface gloss decreased with no significant change within or among groups after treatment. Conclusion: All glazed LDGC had a significant increase in surface roughness after being subjected to simulated 1 year of coffee drinking and whitening systems (15% CP and whitening toothpaste), and the greatest change was associated with brushing (simulating 8 months). However, coffee beverages and whitening systems had no significant effect on the surface gloss.

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