Effect of artificially accelerated aging on margin fit and color stability of laminate veneers

Hamza, Tamer; Al-Baili, Mohammed A.; Abdel‐Aziz, M.H.

doi:10.20517/2573-0002.2017.09

Cited by 6 publications

(7 citation statements)

References 23 publications

(42 reference statements)

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“…The second part of the null hypothesis was not accepted because the results showed that the color was affected significantly after artificial accelerated aging of both materials. Composite veneered zirconia group showed the greater amount of color change porcelain veneered zirconia group which Significant color changes in the two groups were in disagreement with results found in previous studies (15,24) . It may be attributed to different materials and methods of aging used.…”

Section: 01) Than Composite Veneered Zirconiacontrasting

confidence: 89%

“…Color match and stability are critical determining factors for both initial and the long-term esthetic success of a dental restoration. (14,15) .…”

Section: Monolithic Zirconia Fdps Has Been Recently Used In Different Situationsmentioning

confidence: 99%

“…Samples were further veneered with porcelain VM9 and bredent crealign composite with final dimensions (1 mm) thickness using a custom-made metal mold. These samples were manufactured according to data supplied by literatures (15,24) .…”

Section: 01) Than Composite Veneered Zirconiamentioning

confidence: 99%

See 2 more Smart Citations

Effect of Aging Process on Color Stability and Shear Bond Strength of Veneered Zirconia Ceramics; (Invitro Study)

2019

Ain Shams Dental Journal

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Section: 01) Than Composite Veneered Zirconiacontrasting

confidence: 89%

“…Color match and stability are critical determining factors for both initial and the long-term esthetic success of a dental restoration. (14,15) .…”

Section: Monolithic Zirconia Fdps Has Been Recently Used In Different Situationsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Aging Process on Color Stability and Shear Bond Strength of Veneered Zirconia Ceramics; (Invitro Study)

2019

Ain Shams Dental Journal

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“…Vertical margin gap distance of all crowns was measured using an image analysis system. This method uses image analysis software (Image J-1b, USA) in combination with a stereomicroscope (Olympus, SZ-PT: Japan) (15).…”

Section: Vertical Marginal Gap Distance Measurmentsmentioning

confidence: 99%

Marginal Gap Distance and Fracture Resistance of Lithium Disilicate and Zirconia-Reinforced Lithium Disilicate All-Ceramic Crowns Constructed With Two Different Processing TechniquesWith Two Different Processing Techniques

Sayed

Emam

2019

Egyptian Dental Journal

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Statement of problem: The microstructure and processing methods used to produce any dental restoration might affect the final mechanical outcomes as well as the clinical success. Objectives: The purpose of this study was to evaluate the fracture resistance of lithium disilicate and zirconia reinforced lithium disilicate ceramic crowns constructed using two processing techniques after fatigue loading namely, CAD/CAM technique and pressing technique. The marginal integrity of the crowns was examined before and after fatigue loading. Methods: A total number of thirty-two freshly extracted maxillary first molars were collected. The teeth were chosen to be of similar bucco-lingual and mesiodistal dimensions. The teeth were mounted vertically into epoxy resin templates. Full coverage all-ceramic preparation was performed for all samples using a standardized technique. The prepared teeth were randomly divided into four equal groups (n=8) according to the all-ceramic materials and technique used for crown fabrication as follows: Group I: IPS e-max CAD(EC): eight prepared teeth were restored with machinable lithium disilicate glass ceramics. Group II: Celtra Duo(CD): eight prepared teeth were restored with machinable zirconia-reinforced lithium disilicate glass ceramics. Group III: IPS e-max Press (EP): eight prepared teeth were restored with pressable lithium disilicate glass ceramics. Group IV: Celtra Press (CP): eight prepared teeth were restored with pressable zirconia-reinforced lithium disilicate glass ceramics. The crowns were cemented using self-adhesive resin cement (Rely X Unicem). Vertical margin gap distance of all the crowns was measured using a stereomicroscope. Following vertical marginal gap distance measurements, the samples were subjected to fatigue cyclic loading for 60000 cycles which is equivalent to six months clinical service. The vertical marginal gap distance for all samples were subsequently remeasured after the fatigue loading testing. Fracture resistance test was done using universal testing machine. The fracture load was recorded in Newton. Data was collected, tabulated and statistically analyzed.

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“…There was significant difference between the two materials regardless of thermo cycling with a higher mean value for E-max. After thermo cycling the E-max and Vita enamic recorded a significant increase in the marginal gap compared to the pre-thermo cycling values with a significant difference between them (17) .…”

Section: Discussionmentioning

confidence: 77%

Evaluation of Marginal Accuracy and Color Stability of Lithium Disilicate Laminate Veneer Compared to Hybrid Ceramic Veneer

2019

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Purpose:The purpose of the current study was to evaluate marginal accuracy and color stability of lithium disilicate laminate veneer compared to hybrid ceramic veneer. Materials and Methods: Forty maxillary teeth were collected and prepared (but joint preparation) to receive a laminate veneer. They were equally sub grouped (n= 20) to receive 2 types of laminate veneers (IPS E-max CAD and vita enamic). The veneer was milled from the blocks in a CEREC 3 Machine. All veneers were cemented with resin cement. All samples had been subjected to 20000 thermal cycles which are equivalent twenty years of clinical use. Marginal gap were measured by using universal serial bus (USB) Digital microscope. Colors were measured using a reflective spectrophotometer.Marginal gap and color were measured pre and post thermo cycles. Data were tabulated and statistically analyzed. Results: For the marginal gap, the two tested materials demonstrated an acceptable value. Regarding the color stability there was color change for both groups after thermal cycling with higher mean values for Vita Enamic than E-max and that was statistically insignificant. Conclusion: The E-max veneers recorded less marginal accuracy and more color stability than Vita Enamic and they did not affected by thermo cycling. Codex : 36/1907 azhardentj@azhar.edu.eg

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Effect of artificially accelerated aging on margin fit and color stability of laminate veneers

Cited by 6 publications

References 23 publications

Effect of Aging Process on Color Stability and Shear Bond Strength of Veneered Zirconia Ceramics; (Invitro Study)

Effect of Aging Process on Color Stability and Shear Bond Strength of Veneered Zirconia Ceramics; (Invitro Study)

Marginal Gap Distance and Fracture Resistance of Lithium Disilicate and Zirconia-Reinforced Lithium Disilicate All-Ceramic Crowns Constructed With Two Different Processing TechniquesWith Two Different Processing Techniques

Evaluation of Marginal Accuracy and Color Stability of Lithium Disilicate Laminate Veneer Compared to Hybrid Ceramic Veneer

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