In vitro Study of the Effect of Internal Relief Space on the Color of Ceramic Laminate Veneer


  • Abd El Azeem Mostafa Department of Fixed Prosthodontics, Faculty of Dentistry, South Valley University, Qena, Egypt
  • Cherif A. Mohsen Department of Fixed Prosthodontics, Faculty of Dentistry, Minia University, Minia, Egypt



color, translucency, ceramic, internal relief, veneer.


BACKGROUND: Ceramic laminate veneer restoring is considered a challenging modality in solving various esthetic dental problems.

AIM: The purpose of this study was to investigate the effect of digital internal relief space on the color of ceramic laminate veneer.

MATERIALS AND METHODS: An acrylic central incisor model was prepared for ceramic laminate veneer with standard measures. The prepared acrylic resin dentotype model was scanned with intraoral computer-aided design/computer-aided manufacturing (CAD/CAM) optical scanner (CEREC Omnicam|Dentsply Sirona). The laminate veneer design was planned on the optically scanned preparation on CAD/CAM system software (CEREC software|Dentsply Sirona). Thirty ceramic laminate veneer specimens were machined from zirconia-reinforced lithium silicate (Celtra Duo blocks, Dentsply/Sirona) according to standard design by CAD/CAM system with the change of the digital internal relief space settings. The specimens were divided into three groups according to their digital internal relief settings (IRS) (20, 60, and 100 μm) (n = 10). Thirty epoxy dies were duplicated from the prepared acrylic model. The ceramic laminate veneer specimens were cemented to epoxy dies with total etch resin cement system according to the manufacture instructions. The color change (ΔE) of the cemented ceramic laminate veneer specimens was measured by spectrophotometer (Vita Easy shade, Ivoclar Vivadent AG, Schaan, Liechtenstein) using the CIELAB scale and L*, a*, b*. Each specimen was measured two times (before and after cementation). The value of color difference (ΔE) was calculated according to the formula: ΔE = [(L*2 - L*1)2 + (a*2 - a*1)2 + (b*2- b*1) 2]½.

RESULTS: The highest mean value of ΔE was recorded in G100 group (1.91 ± 0.33), followed by G60 group (1.83 ± 0.09), with the least value recorded in G20 group (1.49 ± 0.49). Analysis of variance test revealed a statistically significant difference between groups (p = 0.024).

CONCLUSION: The change of the digital IRS affects the color of ceramic laminate veneers.


Download data is not yet available.


Metrics Loading ...

Plum Analytics Artifact Widget Block


Granell-Ruiz M, Fons-Font A, Labaig-Rueda C, Martínez- González A, Rodríguez JL, Ruiz MF. A clinical longitudinal study 323 porcelain laminate veneers. Period of study from 3 to 11 years. Med Oral Patol Oral Cir Bucal. 2010;15:e531-7. PMid:20038893

Fradeani M, Redemagni M, Corrado M. Porcelain laminate veneers: 6-to 12-year clinical evaluation-a retrospective study. Int J Periodontics Restorative Dent. 2005;25(1):9-17. PMid:15736774

Font AF, Ruiz F, Ruíz MG, Rueda CL, González AM. Choice of ceramic for use in treatments with porcelain laminate veneers. Med Oral Patol Oral Cir Bucal. 2006;11(3):E297-302. PMid:16648772

Perroni AP, Kaizer MR, Bona AD, Moraes RR, Boscato N. Influence of light-cured luting agents and associated factors on the color of ceramic laminate veneers: A systematic review of in vitro studies. Dent Mater. 2018;34(11):1610-24. PMid:30213524

Nejatidanesh F, Savabi G, Amjadi M, Abbasi M, Savabi O. Five year clinical outcomes and survival of chairside CAD/CAM ceramic laminate veneers-a retrospective study. J Prosthodont Res. 2018;62(4):462-7. PMid:29936052

Iwai T, Komine F, Kobayashi K, Saito A, Matsumura H. Influence of convergence angle and cement space on adaptation of zirconium dioxide ceramic copings. Acta Odontol Scand. 2008;66(4):214-8. PMid:18607834

Alghazzawi TF, Liu PR, Essig ME. The effect of the computer luting space setting on the fracture strength of CAD/CAM generated ceramic copings. Smile Dent J. 2014;9(3):14-8.

Badran N, Kader SA, Alabbassy F. Effect of incisal porcelain veneering thickness on the fracture resistance of CAD/ CAM zirconia all-ceramic anterior crowns. Int J Dent. 2019;2019:6548519. PMid:31534456

Pallis K, Griggs JA, Woody RD, Guillen GE, Miller AW. Fracture resistance of three all-ceramic restorative systems for posterior applications. J Prosthet Dent. 2004;91(6):561-9. PMid:15211299

El Sayed SM, Basheer RR, Bahgat SF. Color stability and fracture resistance of laminate veneers using different restorative materials and techniques. Egypt Dent J. 2016;62:1-15.

Mohammed BK. Evalution of Fracture Resistance of Cerasmart and Lithium Disilcate Ceramic Veneers with Different Incisal Preparation Designs. 2019.

Chai SY, Bennani V, Aarts JM, Lyons K, Lowe BJ. Effect of incisal preparation design on load-to-failure of ceramic veneers. J Esthet Restor Dent. 2020;32(4):424-32. PMid:32270920

Hamza TA, Al-Baili MA, Abdel-Aziz MH. Effect of artificially accelerated aging on margin fit and color stability of laminate veneers. Stomatol Dis Sci. 2018;2:1.

Hernandes DK, Arrais CA, Cesar PF, Rodrigues JA. Influence of resin cement shade on the color and translucency of ceramic veneers. J Appl Oral Sci. 2016;24(4):391-6. PMid:27556211

Sen N, Us YO. Mechanical and optical properties of monolithic CAD-CAM restorative materials. J Prosthet Dent. 2018;119(4):593- 9. PMid:28781072

Mohamed IS. Evaluation of Marginal Integrity of Laminate Veneers Constructed from Two Different Ceramic Materials, CU Theses; 2020.

Baldissara P, Wandscher VF, Marchionatti AM, Parisi C, Monaco C, Ciocca L. Translucency of IPS e. max and cubic zirconia monolithic crowns. J Prosthet Dent. 2018;120(2):269- 75. PMid:29475752

Douglas RD, Przybylska M. Predicting porcelain thickness required for dental shade matches. J Prosthet Dent. 1999;82(2):143-9. PMid:10424975

Turgut S, Bagis B. Effect of resin cement and ceramic thickness on final color of laminate veneers: An in vitro study. J Prosthet Dent. 2013;109(3):179-86. PMid:23522367

Hoorizad M, Valizadeh S, Heshmat H, Tabatabaei SF, Shakeri TJ. Influence of resin cement on color stability of ceramic veneers: In vitro study. Biomater Investig Dent. 2021;8(1):11-7. PMid:33554126

Alqahtani MQ, Aljurais RM, Alshaafi MM. The effects of different shades of resin luting cement on the color of ceramic veneers. Dent Mater J. 2012;31(3):354-61. PMid:22673474

Ravi A, Raj RS, Babu AS, Keepanasseril A, Mathew A. Effectiveness of shade and thickness of resin cement on the final colour of the porcelain laminate veneer: A scoping review. J Clin Diagn Res. 2019;13(2):ZE01-5.

Cho SH, Chang WG, Lim BS, Lee YK. Effect of die spacer thickness on shear bond strength of porcelain laminate veneers. J Prosthet Dent. 2006;95(3):201-8. PMid:16543017

Zaghloul KI, Mohsen CA. Translucency of cad/cam veneers using different internal relief spaces and luting cement shades. Indian J Public Health Res Dev. 2020;11(6):1316-22.

Hmaidouch R, Neumann P, Mueller WD. Influence of preparation form, luting space setting and cement type on the marginal and internal fit of CAD/CAM crown copings. Int J Comput Dent. 2011;14(3):219-26. PMid:22141231

Liu HL, Lin CL, Sun MT, Chang YH. Numerical investigation of macro-and micro-mechanics of a ceramic veneer bonded with various cement thicknesses using the typical and submodeling finite element approaches. J Dent. 2009;37(2):141-8. PMid:19084316

Sabarinathan S, Sreelal T, Rajambigai A, Anusuya S. Evaluation of influence of die spacer thickness on the shear bond strength of porcelain laminate veneers: An in vitro study. Indian J Stomatol. 2016;7(2):42.

Paris S, Schwendicke F, Keltsch J, Dörfer C, Meyer-Lueckel H. Masking of white spots lesions by resin infiltration in vitro. J Dent. 2013;41 Suppl 5:e28-34. PMid:23583919




How to Cite

Mostafa AEA, Mohsen CA. In vitro Study of the Effect of Internal Relief Space on the Color of Ceramic Laminate Veneer. Open Access Maced J Med Sci [Internet]. 2021 Feb. 26 [cited 2024 Apr. 18];9(D):37-42. Available from: