Masking Ability of Translucent Monolithic Zirconia Ceramic: The Effect of Thickness

Kassim, Mohd Zulkifli; Mustafa, Nor Wati Nur Atikah; Ahmad, Rohana; Ghani, Siti Mariam Ab; Ghani, Hazlina Abdul

:: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies

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ISSN 2228-9860
eISSN 1906-9642
CODEN: ITJEA8

FEATURE PEER-REVIEWED ARTICLE

Vol.12(9) (2021)
Special Issue on the Universiti Teknologi MARA (UiTM) R&D Showcase

Masking Ability of Translucent Monolithic Zirconia Ceramic: The Effect of Thickness

Mohd Zulkifli Kassim (Centre of Studies for Restorative Dentistry, Faculty of Dentistry, Sungai Buloh Campus, Universiti Teknologi MARA, Jalan Hospital, 47000 Sungai Buloh, Selangor, MALAYSIA and Centre of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, MALAYSIA),
Nor Wati Nur Atikah Mustafa (Centre of Studies for Restorative Dentistry, Faculty of Dentistry, Sungai Buloh Campus, Universiti Teknologi MARA, Jalan Hospital, 47000 Sungai Buloh, Selangor, MALAYSIA),
Rohana Ahmad (Centre of Studies for Restorative Dentistry, Faculty of Dentistry, Sungai Buloh Campus, Universiti Teknologi MARA, Jalan Hospital, 47000 Sungai Buloh, Selangor, MALAYSIA and Integrative Pharmacogenomic Institute, Universiti Teknologi MARA, Puncak Alam Campus, 42300 Puncak Alam, Selangor, MALAYSIA),
Siti Mariam Ab Ghani, Hazlina Abdul Ghani (Centre of Studies for Restorative Dentistry, Faculty of Dentistry, Sungai Buloh Campus, Universiti Teknologi MARA, Jalan Hospital, 47000 Sungai Buloh, Selangor, MALAYSIA).

Disciplinary: Dentistry (Dental Materials, Prosthodontics, Restorative Dentistry, Dental Engineering).
➤ FullText

doi: 10.14456/ITJEMAST.2021.175

Keywords: Masking Ability; Monolithic Zirconia; Acceptable tolerance; Perceptible tolerance; Zirconia thickness; Discolored tooth; Crowns; Tooth color; White acrylic substrate; Opaque luting cement; Substrate; D4 shade composite resin substrate; Dark substrate.
Abstract

The minimum thickness required of monolithic zirconia restorations to achieve sufficient masking ability for optimal aesthetics is unclear. Hence, this study investigates the minimum thickness required to achieve acceptable and perceptible tolerance thresholds by testing monolithic zirconia discs in various thicknesses from 0.4-2.0 mm on a D4 shade substrate using spectrophotometry. Delta-E (ΔE) was calculated and compared with the established acceptable (ΔE = 5.5) and perceptible (ΔE = 2.6) tolerance thresholds. There was a significant negative correlation between thickness and ΔE (R² = 0.952, p < 0.001). The mean ΔE decreases from 13.43 (?0.34) to 3.07 (?0.03) as thickness increases from 0.4 to 2.0 mm. Significant differences in ΔE were detected when there was at least a 0.4 mm difference in thickness between the groups. An acceptable tolerance threshold was achieved with a minimum thickness of 1.4 mm, but the perceptible tolerance threshold was unachievable even at the maximum thickness of 2.0 mm. In conclusion, the masking ability of translucent monolithic zirconia reduces with decreasing thickness, and a minimum thickness of 1.4 mm is recommended for the acceptable masking ability of a dark substrate.

Paper ID: 12A9G

Cite this article:

Kassim, M. Z., Mustafa, N. W. N. A., Ahmad, R., Ab Ghani, S. M., Abdul Ghani, H. (2021). Masking Ability of Translucent Monolithic Zirconia Ceramic: The Effect of Thickness. International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12(9), 12A9G, 1-9. http://doi.org/10.14456/ITJEMAST.2021.175

References

Basso, G. R., Kodama A. B., Pimentel, A. H., Kaizer, M. R., Bona, A. D., Moraes, R. R., & Boscato, N. (2017). Masking colored substrates using monolithic and bilayer CAD-CAM ceramic structures. Operative Dentistry, 42(4), 387-395.
Bayindir, F., & Koseoglu, M. (2020). The effect of restoration thickness and resin cement shade on the color and translucency of a high-translucency monolithic zirconia. The Journal of Prosthetic Dentistry, 123(1), 149-154.
Bremer, F., Grade, S., Kohorst P., & Stiesch, M. (2011). In vivo biofilm formation on different dental ceramics. Quintessence International, 42(7), 565-574.
Choi, Y. J., & Razzoog, M. E. (2013). Masking ability of zirconia with and without veneering porcelain. Journal of Prosthodontics: Implant, Esthetic and Reconstructive Dentistry, 22(2), 98-104.
Conrad, H. J., Seong, W. J., & Pesun, I, J. (2007). Current ceramic materials and systems with clinical recommendations: a systematic review. The Journal of Prosthetic Dentistry, 98(5), 389-404.
Douglas, R.D., & Brewer, J. D. (1998). Acceptability of shade differences in metal ceramic crowns. The Journal of Prosthetic Dentistry, 79(3), 254-260.
Douglas, R.D., Steinhauer, T. J., & Wee, A. G. (2007). Intraoral determination of the tolerance of dentists for perceptibility and acceptability of shade mismatch. The Journal of Prosthetic Dentistry, 97(4), 200-208.
Harada, R., Takemoto, S., Hattori, M., Yoshinari, M., Oda, Y., & Kawada, E. (2015). The influence of colored zirconia on the optical properties of all-ceramic restorations. Dental Materials Journal, 34(6), 918-924.
Kim, H. K., & Kim, S. K. (2016). Optical properties of pre-colored dental monolithic zirconia ceramics. Journal of Dentistry, 55, 75-81.
Kumagai, N., Hirayama, H., Finkelman, M. D., & Ishikawa, S. N. (2013). The effect of translucency of Y-TZP based all-ceramic crowns fabricated with different substructure designs. Journal of Dentistry, 41, e87-e92.
Kurbad, A. (2016). Microveneering technique for esthetic enhancement of monolithic zirconia restorations. International Journal of Computerized Dentistry, 19(2), 165-178.
Kwon, S. J., Lawson N. C., McLaren E. E., Nejat, A. H., & Burgess, J. O. (2018). Comparison of the mechanical properties of translucent zirconia and lithium disilicate. The Journal of Prosthetic Dentistry, 120(1), 132-137.
Malkondu, O., Tinastepe, N., & Kazazoglu, E. (2016). Influence of type of cement on the color and translucency of monolithic zirconia. The Journal of Prosthetic Dentistry, 116(6), 902-908.
Marchack, B. W., Sato, S., Marchack, C. B., & White, S. N. (2011). Complete and partial contour zirconia designs for crowns and fixed dental prostheses: a clinical report. The Journal of Prosthetic Dentistry, 106(3), 145-152.
Nakamura, K., Harada, A., Inagaki, R., Kanno, T., Niwano, Y., Milleding, P., & Ortengren, U. (2015). Fracture resistance of monolithic zirconia molar crowns with reduced thickness. Acta Odontologica Scandinavica, 73(8), 602-608.
Oh, S. H., & Kim, S. G. (2015). Effect of abutment shade, ceramic thickness, and coping type on the final shade of zirconia all-ceramic restorations: in vitro study of color masking ability. The Journal of Advanced Prosthodontics, 7(5), 368-374.
Paravina, R. D., P?rez, M. M., & Ghinea, R. (2019). Acceptability and perceptibility thresholds in dentistry: a comprehensive review of clinical and research applications. Journal of Esthetic and Restorative Dentistry, 31(2), 103-112.
Sulaiman, T. A., Abdulmajeed, A. A., Donovan, T. E., Cooper, L. F., & Walter, R. (2016). Fracture rate of monolithic zirconia restorations up to 5 years: A dental laboratory survey. The Journal of Prosthetic Dentistry, 116(3), 436-439.
Suputtamongkol, K., Tulapornchai, C., Mamani, J., Kamchatphai, W., & Thongpun, N. (2013). Effect of the shades of background substructures on the overall color of zirconia-based all-ceramic crowns. The Journal of Advanced Prosthodontics, 5(3), 319-325.
Tabatabaian, F., Dalirani, S., & Namdari, M. (2019). Effect of thickness of zirconia ceramic on its masking ability: an in vitro study. Journal of Prosthodontics, 28(6), 666-671.
Tabatabaian, F., Khodaei, M. H., Namdari, M., & Mahshid, M. (2016). Effect of cement type on the color attributes of zirconia ceramic. The Journal of Advanced Prosthodontics, 8(6), 449-456.
Tabatabaian, F., Motamedi, E., Sahabi, M., Torabzadeh, H., & Namdari, M. (2018). Effect of thickness of monolithic zirconia ceramic on final color. The Journal of Prosthetic Dentistry, 120(2), 257-262.
Tabatabaian, F., Shabani, S., Namdari, M., & Sadeghpour, K. (2017). Masking ability of a zirconia ceramic on composite resin substrate shades. Dental Research Journal, 14(6), 389.
Tabatabaian, F., Sharif, M. J., Massoumi, F., & Namdari, M. (2017). The color masking ability of a zirconia ceramic on the substrates with different values. Journal of Dental Research, Dental Clinics, Dental Prospects, 11(1), 7.
Tabatabaian, F., Taghizade, F., & Namdari, M. (2018). Effect of coping thickness and background type on the masking ability of a zirconia ceramic. The Journal of prosthetic dentistry, 119(1), 159-165.
Tuncel, ?., Turp, I., & Su?mez, A. (2016). Evaluation of translucency of monolithic zirconia and framework zirconia materials. The Journal of Advanced Prosthodontics, 8(3), 181-186.
Vichi, A., Sedda, M., Fonzar, R. F., Carrabba, M., & Ferrari, M. (2016). Comparison of contrast ratio, translucency parameter, and flexural strength of traditional and "augmented translucency" zirconia for CEREC CAD/CAM system. Journal of Esthetic and Restorative Dentistry, 28, S32-S39.
Wang, F., Takahashi, H., & Iwasaki, N. (2013). Translucency of dental ceramics with different thicknesses. The Journal of Prosthetic Dentistry, 110(1), 14-20.
Zhang, Y., Mai, Z., Barani, A., Bush, M., & Lawn, B. (2016). Fracture-resistant monolithic dental crowns. Dental Materials, 32(3), 442-449.

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