Home Dental Radiology Zirconia restorations – The Journal of the American Dental Association

Zirconia restorations – The Journal of the American Dental Association

by adminjay



Zirconia is a relatively new dental material used for indirect dental restorations.
Little is known about how dental practitioners are using this material in their practice.


A survey on zirconia restorations was developed and administered electronically through
e-mail communications to the American Dental Association Clinical Evaluators (ACE)
Panel on August 31, 2020. Reminders were sent to nonrespondents, and the survey closed
2 weeks after the launch date.


When using zirconia for a restoration, respondents choose it to restore natural teeth
(99%) more often than implants (76%). Almost all respondents (98%) use it for posterior
crowns, whereas approximately two-thirds (61%) use it for anterior crowns. Restoration
removal or replacement and shade matching and translucency were the top 2 cited disadvantages
of zirconia, whereas most of the respondents (57%) cited flexural strength or fracture
resistance as the biggest advantage. Fine diamonds and ceramic polishers are used
most often to polish and adjust zirconia restorations, whereas coarse diamond rotary
instruments and those made specifically for zirconia are most frequently used for
removing these restorations. Compared with metal ceramic restorations, more than 50%
of respondents experience debonding more often with zirconia restorations.


Dentists recognize the favorable fracture resistance and flexural strength properties
of zirconia, and most use similar techniques when adjusting and removing this material.
Removing these restorations and shade matching are a struggle for many.

Practical Implications

Dentists may benefit from tips on the best methods to remove, shade match, and adhesively
bond zirconia restorations.

Article Info

Publication History

Publication stage

In Press Corrected Proof


∗ This question allowed for multiple answers.

† 0.4% of respondents selected “Fracture of opposing teeth” and 0.4% selected “cost.” Percentages may not add up to 100% owing to rounding.

‡ These respondents are a subset (n = 184) who use at least some anterior zirconia restorations.

§ The remaining respondents selected “Yes, other reason.”

Copyright © 2021 American Dental Association. Unlike other portions of JADA, the print and online versions of this page may be reproduced for in-office use by dental practices and for educational purposes by dental schools without reprint permission from ADA Publishing. Any other use, copying, or distribution of this material is prohibited without prior written consent of ADA Publishing.

Disclaimer. ADA Clinical Evaluator (ACE) Panel Report content is for informational purposes only, is neither intended to nor does it establish a standard of care or the official policy or position of the American Dental Association, and is not a substitute for professional judgment, advice, diagnosis, or treatment.

This article has an accompanying online continuing education activity available at: https://ebusiness.ada.org/education/viewcourse.aspx?id=485


DOI: https://doi.org/10.1016/j.adaj.2020.10.012


© 2020 American Dental Association. All rights reserved.


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