Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 May;32(3):392-400.
doi: 10.1111/ipd.12918. Epub 2021 Nov 16.

Three-dimensional evaluation of tooth preparation forms in paediatric zirconia crowns: An in vitro study

Yong Kwon Chae  1   2 , Hyeonjong Lee  3 , Hong-Keun Hyun  4 , Hyo-Seol Lee  2 , Sung Chul Choi  2 , Ok Hyung Nam  2
Affiliations

Three-dimensional evaluation of tooth preparation forms in paediatric zirconia crowns: An in vitro study

Yong Kwon Chae et al. Int J Paediatr Dent. 2022 May.

Abstract

Background: Though prefabricated zirconia crowns (PZCs) differ from stainless steel crowns and have different preparation guidelines for optimal crown adaptation, little is known about how clinicians prepare teeth for PZCs.

Aim: To investigate the prepared tooth forms for PZCs and identify the shared patterns of tooth preparation.

Design: Twenty participants prepared primary maxillary first molars and mandibular second molars for PZCs. A model with ideally prepared tooth was digitally generated as a reference. The prepared teeth were digitally scanned and superimposed on the reference. Three-dimensional analysis software was used to evaluate the discrepancy between ideal and prepared surface for overall surface and subdivided area.

Results: Half of the surfaces received excessive reduction, and 24% showed error within 0.2 mm (p < .001) in maxilla. 41.6% of surfaces showed error within 0.2 mm, and 20% were excessively prepared (p = .002) in mandible. The highest discrepancies were found at the mesiopalatal line angles (maxillary) and at the distobuccal line angles (mandibular). Significant discrepancies were observed on the occlusal surfaces, especially at the cusps.

Conclusions: Tooth preparations for PZCs showed wide variations related to depth among the participants.

Keywords: dental practice patterns; prefabricated zirconia crown; primary teeth; tooth preparation.

PubMed Disclaimer

References

REFERENCES

    1. Holsinger DM, Wells MH, Scarbecz M, Donaldson M. Clinical evaluation and parental satisfaction with pediatric zirconia anterior crowns. Pediatr Dent. 2016;38(3):192-197.
    1. Donly KJ, Méndez MJC, Contreras CI, Liu JA. Prospective randomized clinical trial of primary molar crowns: 36-month results. Am J Dent. 2020;33(3):165-168.
    1. Seminario AL, Garcia M, Spiekerman C, Rajanbabu P, Donly KJ, Harbert P. Survival of zirconia crowns in primary maxillary incisors at 12-, 24- and 36-month follow-up. Pediatr Dent. 2019;41(5):385-390.
    1. Salami A, Walia T, Bashiri R. Comparison of parental satisfaction with three tooth-colored full-coronal restorations in primary maxillary incisors. J Clin Pediatr Dent. 2015;39(5):423-428.
    1. Miyazaki T, Nakamura T, Matsumura H, Ban S, Kobayashi T. Current status of zirconia restoration. J Prosthodont Res. 2013;57(4):236-261.

LinkOut - more resources