What question did this study set out to answer?

This research aims to evaluate how crown height and retentive height of abutments affect the fracture resistance of zirconia implant crowns.

April 22, 2026Clinical Oral Implants Research0 citationsOpen Access

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The Effect of Crown Height and Retentive Height of Abutment on the Fracture Resistance of Fatigued Monolithic Zirconia Anterior Implant Crowns—An In Vitro Study

EZEsha ZahidThe University of Melbourne JAJaafar AbduoThe University of Melbourne AGAttila GergelyThe University of Melbourne

Key Points

This research aims to evaluate how crown height and retentive height of abutments affect the fracture resistance of zirconia implant crowns.
In vitro testing of zirconia anterior implant crowns under controlled load conditions.
Comparison of various crown and retentive heights on mechanical performance.
Shorter crowns exhibited greater load at failure and better survival rates.
Retentive height had minimal impact but worked better with shorter crowns, enhancing mechanical performance.

Abstract

Crown height significantly influenced load at failure and survival, with shorter crowns performing better. The retentive height of the Ti-base abutment had less impact; however, shorter abutments provided better mechanical performance when paired with shorter crowns, suggesting careful consideration for anterior restorations.

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View Full Paper

The Effect of Crown Height and Retentive Height of Abutment on the Fracture Resistance of Fatigued Monolithic Zirconia Anterior Implant Crowns—An In Vitro Study

Key Points

Abstract

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