Int J Stomatol

Int J Stomatol ›› 2023, Vol. 50 ›› Issue (4): 485-490.doi: 10.7518/gjkq.2023067

• Reviews • Previous Articles     Next Articles

Research progress on preparation forms for the margin of monolithic zirconia crowns in posterior teeth

Wang Xiao-chen(),Wang Jian.()   

  1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2022-11-11 Revised:2023-03-25 Online:2023-07-01 Published:2023-06-21
  • Contact: Jian. Wang E-mail:15645470267@163.com;ferowang@hotmail.com

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Abstract:

Zirconia is the most widely used high-strength ceramic material in recent years. Monolithic crowns made from second-generation zirconia have the advantage of being aesthetic and solid enough to withstand the masticatory pressure of posterior teeth even at a thickness of 0.5 mm. These crowns are therefore widely used in posterior full crown restoration. The margin of the crowns can be prepared using knife edge, chamfer edge, and shoulder edge. The margin preparation differs from that of glass-ceramic crowns due to the high mechanical properties of monolithic zirconia crowns, but a standard preparation procedure is not yet available. This review aims to summarize the margin preparation forms for posterior monolithic zirconia crowns and discuss the stress distribution, mechanical properties, marginal adaptation and effects on the abutment and periodontal tissues of different margin preparation forms. Results provide a clinical practice re-ference for the margin preparation of posterior monolithic zirconia crowns.

Key words: monolithic zirconia crown, margin, round shoulder, chamfer edge

CLC Number: 

  • R 783.3

TrendMD: 

Fig 1

Different gingival edge preparation forms of full zirconium crown in posterior teeth"

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