[Clinical evaluation of the zirconia all ceramic crowns in 40 consecutive patients].
OBJECTIVE
To investigate clinical application, aesthetics, stability and bio-compatibility of zirconia all-ceramic crowns in prosthodontic patients.


METHODS
Computer aided design and manufacturing techniques were used to make zirconia all ceramic crowns in 40 patients. They were divided into 2 groups according to the thickness of the gingival thickness. After 12 months of clinical observation, the aesthetics, stability, and bio-compatibility were evaluated by the crown color, crown edge fitness, losing ratio and gingival health. The data were analyzed using SPSS 13.0 software package.


RESULTS
Slight marginal discrepancy was observed in 2 zirconia all ceramic crowns, no evidence of decay was observed at 1 year.


CONCLUSIONS
Zirconia all ceramic crowns have a low fracture rate, good biological properties and excellent esthetic properties. It is ideal esthetic prosthesis.
Shanghai Jinan Dental Clinic. Shanghai 200041, China. E-mail:qijunhao18@163.com.
Bing
B
Qi
Yan
Y
He
D017076:Computer-Aided Design; D003442:Crowns; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D006801:Humans; D015040:Zirconium
D003776:Dental Porcelain; D015040:Zirconium; C028541:zirconium oxide