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| Three-year follow-up study of survival rates of IPS e．max Press all-ceramic crowns and three-unit fixed partial dentures |
| LI Ning1，LIU Bing1，and ZHONG Ming2 |
1. Department of Stomatology, Hospital 202, Shenyang 110005, China;
2.Hospital of Stomatology, China Medical University, Shenyang 110003, China |
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Abstract Objective To evaluate the survival rate of IPS e．max Press all-ceramic crowns and three-unit fixed partial dentures (FPDs) followed up for three years． Methods Forty-five patients with dental defects or single tooth loss were included in this study. A total of 46 crowns were placed in molar or premolar areas. 21 all- ceramic FPDs were placed in anterior and premolar areas. Follow-up examinations took place 6, 12, 24, and 36 months after the placement． Results One crown and six FPD fractures were observed during the evaluation. The survival rate was 97.8% for crowns and 71.4% for FPDs .Framework fractures were recorded in FPD where the connector dimensions did not meet the manufacture's specifications. Conclusions Within the observation period of three years, IPS e．max Press crowns exhibit satisfactory performance． Indications should be taken into serious consideration before the use of three-unit fixed partial dentures made from IPS e．max Press.
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Received: 06 February 2012
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