Objective:To observe the clinical outcome of IPS e. max Press all-ceramic crown,gold alloy porcelain fused metal (PFM) crown and Ni-Cr alloy PFM crown restorations. Methods:Three groups of patients were treated with IPS e. max Press all-ceramic crown,gold alloy PFM crown or Ni-Cr alloy PFM crown restorations separately. The crown restorations were evaluated with the USPHS criteria for color match,marginal discoloration,secondary caries,marginal adaptation and gingival health immediately and after a period of 12 months. Results:The clinical outcome of both IPS e. max Press all-ceramic crown and gold alloy PFM crown restorations was better than Ni-Cr alloy PFM crown restorations for color match and gingival health. There was statistically significant difference in 3 groups for marginal discoloration and marginal adaptation,in which IPS e. max Press all-ceramic crown restoration was the best and gold alloy PFM crown restoration was better than Ni-Cr alloy PFM. No secondary caries was detected. Conclusion:IPS e. max Press crown restoration exhibits excellent clinical outcome over a period of 12 months,and gold alloy PFM crown restoration is better than Ni-Cr alloy PFM.