Conclusion: In this in vivo study, the onlay restorations of both types are acceptable for severe decayed teeth with vital pulp.Porcelain fused to metal onalys have advantage of color match.

• 结论：高嵌体是针对大面积缺损活髓牙的一种有效、安全的治疗，总体而言两种类型都可以接受，烤瓷高嵌体更具有美学优势。