1. Good hardness, strength and retention effect: compared with composite resin restoration, inlay restoration has better hardness, strength and retention effect.
2. Less tooth preparation: compared with baked (all) porcelain tooth restoration, the amount of tooth preparation for inlay restoration is less, which can keep the integrity of tooth shape and reduce the stimulation to pulp and periodontium.
3. Wide range of application: inlay restoration is suitable for the case of a small area of missing teeth, including caries and other living pulp teeth.