1. Adult patients: usually suitable for adults aged 18 and above, especially those aged 20~55 with stable oral environment.
2. Small number of missing teeth: most suitable for restoring 1~2 missing teeth, or a small number of teeth missing at intervals.
3. Oral health: The shape of the abutment teeth is normal, oral and general health condition is good, can tolerate dental preparation and maintain oral hygiene.
4. Those with specific needs: patients who have higher requirements for dental restoration due to occupational or aesthetic needs.