Schedule 0 [EP-9] Usefulness of intraoral scanners for abutment cavities- Effect of depth of field and post geometry - *Mamoru Yotsuya1, Takahiro Kawasaki1, Shota Kuroda1, Motoya Fujiseki2, Kazuhiro Umehara1, Hideshi Sekine1 (1. Tokyo Dental College Department of Fixed Prosthodontics, 2. Tokyo)