Disclosed is a trephine drill for an implant. The trephine drill for the implant includes: a perforating body which comprises a first end part provided with a cutter for perforating the alveolar bone and a second end part formed with a through hole and a rod body which couples with the perforating body to move close to and apart from the first end part of the perforating body toward the through hole of the perforating body and adjusts a perforation depth when perforating the alveolar bone. With this, not only an alveolar bone is precisely perforated at a preset depth, but also an alveolar bone piece, generated when perforating the alveolar bone, is easily removed from inside of a perforating body.本發明揭露一種用於植牙之環鋸狀鑽孔工具。用於植牙之該環鋸狀鑽孔工具包括:一穿孔本體,其包含一第一端部和一第二端部,該第一端部提供有用於對齒槽骨穿孔之一切削刀,該第二端部形成有一貫穿孔;以及一桿體,其與該穿孔本體相耦合,以朝該穿孔本體之該貫穿孔靠近及遠離該穿孔本體之該第一端部移動,並在對該齒槽骨穿孔時調整一穿孔深度。藉此,不僅可以一預設深度對一齒槽骨精確地穿孔,且亦可容易地自一穿孔本體內部移除當對該齒槽骨穿孔時所產生之一齒槽骨碎片。1‧‧‧環鋸狀鑽孔工具10‧‧‧穿孔本體11‧‧‧切削刀17‧‧‧容納部19‧‧‧排出孔30‧‧‧桿體31‧‧‧外螺紋部33‧‧‧平坦部35‧‧‧連接凹槽50‧‧‧扣緊單元52‧‧‧外螺紋54‧‧‧六角插口
