Gc Corporation

Ryosuke Ikeya

Masashi Takahashi

Shinichiro Hanada

Joseph F Saade

Nassib Fares

Yoshihiro Sakaguchi

Fumiya Sato

Naoto Fujii

Takamitsu Takagi

Yusuke Noguchi

Tsuyoshi Noguchi

For proper fitness of a core portion of an abutment to a patient, a wax model base for an abutment of a dental implant includes an engagement portionengaging with an implant fixture analog embedded in a gypsum model without rotation, a truncated conical portion, a building portionprovided directly on an inner peripheral edge of a ring-like first stepped portion, which is provided on an oral cavity inner side of the truncated conical portion, or through a cylindrical portionhaving a low height to have a conical shape expanding toward the oral cavity inner side and have a cutoff portionon an outer peripheral surface, a cylindrical portionprovided on an inner peripheral edge of a ring-like second stepped portionprovided on the building portion, and a screw holealong a center axis of the base.

Wax model base for abutment of dental implant

For accurate holding, easy attachment and detachment, and sufficient rotation force, a rotary tool has a holding and transmitting partto hold a hexagonal column of a rotated body and give rotation force, comprising a recessed part, which has an inner face having an approximately regular triangle cross sectional shape, run-off partsat corners of the triangle shape, and a uniform shape in depth direction, and plate springs, which are fixed at a bottom of the recessed partand have pawl partsat tips thereof positioned at the opening side of the recessed part, and the pawl partscan be moved into the run-off partswhile contacting to three side faces of the hexagonal column H and generate spring force, when the hexagonal column H is inserted into the recessed part

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Tokyo, Japan

Ryosuke Ikeya