BAR FOR FORMING OCCLUSAL SURFACES

WIPO Patent Application WO/2020/004372

A1

Provided is a bar for forming occlusal surfaces with which occlusal surfaces can be easily formed in identical shapes during the formation of an anchor tooth. This bar (10) which is for forming occlusal surfaces and used in the formation of an anchor tooth has: a shank (15) for connecting to a rotating mechanism; and a work unit (11) provided on one end of the shank (15). The work unit (11) has the shape of a rotary body rotating around the shank (15) and comprises, in order from the tip end side, a head section (11a), an inclined surface forming section (11b), and a corner forming section (11c). The head section (11a) has substantially a disk shape in which the central position of a side surface is farthest from the rotation axis. The inclined surface forming section (11b) has a tapered shape having a diameter that gradually decreases at a constant rate from the head section (11a) toward the corner forming section (11c). The corner forming section (11c) has a curved surface shape that is smoothly connected to the inclined surface forming section (11b) and has a diameter that increases toward the shank (15). Abrasive grains are attached to the surfaces of each of the inclined surface forming section (11b) and the corner forming section (11c), as well as to the surface of the heat section (11a) from the side surface central position to the shank side.

MATSUMOTO KATSUTOSHI (JP)
OBATA KENJI (JP)
MATSUMOTO SHOTA (JP)
NAMIKAWA RYOJI (JP)
AKUTSU MIKA (JP)

PCT/JP2019/025106

January 02, 2020

June 25, 2019

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MANI INC (JP)

A61C3/02; B24D7/18

JPS5734843A	1982-02-25
FR2639216A1	1990-05-25
JPS58185147A	1983-10-28
JP2012085884A	2012-05-10
JPS5631744A	1981-03-31

NISHIYAMA Takahiro (JP)

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