COUPLING STRUCTURE OF ABUTMENT AND CROWN FOR IMPLANT

WIPO Patent Application WO/2020/105813

A1

The present invention relates to a coupling structure of an abutment and a crown for an implant, in which the abutment is screwed to an upper portion of a fixture fixed to an alveolar bone, and a lower portion of the crown is coupled to an upper portion of the abutment. An insertion part is formed at an upper portion of the abutment, the crown is provided thereinside with an insertion groove into which the insertion part is inserted, and a connection part, having the outer periphery and the upper surface coupled to the inner periphery and the bottom surface of the insertion groove between the abutment and the crown, has an accommodation portion having a shape corresponding to the shape of the insertion part formed thereinside, wherein the connection part has a structure which thermally expands above a predetermined temperature such that the inner periphery of the accommodation portion presses the outer periphery of the insertion part, and thermally contracts below the predetermined temperature such that the pressure on the inner periphery of the insertion part by the inner periphery of the accommodation portion is released. Due to these features, the crown can be easily removed and coupled again without breakage, such that costs and working time can be reduced.

KWON YONG CHAN (KR)
KIM KYOUNG MIN (KR)
CHO YONG MOON (KR)

PCT/KR2019/004085

May 28, 2020

April 05, 2019

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YESBIO GOLD CO LTD (KR)

A61C8/00; A61C13/225; G06K19/07

KR100799368B1	2008-01-30
KR101236095B1	2013-02-21
KR20100011847A	2010-02-03
KR101514723B1	2015-04-23
JP3165873U	2011-02-10
KR101943871B1	2019-01-30

MYUNG IP & LAW FIRM (KR)

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