US 6,981,873 B2
Dental implant and head for a compaction drill
Young-Wook Choi, 106-1101 Sindonga Apt., 22, Nonhyeon-dong, Gangnam-gu, Seoul 135-010 (Korea, Republic of); Yong-Chang Choi, 23-907 Misung Apt., 408, Apgujeong-dong, Gangnam-gu, Seoul 135-110 (Korea, Republic of); Shin-Koo Kim, 103-706 Hansin Apt., 609-1, Donam-dong, Seongbuk-gu, Seoul 136-060 (Korea, Republic of); Han-Gu Kim, 534-301 Samsung, Hwajeong-dong, Deokyang-gu, Goyang-si, Gyeonggi-do 412-270 (Korea, Republic of); and Jai-Hyun Lee, 228-506 Mokdong Sinsigaji, Mok-dong, Yangcheon-gu, Seoul 158-050 (Korea, Republic of)
Appl. No. 10/432,627
PCT Filed Nov. 14, 2001, PCT No. PCT/KR01/01936
§ 371(c)(1), (2), (4) Date Jun. 06, 2003,
PCT Pub. No. WO02/45615, PCT Pub. Date Jun. 13, 2002.
Claims priority of application No. 10-2000-0074878 (KR), filed on Dec. 09, 2000.
Prior Publication US 2004/0219488 A1, Nov. 04, 2004
Int. Cl. A61C 8/00 (2006.01)
U.S. Cl. 433—173 16 Claims
OG exemplary drawing
 
1. A dental implant comprising:
an upper abutment portion to which an artificial crown in fixed;
a lower fixture portion for securing said implant in a jawbone; and
a settling portion formed between said abutment portion and said fixture portion,
wherein a bone tissue is bonded to said settling portion and a diameter of said settling portion is gradually reduced from said upper abutment portion in a downward direction,
wherein said upper abutment portion, said lower fixture portion and said settling portion are formed unitarily and in one piece,
wherein a crown cap for fixing said artificial crown is mounted on said abutment portion,
wherein a surface of said abutment portion is machined and surfaces of said settling and said fixture portions are treated by a blasting method,
wherein said abutment portion further comprises:
an upper portion to which said artificial crown is fixed;
a chamfer for forming edge portions of said implant; and
a curved shoulder for maintaining closure of a junction epithelium and a connective tissue in the mouth,
wherein a plurality of minute screwed grooves are formed on a surface of said settling portion.