Oral Biol Res 2019; 43(2): 130-135  https://doi.org/10.21851/obr.43.02.201906.130
Long-term observation of immediately-installed implants after extraction: Retrospective clinical study
Han-Chang Yu1 , Dong-Woo Kang1 , Young-Kyun Kim1 ,2,3*
1Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea 
2Department of Dentistry, School of Dentistry, Seoul National University, Seoul, Korea 
3Dental Research Institute, Seoul National University, Seoul, Korea
Correspondence to: Young-Kyun Kim, Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, 82 Gumi-ro 173beon-gil, Bundang-gu, Seongnam 13620, Korea.Tel: +82-31-787-7541, Fax: +82-31-787-4068, E-mail: kyk0505@snubh.org
Received: February 14, 2019; Revised: April 30, 2019; Accepted: May 10, 2019; Published online: June 30, 2019.
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Abstract
The aim of this study was to compare and analyze the survival rate, success rate, and loss of marginal bone of internal and external hexes and presence or absence of microthreads of implant immediately installed after tooth extraction. Forty-four implants were installed in 30 patients, average follow-up period was 80 months, and each product was divided into 3 groups. Group 1 is Osstem TS III implant, Group 2 is Osstem US II implant, and Group 3 is Implantium implant. Panoramic and periapical radiographs were used to measure the marginal bone loss. One implant was removed during the study period, and TS III had a survival rate of 100% and a success rate of 88%, US II had a survival rate of 100% and a success rate of 100%, Implantium had a survival rate of 95% and a success rate of 89%. These results suggest that Osstem and Dentium products show good clinical prognosis when implant is immediately installed after extraction, so it may be a good treatment option in the case of indications. 
Keywords: Dental implants, Survival rate, Tooth extraction


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