A multicenter prospective study in type IV bone of a single type of implant.
OBJECTIVE
To analyze the success and survival rates of the Osstem GSII (Osstem, Busan, Korea) implant in type IV bone.


METHODS
A prospective, multicenter (5 centers) study was conducted by examining the relationship between implant success and survival rates, and several patient and surgical parameters. The implants were placed in 82 patients who visited several nationwide dental hospitals and clinics between 2007 and 2008, followed by clinical and radiographic analyses.


RESULTS
In type IV bone, the implant success and survival rates were 93.23% and 95.83%, respectively. The maxillary premolar and mandibular anterior tooth areas showed success rates of 100%. The most widely used implant diameter and length was 5.0 and 13 mm, respectively, but the diameter and length had no effect on success rates. However, success rates appeared to decrease with age.


CONCLUSIONS
The results indicated that the Osstem GSII implant is highly effective in poor-quality type IV bone.
Department of Dental Hygiene, Kangwon National University, Samcheok, South Korea.
Mi-Ae
MA
Jeong
Su-Gwan
SG
Kim
Young-Kyun
YK
Kim
Hee-Kyun
HK
Oh
Yong-Seok
YS
Cho
Woo-Cheol
WC
Kim
Ji-Su
JS
Oh
D000328:Adult; D000367:Age Factors; D000368:Aged; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D000540:Alveolar Ridge Augmentation / Q000379:methods; D015519:Bone Density / Q000502:physiology*; D016025:Bone Transplantation / Q000379:methods; D002908:Chronic Disease; D003724:Dental Arch / Q000601:surgery; D003758:Dental Implantation, Endosseous / Q000379:methods*; D019250:Dental Implants, Single-Tooth; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D019094:Dental Prosthesis, Implant-Supported; D005260:Female; D005500:Follow-Up Studies; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D011446:Prospective Studies; D016300:Radiography, Bitewing; D012086:Reoperation; D012907:Smoking; D016019:Survival Analysis; D016896:Treatment Outcome; D055815:Young Adult