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KMID : 0602720110150020170
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Implantology
2011 Volume.15 No. 2 p.170 ~ p.179
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Analysis of Prognostic Factors after a Variety of Osstem® Implant Installation
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Moon Sang-Woon
Kim Young-Kyun
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Abstract
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Purpose: The purpose of this study was to evaluate the prognostic factors after a variety of Osstem® implant installation.
Materials and Methods: An information of patients who got a implant therapy using Osstem® Implant Systems (US, SS, GS systems) at Seoul National university Bundang Hospital from Jan 2007 to Dec 2008 was recorded and we have followed them to check the status of implants until May 2011. The clinical dental records included the information of patients (gender, age, with or without smoking and the systemic diseases), implants (types, installation places, lengths, and diameters), operation (surgery stages, with or without bone graft, membrane, and immediate or delayed installation), and postoperative findings (types of supra prosthesis, post operative complications, healing period before loading, amount of crestal bone resorption, and success or fail). We have done our survey with the clinical and radiolographical examinations. The survival rate of the implants were evaluated.
Results: 1,091 implants (425 GSII, 258 USII, 255 SSII, 82 USIII, 60 GSIII, and 11 SSIII) were installed to 310 patients (158 male and 152 female) at this study. And the average age was 53 years old (ranging from 17 to 95). 554 implants were installed on maxilla and 537 implants on mandible. The length and diameter of implants were varied (length: 6~18 mm, diameter: 3.25~5 mm). Most cases were 2 stage surgery (72.6%), and bone grafts were carried 606 implants (55.5%) out. Among them, membranes were used for 489 implants (80.7%). The follow-up period was 18.4 months (1~49 months) on average. 33 implants (5.3%) were failed among the 619 implants excepted 472 implants because of insufficient information. The average crestal bone loss was 0.66 mm after prosthodontic loading.
Conclusion: We obtained the favorable clinical results of Osstem® Implant Systems (94.7% survival rate) over 1 to 4 years observation. Only post-operative complications and the timing of implant installation were the critical factors impact on the survival rate of implants among many kinds of factors.
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KEYWORD
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implant, prognosis
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