Evaluation of Single‐Tooth Implants in the Second Molar Region: A 5‐Year Life‐Table Analysis of a Retrospective Study

Background: To our knowledge, no study has evaluated the success or survival rate of single‐tooth implants that replaced missing maxillary and mandibular second molars. The purpose of the present study was to evaluate the 1‐ to 5‐year cumulative survival rate (CSR) for single‐tooth implants placed i...

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Bibliographic Details
Published in:Journal of periodontology (1970) 2010-09, Vol.81 (9), p.1242-1249
Main Authors: Koo, Ki‐Tae, Wikesjö, Ulf M.E., Park, Jang‐Yeol, Kim, Tae‐Il, Seol, Yang‐Jo, Ku, Young, Rhyu, In‐Chul, Chung, Chong‐Pyoung, Lee, Yong‐Moo
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Biological and medical sciences
Dental Implantation, Endosseous - methods
Dental Implants, Single-Tooth
Dental Prosthesis Design
Dental Restoration Failure
Dentistry
Female
Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics
Humans
Life Tables
Male
Maxillofacial surgery. Dental surgery. Orthodontics
Medical sciences
Middle Aged
Molar
Otorhinolaryngology. Stomatology
Retrospective Studies
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
survival rate
Treatment Outcome
Young Adult
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Summary:Background: To our knowledge, no study has evaluated the success or survival rate of single‐tooth implants that replaced missing maxillary and mandibular second molars. The purpose of the present study was to evaluate the 1‐ to 5‐year cumulative survival rate (CSR) for single‐tooth implants placed in the second molar region and the effects of associated factors. Methods: Four hundred eighty‐nine patients (298 males and 191 females; age range: 23 to 91 years; mean age: 47 years) who were admitted to the Seoul National University Dental Hospital between March 2003 and July 2008 and treated with single‐tooth implants in the second molar region (227 maxillary implants and 294 mandibular implants; total: 521 implants) were included in the study. Thirty‐two subjects received two implants each. A 1‐ to 5‐year CSR was calculated using a life‐table analysis. A comparison of CSRs between maxillary versus mandibular implants, one‐stage versus two‐stage implants, short (≤8.5 mm) versus long (>10 mm) implants, and standard‐diameter (≤4.0 mm) versus wide‐diameter (≥5.0 mm) implants was performed using Wilcoxon (Gehan) statistics. P
ISSN:0022-3492
1943-3670
DOI:10.1902/jop.2010.100064