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Long‐term retrospective study of narrow implants for fixed dental prostheses
Author(s) -
Lee JungSeok,
Kim HyunMin,
Kim ChangSung,
Choi SeongHo,
Chai JungKiu,
Jung UiWon
Publication year - 2013
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/j.1600-0501.2012.02472.x
Subject(s) - medicine , retrospective cohort study , dentistry , maxilla , implant , survival rate , dental prosthesis , survival analysis , life table , surgery , population , environmental health
Objective The objectives of this study were to analyze retrospectively the long‐term survival and success rates of Narrow implants ( NI s) placed with various implant systems, and the association with biological and technical complications. Material and methods In total, 338 patients (men = 45.6%, women = 54.4%) who received 541 NI s (≤3.5 mm in diameter) for fixed prostheses were enrolled in this retrospective study. The mean marginal bone level ( MMBL ) change was calculated. Life table analysis with the cumulative survival rate and success rate was calculated, and biological and technical complications were evaluated. Results The annual MMBL change was 0.07 ± 0.20 mm. The 12‐year cumulative survival (success) rates of NI s were 98.1% (91.8%) and 98.5% (93.8%) for the implant‐ and subject‐based analysis, respectively. During the observation period up to 12 years (mean 4.9 years), six implants were lost in the maxilla, whereas three implants were lost in the mandible. Technical complications were more frequent than biological complications. Infection was the most common underlying cause of biological complications and the most frequent technical complication was decementation. Conclusion In conclusion, the findings of this study suggest that NI s could be used safely for narrow alveolar ridges or narrow mesiodistal spaces on the basis of their high survival rate.