| Autor: |
French, David, Nadji, Nabil, Liu, Shawn X., Larjava, Hannu |
| Předmět: |
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| Zdroj: |
Quintessence International; Jun2015, Vol. 46 Issue 6, p523-530, 8p, 1 Black and White Photograph, 4 Diagrams, 7 Charts, 3 Graphs |
| Abstrakt: |
Objective: A novel osteotome trifactorial classification system is proposed for transcrestal osteotome-mediated sinus floor elevation (OSFE) sites that includes residual bone height (RBH), sinus floor anatomy (contour), and multiple versus single sites OSFE (tenting). Method and Materials: An analysis of RBH, contour, and tenting was retrospectively applied to a cohort of 926 implants placed using OSFE without added bone graft and followed up to 10 years. RBH was divided into three groups: high (RBH > 6 mm), mid (RBH = 4.1 to 6 mm), and low (RBH = 2 to 4 mm). The sinus “contour” was divided into four groups: flat, concave, angle, and septa. For “tenting”, single versus multiple adjacent OSFE sites were compared. Results: The prevalence of flat sinus floors increased as RBH decreased. RBH was a significant predictor of failure with rates as follows: low- RBH = 5.1%, mid-RBH = 1.5%, and high-RBH = 0.4%. Flat sinus floors and single sites as compared to multiple sites had higher observed failure rates but neither achieved statistical significance; however, the power of the study was limited by low numbers of failures. Conclusion: The osteotome trifactorial classification system as proposed can assist planning OSFE cases and may allow better comparison of future OSFE studies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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