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Implants in the posterior maxilla: a comparative clinical and radiologic study
Luca R Rodoni1, Roland Glauser, Andreas Feloutzis
1Clinic for Fixed and Removable Prosthodontics & Dental Material Science, University of Zurich, Switzerland.
The International Journal of Oral & Maxillofacial Implants
|April 21, 2005
Summary
This study found that sinus lift by lateral antrostomy, osteotome technique, and standard implantation offer similar clinical and radiographic outcomes for posterior maxilla implants. These sinus floor augmentation methods provide stable bone levels for prosthetic restorations.
Area of Science:
- Dental Implantology
- Oral Surgery
- Periodontology
Background:
- Sinus floor augmentation is crucial for posterior maxilla implant placement.
- Various techniques exist, including sinus lift by lateral antrostomy (SL) and osteotome technique (OT).
- Evaluating long-term outcomes of these augmentation methods is essential for predictable prosthetic rehabilitation.
Purpose of the Study:
- To compare the clinical and radiographic outcomes of implants placed using three different sinus floor augmentation procedures.
- To assess the stability of bone levels and probing pocket depths around implants subjected to different augmentation techniques.
Main Methods:
- A comparative study involving 48 patients who received screw-type implants in the posterior maxilla.
- Three surgical procedures were analyzed: sinus lift by lateral antrostomy (SL), osteotome technique (OT), and standard implantation (control).
- Clinical (probing pocket depth) and radiographic (marginal bone level) assessments were performed at a mean follow-up of 4.6 years.
Main Results:
- Mean probing pocket depth was comparable across all groups (SL: 3.0 mm, OT: 3.1 mm, Control: 3.1 mm).
- Mean radiographic bone levels showed no statistically significant differences between the SL (1.53 mm), OT (2.40 mm), and control (1.96 mm) groups.
- No statistically significant differences were observed for either clinical or radiographic parameters between the tested groups.
Conclusions:
- All three surgical procedures (SL, OT, standard implantation) demonstrated similar long-term clinical and radiographic stability.
- The evaluated sinus floor augmentation methods provide comparable biomechanical conditions for successful prosthetic restorations.
- These findings support the use of SL and OT as viable alternatives to standard implantation when bone height is insufficient in the posterior maxilla.