Related Experiment Video
Updated: Feb 28, 2026
05:54
Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
Published on: October 18, 2021
2.3K
Implant Stability in the Posterior Maxilla: A Controlled Clinical Trial
Raquel Zita Gomes1, Mario Ramalho de Vasconcelos2, Isabel Maria Lopes Guerra1
1Department of Oral Surgery, Faculty of Dental Medicine, University of Porto, Rua Manuel Pereira da Silva, 4200-393 Porto, Portugal.
Biomed Research International
|June 20, 2017
Summary
Evaluating implant stability in the posterior maxilla is crucial. Higher primary stability (insertion torque and implant stability quotient) correlates with better outcomes in regenerated bone sites.
Area of Science:
- Dental Implantology
- Oral Surgery
- Biomaterials Science
Background:
- The posterior maxilla presents unique challenges for dental implant placement due to bone density and anatomical considerations.
- Assessing implant stability is critical for successful osseointegration and long-term implant survival.
Purpose of the Study:
- To evaluate primary and secondary stability of dental implants placed in the posterior maxilla.
- To compare implant stability in native, partially regenerated, and fully regenerated bone.
- To investigate the correlation between insertion torque, implant stability quotient, and implant success.
Main Methods:
- A prospective study involving 133 implants in 59 patients, allocated into three groups based on bone regeneration.
- Insertion torque (IT) and implant stability quotient (ISQ) measured at placement to assess primary stability (IT ≥ 45 N/cm; ISQ ≥ 60).
- ISQ measured at 15, 30, 45, and 60 days post-placement to evaluate secondary stability evolution.
Main Results:
- Fifty-two out of 133 implants achieved satisfactory high primary stability.
- A positive correlation was observed between IT, ISQ at placement (t=0), and ISQ at 60 days.
- Implants with high primary stability showed statistically higher IT and ISQ values; no ISQ drops observed during healing.
Conclusions:
- Evaluating primary and secondary implant stability is vital for enhancing survival rates in critical areas like the regenerated posterior maxilla.
- Achieving high primary stability may be a key factor for successful implant integration in challenging bone conditions.
- This study provides insights into implant stability dynamics in augmented posterior maxillary sites.
