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An Atraumatic Approach to Internal Sinus Lifting: The Motorized Expansion Drill Technique
Michael K Sonick1, Debby Hwang2, Rui Ma1
1Private Practice, Fairfield, Connecticut.
Compendium of Continuing Education in Dentistry (Jamesburg, N.J. : 1995)
|June 20, 2020
Summary
This study introduces a novel technique for maxillary sinus elevation using motorized expander burs, avoiding traditional osteotome methods. This approach successfully augmented bone height for dental implants, enhancing surgical control and patient outcomes.
Area of Science:
- Oral and Maxillofacial Surgery
- Implant Dentistry
- Periodontology
Background:
- Maxillary sinus floor elevation is a common procedure for dental implant placement in atrophic posterior maxillae.
- Traditional techniques often involve osteotomes and malleting, which can be technically demanding and increase the risk of membrane perforation.
- Minimally invasive approaches are sought to improve predictability and patient comfort.
Purpose of the Study:
- To evaluate the efficacy and safety of using sequential motorized expander burs for internal maxillary sinus elevation.
- To assess the vertical bone augmentation achieved and the primary stability of subsequently placed dental implants.
- To compare the outcomes with traditional osteotome techniques, focusing on surgical control and patient experience.
Main Methods:
- A case series of 34 patients received internal maxillary sinus elevation and 37 posterior dental implants.
- Sequential motorized expander burs were used exclusively to create a space for bone graft material (allograft or xenograft) and elevate the sinus floor.
- Manual osteotome and malleting were intentionally avoided. Implant stability was assessed by insertion torque values (≥90 Ncm).
Main Results:
- A mean vertical bone augmentation of 3.92 mm was achieved in ridges with an average residual height of 7.52 mm.
- All 37 implants achieved high insertion torque values (≥90 Ncm) and primary stability.
- No intraoperative or postoperative complications were reported. The type of bone graft material did not appear to influence the outcome.
Conclusions:
- Internal maxillary sinus elevation using sequential motorized expander burs is a viable and effective alternative to traditional methods.
- This technique offers improved surgical control, avoids osteotome-related risks, and leads to successful dental implant outcomes.
- Further research could explore long-term results and compare graft materials more rigorously.
