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Ultrasonography

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...

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Hydrodynamic ultrasonic sinus floor elevation--an experimental study in sheep.

Angelo C Troedhan¹, Andreas Kurrek, Marcel Wainwright

¹Department of Maxillofacial Surgery/Oral Surgery, Center for Facial Esthetics, Vienna, Austria. troed@aon.at

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons

|March 6, 2010

Summary

Hydrodynamic ultrasound requires less pressure to elevate the sinus membrane compared to pneumatic pressure. This method shows potential for sinus floor elevation with a transcrestal approach, even at high flow rates without membrane rupture.

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Area of Science:

Oral and Maxillofacial Surgery
Biomedical Engineering
Dental Implantology

Background:

Sinus floor elevation is a common procedure in dental implantology.
Traditional methods involve pneumatic or hydraulic pressure, with varying degrees of effectiveness and risk.
Evaluating alternative methods for sinus membrane elevation is crucial for improving surgical outcomes.

Purpose of the Study:

To compare the pressure forces required for sinus membrane elevation using hydraulic versus pneumatic techniques.
To determine the relationship between applied liquid volume, activation time, and achieved sinus lift volume.
To assess the safety of hydrodynamic ultrasound in elevating the sinus membrane.

Main Methods:

190 fresh sheep heads were used for the investigation.
An ultrasound surgical device (Piezotome) was employed to evaluate pressure increase at different flow rates.
Elevation volume was measured based on varying flow rates and activation times of the ultrasound device.

Main Results:

Pneumatic sinus membrane detachment required a mean pressure of 29.54 millibars, while hydraulic technique averaged 19.8 millibars.
A flow rate of 60 mL/minute resulted in an elevated volume of 0.52 mL.
A 20-second activation time yielded an average lifted volume of 3.92 mL, increasing to 5.58 mL at maximum flow.
A significant correlation (P = .03) was found between application time and created sinus lift volume.
No sinus membrane ruptures occurred in 190 experiments, even at high flow rates (60 mL/minute) for 20 seconds.

Conclusions:

Hydrodynamic ultrasound presents a viable alternative for sinus floor elevations of various sizes and volumes.
The transcrestal approach using this method requires only a 3-mm diameter.
Further clinical investigations are recommended to validate these findings from the animal study.