Ultrasonics

Question 1

What are methods for ultrasound?

Answer 1

MAGNETOSTRICTION Magnetostriction converts electromagnetic energy into mechanical energy. A stack of magnetostrictive metal strips in a handpiece is subjected to a standing and alternating magnetic field, as a result of which vibrations are produced.
A magnetostrictive device creates more of an elliptical motion, which is not ideal for either surgical or nonsurgical endodontic use and have also the disadvantage that the stack generates heat, thus requiring adequate cooling.

PIEZOELETRIC
Piezoelectricity is the process of using crystals to convert mechanical energy into electrical energy, or vice versa

Question 2

Talk of pizza? And advantages

Answer 2

Based on the piezoelectric principle, which uses a crystal
that changes dimension when an electrical charge is applied. Deformation of this crystal is converted into mechanical oscillation without heat production.
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Piezoelectric units have some advantages with respect to
earlier magnetostrictive units as they offer more cycles per second, 40 versus 24 kHz. The tips of these units work in a linear, back-and-forth, piston-like motion, which is ideal for endodontic applications.