Q: What is ultrasonic?
A: Ultrasonic is the branch of science concerned with sound vibrations or waves of a frequency above 20,000 cycles per second, the upper audible range of the human ear.
Q: Why is piezoelectric generation superior to magnetostrictive generation?
A: Several systems can be used to generate ultrasonic vibrations. The most important methods presently employed are the magnetostrictive and the piezoelectric.
James Prescott Joule in 1846, and later, more extensively, George Washington Pierce, investigated the phenomenon of ferromagnetic bar expanding when weakly magnetized, and contracting when magnetic saturation is reached. Such mechanical dimensional changes due to changes in a magnetic field are called magnetostrictive effects.
NOTE: Conventional ultrasonic scaler units such as Cavitron (known almost synonymously as ultrasonic scalers) belong to this group. This type of scaler tips usually come with a rod made of nickel or nickel alloy which is inserted into the hand piece sheath.
The piezoelectric or pressure-electric phenomenon was first discovered and studied by Pierre Curie as early as 1880. Asymmetrical crystals such as Rochelle salt and quartz generate an electric charge on their surfaces when mechanical stresses are applied. When pressure is applied to such a crystal, the crystal's faces become electrically charged – one positive, the other negative. When tension is applied, these electrical charges are reversed. Thus, mechanical vibration is transformed into electrical oscillations. Quartz crystal piezoelectricity has been well developed in Japan and used extensively in many commercial fields. The vibration pattern of piezoelectric unit has a very useful linear nature.
NOTE: Osada developed ENAC a quartz crystal piezoelectric ultrasonic system, multi-purpose instrument that can be used in various applications in the dental field. Utilizing the wonderful nature of piezoelectric system, ENAC has been used extensively as an efficient assistant in practice of endodontics and periodontics, as well as a scaler, effective yet gentle enough for children. Osada has followed users’ demands and made more and more tips including the surgical tips. Osada, Inc. in U.S.A., representing Osada Electric Co., Ltd. Tokyo, received the FDA approval 510K for the Enac Piezoelectric Ultrasonic System in 1985: K844250.
Q: Why choose Osada's ENAC for ultrasonic piezoelectric systems?
A: NOT ALL ULTRASONIC SYSTEMS ARE CREATED EQUAL, even between piezoelectric systems of similar frequency.
ENAC is very simple to use because it is automatically tuned. All you need is to set the power most suitable for the tip used and activate with the foot switch. Water volume is easily adjustable.
An ultrasonic unit must be in tune, just as in music. Although ultrasonic vibration cannot be heard, it must be in tune to be able to work harmoniously in the surgical fields which require precise operation. Temperature increase in Enac hand piece during operation is minimal even at the power setting of 12 (highest). The temperature increase at the tip generated by friction in the surgical site, can be cooled with a small amount of water. Enac is ready to assist you, whenever you need.
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