Dental Hygiene - Dent 1040 Chapter 39 Nonsurgical Periodontal Instrumentation
The piezoelectric ultrasonic scaler uses electrical energy applied to piezoelectric crystals, causing linear vibrations, while the magnetostrictive scaler uses metal stacks and produces elliptical tip movement. Piezoelectric units generate less heat and typically operate at 25,000–50,000 cycles per second (cps), compared to 18,000–45,000 cps for magnetostrictive units.
Piezoelectric model compared to magnetostrictive
Alternating electrical energy applied to piezoelectric crystals instead of metal stack; less heat production than magno; 25-50K cps vs 18-45K cps
Key Terms
Piezoelectric model compared to magnetostrictive
Alternating electrical energy applied to piezoelectric crystals instead of metal stack; less heat production than magno; 25-50K cps vs 18-45K cps
Older/Newer/Ferro
Older units operate at 25K cps;
Newer units operate at 30K cps;
Ferromagnetic (ferric rod that generates less heat than conventional metal st...
Frequency and Heat
the higher the frequency applied, the faster the vibrations and the higher the heat production; Magneto has most heat, next is Piezo and Sonic has ...
Vibration patterns
Magnetostrictive: Elliptical pattern
Piezoelectric: Single plane pattern
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| Term | Definition |
|---|---|
Piezoelectric model compared to magnetostrictive | Alternating electrical energy applied to piezoelectric crystals instead of metal stack; less heat production than magno; 25-50K cps vs 18-45K cps |
Older/Newer/Ferro | Older units operate at 25K cps; |
Frequency and Heat | the higher the frequency applied, the faster the vibrations and the higher the heat production; Magneto has most heat, next is Piezo and Sonic has none |
Vibration patterns | Magnetostrictive: Elliptical pattern |