J Dent Rehabil Appl Sci.  2022 Jun;38(2):81-89. 10.14368/jdras.2022.38.2.81.

Comparison vibration characteristics of several wireless endodontic handpieces

• Lee BK
• Lee Y
• Park SH
• Cho KM
• Kim JW

• KMID: 2535015
• DOI: http://doi.org/10.14368/jdras.2022.38.2.81

Abstract

Purpose
Wireless endodontic handpieces (WEH) are widely used in dental clinics due to their convenience and portability. This study aimed to compare the vibration magnitudes and patterns generated by five WEH.
Materials and Methods
Vibration acceleration of five WEH (X-Smart IQ, E connect S, Endo A Class, ENDOIT, and TRAUS ENDO) in the rotary and reciprocating motion was measured with accelerometer The average vibration acceleration was analyzed using the t-test, Welch’s ANOVA test, and Dunnett T3 test at P < 0.05.
Results
In all WEH, the average vibration acceleration in reciprocating motion was significantly higher than that in rotary motion (P < 0.001). In rotary motion, repeated vibration graphs of constant amplitude were obtained without sudden changes in the magnitude of vibration, and the average vibration acceleration value was high in the order of X Smart IQ, Endo A Class, ENDOIT, E Connect S, and TRAUS ENDO (P < 0.001), there was no statistically significant difference between X Smart IQ and Endo A Class. In reciprocating motion, a vibration graph was obtained in which large amplitude peaks appear at specific points within one cycle are repeated. The average vibration acceleration value was highest in the order of X Smart IQ, E Connect S, Endo A class, ENDOIT, and TRAUS ENDO (P < 0.001).
Conclusion
Regardless of the type of WEH, greater vibration occurred in the reciprocating motion than in the rotary motion (P < 0.001). In the reciprocating motion, there was a difference in vibration for all handpieces (P < 0.001)

Keyword

accelerometer; vibration; wireless endodontic handpieces

Figure

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  Fig. 1 Cordless Endodontic Handpieces. From left to right, X Smart IQ (Dentsply sirona, USA), E Connect S (Eighteeth, China), Endo A Class (Saeyang, Korea), ENDOIT (MicroNX, Korea), TRAUS ENDO (Saeshin, Korea).

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  Fig. 2 Clamped wireless endodontic handpiece.

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  Fig. 3 Representative photograph of vibration test. (A) Tri-axial accelerometer, (B) DAQ Board, Wi-Fi Carrier, (C) NI Sound and Vibration Assistant 2009 software.

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  Fig. 4 Vibration graph of X Smart IQ, Y axis. CW, Clock wise; CCW, Counter clock wise; T, Time period.

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  Fig. 5 Vibration graph of E Connect S, Y axis . CW, Clock wise; CCW, Counter clock wise; T, Time period.

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  Fig. 6 Vibration graph of Endo A Class, Y axis. CW, Clock wise; CCW, Counter clock wise; T, Time period. Vibratory acceleration (g) 10

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  Fig. 7 Vibration graph of ENDOIT, Y axis. CW, Clock wise; CCW, Counter clock wise; T, Time period.

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  Fig. 8 Vibration graph of TRAUS ENDO, Y axis. CW, Clock wise; CCW, Counter clock wise; T, Time period.

Reference

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