Article Figures & Data
Figures
- Figure 1:
Experimental Handpieces
From left to right: Corded HP-A; Corded HP-B; Cordless HP-C (Dentsply, International, York, Penn.)
- Figure 2:
Simulated Polishing Set Up
Pictured: Mannequin, typodont and participant with EMG electrodes attached to skin over 4 muscle sites for recording electrical activity of muscles.
- Figure 3:
Integrated EMG (Means and Standard Deviation Error Bars) of the 4 Muscle Sites for Polishing With the 3 Different Handpieces (Corded HP–A, HP–B and Cordless HP–C)
Integrated EMG is the area under the rectified voltage-time (V.s) curve, which quantifies total muscle activity. The 4 muscles are: flexor digitorum superficialis, flexor pollicis longus, extensor digitorum communis and extensor carpi radialis brevis. The cordless handpiece (HP-C) resulted in significantly lower integrated EMG for the flexor digitorum superficialis, extensor digitorum communis and extensor carpi radialis brevis muscles (p<0.05).
Tables
- Table II:
Group Mean and Standard Deviations for 10th, 50th and 90th Percentile Levels of Activity for the Flexor Digitorum Superficialis, Flexor Pollicis Longus, Extensor Digitorum Communis and Extensor Carpi Radialis Brevis Muscles During Polishing With 3 Types of Handpiece
- Table III:
Mean and Standard Deviation of Survey Handpiece Comfort Ratings for Grip Diameter, Balance, Maneuverability and Weight
- Table IV:
Results from Question 3 of the Survey - What Would You Change about Preferred Handpiece?
- Table V:
Results from Question 2 of the Survey - What Did You like Most about Your Preferred Handpiece
