Student’s satisfaction with turbine and electrical handpiece. Comparison cavity preparation

To compare the satisfaction level of use of high-speed turbine and electrical  handpiece 1:5 between students of 2^nd and 5^th year of Dentistry Degree, and compare the quality of cavity preparation fabricated with both instruments.

Method:

40 students (20 of 2^nd and 20 of 5^th year) each one cut two Class I preparations, one with an air turbine Bora L (Bien-Air Dental SA, Bienne, Switzerland) and the other with an electric high-speed handpiece 1:5 controlled by Optimax Internal (Bien-Air Dental SA, Bienne, Switzerland). Each preparation had 3mmx2mmx2mm. Before and after the in vitro experiment, each student fills in a questionnaire to know their level of knowledge and satisfaction. After that, faculty members evaluated the preparations using a nine-point scale

Result:

The level of satisfaction of use of turbine was higher than high speed handpiece in both courses. The mean satisfaction of turbine in 2^nd year was 8.27 and in 5^th year was 8.8 in front of the level of high-speed handpiece in 2^nd year was 5.06 and in 5^th year was 6.62.  The range of quality preparations was higher in the group of 5^th year with two instruments (6.92±1.49; 7.5±1.31) in front of the scores obtained in 2^nd year group (5.55±2.46; 5.12±2.61)

Conclusion:

Both groups prefer use turbine over an electrical handpiece. The quality of preparations was higher in 5^th year.