| Full text | |
| Author(s): |
Tirapelli, Camila
[1]
;
de Freitas, Bruna Neves
[1]
;
de Sousa Pereira, Raony Molim
[1]
;
Alves Pereira, Antonio Henrique
[2]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Sch Dent Ribeirao Preto, Dept Dent Mat & Prosthodont, Ave Cafe S-N, BR-14040904 Ribeirao Preto, SP - Brazil
[2] ATCP Phys Engn, Rua Leda Vassimon 735, BR-14250367 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | JOURNAL OF TESTING AND EVALUATION; v. 49, n. 2, p. 1222-1227, MAR 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The noise of dental turbines is mainly correlated with the anxiety and discomfort of patients and the work safety of the dental professionals. Rotational speed, torque, airflow, and noise have an essential role in the proper performance of dental air turbines. This work aimed to address the following question: how do rotational speed, torque, and airflow correlate with noise in dental high-speed handpieces? Three new air turbines of nine different commercial brands were essayed for rotational speed, torque, noise level (A-weighting), and airflow in agreement with ISO 14457:2017, Dentistry - Handpieces and Motors (27 handpieces) 3 times a day and for 5 days under controlled air pressure. One-way analysis of variance and Tukey's test (alpha = 0.05) showed differences among brands for speed, torque, noise, and airflow (210.17-397.93 kr/min, 0.03-0.15 N.cm, 68.80-82.16 dB, and 29.6-37.8 L/min, respectively). Speed (r= -0.7) and airflow (r= -0.6) showed an inverse correlation with noise: the higher the speed, the higher the airflow and the lower the noise. Torque showed no correlation with the speed (r = -0.1). As a conclusion, dental handpieces achieving the maximum airflow and speed can produce lower noise. (AU) | |
| FAPESP's process: | 12/15374-0 - Evaluating the effectiveness and applicability of a new equipment designed for quality control of dental handpieces and ultrasonic dental scalers |
| Grantee: | Camila Tirapelli |
| Support Opportunities: | Regular Research Grants |