Testing and Correlating Speed, Torque, Airflow, and Noise on Dental Turbines

Autor(es)

Tirapelli, Camila ^[1] ; de Freitas, Bruna Neves ^[1] ; de Sousa Pereira, Raony Molim ^[1] ; Alves Pereira, Antonio Henrique ^[2]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF TESTING AND EVALUATION; v. 49, n. 2, p. 1222-1227, MAR 2021.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 13/03351-9 - Avaliação da eficácia e aplicabilidade de um novo equipamento para controle de qualidade de motores e ultrassons odontológicos
• Beneficiário: Raony Môlim de Sousa Pereira
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 12/15374-0 - Avaliação da eficácia e aplicabilidade de um novo equipamento para controle de qualidade de motores e ultrassons odontológicos
• Beneficiário: Camila Tirapelli
• Modalidade de apoio: Auxílio à Pesquisa - Regular