Study of the effect of different frequencies on the irradiance of dental LEDs using pulse width modulation

Rosalind Fawnia Margeritha, Tomy Abuzairi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A light curing unit (LCU) is a device that serves to improve the condition of damaged teeth. It has a high irradiance value, which is feared to damage pulp and tooth tissue. In the latest technology for dental applications, a high-power light-emitting diode (LED) has been used for a dental LCU. The purpose of this study is to determine the effect of a high frequency on the irradiance of LCU LEDs using pulse width modulation (PWM) methods. The PWM method is carried out by applying high and low frequencies to produce a desired LED irradiance. The result shows that there is no significant difference in the irradiance values of the dental LED between high- (f = 5 kHz and f = 2.5 kHz) and low frequency (f = 0.5 kHz) modulations. From the results, only the duty cycle greatly affects the irradiance output of the dental LED.

Original languageEnglish
Title of host publication4th Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, Health, and Medical Devices
Subtitle of host publicationProceedings of the International Symposium of Biomedical Engineering, ISBE 2019
EditorsKenny Lischer, Tomy Abuzairi, Siti Fauziyah Rahman, Misri Gozan
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419445
DOIs
Publication statusPublished - 10 Dec 2019
Event4th International Symposium of Biomedical Engineering�s Recent Progress in Biomaterials, Drugs Development, Health, and Medical Devices, ISBE 2019 - Padang, West Sumatera, Indonesia
Duration: 22 Jul 201924 Jul 2019

Publication series

NameAIP Conference Proceedings
Volume2193
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Symposium of Biomedical Engineering�s Recent Progress in Biomaterials, Drugs Development, Health, and Medical Devices, ISBE 2019
CountryIndonesia
CityPadang, West Sumatera
Period22/07/1924/07/19

Keywords

  • dental light curing unit
  • frequency
  • LED
  • pulse width modulation

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