Optical power outputs, spectra and dental composite depths of cure, obtained with blue light emitting diode (LED) and halogen light curing units (LCUs).
In: British Dental Journal, Jg. 193 (2002-10-26), Heft 8, S. 459-463
academicJournal
Zugriff:
Objective: To test the hypothesis that a prototype LED light curing unit, (LCU), a commercial LED LCU and a halogen LCU achieve similar cure depths, using two shades of a camphorquinone photoinitiated dental composite. To measure the LCUs' outputs and the frequency of the LED LCU's pulsed light, using a blue LED array as a photodetector. Design: Cure depth and light output characterisation to compare the LCUs. Setting: An in vitro laboratory study conducted in the UK. Materials and Methods: The LCUs cured A2 and A4 composite shades. A penetrometer measured the depth of cure. Analysis was by one-way ANOVA, two-way univariate ANOVA and Fisher's LSD test with a 95% confidence interval. A power meter and spectrograph characterised the LCUs' emissions. A blue LED array measured the pulsed light frequency from an LED LCU. Results: Statistically significant different LCU irradiances (119 mW/cm2 to 851 mW/cm2) and cure depths (3.90 mm SD +/- 0.08 to 6.68 mm SD +/- 0.07) were achieved. Composite shade affected cure depth. A blue LED array detected pulsed light at 12 Hz from the commercial LED LCU. Conclusions: The prototype LED LCU achieved a greater or equal depth of cure when compared with the commercial LCUs. LEDs may have a potential in dentistry for light detection as well as emission. [ABSTRACT FROM AUTHOR]
Titel: |
Optical power outputs, spectra and dental composite depths of cure, obtained with blue light emitting diode (LED) and halogen light curing units (LCUs).
|
---|---|
Autor/in / Beteiligte Person: | Mills, R.W. ; Uhl, A. ; Jandt, K.D. |
Zeitschrift: | British Dental Journal, Jg. 193 (2002-10-26), Heft 8, S. 459-463 |
Veröffentlichung: | 2002 |
Medientyp: | academicJournal |
ISSN: | 0007-0610 (print) |
DOI: | 10.1038/sj.bdj.4801597 |
Schlagwort: |
|
Sonstiges: |
|