HALIFAX CONSENSUS DOCUMENTS

This contains many of the documents that have been developed since the various light curing conferences in 2014, 2015, 2016 and 2017. Stay tuned for the results from our 2018 meeting:

http://niom.no/northernlight-2018

READ THE CONSENSUS DOCUMENTS

RECENT ARTICLES

Visible Light Curing Devices - Irradiance and Use in 302 German Dental Offices

10% of the VLCs delivered < 400 mW/cm2

only 41% of the 526 VLC units had intact light tips, 27% were contaminated with composite or bonding agent residues, 14% were damaged, and 18% were both contaminated and damaged.
54% (n = 286),of dentists used a shorter exposure time which would not deliver 16 J/cm2.

48% (n = 145)  of offices reported that they do not check the output.

14% of the dental offices used no  eye protection.
More awareness about the VLCs used in the dental office is required.

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Effect of instruction, light curing unit, and location in the mouth on the energy delivered

Prior to using the patient simulator, students and their instructors thought that the students were delivering an adequate amount of energy when light curing. There was a 24 to a 52% increase in the mean radiant exposure delivered after instruction compared to before instruction.

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Effect of light curing units on the polymerization of bulk fill resin-based composites

The characteristics of the LCUs influenced the photoactivation of the RBCs. The use of a wide tip with a homogeneous light distribution is preferred when light curing RBCs using a bulk curing technique.

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Illuminating the Resin: What You Need to Know

  • Know the radiant power (mW). This (not intensity or irradiance) tells you how powerful the light is. Use the radiant power and the active tip diameter to calculate the radiant exitance (tip irradiance in mW/cm2).
  • Know the effect of distance on the irradiance received by the resin. You will probably  need to increase the exposure time as the distance increases.
  • Know the wavelengths of light and the spectral radiant power. Match the curing light to the wavelengths required to cure the resin you are using.
  • Know the beam profile. It shows you the size and uniformity of the light output – you may need multiple exposures to cover a restoration

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Irradiance Delivered by LED Light-Curing Units Used by a Left and Right-Handed Operator

The irradiance and radiant exposure can be greater when a right-hand  operator is positioned on the right side of the chair and a left-hand  operator is positioned on the left side of the chair.

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Light Output, Accessibility in Posterior Region and Emission Spectrum of Curing Lights

Differences in spectral peak, irradiance, radiant exposure, output stability, mouth accessibility, and tip size are described for a variety of light-curing units.

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