1.5
Working with near infra-red imaging (NIRI)
NIRI is a method of spectroscopy that uses the near-infrared region of the electromagnetic spectrum (850nm).
Figure 6: Visible light spectrum showing NIRI on the 850nm wavelength
When the wand is positioned above the tooth, NIR images are captured.
The translucency of the structure translates to the brightness level in the NIRI image – the higher the translucency,
the darker the object, and vice versa. Tooth enamel is translucent to NIRI and will appear dark. Dentin and any
interference in the enamel, e.g. caries, are reflective and cause the light to scatter, and therefore will appear brighter
and opaque.
A
Wand positioned on the tooth
surface
B
Tooth enamel is translucent
C
Dentin and caries are reflective
Figure 7: Reflective concept – healthy enamel is translucent while dentin and caries are reflective
iTero Element® 5D Plus User manual
© 2020 Align Technology, Inc. All rights reserved.
5
Summary of Contents for Element 5D Plus
Page 1: ...iTero Element 5D Plus User manual it starts with...
Page 2: ......
Page 26: ...iTero Element 5D Plus User manual 8 2020 Align Technology Inc All rights reserved...
Page 44: ...iTero Element 5D Plus User manual 26 2020 Align Technology Inc All rights reserved...
Page 122: ...iTero Element 5D Plus User manual 104 2020 Align Technology Inc All rights reserved...
Page 130: ...iTero Element 5D Plus User manual 112 2020 Align Technology Inc All rights reserved...
Page 136: ...iTero Element 5D Plus User manual 118 2020 Align Technology Inc All rights reserved...
Page 138: ...iTero Element 5D Plus User manual 120 2020 Align Technology Inc All rights reserved...
Page 184: ...iTero Element 5D Plus User manual 166 2020 Align Technology Inc All rights reserved...
Page 188: ...iTero Element 5D Plus User manual 170 2020 Align Technology Inc All rights reserved...
Page 198: ...iTero Element 5D Plus User manual 180 2020 Align Technology Inc All rights reserved...
Page 202: ...iTero Element 5D Plus User manual 184 2020 Align Technology Inc All rights reserved...
Page 207: ......