We
recently completed development of a very high-resolution
dental scanner based on our standard scanner. This dental
scanning project involved simulation and design of a
modified scanner to meet the following requirements:
| |
•
A range accuracy of 0.002”,
• A spatial resolution of better than 0.003”
(to allow small cavities and dental
features to be distinguished),
• A field of view sufficient to image 3
teeth in a single scan. |
The very high resolution required a tightly focused
laser and close range imaging. The laser, lens and CCD
were designed to meet these requirements. The scanner
real time firmware code was modified to account for
the new hardware components and the calibration procedure
was adjusted to maximize the accuracy of the scanner
at close range (3-4”). Figure 1 and Figure 2 show
the results of imaging a ceramic dental cast with the
original and modified scanners.
Figure
1 Dental scan of ceramic teeth using an unmodified
model 100 scanner. The resolution of this scanner
is approximately 0.008” and the fine details
of the teeth are not distinguishable.
Figure
2 Dental scan of ceramic teeth using the newly designed
high-resolution scanner. This scanner has a resolution
of better than 0.003” and much more detail is
available, including the teeth surface texture. |
75
Glen Road - Sandy Hook, CT 06482 - Tel: (203) 304-2443 - Fax: (203)
304-2472 - Email
