High-speed filming of the Periotest measurement
Monika Reim
Fraunhofer-Institute of Information and Data Processing, Karlsruhe, Germany
and
Dieter Lukas
clinic of Oral Surgery and Periodontology, University of Tübingen,
Germany
in collaboration with the Fraunhofer-Institute for Photography and Cinematography,
Freiburg, Germany
3000 frames per second, 60 fold slow motion
1. Tooth mobility index 0, tooth deflection smaller than 20µm,
time tapping head and tooth are in contact 0.6ms
2. Tooth mobility index II, tooth deflection up to 180µm,
time tapping head and tooth are in contact 2.3ms
movie starts in 30 seconds
Dieter Lukas,
update: 2002-VII-4.