Photogrammetric measurement of initial tooth displacement under tensile force
| Autor: | Manfred Wichmann, Johannes Schmitt, Matthias Goellner, Stefan Holst, Matthias Karl |
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| Rok vydání: | 2010 |
| Předmět: |
Adult
Male Cuspid Digital image correlation Materials science Biomedical Engineering Biophysics Dentistry Tooth mobility Young Adult stomatognathic system Incisor medicine Humans Displacement (orthopedic surgery) Orthodontics Reproducibility Tension (physics) business.industry Biomechanics Reproducibility of Results Biomechanical Phenomena stomatognathic diseases medicine.anatomical_structure Photogrammetry Jaw Female Tooth Mobility business |
| Zdroj: | Medical Engineering & Physics. 32:883-888 |
| ISSN: | 1350-4533 |
| Popis: | The purpose of this study was to quantitatively measure tooth displacement under low horizontal tensile force (≤18 N) and to test the reproducibility of measurements. Anterior tooth mobility was measured using a photogrammetric measurement technique in 23 periodontally healthy subjects. While slowly increasing the tension on each tooth, an automated software program recorded three-dimensional tooth displacement at 3 N intervals, up to 18 N. Measurements were repeated three-times for each tooth. The vector of absolute tooth mobility in the buccal direction was calculated. Intra-class correlations of the three repeated measurements of each tooth were calculated and ranged between "good" and "optimal". The agreement of measurements was significant (p≤0.05). The analysis of differences between the deviation vectors of contralateral teeth revealed that most differences emerged to be statistically non-significant. The combination of a mechanical loading approach with the optoelectronic system allowed the measurement of three-dimensional tooth mobility in vivo. |
| Databáze: | OpenAIRE |
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