Premium
Measuring system for lip movements using two video trackers
Author(s) -
Sekita T.,
Minakuchi S.,
Hirano Y.,
Kobayashi K.,
Nagao M.
Publication year - 2000
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.2000.00616.x
Subject(s) - movement (music) , bittorrent tracker , mastication , oral cavity , soft tissue , computer science , orthodontics , artificial intelligence , medicine , acoustics , eye tracking , physics , surgery
Movements of soft tissues surrounding the oral cavity, especially lips and cheeks, have a strong influence on mastication and phonetics. They also influence the relationship between a denture and its oral environment. The purpose of this study was to develop a three‐dimensional measuring system for soft tissue movement. This system consisted of two video trackers placed stereographically and a computer. In addition, one video tracker was connected for measuring mandibular movements. The accuracy of this system was evaluated using computerized XYZ pulse stage. The resolution of this system was 0·10×0·10×0·10 mm, when the measurement was carried out in the area of the 24·0 ( X )×20·0 ( Y )×20·0 ( Z ) mm with a working distance of 500 mm and a frequency of 120 Hz. In the present study, the lip movements of a dentulous subject with mandibular movements during chewing peanuts were analysed using this system. The new system demonstrated its value for analysing soft tissue movement.