A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 19/04 (2006.01)
Patent
CA 2272248
This invention is a device and method for the detection of smooth surface lesions such as caries and tooth crown surface cracks on a tooth crown surface, the device having an ultrasonic surface wave transmitter/receiver (20) capable of transmitting ultrasonic surface waves along a tooth crown surface. Surface lesions encountered by the ultrasonic surface waves produce ultrasonic surface wave reflections which are receivable at the generator/receiver, thus enabling the presence of the lesion to be detected. The ultrasonic surface wave generator/receiver may comprise a transducer operatively connected to a wedge-like coupler (30). Longitudinal ultrasonic waves generated by the transducer are imparted onto the tooth surface by the coupler which has a contact surface in contact with the tooth surface being tested. The coupler also enables ultrasonic surface wave reflections to be received by the transducer.
La présente invention concerne un procédé et un dispositif de détection de lésions superficielles lisses telles que des caries et des fissures superficielles de la couronne dentaire. Ce dispositif comporte un émetteur/récepteur (20) d'ondes de surface ultrasonores capable d'émettre des ondes de surface ultrasonores le long de la surface de la couronne dentaire. Les lésions superficielles rencontrées par les ondes de surface ultrasonores produisent des réflexions d'ondes de surface ultrasonores revenant au générateur/récepteur, ce qui permet de détecter la présence de la lésion. Ce générateur/récepteur d'ondes de surface ultrasonores peut comporter un transducteur fonctionnellement raccordé à un coupleur de type biseauté (30). Les ondes ultrasonores longitudinales générées par le transducteur sont appliquées à la surface de la dent via le coupleur dont la surface de contact touche la surface de dent à vérifier. Ce coupleur permet également au transducteur de recevoir les ondes de réflexion ultrasonores de surface.
Bab Itai
Feuerstein Osnat
Ziv Vered
Bab Itai
Feuerstein Osnat
Goudreau Gage Dubuc
Novadent Ltd.
Ziv Vered
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