Bio Research

JT-3D™ Bio-Metric Instrument

The all-new JT-3D was researched & developed to uphold an all-new standard in mandibular kinesiology. Lightweight aerospace materials and both mechanical and electrical computer aided design have perfected this precision instrument. BioResearch research and development efforts serve to ensure that each of the all-new JT-3D’s revolutionary components meld into a sleek and singular mechanism.

The JT-3D's all-new mounting system creates a quick and easy set up with proper weight distribution and a stable base with absolutely no contact with the patient's face! The eyes, nose and mouth of your patient are free of claustrophobic obstructions and completely accessible to the clinician.

The all-new JT-3D records incisor-point movements in three dimensions. A small magnet, attached to the labial surfaces of the mandibular incisors, is tracked by an array of sensors to produce vertical, antero-posterior and lateral components of movement. It mounts simply, yet securely on the head, and provides an incredibly stable base for the sensors. This provides spectacular resolution even on the smallest of mandibular movements.

Maximum Range of Motion / Lateral Excursions


Direct Linear Range Useful Range
Vertical 50 mm 60 mm
Antero-posterior 40 mm 50 mm
Lateral 30 mm 40 mm
SLANT (Boley) 64 mm 78 mm

Reproducibility can be enhanced by careful application of the magnet and the array. With adequate application, sagittal plane ROM measurements of any jaw movements within the specified ranges are reproducible to within + 5 % of full scale.

Bite Registration/Freeway Space (+ 10 mm from the center of the array)

Linearity Maximum A/D Resolution Accuracy
+ 5% of full scale 1 bit = 0.03125 mm +5% of full scale

Physical Specifications:Magnet

Weight : 0.1 oz (2.8 g)
Dimensions : 0.55 in. (13.97mm) L by 0.25 in. (6.35mm) W by 0.17 / in. (4.32 mm) T
Coating : Electroless Nickel Plating
Position : Alignment groove outward and to the patient's left
Magnetic axis : Width of Magnet
Coercive Force : > 9.000 Oerstads (to demagnetize)
Infection Control : Cold solution (follow manufacturer's recommendations precisely)
Sensors : 8 Flux Gate Capassitors
Power Consumption : < 3 watts