47. Needle point registration with
Gnathometer M
movement right
side
movement left
side
1. Lateral movements right and left
2. Protrusion movements
3. Retrusion movements
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49. Evaluation of the Gothic arch tracing
(According to Prof. Gerber)
• Classical pointe form
– The symmetry indicates
an undisturbed
movement sequence in
the joint and uniform
muscle guidance
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50. • Classical flat shape
– This figure indicates
pronounced lateral
motion of condyles in the
joint
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51. • Asymmetrical shape
– this figure indicates a
pronounced impediment in
the protrusive excursion of
the left mandibular joint
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52. • Arrow point is non-existant
– This figure indicates weak to
slack movement, particularly
of retrusive excursion
components; registration
must be repeated and more
concise motion are
requested
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53. • The vertical line extends
over the arrow point
– This tracing was created
by either forcefully pulling
or pushing back the
mandible
– The figure may also been
traced with a protruding
mandible
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54. • A miniature arrow
– This figure indicates
cramped movements,
poorly placed and painful
registration plates, longterm absence of teeth
with obstructed
movements in the joints,
defective prosthesis, etc.
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56. Fixation of the centric occlusion
• Aligning the funnel-shaped
opening of the fixing plate
with the needle point
• Checking the centric with
secured record bite basis
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57. • Fabricating the key with fast
setting plaster or hard
silicone
• Marking the central line
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71. Set-up of the posterior teeth in the
mandible
Selection criteria for posterior teeth
A bite analysis indicates two the dentist and
dental technician which type of posterior tooth is
best for the respective patient
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