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TODC-B'LORE.2005-06
Orientation Jaw Relation
TODC-B'LORE.2005-06
Topics of Discussion
Introduction
Definitions
Review of literature
Classification
Parts of facebow
Dis...
TODC-B'LORE.2005-06
Introduction
The maxillary arch has a definite 3-
dimensional relationship to all condylar
motions of ...
TODC-B'LORE.2005-06
Jaw relations can be classified as
1.Orientation jaw relation
2. Vertical jaw relation
3. Horizontal j...
TODC-B'LORE.2005-06
Orientation jaw relation
Orientation jaw relations establishes the
references in the cranium.
The mand...
 Orientation Jaw Relations are those relations
that orient the mandible to the cranium in
such a way that when the mandib...
TODC-B'LORE.2005-06
Facebow
transfer is the
first step in
recording the
relationship
of the
maxillary arch
to the
condylar...
TODC-B'LORE.2005-06
Maxillomandibular relationship: any
spatial relationship of the maxillae to the
mandible; any one of t...
TODC-B'LORE.2005-06
 Transverse horizontal axis: an
imaginary line around which the mandible
may rotate within the sagitt...
TODC-B'LORE.2005-06
Retruded contact position: that guided
occlusal relationship occurring at the most
retruded position o...
TODC-B'LORE.2005-06
Face-bow: a caliper-like instrument used
to record the spatial relationship of the
maxillary arch to s...
TODC-B'LORE.2005-06
Review of literature
In 1860 according to Bonwill, the distance
from the centre of each condyle to the...
TODC-B'LORE.2005-06
In 1866 Balkwill designed an apparatus
called “bite- frame”.
In 1880 Hayes used tong like device which...
TODC-B'LORE.2005-06
Walker invented
FACIAL CLINOMETER
to determine
mandibular movements
in 1896.
TODC-B'LORE.2005-06
A little later, at about
the turn of century
ALFERED GYSI
developed an
instrument similar to
face bow ...
TODC-B'LORE.2005-06
SNOW introduced face
bow in 1899 and
majority of the face bow
used today are
modifications of Snow's
f...
TODC-B'LORE.2005-06
CLASSIFICATION OF FACE BOW
Arbitrary
Fascia Type
Earpiece Type
Twirl bow
Spring bow
Slidematic
Kinemat...
TODC-B'LORE.2005-06
ARBITRARY FACEBOW
a device used to
arbitrarily relate the
maxillary cast to the
condylar elements of
a...
TODC-B'LORE.2005-06
TYPES OF ARBITRARY FACEBOWS
TODC-B'LORE.2005-06
Fascia Type
TODC-B'LORE.2005-06
Earpiece Type
TODC-B'LORE.2005-06
Spring bow
TODC-B'LORE.2005-06
EAR PLUGS
ANTERIOR
REFERENCE
POINTER
Slidematic
TODC-B'LORE.2005-06
KINEMATIC FACE BOW
a face-bow with
adjustable caliper
ends used to locate
the transverse
horizontal ax...
TODC-B'LORE.2005-06
Arbitrary vs. Kinematic
Land marks
Chair side time
Facebow fork attachment
Method
Use
TODC-B'LORE.2005-06
BASIC PARTS OF A FACEBOW
U shaped frame work.
Condylar rods.
Bite fork.
Locking device
Orbital pointer...
TODC-B'LORE.2005-06
Spring bow
TODC-B'LORE.2005-06
U shaped frame
TODC-B'LORE.2005-06
TODC-B'LORE.2005-06
Bite fork
TODC-B'LORE.2005-06
Bite fork assembly
TODC-B'LORE.2005-06
Transfer jig assembly
TODC-B'LORE.2005-06
INDICATIONS OF FACEBOW
 Balanced occlusion is desired.
 Cusp form teeth are used.
 Interocclusal ch...
TODC-B'LORE.2005-06
Complete maxillary denture opposes a
natural dentition
Remounting of dentures
TODC-B'LORE.2005-06
Is facebow transfer essential in all
cd cases?
TODC-B'LORE.2005-06
It is not required when
Monoplane teeth are used
No alterations to occlusal surface of teeth
are done
...
TODC-B'LORE.2005-06
ADVANTAGES OF FACEBOW
Reduce errors in occlusion.
More accurate programming of articulator.
Supports t...
TODC-B'LORE.2005-06
SOME COMMONLY USED ANTERIOR
REFERENCE POINT
Orbitale
Orbital minus 7mm
Nasion minus 23mm
Ala of the no...
TODC-B'LORE.2005-06
SOME COMMONLY USED POSTERIOR
REFERENCE POINT
 Bregstrom point
 Beyron point
TODC-B'LORE.2005-06
COMMONLY USED PLANES OF
ORIENTATION DURING FACEBOW
TRANSFERS
Axis – orbitale
plane.
Frankfort plane.
C...
TODC-B'LORE.2005-06
Pre-requisites for facebow transfer
 Check for
 Lip support
 Plane of occlusion
 Reference lines
...
TODC-B'LORE.2005-06
Techniques to record face bow
 A separate transfer record base is
recommended for transferring maxill...
TODC-B'LORE.2005-06
PROCEDURE FOR FACE BOW TRANSFER USING
ARBITRARY FACEBOW
Posterior reference
point is measured
and mark...
TODC-B'LORE.2005-06
The Bite fork is
attached to the
maxillary occlusal
Rim.
Occlusal rim are
inserted into patient
mouth....
TODC-B'LORE.2005-06
PROCEDURE FOR FACEBOW TRANSFER USING
KINEMATIC FACEBOW
Facebow is
attached to the
lower jaw by
means o...
TODC-B'LORE.2005-06
Patient is asked to
open and close the
mandible at centric.
Initial movement of
the stylus may be arc
...
TODC-B'LORE.2005-06
ERRORS IN RECORDING HINGE
AXIS
Movement of the skin over the condyle
during registration.
Tipping of B...
TODC-B'LORE.2005-06
The bite fork shaft
should be at the
left of patient’s
midline
TODC-B'LORE.2005-06
Bite fork assembly
TODC-B'LORE.2005-06
 The bite fork clamp
is slid onto the
shaft
TODC-B'LORE.2005-06
 Open the bow by
pulling outward on
the arms and then
swing it down into
position, placing an
earpiec...
TODC-B'LORE.2005-06
 Have the patient
adjust the facebow
into a comfortable
position.
TODC-B'LORE.2005-06
 The infra orbital
notch is located
and marked.
TODC-B'LORE.2005-06
 The pointer is
rotated toward the
reference mark
TODC-B'LORE.2005-06
 The bow is
secured with one
hand while the
thumbscrews on
the assembly with
the other hand.
TODC-B'LORE.2005-06
 The thumbscrews
are tightened in
order: 1, 2, 3. from
left to right.
TODC-B'LORE.2005-06
 Rotate the orbital
pointer away from
the eye.
 Have the patient
remove the
earpieces from the
audit...
TODC-B'LORE.2005-06
Preparing the articulator for Mounting
TODC-B'LORE.2005-06
 Horizontal condylar
inclination
TODC-B'LORE.2005-06
 Lateral condylar
inclination
TODC-B'LORE.2005-06
 Centric locks
TODC-B'LORE.2005-06
 Attach the
mounting guide /
platform to the
lower member of
the articulator
TODC-B'LORE.2005-06
 Place the vertical
transfer rod of
the facebow
assembly into
the hole at the
front of the
mounting g...
TODC-B'LORE.2005-06
 Carefully seat the
maxillary cast on
the bite fork.
 Mounting of the
maxillary cast is
done.
TODC-B'LORE.2005-06
CONCLUSION
 Though blind orientation of maxillary cast
may result in an error so slight that a
facebo...
TODC-B'LORE.2005-06
BIBLIOGRAPHY
 Prosthodontic treatment for edentulousProsthodontic treatment for edentulous
patient-(8...
TODC-B'LORE.2005-06
 The Glossary of Prosthodontic Terms
 JPD-1953,VOL.3
 JPD-1979,VOL.41,NO.5
 JPD-2000,VOL.9,NO.3
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Orientation jaw relation/ dentistry jobs

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Orientation jaw relation/ dentistry jobs

  1. 1. TODC-B'LORE.2005-06 Orientation Jaw Relation
  2. 2. TODC-B'LORE.2005-06 Topics of Discussion Introduction Definitions Review of literature Classification Parts of facebow Discussion Conclusion Bibliography
  3. 3. TODC-B'LORE.2005-06 Introduction The maxillary arch has a definite 3- dimensional relationship to all condylar motions of the mandible.
  4. 4. TODC-B'LORE.2005-06 Jaw relations can be classified as 1.Orientation jaw relation 2. Vertical jaw relation 3. Horizontal jaw relation
  5. 5. TODC-B'LORE.2005-06 Orientation jaw relation Orientation jaw relations establishes the references in the cranium. The mandible rotates in the sagittal plane around an imaginary transverse axis passing through or near the condyles. This axis can be located by means of an instrument called FACEBOW
  6. 6.  Orientation Jaw Relations are those relations that orient the mandible to the cranium in such a way that when the mandible is kept in its most retruded position with the maxilla, the mandible moves in sagittal plane around an imaginary transverse axis passing through the centre or near the condyles TODC-B'LORE.2005-06
  7. 7. TODC-B'LORE.2005-06 Facebow transfer is the first step in recording the relationship of the maxillary arch to the condylar paths on the articulator.
  8. 8. TODC-B'LORE.2005-06 Maxillomandibular relationship: any spatial relationship of the maxillae to the mandible; any one of the infinite relationships of the mandible to the maxillae [Gpt-99].
  9. 9. TODC-B'LORE.2005-06  Transverse horizontal axis: an imaginary line around which the mandible may rotate within the sagittal plane [Gpt-99].
  10. 10. TODC-B'LORE.2005-06 Retruded contact position: that guided occlusal relationship occurring at the most retruded position of the condyles in the joint cavities. A position that may be more retruded than the centric relation position [Gpt-99].
  11. 11. TODC-B'LORE.2005-06 Face-bow: a caliper-like instrument used to record the spatial relationship of the maxillary arch to some anatomic reference point or points and then transfer this relationship to an articulator; it orients the dental cast in the same relationship to the opening axis of the articulator. Customarily, the anatomic references are the mandibular condyles transverse horizontal axis and one other selected anterior point; called also hingebow [Gpt-99].
  12. 12. TODC-B'LORE.2005-06 Review of literature In 1860 according to Bonwill, the distance from the centre of each condyle to the median incisal point of the lower teeth is 10 cm. He used this standard for mounting his casts in the articulator.
  13. 13. TODC-B'LORE.2005-06 In 1866 Balkwill designed an apparatus called “bite- frame”. In 1880 Hayes used tong like device which he called it “articulating caliper”. In 1894 George k Bagby devised an apparatus called “bagby jaw gage”.
  14. 14. TODC-B'LORE.2005-06 Walker invented FACIAL CLINOMETER to determine mandibular movements in 1896.
  15. 15. TODC-B'LORE.2005-06 A little later, at about the turn of century ALFERED GYSI developed an instrument similar to face bow primarily to record the path of the condyle.
  16. 16. TODC-B'LORE.2005-06 SNOW introduced face bow in 1899 and majority of the face bow used today are modifications of Snow's face bow.
  17. 17. TODC-B'LORE.2005-06 CLASSIFICATION OF FACE BOW Arbitrary Fascia Type Earpiece Type Twirl bow Spring bow Slidematic Kinematic
  18. 18. TODC-B'LORE.2005-06 ARBITRARY FACEBOW a device used to arbitrarily relate the maxillary cast to the condylar elements of an articulator. The position of the transverse horizontal axis is estimated on the face before using this device [Gpt-99].
  19. 19. TODC-B'LORE.2005-06 TYPES OF ARBITRARY FACEBOWS
  20. 20. TODC-B'LORE.2005-06 Fascia Type
  21. 21. TODC-B'LORE.2005-06 Earpiece Type
  22. 22. TODC-B'LORE.2005-06 Spring bow
  23. 23. TODC-B'LORE.2005-06 EAR PLUGS ANTERIOR REFERENCE POINTER Slidematic
  24. 24. TODC-B'LORE.2005-06 KINEMATIC FACE BOW a face-bow with adjustable caliper ends used to locate the transverse horizontal axis of the mandible [Gpt-99].
  25. 25. TODC-B'LORE.2005-06 Arbitrary vs. Kinematic Land marks Chair side time Facebow fork attachment Method Use
  26. 26. TODC-B'LORE.2005-06 BASIC PARTS OF A FACEBOW U shaped frame work. Condylar rods. Bite fork. Locking device Orbital pointer with clamp (optional). Additional features & parts vary according to types & brands.
  27. 27. TODC-B'LORE.2005-06 Spring bow
  28. 28. TODC-B'LORE.2005-06 U shaped frame
  29. 29. TODC-B'LORE.2005-06
  30. 30. TODC-B'LORE.2005-06 Bite fork
  31. 31. TODC-B'LORE.2005-06 Bite fork assembly
  32. 32. TODC-B'LORE.2005-06 Transfer jig assembly
  33. 33. TODC-B'LORE.2005-06 INDICATIONS OF FACEBOW  Balanced occlusion is desired.  Cusp form teeth are used.  Interocclusal check records are used.  Full mouth rehabilitation  Diagnosis & treatment planning.
  34. 34. TODC-B'LORE.2005-06 Complete maxillary denture opposes a natural dentition Remounting of dentures
  35. 35. TODC-B'LORE.2005-06 Is facebow transfer essential in all cd cases?
  36. 36. TODC-B'LORE.2005-06 It is not required when Monoplane teeth are used No alterations to occlusal surface of teeth are done Articulators that do not accept facebow transfer
  37. 37. TODC-B'LORE.2005-06 ADVANTAGES OF FACEBOW Reduce errors in occlusion. More accurate programming of articulator. Supports the cast while mounting on the articulator. Assist in correctly locating the incisal plane
  38. 38. TODC-B'LORE.2005-06 SOME COMMONLY USED ANTERIOR REFERENCE POINT Orbitale Orbital minus 7mm Nasion minus 23mm Ala of the nose 43 mm superior from lower border of upper lip (Denar reference plane locator).
  39. 39. TODC-B'LORE.2005-06 SOME COMMONLY USED POSTERIOR REFERENCE POINT  Bregstrom point  Beyron point
  40. 40. TODC-B'LORE.2005-06 COMMONLY USED PLANES OF ORIENTATION DURING FACEBOW TRANSFERS Axis – orbitale plane. Frankfort plane. Camper’s plane. Axis – Nasion plane.
  41. 41. TODC-B'LORE.2005-06 Pre-requisites for facebow transfer  Check for  Lip support  Plane of occlusion  Reference lines  Midline  High lip line  Canine line
  42. 42. TODC-B'LORE.2005-06 Techniques to record face bow  A separate transfer record base is recommended for transferring maxillary cast to articulator  If same record base is used for centric record  transfer record can be made prior to centric record  transfer record can be made after centric record
  43. 43. TODC-B'LORE.2005-06 PROCEDURE FOR FACE BOW TRANSFER USING ARBITRARY FACEBOW Posterior reference point is measured and marked. Condylar rod or earpiece is positioned on posterior reference point The locking nuts are then secured.
  44. 44. TODC-B'LORE.2005-06 The Bite fork is attached to the maxillary occlusal Rim. Occlusal rim are inserted into patient mouth. The midline of bite fork should coincide with the midline of the maxillary occlusal rim.
  45. 45. TODC-B'LORE.2005-06 PROCEDURE FOR FACEBOW TRANSFER USING KINEMATIC FACEBOW Facebow is attached to the lower jaw by means of clutch. Graph of Grid paper is placed near temperomandibula r joint region detects the stylus movement.
  46. 46. TODC-B'LORE.2005-06 Patient is asked to open and close the mandible at centric. Initial movement of the stylus may be arc shaped. The stylus is adjusted until the tip rotates instead of arcing. This point identified as the hinge axis is tattooed on the skin.
  47. 47. TODC-B'LORE.2005-06 ERRORS IN RECORDING HINGE AXIS Movement of the skin over the condyle during registration. Tipping of Base will invalidate the eventual recording. The angle of opening movement is small about 10-12 degrees and thus the arc of movement of the stylus is small.
  48. 48. TODC-B'LORE.2005-06 The bite fork shaft should be at the left of patient’s midline
  49. 49. TODC-B'LORE.2005-06 Bite fork assembly
  50. 50. TODC-B'LORE.2005-06  The bite fork clamp is slid onto the shaft
  51. 51. TODC-B'LORE.2005-06  Open the bow by pulling outward on the arms and then swing it down into position, placing an earpiece gently into each external auditory meatus.
  52. 52. TODC-B'LORE.2005-06  Have the patient adjust the facebow into a comfortable position.
  53. 53. TODC-B'LORE.2005-06  The infra orbital notch is located and marked.
  54. 54. TODC-B'LORE.2005-06  The pointer is rotated toward the reference mark
  55. 55. TODC-B'LORE.2005-06  The bow is secured with one hand while the thumbscrews on the assembly with the other hand.
  56. 56. TODC-B'LORE.2005-06  The thumbscrews are tightened in order: 1, 2, 3. from left to right.
  57. 57. TODC-B'LORE.2005-06  Rotate the orbital pointer away from the eye.  Have the patient remove the earpieces from the auditory meati
  58. 58. TODC-B'LORE.2005-06 Preparing the articulator for Mounting
  59. 59. TODC-B'LORE.2005-06  Horizontal condylar inclination
  60. 60. TODC-B'LORE.2005-06  Lateral condylar inclination
  61. 61. TODC-B'LORE.2005-06  Centric locks
  62. 62. TODC-B'LORE.2005-06  Attach the mounting guide / platform to the lower member of the articulator
  63. 63. TODC-B'LORE.2005-06  Place the vertical transfer rod of the facebow assembly into the hole at the front of the mounting guide and secure it by a screw
  64. 64. TODC-B'LORE.2005-06  Carefully seat the maxillary cast on the bite fork.  Mounting of the maxillary cast is done.
  65. 65. TODC-B'LORE.2005-06 CONCLUSION  Though blind orientation of maxillary cast may result in an error so slight that a facebow appears unnecessary, however since the procedure is not complicated, not time consuming, the chances of incorporating an error should not be taken.  Any error that can be eliminated in denture construction will make physiologic acceptance of denture easier.
  66. 66. TODC-B'LORE.2005-06 BIBLIOGRAPHY  Prosthodontic treatment for edentulousProsthodontic treatment for edentulous patient-(8patient-(8th,th, 1111thth , 12, 12thth ,),) BoucherBoucher  Syllabus of Complete Denture-Syllabus of Complete Denture- HartwellHartwell  Essentials of complete denture-Essentials of complete denture- WinklerWinkler  Complete Denture Prosthodontics John J SharryJohn J Sharry
  67. 67. TODC-B'LORE.2005-06  The Glossary of Prosthodontic Terms  JPD-1953,VOL.3  JPD-1979,VOL.41,NO.5  JPD-2000,VOL.9,NO.3

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