CEPHAL AD.
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  • About
  • home
  • CEPHALOMETRY
    • Mean values
    • face puzzle
    • lets get critical
    • lets get critical 2
    • less criticable
    • analysis >
      • relevant elements
      • Manual
      • Computerized
      • TOP 12
      • TOP 8
      • Face Value
      • 3Dperspectives
  • Cephalo Docs
    • ARCHITECTURAL BALANCE
    • Architectural class 2 factors
    • THE PATH
  • VIDEOS
    • ANALYSIS BASICS
    • CONCEPTUAL BASICS
    • MAKE IT SIMPLE
    • FACE AND SPINE
    • LASCAU
    • SNA SNB SN What ?
  • Cleft lip and ...
    • PreMax rehab 2
    • PreMax Rehab in CLP
  • About

MANUAL TRACING



Because of the need to evaluate different balance options in each patient, the Delaire cephalometric analysis is an informatized tool. However it is still possible /necessary to draw it " by hand". Beside its availability, manual drawing remains a pedagogical essential tool.  Spending hours in front of a lateral cephalometry  carefully marking the landmarks, spending even more time to compare the pre and post op results, are essential  to understand the mechanic of the face.


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Drawing of the upper baseline of the skull C1
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Craniofacial boundary C2

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Drawing of  the height of the skull C3
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Drawing og the basilar slope C4


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Drawing of the  anterior line of equilibrium of the face F1
 Cranio-adapted angle C1-F1 in the orthofrontal subject:
 - woman, child = 85° + or - the angular correction,
 - adult male = 90° + or - the angular correction.

- the angular correction  (or adaptation of cranial factors to the sagittal orientation of F1):
- Cranial factors:
- C1-C2 angle variations,
- C3/C2 reports,
- craniofacial field (CFC)/cranio-spinal field (CRC) ratios,
- C1-C4 angle variations,
- variations in the level of the occipital bone  (N = + or - 2 mm).


- variations of  the C1-F1 angle in (+) or (-)  :
0.50° for 1° of C1-C2,
0.25° for 1° of C1-C4,
0.25° for 2% C3/C2,
0.25° for 1% of RTC,
0.25° for 2 mm from the level of the occipital bone.

(this is done automatically in the drawing software. One can have a first idea by using a 90° angle in male and 85° angle in female and kids.
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Drawing of  the mean face balance line  F2
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Drawing of the posterior line of the face F3
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Drawing of the  cervico-palatal line F4. Normally Od PNS Np and ANS are on the same level. Il not the best option has to be chosen.
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Drawing of the facial height F5, in 1 2 3 mm or even more in front of N...
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Draing of the maxillo-ramal line 6.
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Drawing of the cranio mandibulare line F7.

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Finally drawing of the occlusal line F8. It must cross the soft tissues in the area of the buccal commissure... Otherwise, different option has to be taken into account.

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Drawing of the dental lines d1 and d2.
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FINAL RESULT ....

SOME EXAMPLES IN CASE OF CLASS II

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