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12. Dental analysis
Maxillary incisor position
Relating teeth to N-A line
Mandibular incisor position
Relating teeth to N-B line
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13. Mx. C.I. to N.A. line angle
Mean value = 22
Distance b/w most
antr point of crown to
N.A. line is normally
4 mm.
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14. Mb. C.I. to N.B. line angle
Mean value = 25
Distance b/w most
antr point of crown to
N.B. line is normally
4 mm.
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16. Lower incisor to chin
According to Holdway
distance b/w labial surface
of Mb incisor to N-B line
should be equal (i.e. 4mm)
Discrepancy
b/w 2 mm is acceptable
3 mm is less desirable, but
tolerable
>4 mm then corrective
measures are indicated
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