overview of classification and scoring system

1. DR. ALI WAQAR HASAN
FCPS-II TRAINEE ORTHODONTICS
UCMD LAHORE
SUPERVISED BY : DR. SAAD ASAD
ASSOCIATE PROFESSOR OF ORTHODONTICS
UCMD LAHORE

2. INTRODUCTION
 Ackerman and Profitt presented
their system in 1960
 It was proposed to overcome the
drawbacks of Angle’s
classification
 This system includes Angle’s
classification & five
characteristics of malocclusion
within a Venn diagram

3. SALIENT FEATURES
 Transverse and vertical
discrepancies can be considered in
addition to antero-posterior
malrelations
 Crowding and Arch asymmetry can
be evaluated
 Incisor protrusion is taken into
account

5. DENTOFACIAL APPEARANCE
 PROFILE : concave, straight,
convex
 LIPS : protrusive, normal,
retrusive
 INCISOR DISPLAY : Excessive,
normal, Inadequate

6. TEETH / ARCH FORM
 Involves assessment of alignment and symmetry of
dental arch
 Classified as IDEAL / CROWDED / SPACED

7. TRANSVERSE
 The transverse skeletal and
dental relationship is
evaluated
 Buccal and palatal crossbites
are noted
 CROSS BITE : unilateral /
bilateral
 Skeletal or Dental cross bite ?

8. SAGITTAL (A-P)
 Involves assessment of
sagittal relationship
 Angle’s Class- I / II /
III
 Differention between
skeletal and dental
malocclusion

9. VERTICAL
 Malocclusions in vertical
plane are noted
 Anterior or posterior open
bite
 Anterior deep bite
 Posterior collapsed bite
 Skeletal / Dental ??

10. ADDITIONAL CHARACTERISTICS
Two things particularly help this more thorough
analysis:
 Esthetic line of occlusion.
 Rotational axes.

11. ESTHETIC LINE OF OCCLUSION
 In modern analysis,
another curved line
characterizing the
appearance of the
dentition is important
 Esthetic line of
occlusion, follows the
facial edges of the
maxillary anterior and
posterior teeth.

12. ROTATIONAL AXES
 In addition to relationship in the transverse, antero-
posterior and vertical planes of space used in traditional 3-
D analysis, rotations around axes perpendicular to three
planes also must be evaluated
 It’s a useful way to evaluate the relationship of the teeth to
the soft tissues that frame their display
 Pitch
 Roll
 Yaw

13. PITCH
 The vertical relationship of the teeth to the lips
& cheeks can be conventionally described as up-
down deviations around the antero-posterior
axes.
 Evaluated clinically & from cephalometric
radiographs.
ROLL
 Roll describes the vertical position of the teeth
when this is different on the right & left sides.
 Viewed as up-down deviations around the
transverse axes.
 It’s seen with lips relaxed and more clearly on
smile, in both frontal and oblique views.
YAW
 Rotation of the jaw or dentition to one side or
the other, around a vertical axes, produces a
skeletal or dental midline discrepancy.
 Viewed as left-right deviations around the
vertical axis.

15. METHOD OF SCORING
0- Ideal
1- Slight
2- Slight to Moderate
3- Moderate
4- Moderate to Severe
5- Severe