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1. Class II, Division 1
Malocclusions
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2. -Class II, Div. 1 malocclusions are the most common
-The prominence of upper incisor are cause of concern
to the patient and parents and the risk of incisor
fracture is high.
Occlusal Features:
-Class II incisor relationship with proclination and an
increased overbite.
-The buccal segment is usually class II, cross bite and
scissors bite may occasionally be found.
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3. Skeletal Relationships:
-Skeletal pattern is class II
-Dento-alveolar compensation by proclination of
lower incisors
-Receding chin which gives a poor facial profile
-The lower facial height is generally average of
reduced.
-Some cases there may be rather high maxillary –
mandibular plane angles.
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4. Typical class II div. I cases showing dento-alveolar
compensation
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5. Facial Growth:
Maxillary mandibular plane angle
is low
Horizontal growth pattern
Maxillary mandibular plane angle
is high
Vertical growth patternwww.indiandentalacademy.com

6. Soft Tissues:
-Profile – convex
-Lips are grossly incompetent
-Chin receding
-Lip trap
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7. Treatment Objectives:
Major objectives of treatment are to relieve crowding
and irregularity of the teeth and to establish a stable
class I incisor relationship.
-A stable reduction in overjet and overbite.
Early mixed dentition stage
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8. A class II div. 1 treated by distal movement of the
upper buccal segments using an ‘en masse’ appliance
with no extractions in the lower arch
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9. Mild class II div. 1 with crowding treated by
extraction of four first premolars and an upper
removable appliance.
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10. Effects of anterior bite plane
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11. A mild class II with no crowding treated by extraction
of second premolars and fixed appliance.
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12. Intrusion of lower incisors
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13. A gummy smile for a good aesthetic result the upper
incisors would have to be intruded as well as being
retracted.
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14. A severe class II div. 1 incisor mal
relationship.
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15. Case -I
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16. Intra-oral Photographs
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17. Intra-oral Photographs
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18. Mid-treatment Photographs
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19. End of active treatment extra-oral photographs
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20. Mid-treatment Photographs
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21. End of active treatment Intra-oral photographs
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