malocclusion in general

Classification Of Malocclusion :

1 ) Dental Variation

2 ) Skeletal Variation

Dental Variation :

1 ) Intra Arch Variation

2 ) Inter Arch Variation

Intra Arch Variation :

1 ) Anomalies in Tooth Position

2 ) Impaction

3 ) Crowding

4 ) Spacing

5 ) Midline Diastema

Inter Arch Variation :

1 ) Incisal Inter Arch Variation

2 ) Posterior Inter Arch Variation

Skeletal Variation :

1 ) Anterio-Posterior Relationship

2 ) Vertical Relationship

3 ) Transverse Relationship

Inter Arch Variation : Incisal Inter Arch Variation

1 ) Anterio-Posterior relationship :

Incisal Relationship :

-Class i

-Class ii division 1

-Class ii division 2

-Class iii

2 ) Vertical Relationship :

A ) Increased Overbite :

-Complete

-Incomplete

-Traumatic

B ) Anterior Open Bite

C ) Reduced Overbite

3 ) Transverse Relationship :

-Center Line Discrepancy

Inter Arch Variation : Posterior Inter Arch Variation

1 ) Anterio-Posterior Relationship :

A ) Angle’s Relationship : 

-Class i

-Class ii

-Class iii

B ) Canine Relationship : 

-Class i

-Class ii

-Class iii

2 ) Vertical Relationship :

-Lateral Open Bite

3 ) Transverse Relationship :

-Buccal Cross Bite

- Lingual Cross Bite

Skeletal Variation :

1 ) Anterio-Posterior Relationship :

A ) Class i skeletal relationship – ANB Angle : ( 2-4 )degree

B ) Class ii skeletal relationship – ANB Angle : > 4 degree

C ) Class iii skeletal relationship – ANB Angle : < 2 degree 

2 ) Vertical Relationship : 

A ) Maxillary Mandibular Plane Angle (MMPA) :

-Average : (27+/-5) degree 

-Open bite : 32 degree 

-Deep Bite : 22 degree

B ) Lower Facial Height ( Subnasale – Menton ) : 

-Average : 55% 

-Increased : > 55%

-Reduced : < 55%

3 ) Transverse Relationship : 

A ) Maxilla :

-Wide Maxilla – Lingual Crossbite

-Narrow Maxilla – Buccal Crossbite

B ) Mandible :

-Wide Mandible – Buccal Crossbite

-Narrow Mandible – Lingual Crossbite

Indication For Orthodontic Treatment :

1 ) Aesthetic

2 ) Function

3 ) Prosthetic

4 ) Prophylactic

Orthodontic Treatment :

1 ) Removable Appliance

2 ) Fixed Appliances

3) Functional Appliances

4 ) Orthognathic Surgery