Classification of malocclusion

To Determine of the Dental Orthognatic appearance especially on the children.

1. CLASSIFICATION OF MALOCCLUSION GLO ARBY D. ARGUELLES, DMD

2. CLASSIFICATION OF MALOCCLUSION Edward H. Angle Relationship of the MESIOBUCCAL CUSP of the MAXILLARY FIRST MOLAR and the BUCCAL GROOVE of the MANDIBULAR FIRST MOLAR.

3. NORMAL OCCLUSION The normal occlusion passes through: Central Fossa and along the cingula of Maxillary Teeth The buccal cusps and incisal edges of the mandibular teeth.

4. MALOCCLUSION Deviation from normal dentofacial and skeletal aspect which causes esthetic, function, and psychological problem.

5. CLASSIFICATION OF MALOCCLUSION CLASS I NEUTROOCCLUSION 70% of population. The mesiobuccal cusp of the maxillary first molar lines up with the buccal groove of the mandibular first molar. The maxillary central incisors overlap the mandibular incisors. The maxillary canine lies between the mandibular canine and first premolar.

6. CLASSIFICATION OF MALOCCLUSION CLASS II DISTOOCCLUSION Can also be referred to as retrognathism, or overbite. 25% of population. The mesiobuccal cusp of the maxillary first molar falls between the mandibular first molar and the second premolar. The lower jaw and chin may also appear small and withdrawn. Maxillary canine is mesial to mandibular canine.

7. Class II malocclusion types Class II division 1 malocclusion Distocclusion Overbite and overjet are excessive. Upper dental arch assumes a “V” shape w/c is responsible for the protrusion or labioversion of incisors. Associated with abnormal muscle function of the lip.

8. Class II malocclusion types Class 2 division 2 Exaggerated curve of spee . Supraversion of the mandibular incisors. Excessive lingual inclination of the max. central incisors. Excessive labioversion of the max. lateral incisors.

9. CLASSIFICATION OF MALOCCLUSION CLASS III MESIOOCCLUSION Less than 5% of the population. The mesiobuccal cusp of the maxillary first molar falls between the mandibular first molar and the second molar. The chin may be in a protrusive position. The maxillary canine is distal to the mandibular canine. Can also be referred to as a mesioclusion , prognathism, or underbite.

10. CLASSIFICATION OF MALOCCLUSION CLASS III Class III malocclusions are those in which the body of the mandible and its superimposed dental arch are in a mesial relationship to the skull base and maxilla. The overjet in a class I occlusion is 1–2 mm. In a class III malocclusion, the overjet is 0 mm (edge-to-edge bite) or negative. (The mandibular incisors are forward relative to the maxillary incisors.)

11. CLASSIFICATION OF MALOCCLUSION Pseudo Class III malocclusion: Describes a situation in which the patient adopts a jaw position upon closure which is forward to normal. Typically, the pseudo class III patient presents with an edge-to-edge bite. In order to avoid interference and achieve maximal intercuspation, the patient slides his/her jaw forward. This patient has the ability to bring the mandible back without strain so that the mandibular incisors touch the maxillary incisors. This type is therefore a milder form of the class III malocclusion and more amenable to conservative orthodontic treatment than the “true” class III malocclusion which often requires surgical correction.

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