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It is not sufficient to categorize orthodontic malocclusions on the basis of a classification of the teeth alone. The relationship with other craniofacial structures must also be taken into consideration.
Class I
Maxillary-Mandibular Dental Protrusion — teeth: This is an example of a dental malocclusion that may require the removal of teeth for correction.
Maxillary-Mandibular Dental Retrusion — teeth: This is an example of a dental malocclusion that may be treated with expansion rather than removing teeth.
Class II
Maxillary Dental Protrusion — teeth: This malocclusion may require the removal of teeth.
Mandibular Retrognathism — jaws: The lower jawbone has not grown as much as the upper jaw. This example of a Class II malocclusion demonstrates the need for early growth guidance.
Maxillary Dental Protrusion — teeth
Mandibular Retrognathism — jaws
These Classes of malocclusions are more difficult to treat due to the skeletal disharmony and may require orthognathic surgery in conjunction with orthodontic treatment.
Class III
Mandibular Dental Protrusion — teeth: The lower teeth are too far in front of the upper teeth. This malocclusion is treated with orthodontic procedures that may require the extraction of teeth due to the dental protrusion.
Mandibular Prognathism — jaws: The lower jawbone has outgrown the upper jaw. This malocclusion is more difficult to treat due to the skeletal disharmony and may require orthognathic surgery in conjunction with orthodontic treatment.
