classification of malocclusion
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Classification of malocclusion
• Teeth malposition• Arch relationship abnormality
- Dentoalveolar relationship- Skeletal relationship
Dr shabeel pnhttp://hi-dentfinishingschool.blogspot.com/
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Teeth malposition:” Version”
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Teeth malposition: transpostion
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Teeth malposition: ectopic eruption
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Classification of malocclusion
Antrio-posterior arch relationship:• Molar relationship ( Angle’s Classification)• Molar relationship (Andrew’s
Classification)• Incisor relationship( British system).
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Classification of malocclusion
• Antro-posterior (molar classification)Class I: The mesio-buccal cusp of the upper first permanent molar occludes in the buccal groove of the lower first permanent molar.
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Classification of malocclusion
• Antro-posterior (molar classification)Class II: The mesio-buccal cusp of the upper first permanent molar occludes anterior to the buccal groove of the lower first permanent molar.
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Classification of malocclusion
• Antro-posterior (molar classification)Class III: The mesio-buccal cusp of the upper first permanent molar occludes posterior to the buccal groove of the lower first permanent molar.
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Classification of malocclusion
• Antro-posterior (incisor classification)Class I: The incisal edge of the lower incisors bite on the cingulum of the upper incisors
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Classification of malocclusion
• Antro-posterior (incisor classification)Class II/1: The incisal edges of the lower incisors bite behind the cingulum of the upper incisors with the upper incisors proclined
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Classification of malocclusion
• Antro-posterior (incisor classification)Class II/2: The incisal edges of the lower incisors bite behind the cingulum of the upper incisors with the upper incisors retroclined
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Classification of malocclusion
• Vertical Classification:Normally the vertical overlap between upper and lower incisors when the teeth are in maximum intercuspation is about one third of the lower incisors
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Normal overbite
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Classification of malocclusion
• Vertical Classification:Open bite: The lack of vertical overlap between upper and lower incisors when the teeth are in maximum intercuspation.
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Reduced overbite
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Classification of malocclusion
• Vertical Classification:deep bite: excessive vertical overlap between upper and lower incisors when the teeth are in maximum intercuspation.
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Deep overbite
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Classification of malocclusion
• Transverse Classification:cross bite: The lower molars overlap the upper molars.
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Classification of malocclusion
• Transverse Classification:scissor bite: The lower molars bite completely lingual to the upper molars.
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scissor bite
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Skeletal Classification
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Skeletal Classification
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Skeletal Classification