COMPROMISED
When a posterior tooth, such as
a permanent mandibular first molar, is extracted and
is not replaced, deterioration of the entire bite may
occur:
1. Adjaccent teeth drift into
the extration space; contacts between these teeth are
lost; spaces develop, and food becomes lodges between
the teeth.
2. The mandibular dentition
collapses; a deep overbite occurs; proper contact with
the maxillary teeth is lost, and the mandibular
incisors impinge on the palatal mucosa.
3. The opposing maxillary molar
overerupts and extrudes into the extraction space; the
contacts between adjaccent maxillary teeth are lost,
and food becomes lodged between these teeth.
4. These conditons can result
in periodontal disease and further loss of teeth.
5. With the occlusion now
totally disrupted, cusp interference may create a
functional displacement of the mandible, resulting in
possible involvement of the temporomandibular joint.
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IDEAL OCCLUSION
Lateral View
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Anterior View
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COMPROMISED DENTITION
Lateral View
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Anterior View
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