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Underbite

This is a bite condition in which the lower teeth protrude further than the upper teeth, also known as an "underbite" or "mandibular prognathism."

[Case] 9-year-old underbite, phase I treatment

BEFORE

AFTER

Chief Complaint

My lower front teeth are protruding further than my upper front teeth, making it difficult to chew properly.

Diagnosis

Anterior crossbite with lingual inclination of maxillary anterior teeth

age

9 years and 4 months

Main equipment used in treatment

Up and down expansion floor device

Tooth extraction site

none

Duration of treatment

1 year

Estimated treatment costs

550,000 yen (tax included)

Risks and Side Effects

Pain, root resorption, loss of vitality, gingival recession, relapse after treatment

Customer Requests

I want to fix the bite of my front teeth. My face also has a tendency to be underbite, so I want to fix it if possible.

Omotesando Sakurai Orthodontic Clinic's Proposal

Because the upper front teeth were tilted inward, the front teeth were biting in the wrong direction and the lower jaw was protruding forward, so we proposed expanding the upper jaw forward and reconstructing the occlusion so that the lower jaw would bite in the correct position.

In addition, because it is expected that there will be a shortage of space for the eruption of permanent teeth in both the upper and lower jaws in the future, we also proposed lateral expansion of both the upper and lower jaws. Furthermore, we will observe the future replacement of permanent teeth and consider transitioning to two-stage treatment at an appropriate time.

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