The following are among the most common orthodontic problems treated by Dr. Okubo


Crowding of teeth is where there is insufficient
room for the normal complement of adult teeth.

Open Bite

Openbite is when the upper and lower front teeth do not overlap. Openbite may be caused by unwanted habits, such as tongue thrusting and thumb sucking.

Dental Midlines not Aligned

Dental Midline is a term that refers to the midsagittal
line of maxillary and mandibular dental arches possessing
teeth of ideal size, shape and position, when situated in
maximum intercuspation. Each arch also possesses its own
midline, which can be used to refer to the location of contact
between the mesial surfaces of the central incisors.


Overbite refers to the extent of vertical overlap
of the maxillary central incisors over the mandibular
central incisors. Overbite does not refer to a lower jaw
being too far behind the upper jaw (retrognathia)
or a misalignment of the teeth. It is measured relative
to the incisal ridges.

Upper Front Tooth Protrusion

Upper front teeth that protrude beyond
normal contact with the lower front teeth are
prone to injury, often indicate a poor bite of the
back teeth (molars), and may indicate an unevenness
in jaw growth.  Thumb and finger sucking habits can
also cause a protrusion of the upper incisor teeth.


Crossbite can involve a single tooth or a group
of teeth. It can be classified in anterior or posterior
and bilateral or unilateral.

An anterior cross bite can not be referred to as
negative overjet. This condition is typical of class
III skeletal relations (prognathism).

Posterior crossbite is often correlated to
anarrow maxilla and upper dental arch. A
posterior cross-bite can be unilateral or bilateral.
Unilateral cross-bite often determines a lateral
shift of the mandibular position, which can
become structural if left untreated for a long
time during growth, leading to skeletal asymmetries.

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