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The important decision whether to
extract teeth in a particular
case is often facilitated by understanding the anticipated
developmental patterns of the patient in question. For example,
it is not unusual to have a situation whereby extractions can be
avoided if a good head-gear result is achieved. This would be
the true in a Class II skeletal case where good downward and
forward skeletal growth of the mandible would achieve a Class I
molar relationship. But will this patient express this much growth?
GrowthTek provides the clinician with this information by
identifying the individualized maturational profile of the
patient and projecting future growth patterns. The important
percentage of total maxillary and mandibular growth values vary
considerably relative to the 23 maturational stages ( SMIs ) and
the 14 maturational levels, The time periods between all of the
maturational stages and the time of growth termination also vary
relative to the maturational levels.
For example, an advanced maturer demonstrates significantly less
mandibular growth after SMI 7 as compared to a delayed maturer.
Even if these two individuals demonstrated the same maturational
stage, the delayed maturer would undoubtedly benefit more from
the head-gear since delayed maturers try to 'catch-up' and express
considerably more mandibular growth. In this situation, depending
on the degree of skeletal discrepancy, the clinician may choose to
initially have teeth extracted for the advanced maturer and choose
to initiate head-gear treatment for the delayed maturer.
Every growing individual demonstrates unique maturational patterns
of development. The challenge to the clinician is to understand how
the patient is developing and to apply this information to the
process of diagnosis and treatment planning.
It is very important in growth related problems for the clinician
to retake a hand-wrist film just prior to the retention phase of
treatment. It can usually be assumed that the growing individual
will continue to express the same basic growth patterns that were
detected before active treatment was initiated.
If the patient is going to continue growing during the retention
phase of treatment, then it is clearly advisable to continue with
head-gear treatment during retention. This decision depends on
the maturational age of the patient at that point in time and the
amounts of expected future maxillary and mandibular growth
expected. In this type of situation, skeletal and dental relapse
can be significantly reduced or eliminated. The maturational
report provided by GrowthTek can assist in making this type of
Note: Please refer to the other questions in this 'Clinical Applications'
section of this web site for specific clinical information regarding
maturational timing of treatment. Also refer to the 'Background
Information' section of this web site for additional information.
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