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How is the timing of future maxillary and mandibular growth 
                                 related to maturational age?




                The time between each maturational stage ( SMI ) differs
                    relative to each combination of SMI ( total of 23 ) and each
                    maturational level subgroup ( total of 14 ).  The duration of
                    adolescence relative to the maturation level is slightly longer 
                    with girls.  Identifying only the stage ( SMI ) is inadequate  
                    for growth estimation.  The level of maturational development
                    ( advanced vs. average vs. delayed ) is also required. 

                    As seen in the following conceptual chart, advanced maturers take 
                     significantly less time to develop during the rapidly accelerating
                     ( SMI 1-3 ) and very high velocity ( SMI 4-7 ) periods of 
                     development as compared to average maturers and particularly
                     when compared to delayed maturers.
                    
                    

                During the later period of adolescence ( SMI 8-11 ) when
                   facial growth velocity is decreasing, the reverse is demonstrated.
                   Delayed maturers take less time to pass through this developmental
                   period when compared to average maturers and particularly when 
                   compared to advanced maturers.  Advanced maturers are rapidly
                   becoming 'burnt out' and exhibit little incremental growth.  This is
                   especially true in the maxilla, since the maxilla demonstrates a
                   greater percentage of total completed growth than the mandible
                   during late adolescence.

                 

                
                All of the above factors vary relative to the 23 stages and 
                   14 levels of maturation. The GrowthTek Patient Report                 
                   evaluates the specific developmental factors regarding your 

                patient's unique maturational profile.

            Note: refer to the 'Clinical Applications' section of this web site
                            for pertinent information regarding rational timing of treatment
                            relative to growth velocity.

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