Influence of the cranial base flexion on Class I, II and III malocclusions: a systematic review

Influence of the cranial base flexion on Class I, II and III malocclusions: a systematic review

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ABSTRACT Objective: The aim of this study was to perform a systematic review on the morphological characteristics of the skull base (flexion, anterior length and posterior length) and the concomitant development of malocclusions, by comparing differences in dimorphism, ethnicity and age.Methods: The articles were selected by means of electronic search on BBO, MEDLINE and LILACS databases from 1966 to 2016.A qualitative evaluation of the methodologies used on LADIES TOPS T-SHIRT / JERSEY the articles was also performed.Results: Although the literature on this topic is abundant, only 16 articles were selected for the present systematic review.The cranial base angle itself does not seem to play a significant role in the development of malocclusions.

In fact, the cranial base angle is relatively stable at the ages of 5 to 15 years.Conclusions: A more obtuse angle at the skull base, in association or not with a greater anterior length of the cranial base, can contribute to the development of Class II division 1 malocclusions.On the other hand, a more acute angle at the skull base can contribute to ROMPER a more anterior positioning of the mandible and to the development of Class III malocclusions.