SUMMARY Whatever our origins, we are all directly linked by our common ancestors. The brief period that separated the birth of different populations of Homo sapiens that inhabit the Earth explains the homogeneity of the craniofacial architecture of our species. However, some differences to the face show significant interpopulational variations. This is true in the case of dental maturity and the position of the lower incisors , two particularly important factors that mold our orthodontic analysis. This article proposes to do a synthesis of the interpopulational variability of these two parameters.

The fundamental basics of patient care, during orthognathic surgery, have been well known for several years. This therapeutic treatment requires cooperation between orthodontist and surgeon from the orthodontic preparation stage until the retention period. Over the past few years, the combined surgical and orthodontic protocols have undergone both an important technical and conceptual evolution, making them easier to tolerate with more stable results. The main explanation for this is more systematic consideration of the functional parameters involved in the treatment, leading to multidisciplinary care.We found it interesting, in 2016, to update on this combined surgical and orthodontic therapeutic strategy.