Alan Henry Brook is a Professor at the University of Adelaide, School of Dentistry. He is a leading figure internationally in the application of Complexity Science, Network Science, and Modelling Influence on the development and functioning of the oral tissues. He has over 230 full publications and over 280 abstracts of presentations with some 6,100 citations. Clinically, this research has generated innovative diagnostic and treatment procedures for several oral conditions. This was combined with being Chief Executive Officer for a combined industry/university research unit. In 2005, Alan was awarded the highest level (Platinum) NHS Clinical Excellence Award. He has held Head of Department and Deanship roles at several Universities and was President of the European Commission Dental Education Advisory Committee. The major current and ongoing theme of his research relates to the development of the dentoalveolar complex from genotype to phenotype with an emphasis on the interactions between genetic, epigenetic, and environmental factors. In 2014, Alan was awarded a Higher Doctorate, DDSc, from the University of Adelaide based on an international assessment of his published research. Since then, his work on Complexity, Networks, and Models has developed with multicentre, multidisciplinary collaborators that Alan has initiated on "Hypodontia from genotype to phenotype" and "Tooth and dental arch variation interact within a multilayer complex interactive network".