Natural Head Position and Its Significance

Natural Head Position (NHP) has been defined by Broca as ‘when man is standing and his visual axis ishorizontal, he is in the natural position’ (as cited in Solow and Talgren in 1971) [1]. NHP was subsequently introduced into Orthodontics by Downs [2] in 1956 and Moorrees [3] in 1958. Each individual tends to orient his or her head in space so that it returns to a reproducible position when he or she looks