Development and comparison of a individualized orthodontic arches construction method and a traditional method for choosing pre-manufactured orthodontic arches

Antonio José BORIN NETO, Rodrigo CECANHO, Helena Cristina Francisco Pereira da SILVA

Introduction: The existence of exceptional anatomic dental arches justifi es this work. Aim: It was proposed to show a orthodontic arches construction method that follow the individual anatomy of each patient, developed without any previous constructed diagram. Methods: Braces or molar tubes were bonded on 20 inferior natural cast models. With the aid of a digital paquimeter associated to an apparatus that positioned the occlusal planes parallel to the fl oor, the distance between the cuspid tip and the center of the slot of the brace and tube were measured. Impressions of the cuspids were made on a wax blade and the distance previously obtained were used to made a new conjunct of points vestibularly to the fi rst marked points. These new points served as references to the construction of the individual orthodontic arch. Results and conclusion: The new method was named “arcogram” and it was compared to the Tru-arch pre-conformed arches, showing better adaptation to the arches anatomy.

Keywords: Diagram. Dental arch. Arch anatomy.

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