María José Viñas1, Verónica Pie de Hierro2, Josep M Ustrell-Torrent3. 1. Department of Stomatology IV, Complutense University of Madrid, Madrid, Oral Health and Masticatory System Group (Bellvitge Biomedical Research Institute) IDIBELL, School of Dentistry, L'Hospitalet, Spain. Electronic address: mjvinas@odon.ucm.es. 2. Department of Stomatology, University of the Basque Country, Spain. 3. Vice Dean Faculty of Medicine and Health Sciences, University of Barcelona and Oral Health and Masticatory System Group (Bellvitge Biomedical Research Institute) IDIBELL, School of Dentistry, L'Hospitalet, Spain.
Abstract
INTRODUCTION: Superimposition of digital models may be performed to assess tooth movement in three dimensions. Detailed analysis of changes in tooth position after treatment may be achieved by this method. AIM: This article describes the method of superimposing digital models with a clinical case. It emphasizes the difficult procedure of superimposing 3D models in the lower arch. A methodology for superimposing mandibular models acquired with a structured light 3D scanner is discussed. CONCLUSION: Superimposition of digital models is useful to analyse tooth movement in the three planes of space, presenting advantages over the method of cephalogram superimposition. It seems feasible to superimpose digital models in the lower arch in patients without growth by using a coordinate system based on the palatal rugae and occlusion. The described method aims to advance the difficult procedure of superimposing digital models in the mandibular arch, but further research is nonetheless required in this field.
INTRODUCTION: Superimposition of digital models may be performed to assess tooth movement in three dimensions. Detailed analysis of changes in tooth position after treatment may be achieved by this method. AIM: This article describes the method of superimposing digital models with a clinical case. It emphasizes the difficult procedure of superimposing 3D models in the lower arch. A methodology for superimposing mandibular models acquired with a structured light 3D scanner is discussed. CONCLUSION: Superimposition of digital models is useful to analyse tooth movement in the three planes of space, presenting advantages over the method of cephalogram superimposition. It seems feasible to superimpose digital models in the lower arch in patients without growth by using a coordinate system based on the palatal rugae and occlusion. The described method aims to advance the difficult procedure of superimposing digital models in the mandibular arch, but further research is nonetheless required in this field.