Fig. 1From: Influence of sagittal root positions on the stress distribution around custom-made root-analogue implants: a three-dimensional finite element analysisModels of RAIs in different sagittal root positions of the maxillary central incisor. (Class I: the root is positioned against the labial cortical plate. Class II: the root is centered in the middle of the alveolar housing without engaging either the labial or the palatal cortical plates at the apical third of the root. Class III: the root is positioned against the palatal cortical plate.)Back to article page