Fig. 2From: Influence of Invisalign treatment with interproximal enamel reduction (IER) on bone volume for adult crowding: a retrospective three-dimensional cone beam computed tomography studya+b Two-dimensional diagram showing the measurement points. a Sketch, Tooth 11 as an example. ECB enamel–cement boundary. Two-dimensional diagram showing the measurement points and distances for measuring bone height. b Sketch, Tooth 11 as an example. ECB enamel–cement boundaryBack to article page