Fig. 4From: Application of 3D tooth model for monitoring of implant space and inter-root distance without radiographs: a proof of concept studyGeneration of a tooth model with expected root position using the tooth model at pretreatment and intraoral scan at mid-treatment. a Intraoral scan at mid-treatment was registered onto the individual tooth model at pretreatment. b On the software program, the measured inter-root distance was 8.6 mm at the mid-root and 11.6 mm at the apexBack to article page