Figure 6: An overview of the mucosal epithelium influence on root morphology and root resorption. Drawings on the left illustrate abnormal root resorption in the primary dentition (upper), abnormal root morphology in the permanent dentition (middle), and deviant crown and root morphology in the permanent incisors (lower). These drawings indicate factors, which in combination predict root resorption in connection with orthodontic appliance. Similar conditions are illustrated in the corresponding radiographs. The right column contains a photo and two radiographs from a patient with tuberous sclerosis with skin afflictions (upper) and cervical root resorptions (middle and lower)