Surgical Orthodontic Treatment of an Impacted Canine in the Presence of Dens Invaginatus and Follicular Cyst

Table 1

I.	The invagination of the ameloblastic line is minimal, confined within the crown of the tooth, and does not exceed the cementoenamel junction.
II.	Characterised by the invagination extending apically beyond the cementoenamel junction, where a connection between the invagination and the pulp is possible.
III.a	The invagination extends through the root and communicates laterally with the periodontal ligament space through a pseudoforamen. There is usually no communication with the pulp, which lies compressed within the root.
III.b	The invagination extends through the root and communicates with the periodontal ligament at the apical foramen. There is usually no communication with the pulp [12].