Hypercementosis

Hypercementosis is overproduction or increased proliferation of cementum on the tooth root (Figure 47). This can result in mild to marked misshaping of the tooth root with a bulbous-like or lobular appearance.^9,10 The excess cementum will appear slightly less radiopaque than the dentin with the lamina dura and periodontal ligament space evident around the excess cementum.⁹ Usually the additional cementum demonstrates a smooth outline, but it can also appear irregular.^9,10 The exact cause is unknown but hypercementosis may be a reaction to inflammation or loss of function of a supraerupted tooth due to absence of an opposing tooth.^8-10 Hypercementosis is known to be associated with fractured teeth or teeth in heavy occlusion.^9,10

Figure 47A and 47B.

Figure 47A and 47B.

Periapical radiographs of maxillary right (A) and mandibular left (B) posterior teeth demonstrating hypercementosis.