Hypercementosis
Pronunciation: hy-per-se-men-TOH-sis
An abnormal thickening of the cementum on a tooth root, appearing radiographically as a bulbous root outline with preserved periodontal ligament space.
Full Definition
Hypercementosis is characterized by excessive deposition of secondary cementum on the root surface, most commonly affecting the apical third of the root. Radiographically, the root appears enlarged and club-shaped, yet the periodontal ligament space and lamina dura remain intact—an important diagnostic feature that helps distinguish it from a periapical lesion or condensing osteitis. It can be idiopathic, associated with systemic conditions such as Paget's disease, or secondary to chronic periapical inflammation. Editors should note that the term is one word (hypercementosis) and should not be rendered as 'hyper-cementosis' or 'hyper cementosis'. Its correct identification in reports has clinical implications for tooth extraction planning.
Usage
Usage note: Always written as one unhyphenated word. Distinguish from 'cementoma,' which represents a distinct neoplastic entity.
In Context
- "Hypercementosis was noted at the apex of the maxillary second premolar, presenting as a bulbous radiopaque root outline with an intact periodontal ligament space." — Oral radiology diagnostic report
- "The author incorrectly hyphenated the term as 'hyper-cementosis'; the preferred form is the single unhyphenated word." — Editorial style review