Anomalies of Tooth Structure
Attrition

Attrition of the tooth structure is the result of tooth-to-tooth contact during mastication and occlusion.^7,16 This condition affects the incisal and occlusal surfaces of the teeth and can be exacerbated by contact or ingestion of abrasive materials, abrasive foods, and behaviors like teeth grinding or bruxism.^7,9,16 Attrition is quite prevalent in adults and tends to be more severe in men.⁹ Both clinical and radiographic manifestations can be observed. Clinically, the incisal edges demonstrate broadening and wear facets will be evident on the cusps and ridge anatomy of posterior teeth (Figures 44‑45).^7,9,16 The dentin can become exposed and the wear facets, which appear flat and shiny, can deepen over time, and become stained.⁹ Radiographically, the teeth will appear flattened and shorter coronally with reduction in the size of the pulp chambers and canals due to deposition of secondary dentin.^9,16 Ultimately, the pulpal structures can become completely obliterated.^9,16