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Anomalies of Tooth Structure

Course Number: 651

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.7,9,16Attrition 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

Figure 45.

Periapical radiograph of posterior teeth with attrition.

Periapical radiograph of anterior teeth with attrition

Figure 44.

Periapical radiograph of anterior teeth with attrition.