Cuspid

A cuspid, more commonly referred to as a canine tooth, is a single-cusped tooth positioned at the corner of each dental quadrant between the lateral incisor and the first premolar. Humans have four cuspids, designated as teeth numbers 6, 11, 22, and 27 in universal numbering. Cuspids are characterized by their prominent conical crown, which features a single pointed cusp tip designed for grasping and tearing food. These teeth possess the longest roots of any teeth in the human dentition, with root lengths that can exceed 30 millimeters in the maxilla. The strong root and surrounding alveolar bone make cuspids highly resistant to periodontal breakdown and among the last teeth lost in advanced periodontal disease, which gives them particular strategic value as abutments for fixed and removable prostheses.

Cuspids play a critical role in functional occlusion through a mechanism called canine guidance, in which the cuspids bear the primary contact during lateral excursive jaw movements, disengaging the posterior teeth and protecting them from damaging lateral forces. When cuspids are absent, impacted, or malpositioned, posterior teeth may experience accelerated wear and increased risk of fracture from unprotected lateral contacts. Maxillary cuspids are the most frequently impacted teeth after third molars, with palatal impaction occurring in approximately 2 percent of the population. Management of impacted cuspids typically involves a combined surgical and orthodontic approach in which the surgeon exposes the impacted tooth and bonds an orthodontic attachment, and the orthodontist then applies traction to guide the tooth into its proper position in the arch.

The treatment of impacted cuspids generates claims across both surgical and orthodontic categories. Surgical exposure of an impacted cuspid is reported under CDT codes D7280 for soft tissue exposure or D7283 when exposure includes bracket placement for orthodontic eruption. The orthodontic component is typically incorporated into the full treatment fee. Billing teams should confirm that the surgical and orthodontic codes are not bundled by the carrier and that appropriate documentation, including radiographic evidence of impaction and a written treatment plan, accompanies the preauthorization request. Practices that manage impacted cuspid cases benefit from clear coordination protocols between the surgeon and orthodontist to avoid duplicate billing and ensure timely claim submission for each phase of treatment.