Risk Factors and Surgical Refinements of Postresective Mandibular Reconstruction: A Retrospective Study

Figure 4

The CAT classification system classifies segmental mandibular defects. “C” refers to defects in the condylar head of the mandible, “A” refers to defects in the mandibular angle, and “T” refers to defects in the mental tubercle. For example, resection of the mandibular angle is classified as “A,” resection of the condylar head and mandibular angle is classified as “CA,” resection of the entire hemimandible is classified as “CAT,” and resection of the mandibular angle and bilateral mental tubercle is classified as “ATT.” In addition, the term “body” is used when only the mandibular body is resected, but the mandibular angle and the mental tubercle are preserved. Similarly, the term “neck” is used when only the mandibular ramus is resected, but the condylar head and the mandibular angle are preserved.