A new classification of maxillary defect brown
A very specific and technical topic!
The classification of maxillary defects is a crucial aspect in oral and maxillofacial surgery, as it helps surgeons to plan and execute reconstructive procedures effectively. The classification system used to categorize maxillary defects is based on the extent and location of the defect, as well as the surrounding tissue involvement.
The most widely used classification system for maxillary defects is the "Brown classification" (1966), which is a modification of the earlier "Kleinert classification" (1957). The Brown classification system categorizes maxillary defects into four types based on the extent of the defect and the involvement of surrounding tissues:
Type I:
- Small defects involving only the alveolar process (the bony ridge that supports the teeth)
- No involvement of the maxillary sinus or surrounding soft tissues
Type II:
- Medium-sized defects involving the alveolar process and the maxillary sinus
- Some involvement of the surrounding soft tissues, such as the cheek or nasal cavity
Type III:
- Large defects involving the entire maxillary alveolar process, the maxillary sinus, and surrounding soft tissues
- Significant involvement of the nasal cavity, cheek, or orbital floor
Type IV:
- Total maxillectomy defects, where the entire maxilla (upper jawbone) is resected
- Significant involvement of surrounding tissues, including the nasal cavity, cheek, orbital floor, and palate
This classification system helps surgeons to plan and execute reconstructive procedures, such as bone grafting, soft tissue reconstruction, and prosthetic rehabilitation, to restore the patient's oral function and aesthetics.
It's worth noting that while the Brown classification system is widely used, there are other classification systems and modifications that have been proposed over the years. However, the Brown classification remains the most widely accepted and commonly used system in the field of oral and maxillofacial surgery.