This is the first clinical reference to a clearly and concisely lay out all the commonly used and rarer classification systems for facial plastic surgery, explanations as to their use. Coverage includes the staging of oral and cutaneous cancers, types of cleft lips and palates, and severity of facial injuries, among others. Each classification system is accompanied by an explanation of its use and a citation of the original article in the literature, and will be evaluated with respect to its use in research, diagnosis, treatment, prognosis and research. Each will also include brief commentaries by experts in the respective field, an academic surgeon and a community surgeon. All of the major fields within facial plastic surgery are incorporated and, within each, anything up to 30 classifications are included.