Citation, DOI & article data
The oral cavity includes the lips anteriorly. For purposes of staging oral carcinoma according to the 8th edition of the AJCC TNM staging system, the oral cavity starts at the portion of the lip that contacts the opposed lip (wet mucosa) and excludes the dry vermilion lip.
The oral vestibule is the space between the labial and buccal mucosa anteriorly/laterally and posteriorly/medially the teeth and gingiva.
The oropharyngeal isthmus (fauces) is the relatively constricted opening between the oral cavity and the oropharynx, but is considered to be part of the oropharynx.
The oral cavity is divided into a number of subsites both anatomically and for the purposes of cancer staging:
- mucosal lip
- buccal mucosa
- upper alveolar ridge (mucosa overlying alveolar process of maxilla)
- lower alveolar ridge (mucosa overlying alveolar process of mandible)
- retromolar gingiva (retromolar trigone)
- floor of mouth
- anterior two-thirds of the tongue (oral tongue; posterior third is part of the oropharynx)
- hard palate
- 1. Oral Cancer. J. w. Werning, John W. Fleming (Editor). Thieme Medical Publishers ISBN:1588903095 (find it at amazon.com)
- 2. Trotta BM, Pease CS, Rasamny JJ et-al. Oral cavity and oropharyngeal squamous cell cancer: key imaging findings for staging and treatment planning. Radiographics. 2011;31 (2): 339-54. Radiographics (full text) - doi:10.1148/rg.312105107 - Pubmed citation
- 3. Meesa IR, Srinivasan A. Imaging of the oral cavity. Radiol. Clin. North Am. 2015;53 (1): 99-114. doi:10.1016/j.rcl.2014.09.003 - Pubmed citation
- 4. Law CP, Chandra RV, Hoang JK et-al. Imaging the oral cavity: key concepts for the radiologist. Br J Radiol. 2011;84 (1006): 944-57. Br J Radiol (full text) - doi:10.1259/bjr/70520972 - Free text at pubmed - Pubmed citation