Median mandibular cyst

A median mandibular cyst is a type of cyst that occurs in the midline of the mandible, thought to be created by proliferation and cystic degeneration of resting epithelial tissue that is left trapped within the substance of the bone during embryologic fusion of the two halves of the mandible, along the plane of fusion later termed the symphysis menti. A ture median mandibular cyst would therefore be classified as a non-odontogenic, fissural cyst. The existence of this lesion as a unique clinical entity is controversial,^[1] and some reported cases may have represented misdiagnosed odontogenic cysts,^[2] which are by far the most common type of intrabony cyst occurring in the jaws. It has also been suggested that the mandible develops as a bilobed proliferation of mesenchyme connected with a central isthmus. Therefore, it is unlikely that epithelial tissue would become trapped as there is no ectoderm separating the lobes in the first instance.^[1]

References

1 2 Bouquot, Brad W. Neville , Douglas D. Damm, Carl M. Allen, Jerry E. (2002). Oral & maxillofacial pathology (2. ed.). Philadelphia: W.B. Saunders. pp. 30–31. ISBN 0-7216-9003-3.
↑ Gardner, DG (February 1988). "An evaluation of reported cases of median mandibular cysts.". Oral surgery, oral medicine, and oral pathology. 65 (2): 208–13. doi:10.1016/0030-4220(88)90167-3. PMID 3278266.

Oral and maxillofacial pathology (K00–K06, K11–K14, 520–525, 527–529)

Lips

Cheilitis Actinic Angular Plasma cell Cleft lip Congenital lip pit Eclabium Herpes labialis Macrocheilia Microcheilia Nasolabial cyst Sun poisoning Trumpeter's wart

Tongue

Ankyloglossia Black hairy tongue Caviar tongue Crenated tongue Cunnilingus tongue Fissured tongue Foliate papillitis Glossitis Geographic tongue Median rhomboid glossitis Transient lingual papillitis Glossoptosis Hypoglossia Lingual thyroid Macroglossia Microglossia Rhabdomyoma

Palate

Bednar's aphthae Cleft palate High-arched palate Palatal cysts of the newborn Inflammatory papillary hyperplasia Stomatitis nicotina Torus palatinus

Oral mucosa - Lining of mouth

Teeth (pulp, dentin, enamel)

Periodontium (gingiva, periodontal ligament, cementum, alveolus) - Gums and tooth-supporting structures

Periapaical, mandibular and maxillary hard tissues - Bones of jaws

Temporomandibular joints, muscles of mastication and malocclusions - Jaw joints, chewing muscles and bite abnormalities

Bruxism Condylar resorption Mandibular dislocation Malocclusion Crossbite Open bite Overbite Overjet Prognathia Retrognathia Temporomandibular joint dysfunction

Salivary glands

Orofacial soft tissues - Soft tissues around the mouth

Actinomycosis Angioedema Basal cell carcinoma Cutaneous sinus of dental origin Cystic hygroma Gnathophyma Ludwig's angina Macrostomia Melkersson–Rosenthal syndrome Microstomia Noma Oral Crohn's disease Orofacial granulomatosis Perioral dermatitis Pyostomatitis vegetans

Other

Eagle syndrome Hemifacial hypertrophy Facial hemiatrophy Oral manifestations of systemic disease

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