[Salivary imprints on the mandible. The sign of lordosis of the ramus (author's transl)].
All of the principal salivary glands are in contact with the membranous mandible, in the form of contiguous relationships which develop and disappear respectively at the time of phylogenesis and ontogenesis of the first branchial arch. A contrast must also be drawn concerning the static relations between the submaxillary and sublingual glands and the inner aspect of the horizontal branch and the dynamic relations between the posterior edge of the ramus and the parotid gland ensured by the inter-mandibulo-parotid sliding space. In this perspective, the physiological slope of the posterior border of the ramus is certainly of parotid origin. This slope may be exaggerated in the presence of a parotid tumour, forming the indirect radiological sign of sagittal lordosis of the ramus, sometimes associated with a certain degree of frontal scoliosis in the case of a tumour with pharyngeal prolongation. Once again in this perspective, the inter-mandibulo-parotid sliding space makes for easy separation of the anterior parotid aponeurosis of the mandible and of its muscular sling.
D006801:Humans; D008334:Mandible / Q000033:anatomy & histology* / Q000196:embryology; D010802:Phylogeny; D012469:Salivary Glands / Q000033:anatomy & histology* / Q000196:embryology
Les reliefs salivaires de la mandibule. Le signe de la lordose du ramus.