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• W2060918300 abstract "The following can be stated as a short summary of my observations. Around the crowns of developing teeth there is a vessel ring which, in the course of development, is transformed into an interdental meshwork. Obviously, the branch entering through the apex into the pulp is derived from this meshwork. The extraosseous blood supply of the mandible is provided by a branch of the masseteric artery, which is given off at the base of the coronoid process. This branch is almost invariably present. The coronoid process of the collum is provided by small branches of the internal maxillary artery. The anastomoses between these osseous branches and the mental artery are visible on the films also. Besides the extraosseous vessels, also branches of the external maxillary artery pass to the inner aspect of the angle of the mandible. The outer surface of the angle is supplied by the transverse facial artery or, occasionally, by direct branches of the external carotid. The part of the mandible corresponding to the trigonum retromandibulare is likely to receive blood from the mylohyoid branch. These accessory vessels cannot be demonstrated in all cases or all ages. It is their very presence and their developmental degree by which the ultimate construction of the jaws is determined. From a clinical point of view, the varieties derived from these types of blood supply are of importance. These factors may account for the fact that in a case of osteomyelitis of the mandible the lesion undoubtedly is associated with the main intraosseous artery. The mandibular branch medial to the sequestrum does not undergo necrosis, and trophic disorders do not invariably ensue in the teeth medial to the site of osteomyelitis. A decisive role in such cases is also played by the mental artery which, through its anastomoses with the arteries enumerated, is capable of securing the blood supply of the affected section of the mandible. Circulation is different in the cortex and the spongiosa. In the spongiosa the vessels pass between the trabeculae at about equal distances. In the cortex the vessels follow the Haversian bone meshwork and Volkmann's canal system. They are connected with the periosteum and the bone marrow alike. The arteries are everywhere accompanied by veins. Essentially, the blood supply of the jaws has two sources. Large or small vessels perforate the cortex and divide in the bone marrow. These vessels provide the spongiosa and the marrow. The other group furnishes blood chiefly to the cortex. They are derived from periosteal arteries and enter the bone substance as arterioles or prearterioles through the opening of Volkmann's canals facing the periosteum. This double blood supply is not separated, as the collaterals form anastomoses between them. The distribution of the two arterial systems within the bone depends on the bone structure. Particular importance is to be attributed to the ratio of the cortex to the spongiosa, the size of the marrow spaces, and the increased blood supply of the articular processes (Weinmann and Sicher5)." @default.
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• W2060918300 date "1949-01-01" @default.
• W2060918300 modified "2023-10-10" @default.
• W2060918300 title "Detailed roentgenologic examination of the blood supply in the jaws and teeth by applying radiopaque solutions" @default.
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• W2060918300 doi "https://doi.org/10.1016/0030-4220(49)90121-8" @default.
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