[Anatomical variations of the nervus XXXX and their importance for the practice (author's transl)].

@entity129 @entity1 @entity8810 @entity2520
The authors have studied the anatomic variations of the @entity129 (N. @entity2520 ) in 18 @entity1 heads. The mandibular nerve being free by medial abord. At about half of the studied cases the M. pterygoideus medialis presents a widened insertion extending on the posterior border of the Ramus mandibulae. Before entering into the mandibular channel the @entity129 separated from the next elements by expansion of "apon  vrose interpt  rygoidienne". At this level gets sympathic branches from the plexus caroticus externus et internus, making a plexiform structure interfering sometimes a vegetative ganglion formation. At 16.6% of the cases between the @entity129 are established connection bridges more or less developed. They have an asymetric aspect. There were observed evident connections between the @entity129 and the @entity8810 taking a mono- or pluriradicular form. The mylohyoidian nerve on his homonymous way gives 2--3 sensitive, or vegetative branches to the bone. Practically speaking are important the branches coming from the precanalicular portion of n. @entity2520 perforating the periost and penetrating independently in to mandibula through separated vents. These results are practically useful in Stomatological technique explaining from an anatomically point of view the inefficiency of mandibular anaesthesia in some cases although it is correctly applied.
