ABSTRACT
After acrylic injections into the vessels and mandibular block anaesthesia the pterygo-mandibular space is studied in 38 anatomical pieces. 538 colour slides have been obtained from anatomical cuts at low temperature with the scannigraph system. The results point out that a cranio-pharyngo-mandibular space is clearly distinguished laterally, from a medial maxillo-pharyngeal space. There is no transversal communication between them. On the contrary, the cranio-pharyngo-mandibular space communicates, forward and upward, with the temporal space; forward and downward, with the sub-mandibular space. The cranio-pharyngo-mandibular space contains an interpterygoid space communicating with the oval foramen by a "chimney" largely filled by the emissary pterygoid veins. A pericondilar plexus of veins is also observed. The cranio-pharyngo-mandibular space is characterised by the cellulo-adipose tissue by which it is filled and which guides the diffusion of injected solutions to the oval foramen.
Subject(s)
Pharynx/anatomy & histology , Temporomandibular Joint/anatomy & histology , Aged , Aged, 80 and over , Fascia/anatomy & histology , Female , Frozen Sections , Humans , Male , Middle Aged , Pterygoid Muscles/anatomy & histology , VeinsABSTRACT
Ophthalmic complications of intra-oral loco-regional anesthesia are rare. Three personal cases have incited the authors to review the world literature on this topic and emphasize a few epidemiological data as well as the broad outline of the characteristic clinical picture. Various etio-pathogenic hypotheses are discussed: arterial, venous or sympathetic routes. It seems that, with our current knowledge, no univocal explanation is perfectly satisfactory.
Subject(s)
Anesthesia, Conduction/adverse effects , Anesthesia, Dental/adverse effects , Anesthesia, Local/adverse effects , Eye Diseases/etiology , Oculomotor Nerve Diseases/etiology , Adolescent , Adult , Female , Humans , Injections/adverse effects , Male , Middle AgedABSTRACT
Described in 1973, the GOW-GATES mandibular block uses extra-oral landmarks. The anesthetic is deposed to the condylar neck. Gow-Gates claims that this single injection is enough for anesthesizes the sensitive branches of the mandibular nerve. The study of anatomical cuts shows that the interpterygoïd facial guides the anesthetic drug in bottom an ahead toward the mandibular foramen. That the liquid occupies all the pterygo mandibular space and that it escapes about it behind only through the Juvara slot.
Subject(s)
Anesthesia, Dental/methods , Anesthesia, Local/methods , Mandibular Nerve/anatomy & histology , Nerve Block , Aged , Female , Humans , MaleABSTRACT
After a rapid description of the pterygomandibular space, the authors describe the anatomy of the interpterygoid fasciae. The interpterygoid fasciae divide the pterygomandibular region into two compartments. The interpterygoid fascia is the most important layer; its limits are defined with precision. The individuality of the pterygotemporomaxillary fascia is less well defined. The authors then report their own study about the functional anatomy of these fasciae by means of frozen sections of color-injected fresh anatomical specimens. The results confirm the importance of the interpterygoid fasciae in guiding the anesthetic solution to the mandibular foramen in mandibular nerve block.
