The inferior alveolar nerve is branch of?
A- Mandibular nerve.
B- Posterior mandibular alveolar nerve.
C- Anterior mandibular alveolar nerve.
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Labio-chin anesthesia and anesthesia of the inferior alveolar nerve:
Labio-chin anesthesia, formerly known as "Vincent's Sign", is a set of objective and / or subjective sensory disturbances in the territory of the inferior or alveolar alveolar nerves, that is to say affecting a lower hemi-lip and a hemi-chin.
Why did they talk about Vincent's sign?
Because one named Vincent is probably the first to have described in 1896 this sign as an early element of diagnosis of some serious osteitis. Then, this sign was resumed in local dental anesthesia, as a supposed means to affirm the success of the block of the inferior alveolar nerve. But about the above named Vincent, there is some confusion: the original article is signed by a certain B. Vincent, while in the Medical Dictionary of the Academy of Medicine - version 2015-2, it is stated that it is JH Vincent (1862-1950), the famous microbiologist, who would have the paternity of this sign. B Quichaud, in his 1980 thesis, attributed it, for its part, to a certain "Vincent of Algiers" because he would have been a doctor of the bey of Algiers, or would have been at the Faculty of Medicine of that city . J. H. Vincent, the microbiologist, has certainly been to the Faculty of Algiers, but what about B. Vincent who published in a Swiss journal? I think in fact, few people really read the article. I am looking for him, and will not fail to tell you the result of my curiosity, if any. In short, one is lost in conjectures, so that all these exotic potential misunderstandings are an additional justification of the desire to eradicate the eponyms of the medical vocabulary.
A brief reminder of the significance of labial-chin anesthesia in pathology:
In most cases, labial-chin anesthesia is caused by nerve damage occurring during dental or maxillofacial surgery: endodontic overflow, lower alveolar nerve block, osteotomies in the treatment of prognathisms mandibular, fracture repair osteosynthesis. But it is a sign of great diagnostic value, because it can be observed in pathologies of extremely varied origin: neurological (iatrogenic, during facial pain, neuroma, multiple sclerosis) or diseases of the mandible, that they are traumatic (fracture, nerve contusions during extraction, apical surgery), dental infectious (abscess, cellulitis, osteitis, osteomyelitis), tumoral (cysts, ameloblastomas, but also epitheliomas, sarcomas), finally systemic, in particular , bisphosphonate treatments (Colella et al, 2009).
This sign is often misdiagnosed, which can unfortunately lead to late detection of malignant pathology. We should know the relationship between malignant tumors and paresthesia or complete loss of sensation of the chin, as well as the diagnostic limits of an orthopantomogram to detect causal pathologies.
These few lines to show the great diagnostic and prognostic value of this sign in pathology.
I close this parenthesis, moving away from the original intention, to return now to our supposed favorite subject, dental local anesthesia, and examine the role played by this labial-chin anesthesia.
Labio-chin anesthesia and anesthesia of the alveolar nerve below the mandibular foramen:
A preliminary remark: failure of anesthesia of the lower alveolar nerve affects all practitioners. Anyone who hopes to achieve 100% analgesic success with this anesthesia, is exposed to strong disappointments, and frustrations that are not without consequences: to seek perfection is good, to believe that it is always at the rendezvous, it carries potential deleterious effects.
Because applies to all, without exception, the famous rule of "never two without three", or, if you prefer: the trouble - not to do in the trivial, that's not my style ... - arrive often in group shooting. Now, that one of us who has never suffered failures, or several successive failures in this exercise, raises the finger: it is a mystifier.
The failure of the anesthesia of the inferior alveolar nerve is described everywhere, and is the object of extremely varied explanations, going, classically, anatomical causes to those related to the material, the local inflammation, etc.
A- Mandibular nerve.
B- Posterior mandibular alveolar nerve.
C- Anterior mandibular alveolar nerve.
----------------------------
Labio-chin anesthesia and anesthesia of the inferior alveolar nerve:
Labio-chin anesthesia, formerly known as "Vincent's Sign", is a set of objective and / or subjective sensory disturbances in the territory of the inferior or alveolar alveolar nerves, that is to say affecting a lower hemi-lip and a hemi-chin.
Why did they talk about Vincent's sign?
Because one named Vincent is probably the first to have described in 1896 this sign as an early element of diagnosis of some serious osteitis. Then, this sign was resumed in local dental anesthesia, as a supposed means to affirm the success of the block of the inferior alveolar nerve. But about the above named Vincent, there is some confusion: the original article is signed by a certain B. Vincent, while in the Medical Dictionary of the Academy of Medicine - version 2015-2, it is stated that it is JH Vincent (1862-1950), the famous microbiologist, who would have the paternity of this sign. B Quichaud, in his 1980 thesis, attributed it, for its part, to a certain "Vincent of Algiers" because he would have been a doctor of the bey of Algiers, or would have been at the Faculty of Medicine of that city . J. H. Vincent, the microbiologist, has certainly been to the Faculty of Algiers, but what about B. Vincent who published in a Swiss journal? I think in fact, few people really read the article. I am looking for him, and will not fail to tell you the result of my curiosity, if any. In short, one is lost in conjectures, so that all these exotic potential misunderstandings are an additional justification of the desire to eradicate the eponyms of the medical vocabulary.
A brief reminder of the significance of labial-chin anesthesia in pathology:
In most cases, labial-chin anesthesia is caused by nerve damage occurring during dental or maxillofacial surgery: endodontic overflow, lower alveolar nerve block, osteotomies in the treatment of prognathisms mandibular, fracture repair osteosynthesis. But it is a sign of great diagnostic value, because it can be observed in pathologies of extremely varied origin: neurological (iatrogenic, during facial pain, neuroma, multiple sclerosis) or diseases of the mandible, that they are traumatic (fracture, nerve contusions during extraction, apical surgery), dental infectious (abscess, cellulitis, osteitis, osteomyelitis), tumoral (cysts, ameloblastomas, but also epitheliomas, sarcomas), finally systemic, in particular , bisphosphonate treatments (Colella et al, 2009).
This sign is often misdiagnosed, which can unfortunately lead to late detection of malignant pathology. We should know the relationship between malignant tumors and paresthesia or complete loss of sensation of the chin, as well as the diagnostic limits of an orthopantomogram to detect causal pathologies.
These few lines to show the great diagnostic and prognostic value of this sign in pathology.
I close this parenthesis, moving away from the original intention, to return now to our supposed favorite subject, dental local anesthesia, and examine the role played by this labial-chin anesthesia.
Labio-chin anesthesia and anesthesia of the alveolar nerve below the mandibular foramen:
A preliminary remark: failure of anesthesia of the lower alveolar nerve affects all practitioners. Anyone who hopes to achieve 100% analgesic success with this anesthesia, is exposed to strong disappointments, and frustrations that are not without consequences: to seek perfection is good, to believe that it is always at the rendezvous, it carries potential deleterious effects.
Because applies to all, without exception, the famous rule of "never two without three", or, if you prefer: the trouble - not to do in the trivial, that's not my style ... - arrive often in group shooting. Now, that one of us who has never suffered failures, or several successive failures in this exercise, raises the finger: it is a mystifier.
The failure of the anesthesia of the inferior alveolar nerve is described everywhere, and is the object of extremely varied explanations, going, classically, anatomical causes to those related to the material, the local inflammation, etc.
In case of failure of a technique, simply to acter this failure without making a precise analysis from the result obtained is of no help, if one wishes to cherish the hope to remedy it. It seems obvious that if we repeat in the same place an injection that has led to a failure, we have every chance - even all risks - to obtain the same result, a failure, the same causes having strong chances of generating the same effects.
This analysis must therefore make an observation of the effect produced by the unsuccessful attempt at anesthesia.
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Oral Surgery