Application of augmented reality for inferior alveolar nerve block anesthesia: A technical note

Efforts to apply augmented reality (AR) technology in the medical field include the introduction of AR techniques into dental practice. The present report introduces a simple method of applying AR during an inferior alveolar nerve block, a procedure commonly performed in dental clinics.

Facial blanching after inferior alveolar nerve block anesthesia: an unusual complication

The present case report describes a complication involving facial blanching symptoms occurring during inferior alveolar nerve block anesthesia (IANBA). Facial blanching after IANBA can be caused by the injection of an anesthetic into the maxillary artery area, affecting the infraorbital artery.

Postmortem Diagnosis of Diabetic Ketoacidosis: An Autopsy Case / 대한법의학회지

Diabetic ketoacidosis is an acute complication of type 1 diabetes mellitus, which is observed frequently in routine autopsies. However, there are limitations of postmortem diagnosis of diabetic ketoacidosis. Clinical diagnostic criteria of the disease are not applicable to postmortem diagnosis because of the postmortem changes of the body; hence, diagnostic morphological changes cannot be observed. We report the case of a 47-year-old man that was diagnosed with diabetic ketoacidosis via routine autopsy and laboratory tests without information regarding his medical history. Additionally, we present a brief literature review.

Occurrence of bilateral pneumothorax during tracheostomy in a patient with deep neck infection

Infection that progresses to deep areas of the neck requires appropriate assessment of the airway, and securing of the airway is critical in patients with deep neck infection. In the patient in our case report, bilateral pneumothorax occurred while performing tracheostomy to the airways of a patient with deep neck infection, and therefore, this paper details the method used to secure the airway of patients with deep neck infection.

Occurrence of bilateral pneumothorax during tracheostomy in a patient with deep neck infection

Infection that progresses to deep areas of the neck requires appropriate assessment of the airway, and securing of the airway is critical in patients with deep neck infection. In the patient in our case report, bilateral pneumothorax occurred while performing tracheostomy to the airways of a patient with deep neck infection, and therefore, this paper details the method used to secure the airway of patients with deep neck infection.

Novel three-dimensional position analysis of the mandibular foramen in patients with skeletal class III mandibular prognathism

PURPOSE: To analyze the relative position of the mandibular foramina (MnFs) in patients diagnosed with skeletal class III malocclusion. MATERIALS AND METHODS: Computed tomography (CT) images were collected from 85 patients. The vertical lengths of each anatomic point from the five horizontal planes passing through the MnF were measured at the coronoid process, sigmoid notch, condyle, and the gonion. The distance from the anterior ramus point to the posterior ramus point on the five horizontal planes was designated the anteroposterior horizontal distance of the ramus for each plane. The perpendicular distance from each anterior ramus point to each vertical plane through the MnF was designated the horizontal distance from the anterior ramus to the MnF. The horizontal and vertical positions were examined by regression analysis. RESULTS: Regression analysis showed the heights of the coronoid process, sigmoid notch, and condyle for the five horizontal planes were significantly related to the height of the MnF, with the highest significance associated with the MnF-mandibular plane (coefficients of determination (R2): 0.424, 0.597, and 0.604, respectively). The horizontal anteroposterior length of the ramus and the distance from the anterior ramus point to the MnF were significant by regression analysis. CONCLUSION: The relative position of the MnF was significantly related to the vertical heights of the sigmoid notch, coronoid process, and condyle as well as to the horizontal anteroposterior length of the ascending ramus. These findings should be clinically useful for patients with skeletal class III mandibular prognathism.

Aneurysmal Rupture of the Internal Carotid Artery in a Presumed Neurofibromatosis Type I Patient / 대한법의학회지

Aneurysm of the internal carotid artery is a rare disease and is known to be associated with congenital arterial anomalies such as neurofibromatosis type I (NF-I). NF-I is an autosomal dominant neurocutaneous disorder characterized by a variety of manifestations that involve the central and peripheral nervous systems, skin, vascular system, and skeleton. In particular, the involvement of vascular abnormalities in NF-I is well known. Any vessel may be affected by this condition, although the renal artery is most frequently involved. The vascular abnormality can be occlusive or an aneurysmal degenerative change. Therefore, symptomatic presentations might assume an indolent pathophysiologic course such as hypertension, or manifest as a catastrophic event such as arterial rupture that could result in sudden death. We report a rare autopsy case of an aneurysmal rupture of the internal carotid artery in a woman with suspected NF-I, who collapsed in her home.

The Verdict of Self-strangulation in the Putrefied Body / 대한법의학회지

A 48-year-old divorced woman was found dead, lying in her room. A scarf was wound two times around her neck, which was tightened like a tourniquet. Self- strangulation by ligature is very rare and such cases emphasize the need for an accurate medicolegal evaluation of the circumstances, a thorough postmortem examination, and methodical inspection of the scene, particularly when postmortem decomposition is present. This case showed decomposition and was initially treated by the police as endogenous cardiac death. However the detailed examination of the scene photograph and of the deceased person, along with the investigation of the circumstances leading to the death, produced the verdict of suicide in this case. As we know, distinction between murder and suicide may be impossible by an examination of the body alone, and therefore the authors emphasize that close collaboration between the investigative and medicolegal fields is essential in order to gain a full understanding of this unusual case.