Background: Anterior open bite is a challenging malocclusion to correct orthodontic treatment. Anterior open bite associated with over-erupted posterior teeth and long lower facial height should be treated by reduction of posterior dimension for esthetic results. Although the possibility of orthodontic treatment of an anterior open bite has increased with the introduction of skeletal anchorage, there are still cases requiring surgery for various reasons.Case presentationThis case report covers an anterior open bite of a 25-year-old man successfully treated with the posterior maxillary segmental osteotomy (PMSO) and miniplates. After the pre-surgical orthodontic treatment, the PMSO between canines and first premolars was performed under local anesthesia and miniplates were placed on the zygomatic buttress. As a result of 28 months of treatment, an impaction amount of 3.5 mm was obtained in the maxillary posterior teeth, and the facial esthetics improved at rest and smile. Conclusion The impaction of the posterior dentoalveolar segment using the PMSO can be a good treatment option in patients with anterior open bite showing long lower facial height.

Background: Anterior open bite is a challenging malocclusion to correct orthodontic treatment. Anterior open bite associated with over-erupted posterior teeth and long lower facial height should be treated by reduction of posterior dimension for esthetic results. Although the possibility of orthodontic treatment of an anterior open bite has increased with the introduction of skeletal anchorage, there are still cases requiring surgery for various reasons.Case presentationThis case report covers an anterior open bite of a 25-year-old man successfully treated with the posterior maxillary segmental osteotomy (PMSO) and miniplates. After the pre-surgical orthodontic treatment, the PMSO between canines and first premolars was performed under local anesthesia and miniplates were placed on the zygomatic buttress. As a result of 28 months of treatment, an impaction amount of 3.5 mm was obtained in the maxillary posterior teeth, and the facial esthetics improved at rest and smile. Conclusion The impaction of the posterior dentoalveolar segment using the PMSO can be a good treatment option in patients with anterior open bite showing long lower facial height.

PURPOSE: The purpose of this study was to determine the role of CT and MR imagings in the diagnosis aortic dissection and differentiation between the true and false lumen. MATERIALS AND METHODS: We retrospectively studied forty patients with aortic dissection(AD) diagnosed imagings or surgery. Of the forty patients, 19 were examined with only CT, 14 with CT and MR, and 7 with MI~: Our points of view were(1) the classification of AD according to configuration of intimal flap by cross-sectional imaging, (2) differentiation between the true and false lumens, (3) the course of the false lumen, and (4)! detectability of the origin of major branch vessels of the abdominal aorta. RESULTS: The classification by corss-sectional imaging were crescentic(65%), circumferential(15%), flat(12%), and irregular(8%) type, in which false negative diagnosis was made in 1 case of crescentic and circumferential type, respectively. In 2 case of flat type and 1 case of irregular type, the differentiation between the true and false lumen was impossible with CT. The course of the false lumen in descending thoracic aorta revealed countrclock wise rotation(66%), clockwise rotation(5%) or fixed(29%) apperance. MR imaging was superior to CT in the detection of the origin of major branch vessels of the abdominal aorta. The determination of the origin of major branches of abdominal aorta arising from the true and false lumen were impossible in 2 cases in which only CT was done. CONCLUSION: Diagnosis of crescentic and circumferential types of AD with narrow and thrombosed false lumen was problematic in both CT and MR with no difference of diagnostic accuracy between the two modalities. The differentiation between the true and false lumen was difficult in flat and irregular types with only CT. Therefore, when surgical treatment is considered as in type B aortic dissection, MR imaging is recommended in order to determine the origin of major branch vessels.
Aorta, Abdominal ; Aorta, Thoracic ; Classification ; Diagnosis* ; Humans ; Magnetic Resonance Imaging ; Retrospective Studies

Spontaneous infrarenal abdominal aortic dissection (SIAAD) is a rare entity with various clinical presentations. We recently encountered the even rarer condition of a female patient suffering from chronic SIAAD with multiple intimal flaps and prominent lumbar artery collaterals; this all caused stenotic changes of the infrarenal abdominal aorta and produced progressive lower extremity pain and claudication in both her legs. This patient's condition was successfully managed by primary stent placement followed by balloon angioplasty.
Angioplasty, Balloon ; Aorta, Abdominal ; Arteries ; Female ; Humans ; Leg ; Lower Extremity ; Stents*

The major purpose for the use of autotransfusion is to prevent the transmission of blood borne infectious agents, such as human immunodeficiency virus and non-A & non-B hepatitis virus. To evaluate the efficacy and quality of autolgous shed blood for autotransfusion, eighty patients who had total knee arthroplasty from Dec. 1992 to Mar. 1994, were included in one of two groups: Group I, who received the autotransfusion, or Group II, who did not. Each group included 20 patients of unilateral TKR and 20 patients of bilateral TKR. The Orth-evac system(Deknatel, USA) was used to salvage drained blood in the first six hours after the operation. All of the patients were evaluated for the postoperative blood loss, transfusion requirements, hemoglobin, hematocrit, platelet count, blood pressure and body temperatures. l. In bilateral TKR, the reinfusion of shed blood reduced the requirements for homologous blood by 41.4%(1.2 pints in group I versus 2.9 pints in group II). In unilateral TKR, it was decreased to 36.4%(0.4 pint in group I vs 1.1 pint in group II). 2. In bilateral TKR, the requirements for homologous transfusion was decreased from 95% of patients in control group to 55% in group I .In unilateral TKR, it was decreased from 60% to 20%. 3. There were four patients who had high fever above 39℃ after autotransfusion. 4. At the immediate postoperative period there were two patients who had hypovolemic shock in group I patients who had bilateral TKR. 5. There was no clotting abnormality, no transfusion reaction and no thromboembolic disease in group I patients. In conclusion, the reinfusion of autologous shed blood after TKR is an acceptable alternative to the homologous transfusion without untoward effect.
Arthroplasty, Replacement, Knee ; Blood Transfusion, Autologous ; Body Temperature ; Fever ; Hematocrit ; Hepatitis Viruses ; HIV ; Humans ; Knee ; Platelet Count ; Postoperative Hemorrhage ; Postoperative Period ; Shock ; Transfusion Reaction

Airway Management ; Ethmoid Bone ; Fractures, Bone ; Humans ; Intention ; Intubation ; Intubation, Intratracheal ; Orthognathic Surgery ; Rhinoplasty ; Skin ; Surgery, Oral ; Tracheostomy

No Abstract available.

Botulinum toxin (BTX) has various therapeutic indications: bruxism, square jaw, facial wrinkle, oral ulcer and maxillofacial pain, etc. In this paper, we will discuss the effectiveness of using BTX in dental implant surgery and orthognathic and orthodontic treatment. We summarized the clinical application of botulinum toxin in the maxillofacial field at the finale.

Botulinum toxin (BTX) is used in various ways such as temporarily resolving muscular problems in musculoskeletal temporomandibular disorders, inducing a decrease in bruxism through a change in muscular patterns in a patient's bruxism, and solving problems in patients with tension headache. And also, BTX is widely used in cosmetic applications for the treatment of facial wrinkles after local injection, but conditions such as temporomandibular joint disorders, headache, and neuropathic facial pain could be treated with this drug. In this report, we will discuss the clinical use of BTX for facial wrinkle, intraoral ulcer, and cranio-maxillofacial pain with previous studies and share our case.

The application of botulinum in oral and maxillofacial surgery begins in 1982, where Jan Carruthers started using it for reducing the muscle mass and smoothing the skin, and since then it has been used for cosmetic purposes. In Korea, it is already being used by various specialties including dentistry (oral and maxillofacial surgery, oral medicine), plastic surgery, dermatology, ophthalmology, general surgery, and orthopedic surgery, etc. Each specialty approaches to Botox with its own medical indications. In this article, we will discuss the maxillofacial application of botulinum toxin, which includes theoretical and practical aspects of such as bruxism and square jaw.