• Journal of the Korean Society of Radiology
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• v.15 no.4
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• pp.491-498
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• 2021

In this study, the effective dose was measured using the PCXMC v2.0 program by examining the conditions used to set the diagnostic reference level for intraoral imaging recommended by the government, and the effect of the Al additive filter was confirmed. In oral imaging, the largest effective dose was calculated from the oral mucosa among 11 organs. The effect of the Al additive filter showed an excellent radiation reduction effect at 2mm rather than 1mm. In the case of children aged 5 years, the overall effective dose was calculated to be high in all 11 organs because they are more sensitive to radiation than adults. And as a result of evaluating the image quality according to the use of an additional filter during intraoral imaging, there was no significant difference in SNR and CNR changes compared to before the additional filter was used. Based on this study, it is thought that additional filter settings can be recommended for intraoral imaging.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.1
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• pp.136-143
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• 2008

Infections involved with the oral and maxillofacial area are associated with various anatomical structures. If the proper treatment is not done in an immediate period, the infections will be quite fatal. The causes of the infections are numerous, but the most common cause of odontogenic infections in children is a dental caries. It is known to lead to some kinds of diseases such as periapical abscess, cellulitis, osteomyelitis, Ludwig's angina, toxic shock syndrome and so on. The common pathogenic sequence of fascial abscess is a necrotic pulpal inflammation in the form of dentoalvelor abscess which spreads over and gradually penetrates into the fascial membranes through the cortical bones and finally contracts the potential fascial spaces. If the infections of oral maxillofacial area were penetrated into the surrounding soft tissues, then they would diffuse into the directions of the least tissue resistance along with the connective tissues and the fascial spaces. These infections can be properly cured by tooth extraction, endodontic therapy, surgical treatment including Incision & drainage and antibiotics. The purpose of the cases is to report the satisfactory treatment results in the patients derived from the canine fascial space abscesss or buccal fascial space ones of the odontogenic origin.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.35 no.6
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• pp.474-480
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• 2009

These is a cases of chronic suppurative osteomyelitis occurred in the mandibular body to condyle of 48-year-old male patient. Extensive bone destruction was noted on the right mandibular body, angle, ascending ramus, mandibular notch and condylar region. We made a treatment plan that radicular mandibular resection from body to condyle and mandibular reconstruction with vascularized fibular flap at first time. But, we could observe marked bone regeneration with only mild curettage, local wound care and massive antibiotic therapy. So we preserved the anterior ramus portion of mandible. Defected mandibular condyle was reconstructed with costochondral graft. In this paper we present the case of a patient who has chronic osteomyelitis in mandibular area.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.23 no.2
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• pp.169-173
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• 2001

Maxillary-malar deficiency is the most frequently occurring midface dentofacial deformity. Clinicaly patients with maxillary-malar deficiency exhibit malar and infraorbital rim deficiency and class III malocclusion. For treatment of these deformities, modified LeFort III osteotomy have been used. Modified LeFort III osteotomy advances maxilla with orbital rims and zygomatic bone anteroposteriorly. This is a case of patient who had severe mandibular prognthism with midface deformity. We performed modified LeFort III osteotomy for maxillary-malar advancement and simultaneous bilateral sagittal split ramus osteotomy for mandibular prognathism and autogenous iliac bone graft.

• Archives of Craniofacial Surgery
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• v.11 no.2
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• pp.111-115
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• 2010

Purpose: A plunging ranula is relatively uncommon and represents a mucus escape reaction occurring from a disruption of the sublingual salivary gland. It is a common condition found in young adults, even though the reported age range is 2 - 61 years. We report our experience of a complete excision of a plunging ranula via the intraoral and submandibular approach. Methods: A 23-year-old man had a large protruding mass in the right submandibular area. Initially, the protruding mass appeared bilaterally but the left side disappeared spontaneously. The MRI findings revealed a homogenous fluid attenuation mass in the submandibular space, suggesting a ranula. The sublingual gland was extirpated through the intraoral approach and the ranula excised totally via the submandibular approach. Results: The patient had an uneventful postoperative course without infection, paralysis and tongue sensory changes, etc. The pathology findings were characteristic of a pseudocyst without a lining epithelium or endothelium but with a vascular fibro-conective tissue wall filled with mucinous fluid. No recurrence was observed on the submandibular area during the 8 month follow-up period. Conclusion: The combined intraoral approach and submandibular approach is an effective and highly recommended method for sublingual gland extirpation and complete excision of a plunging ranula.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.32 no.3
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• pp.267-271
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• 2006

Lymphangiomas are benign tumors of the lymphatic system characterized by congenital lymphatic malformation such as anastomosis or obstruction of the lymphatic channels. They are most frequently diagnosed in children younger than 2 years, and the lymphangiomas in head and neck represent about 50-75% of all lymphangiomas. Spontaneous regression is rare, and rapid enlargement occurs secondary to infection or trauma. Enlargement may cause serious sequence such as airway obstruction, feeding difficulties, and cosmetic problems. Treatments previously used for lymphangiomas include surgical excision and intralesional injection of sclerosing agents. Problems associated with surgical excision include the risk of scarring, damage to surrounding vital structure and the high risk of incomplete excision. The sclerosing agents previously used have numerous local and systemic side effects as their problems. We present a case of lymphangioma occured in tongue that was treated by surgical excision and sclerotherapy with OK-432.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.12 no.2
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• pp.82-87
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• 1990

There are some methods of approach to the temporomandibular joint. The preauricular, the endaural and the postauricular incision are frequently used among those. The preauricular incision necessiates a preauricular scar, possible postopertive facial nerve damage and is the least cosmetically desirable incision. The endaural incision is more esthetic than preauricular incision, but it is not sufficient. The postauricular approach allows adequate exposure with decreased occurence of injury to facial nerve and excellent cosmetic results. The purpose of this report is to discuss the surgical approach of postauricular incision to the cases of TMJ ankyloses, internal derangement and condylar fracture of mandible.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.20 no.4
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• pp.291-295
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• 1998

Intravenous anesthesia was compared with inhalation anesthesia in 20 patients of oral and maxillofacial surgery. The patients were randomly assigned to study in two treatment groups. 20 patients were injected ketamine and propofol. 20 patients were administered Enflurane. The respond of patients consciousness and general recovery condition of the two groups were compared. Intravenous anesthesia group were awake significantly faster without complications such as nause, vomiting, and agitation after operation than inhalation anesthesia group. Full recovery time of intravenous anesthesia group was significantly 3 times less than inhalation anesthesia group. The authors conclude that intravenous anesthesia is a practical technique for oral and maxillofacial surgery patients undergoing and may be preferable to intravenous anesthesia because of the significantly short of recovery time without complications.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.29 no.5
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• pp.456-462
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• 2007

Since the first description of bisphosphonate related osteonecrosis of the jaw (BRONJ) in 2002, the number of report on the disease has rapidly been increasing. Now, BRONJ is considered as a new entity, which is emerging problem in oral and maxillofacial surgery. Bisphosphonates (BPs) can be categorized into 2 groups: nitrogen-containing and non-nitrogen containing, and nitrogen-containing BPs are considered to have more efficacy and toxicity possibly. It is unusual for osteonecrosis to occur in the maxilla but BRONJ is found in both the mandible and the maxilla, which is one of the special features of BRONJ compared with common infectious osteomyelitis of the jaws. Intravenous BPs are usually more likely to cause BRONJ than oral BPs which are frequently prescribed for osteoporosis and osteopenia. Nonetheless, the use of intravenous BPs cannot be prevented because of systemic condition of the patients. Although it is rare that oral BPs cause BRONJ in osteoporosis/osteopenia patients, we should be aware of BRONJ since the population of the patients is exceedingly increasing with the prolonging of life expectancy. So, we'd like to enlighten upon the problems and solutions of BRONJ.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.28 no.2
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• pp.178-182
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• 2006

Pulmonary edema is a well known phenomenon in medicine, physical findings indicative of this condition include frothy pink sputum, dispnea, and chest X-ray may present cephalization of vessels, perihilar edema, or diffused increase of density. It is one of the most serious, life threatening situation and should be diagnosed and managed instantly. Early diagnosis and intensive treatment are mandatory in order to effectively resolve the situation. The most common etiology for this pathology is cardiogenic, such as left ventricular failure and valvular disease. The one following is noncardiogenic, such as transfusion, infectious pneumonia, inhaled toxins, shock lung in association with trauma. Other forms of pulmonary edema which have not been clearly explained result from pulmonary embolism, drug overdose, after anesthesia, epinephrine overdose, exposure to high altitude, neurogenic, etc. We experienced two cases of pulmonary edema during two jaw surgeries(Le Fort I Osteotomy & BSSRO). These patients were young and physically healthy individuals on preoperative evaluation. Thus we report and discuss the etiology, diagnosis, prognosis, and treatment with journals review.