• Title/Summary/Keyword: Mandible

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Intraosseous neurofibroma of the mandible involving masticator space (저작근 공간을 침범한 하악골내 신경섬유종)

  • Kim, Eun-Kyung;Han, Won-Jeong;Choi, Jin-Woo;Kim, Hak-Sun
    • The Journal of the Korean dental association
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    • v.58 no.9
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    • pp.556-562
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    • 2020
  • Neurofibroma is a benign, heterogenous peripheral nerve sheath tumor arising from the connective tissue of peripheral nerve sheaths, especially the endoneurium. Its intraoral occurrence is uncommon and its occurrence within mandible is extremely rare. A case of solitary intraosseous neurofibroma of the mandible involving masticator space in a 8-year-old male is reported. He was referred from a private local clinic with a chief complaint of limitation in opening of the mouth. Panoramic and cone-beam computed tomographic images showed unilocular radiolucent lesion with scalloped border at the right mandibular ramus, connected posteriorly to the enlarged mandibular foramen and anteriorly to the mandibular canal. T1-weighted magnetic resonance images showed soft tissue mass of isointensity compared with muscles. Contrast-enhanced T1-weighted images showed peripheral enhancement and T2-weighted images showed the heterogeneous hyperintense mass with extension between lateral and medial pterygoid muscles. The tumor was surgically removed under general anesthesia and diagnosed to be neurofibroma at the biopsy.

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3 TYPES OF CEMENTO-OSSEOUS DYSPLASIA : CASE REPORTS (3가지 형태의 백악질-골성 이형성증에 대한 증례보고)

  • Kim, Young-Ran;Kim, Yeo-Gab;Lee, Baek-Soo;Kwon, Yong-Dae;Choi, Byung-Joon
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.35 no.6
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    • pp.481-485
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    • 2009
  • Cemento-osseous dysplasias are a group of disorders known to originate from periodontal ligament tissues and involve, essentially, the same pathological process. They are usually classified, depending on their extent and radiographic appearances, into three main groups. Periapical cemental dysplasia predominantly involves the periapical region of the anterior mandible. Florid cemento-osseous dysplasia presents with multifocal lesions in the tooth bearing or edentulous areas of the maxilla and mandible, often occurring bilaterally with symmetric involvement. Focal cemento-osseous dysplasia exhibits a single site of involvement in any tooth bearing or edentulous area of the mandible or maxilla, with the posterior mandible representing the most common site. We report the clinical, radiographic and histological findings of 3 types of cemento-osseous dysplasia with a review of literatures.

METASTATIC CANCER OF THE MANDIBLE: A CASE REPORT (하악골에 전이된 위암에 대한 증례 보고)

  • Seo, Go-Eun;Jeong, Ji-A;Song, Jun-Ho;Jeong, Tae-Yeong;Lee, Soo-Woon;Park, Sang-Jun
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.32 no.1
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    • pp.86-88
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    • 2010
  • Oral metastatic tumors are uncommon and account for about 1% of malignant oral neoplasm. The metastatic lesions are common in breast, lung, kidney and thyroid cancer. About 20% of oral mucosal metastasis is founded before detection of primary lesions. Usually, the metastatic lesions of the oral cavity are involved in the jaw bone, especially mandible more than the oral soft tissues. We report a case diagnosed as the stomach cancer with mandible metastatic lesion looking like TMJ abscess.

A STUDY ON THE MANDIBULAR GROWTH IN SURGICALLY REPAIRED UNILATERAL CLEFT LIP AND PALATE (편측성순구개열자의 하악골성장에 관한 연구)

  • Park, Chun-Keun;Yang, Won-Sik
    • The korean journal of orthodontics
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    • v.19 no.1 s.27
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    • pp.153-167
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    • 1989
  • This study was undertaken to analyze the growth of mandible in surgically repaired unilateral cleft lip and palate. The subjects consisted of 63 unilateral cleft lip and palate individuals, 60 class III malocclusions and 60 normal occlusions ranging from 6 to 15 years old. Each group was divided into two age groups. (6-10 Y and 11-15 Y) The results obtained from UCLP compared with other groups were as follows: 1. The anteroposterior position of the chin was similar to that of the normal occlusions. 2. The shape of the mandible was similar to that of the class III malocclusions. 3. In mandibular size, ramus height was the smallest among three groups, but body length and overall mandibular length were similar to those of the normal occlusions. 4. The lower border of the mandible was the steepest among three groups and strong vertical or clockwise growth tendency was indicated. 5. The position of condyle in relation to the cranial base showed little difference in three groups. 6. In older age group , vertical growth tendency of the mandible decreased more or less.

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Difficult airway management in a patient with a thin mandible

  • Choi, Hong-Seok;Oh, Jong-Shik;Kim, Eun-Jung;Yoon, Ji-Young;Yoon, Ji-Uk;Kim, Cheul-Hong
    • Journal of Dental Anesthesia and Pain Medicine
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    • v.16 no.4
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    • pp.317-320
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    • 2016
  • A 47-year-old woman was referred for surgical treatment of osteomyelitis of the mandible. She had already undergone three previous surgeries. Pre-anesthetic airway evaluation predicted a difficult airway, due to the thin, retro-positioned mandible, tongue, and atrophic changes in the lips and soft tissue. We inserted packing gauzes in the buccal mucosa for easier mask fitting and ventilation. During direct laryngoscopic intubation with a nasotracheal tube (NTT), fracture of a thin mandible can easily occur. Therefore, we used a fiberoptic bronchoscope to insert the NTT. After surgery, we performed a tongue-tie to protect against airway obstruction caused by the backward movement of the tongue during recovery. The patient recovered without any complications. We determined the status of the patient precisely and consequently performed thorough preparations for the surgery, allowing the patient to be anesthetized safely and recover after surgery. Careful assessment of the patient and airway prior to surgery is necessary.

Fibular Free Flap Mandibular Reconstruction (유리 비골 전이술을 이용한 하악골 재건술)

  • Oh, Myung-Rok;Lee, Nae-Ho;Yang, Kyung-Moo
    • Archives of Reconstructive Microsurgery
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    • v.8 no.1
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    • pp.28-34
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    • 1999
  • The need for reconstruction of large bone, soft tissue defect of mandible has greater emphasis due to development of industry, traumatic accident and increase of tumor. The mandibular reconstruction had greatly progressed through the first and the second World Wars. The Fibular free flap by using microscope was reported in 1970 and many maxillofacial reconstructive surgeons had used. In 1988, Dr. Hidalgo first reported mandibular reconstruction by using fibular free flap. Mandibular reconstruction by using fibular free flap has several advantages. First, it provides up to 25 cm of bone, enough to reconstruct any length of mandible defect. Second, a skin island, based on a septocutaneous blood supply, is available in a size large enough to simultaneously reconstruct internal and external soft tissue defect. Third, The fibular donor site morbidity is low, fourth, it provides a esthetic effect of mandible line. And finally bone viability is good. The Fibular osteocutaneous free flap was performed after COMMANDO operation due to squamous cell cancer in oral cavity (15 cases). Therefore we report out successful operation of the mandible reconstruction by using fibular osteocutaneous free flap.

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Excessive Bleeding after Implant Placement in the Anterior Mandible: Case Report (하악 전치부 임플란트 식립 후에 발생한 과다출혈: 증례보고)

  • Jo, Ji-Ho;Kim, Su-Gwan;Moon, Seong-Yong;Oh, Ji-Su;Kim, Jeong-Sun
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.33 no.2
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    • pp.171-175
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    • 2011
  • Implant placement on the anterior mandible is considered a common and safe surgical procedure. However, severe hemorrhage can occur if branches of the sublingual artery, which run through the lingual cortical plate of the mandible, are damaged. Excessive hemorrhage caused by injury to the sublingual artery can result in life-threatening problems such as airway obstruction. A 54-year old male patient without any generalized systemic conditions was referred due to active bleeding after implant placement in the anterior mandible. Gauze compression with surgicel and bosimin were performed and hemostasis was achieved. The patient was discharged after 3 days without any supplementary bleeding.

Management of acquired open bite associated with temporomandibular joint osteoarthritis using miniscrew anchorage

  • Tanaka, Eiji;Yamano, Eizo;Inubushi, Toshihiro;Kuroda, Shingo
    • The korean journal of orthodontics
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    • v.42 no.3
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    • pp.144-154
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    • 2012
  • This article reports the orthodontic treatment of a patient with skeletal mandibular retrusion and an anterior open bite due to temporomandibular joint osteoarthritis (TMJ-OA) using miniscrew anchorage. A 46-year-old woman had a Class II malocclusion with a retropositioned mandible. Her overjet and overbite were 7.0 mm and -1.6 mm, respectively. She had limited mouth opening, TMJ sounds, and pain. Condylar resorption was observed in both TMJs. Her TMJ pain was reduced by splint therapy, and then orthodontic treatment was initiated. Titanium miniscrews were placed at the posterior maxilla to intrude the molars. After 2 years and 7 months of orthodontic treatment, an acceptable occlusion was achieved without any recurrence of TMJ symptoms. The retropositioned mandible was considerably improved, and the lips showed less tension upon lip closure. The maxillary molars were intruded by 1.5 mm, and the mandible was subsequently rotated counterclockwise. Magnetic resonance imaging of both condyles after treatment showed avascular necrosis-like structures. During a 2-year retention period, an acceptable occlusion was maintained without recurrence of the open bite. In conclusion, correction of open bite and clockwise-rotated mandible through molar intrusion using titanium miniscrews is effective for the management of TMJ-OA with jaw deformity.

A RADIOGRAPHIC STUDY OF DILACERATED SINGLE ROOTED TOOTH (치근단 X선사진을 이용한 만곡치의 연구)

  • Kim Chung-Woo;Hwang Eui-Hwan;Lee Sang-Rae
    • Journal of Korean Academy of Oral and Maxillofacial Radiology
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    • v.20 no.2
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    • pp.227-234
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    • 1990
  • The purpose of this study was to evaluate the incidence and several radiographic features of dilacerated teeth in 2132 full month radiograms in Korean. The results were as follows: 1. The occurrence was revealed to 2.7% in total examined teeth, and these anomalies were occurred in maxilla (52.4%) more than in mandible (47.6%). 2. There was a predilection for occurrence of dilaceration in female, which included 12.8% of the female compared to 11.3% in male. 3. The frequency of dilaceration in male, which included 40.5% in maxilla and 59.5% in mandible. The frequency of dilaceration in female, which included 52.4% in maxilla and 47.6% in mandible. 4. The order of frequency of dilaceration was second premolar, first premolar, lateral incisor, canine in maxilla, and first premolar, second premolar, canine, lateral incisor, central incisor in mandible. 5. In classifying of dilacerated teeth into 3 types by following appearances such as root curvature. Distal dilaceration was by far most common containing 65.8% of the cases. The least frequent was mesial dilaceration, which included 6.5% of the cases.

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TREATMENT OF MANDIBLE FRACTURES USING BIOABSORBABLE PLATES: PRELIMINARY STUDY (생흡수성판을 이용한 하악골 골절의 치료 : 일차보고)

  • Kim, Young-Kyun;Kim, Su-Gwan
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.27 no.6
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    • pp.570-575
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    • 2001
  • This study evaluated the short-term outcome of treating fractures of the mandible with bioabsorbable plates. Thirty-four fractures of the mandible in 27 patients were treated by open reduction and internal fixation using bioabsorbable plates and 2.4-mm, 2.0-mm, and 1.5-mm pre-tapped screws. The duration of intermaxillary fixation ranged from 0 to 23 days, with a mean of 5.3 days. Patients were evaluated for complications during the follow-up period, which ranged from 2 to 18 months. Five patients(18.5%) experienced complications. These included infection (four patients), and premature occlusal contact(one patient). Except for one case, all complications were minor and adequately managed with incision and drainage, elastic traction, and medication. Delayed infection (osteomyelitis) developed in a symphysis fracture and was treated by saucerization and antibiotics. The fracture line subsequently showed complete consolidation. Bioabsorbable plates can be selectively used for internal fixation in mandibular fractures with the advantage that they do not need to be removed.

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