Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 41, Issue 8
Displaying 1-14 of 14 articles from this issue
  • Prognosis in patients with cervical lymph node metastasis
    Takehisa YAMADA, Iwai TOHNAI, Yasushi HAYASHI, Makoto YAMBE, Yukio KAS ...
    1995 Volume 41 Issue 8 Pages 671-676
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    The correlation between clinicopathological factors and prognosis was investigated in 110 patients with primary squamous cell carcinomas of the oral cavity who underwent radical neck dissection at our institution between 1980 and 1993.
    Metastasis to the cervical lymph nodes was histologically confirmed in 35 cases (31.8%).
    The five-year survival rate was significantly higher in the patients without metastasis than in the patients with metastasis.
    In the patients with metastasis, there was no significant correlation between T classification, histological differentiation, mode of invasion, and prognosis. However, a significant correlation between these factors was noted in the patients without metastasis.
    The prognosis of patients with multiple metastatic nodes was worse than that of patients with single metastatic nodes. Moreover, the prognosis of patients with extranodal metastasis was worse than that of patients without it. However, there was no significant correlation between the site of cervical lymph node metastasis and prognosis.
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  • Naoyuki SATO, Ryoichi KAWABE, Satoshi UMINO, Yoshimi ISHIKAWA, Susumu ...
    1995 Volume 41 Issue 8 Pages 677-681
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Color Doppler imaging findings were reviewed for 36 lymph nodes in 13 patients with oral cancer who underwent neck dissection. Seventeen lymph nodes were histologically diagnosed as metastatic and 19 as non-metastatic. Color flow was observed in 6 nodes, all of which were non-metastatic. None of the 17 metastatic lymph nodes had color flow. Al-though 13 of the 19 non-metastatic lymph nodes also had no detectable color flow, all of these nodes were less than 10mm in diameter.
    These results suggest that normal or inflammatory swollen lymph nodes have color flow detectable with color Doppler imaging, and that metastasis to these nodes leads to the loss of color flow. We conclude that color Doppler imaging facilitates the diagnosis of cervical lymph node matastasis.
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  • Part 1: Posibility of malignant phenotype aquisition by long-term EGF treatment
    Hiroki NAGAYASU, Toshiyuki SHIBATA, Takashi KAWANO, Akira KONISHI, Kaz ...
    1995 Volume 41 Issue 8 Pages 682-689
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Tumor cells interact with host reactive cells through the processes of carcinogenesis and tumor growth. Apparently, cytokines and growth factors released from these surrounding host cells affect the malignant phenotypes of tumor cells. In this study, to elucidate the effects of epidermal growth factor (EGF) on malignant phenotype acquisition of tumor cells, we have examined the effects of EGF on the invasive and metastatic potential of regressor ER-1 cells, isolated from a spontaneously developed SHR mammary adenocarcinoma cell line.
    When ER-1 cells were pretreated with EGF for 24 hours (24h EGF ER-1), invasive ability was enhanced in an in vitro invasion assay using rat lung endothelial cells (RLE). However, the enhancement of the invasive activity of 24h EGF ER-1 was reversible and decreased timedependently. On day 4, the invasive activity returned to the level of non-treated ER-1 cells. However, ER-1 cells cultured in the presence of EGF for one month (1M EGF ER-1) maintained high and stable invasive ability for two months in the absence of EGF. When 24h EGF ER-1 cells (1 × 105) were intraperitoneally inoculated or intravenously injected into syngeneic SHR rats, 24h EGF ER-1 formed many tumor nodules in the mesentery or lung, as compaired with non-treated ER-1 cells. However, this invasive and metastatic potential of 24h EGF ER-1 cells disappeared on day 4. Otherwise, 1M EGF ER-1 cells maintained a high invasive and metastatic potential for two months. These results suggest that EGF enhances the invasive and metastatic potential of tumor cells and that tumor cells may acquire a stable malignant phenotype by long-term EGF treatment.
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  • 1. Comparative studies of vascularized and non-vascularized innervated forearm flaps for oral sensory restoration
    Junichi SATO, Shinya YASUMOTO, Koji KAWAGUCHI, Yoshiki HAMADA, Hideya ...
    1995 Volume 41 Issue 8 Pages 690-698
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Althogh a considerable number of flaps for reconstruction of the oral mucosa have been reported, each of these methods is associated with disadvantages such as loss of the sensations of touch. temperature, pain, and taste, the accumulation of food, a sensation of wearing dentures, loss of the sensations of mastication, and a strange feeling in the mouth. To overcome these problems, we developed a vascularized, innervated foream flap, which is elevated without removing the ramus communicans between the radial artery and vein and the vessels that nourish the lateral cutaneous nerves. We performed reconstruction of the tongue, gingiva, and mouth floor using vascularized innervated forearm flaps (three cases) and nonvascularized innervated forearm flaps (three cases).
    At 6 months postoperatively, sensation recovered slightly in one of three nonvascularized innervated forearm flaps, whereas the sensations of touch, pain and temperature recovered in all three vascularized innervated forearm flaps at 2 months postoperatively.
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  • Pathogenesis and surgical procedures
    Satoshi KIMIZUKA, Seishi ECHIGO, Yoshio IIZUKA, Kousaku MATSUDA, Tai Y ...
    1995 Volume 41 Issue 8 Pages 699-704
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    A clinicopathological study in 229 patients with postoperative maxillary cysts (POMC)(unilateral: 215 cases. bilateral: 14 cases) is described.
    The patients were treated at our hospital between 1979 and 1989. The age of the patients ranged from 18 to 72 years, and their average age was 45.2 years. The chief complaints of these patients were swelling and pain, and POMC were diagnosed based on clinical, radiologic and histopathologic findings.
    The patients were surgically treated by the following procedures: 1) extirpation of cysts (35 cases), 2) marsupialization to the inferior meatus (120 cases), and 3) radical operation according to the Caldwell-Lucs, method (88 cases).
    Histopathologic examination revealed various patterns of the cyst wall, including ciliated, cuboidal, squamous, and columnar epithelium, as well as a mixture of two or three kinds of these epithelial cells.
    Radiological examination using contrast media revealed that the from of cysts was either ovoid or irregular.
    One of the 243 cases showed recurrence. In this case, there was no passage between the cystic and nasal cavity. These findings suggest that sufficient marsupialization to the nasal cavity is important to ensure a favorable outcome.
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  • Narihiro KAMASAKI, Tsugio INOKUCHI, Joji SEKINE, Shinichi YOSHIDA
    1995 Volume 41 Issue 8 Pages 705-707
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    We describe the use of Crockett's method for surgical excision of an adenoid cystic carcinoma of the hard palate, which extended to the pterygoid region, in a 64-year-old Japanese woman.
    Crockett's method includes dissection of the masseter and temporal muscles following osteotomy of the zygomatic arch and the coronoid process to facilitate access to the pterygoid region. After excision of the tumor, the coronoid process and zygomatic arch are replaced, which enables restoration of the facial contours.
    The postoperative course of this patient was uneventful, without esthetic or functional disturbances. Neither tumor recurrence nor metastasis has been observed over a 2-year followup period. This method allows direct and safe access to the pterygoid region, without esthetic or functional disorders resulting from surgery.
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  • Morio TONOGI, Hiroyasu NOMA, Jun KANEKO, Yasuhiro OZAWA, Yoshinori IDE ...
    1995 Volume 41 Issue 8 Pages 708-710
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Arteriovenus malformation (AVM) is a vascular in which the arteries and vein communicate directly, without intervention of the capillaries.
    We report a recurrent case of AVM at the right pterygopalatine fossa and maxillary sinus in which transcatheter arterial embolization was already attempted several times.
    We performed surgical resection through the maxillary sinus and a good outcome was obtained.
    Resection of the anterior, lateral and posterior walls of the maxillary sinus with an ultrasonic bone saw resulted in a wide view of the posterior region of the maxillay can be obtained.
    The maxillary artery and descending palatine artery are then ligated, and the AVM is resected under adequate exposure.
    The advantages of the present method are ready and safe access to the pterigopalatine fossa and posterior side of the maxillary sinus and replacement of the wall of the maxillary sinus to its original position, so that aesthetic and functional changes do not occur.
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  • Yuji NARIMATSU, Shinichi YOSHIDA, Kazuo SANO, Tsugio INOKUCHI
    1995 Volume 41 Issue 8 Pages 711-713
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    A case of habitual luxation of the temporomandibular joints successfully treated by the Dautrey procedure is presented. The patient (a 21-year-old man) visited our hospital with a complaint of dislocation of his TMJs. Based on cephalometric analysis, the patient was classified as belonging to the long face group. Although he underwent Herrmann's procedure twice, dislocation recurred. Excessive elasticity of the buccal mucosa was considered to be one of the causes of recurrence after Herrmann's operation. Therefore, we performed Dautrey's procedure, which increases the vertical height of the eminence by zygomatic downfracture. Follow-up by three-dimensional CT revealed no reduction of the eminence. There has been no recurrent dislocation during a period of 22 months since surgery. The relation between long face and dislocation is also discussed.
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  • Masahiro MAKI, Mituo NAKASHIMA, Hironori MIGIYAMA, Nobuo NODA, Akira T ...
    1995 Volume 41 Issue 8 Pages 714-716
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Chronic drooling is a common problem in patients with neurological disorders, such as encephalitis, trauma, tumors, cerebral palsy, and mental retardation. Drooling is a major problem for the patient, for parents, and for the social enviroment.
    The methods for control of drooling include pharmacotherapy (anti-cholinergic drugs), external radiation, orofacial regulation therapy, and surgery (tympanic neurectomy, excision of the submandibular glands). However, the use of these methods should be carefully considered because each has its side effects and disadvantages.
    Bilateral submandibular duct relocation (BSDR), first reported by W.S. Crysdal in 1980, offers some advantages over previous therapeutic methods.
    We treated a 13-year-old girl with chronic drooling due to cerebral palsy with this technigue. The drooling improved in response to treatment with BSDR.
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  • Yousuke YAMADA, Takuji KIMURA, Masakazu MISAKI, Koji KISHIMOTO, Nagaak ...
    1995 Volume 41 Issue 8 Pages 717-719
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Recently, some patients, receiving long-term antipsychotic therapy, particularlywith phenothiazines, have been reported to die suddenly and unexpectedly. These patients may have underlying diseases of organs such as the liver, heart and endocrine glands. General anesthesia and surgery can be difficult in these patients. Therefore, care should be taken with regard to drug therapy (dosage and treatment period), laboratory findings, and general condition.
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  • Masaki HONDA, Atsushi NIIMI, Kenichiro HATA, Kunio HORIE, Iwai TOHNAI, ...
    1995 Volume 41 Issue 8 Pages 720-722
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Osseointegrated implants are useful in improving the masticatory function in patients who undergo mandibular reconstruction after tumor resection. However, many of these patients have thick, mobile soft tissue, which causes inflammation around the abutments.
    Although mucosal or skin grafts have been used to manage soft tissue problems that occur around the abutments, each have disadvantages: the donor site size is limited in mucosal grafts, and hair growth and keratinization cause discomfort with skin grafts.
    This paper describes a new method for soft tissue management using cultured mucosal grafs which overcome these disadvantages.
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  • Masayuki TAKATA, Norihiro MIYOSHI, Katsumi NISHIJIMA, Takayuki MORI
    1995 Volume 41 Issue 8 Pages 723-725
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    We statistically analyzed 98 cases of oro-maxillofacial traumas that were treated at the Department of Oral and Maxillofacial Surgery, Juzen General Hospital during the one year and nine months from April 1992 to December 1993.
    The results were as follows:
    1) The majority of patients were between the age of 0 and 4 years old (21%) and the male/female ratio was 3:2.
    2) Seventy-six patients (78%) visited our hospital within 2 days after injury and 51 cases (52%) visited our department directly after injury.
    3) The most common causes of oro-maxillofacial traumas were falling over, falling down, and collisions in males (41%) and traffic accidents in females (50%).
    4) The most common traumas were injury of the teeth and oral mucosa (33%).
    5) The majority of traumas were treated by suture only (27%).
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  • Masashi YAMANE, Nobuyuki TANAKA, Kenichi TOMITSUKA, Kazuhiko SUZUKI, H ...
    1995 Volume 41 Issue 8 Pages 726-728
    Published: August 20, 1995
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    We performed a clinico-statistical study of 617 teeth in 263 patients with traumatic injuries to the teeth who were treated at The First Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Tokyo Medical and Dental University, during 10 years between 1983 and 1992.
    Almost half of all injuries affected the maxillary incisors. The most frequent type of injuries was luxation (65%), followed by crown fracture, avulsion, root fracture, and crown root fracture.
    Eighty-nine percent of all teeth could be managed successfully by conservative treatment.
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  • Yaeko NAKAMURA, Hiroki MIYATE, Yuji SATO, Masayoshi MIYASAWA, Keigo KU ...
    1995 Volume 41 Issue 8 Pages 729-731
    Published: August 20, 1995
    Released on J-STAGE: September 13, 2011
    JOURNAL FREE ACCESS
    A case of mandibular Garré osteomyelitis caused by a wisdom tooth-germ is reported. The patient was a 10-year-old girl who visited the Department of Dentistry and Oral Surgery of Hakodate Goryoukaku Hospital, complaining of a bony swelling in the right cheek region. Radiographic examination showed a toothgerm of a wisdom tooth, focal overgrowth of bone around the mandibular angle and a radiolucent appearance suggesting a fistula between the toothgerm and the bone mass. The toothgerm was surgically enucleated, and the periosteal bony lesion was curetted. Microscopic examination revealed a toothgerm containing moderate infiltration of chronic inflammatory cells, and new bone with abundent osteoblasts.
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