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Tomida M, Ishimaru JI, Murayama K, Kajimoto T, Kurachi M, Era S, Shibata T. Intra-articular oxidative state correlated with the pathogenesis of disorders of the temporomandibular joint. Br J Oral Maxillofac Surg 2004; 42:405-9. [PMID: 15336765 DOI: 10.1016/j.bjoms.2004.06.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2004] [Indexed: 11/20/2022]
Abstract
We investigated the redox state of albumin in the synovial fluid from patients with temporomandibular joint (TMJ) disorders (TMD) to evaluate the relation between the cause of the TMD and the number of types of oxygen in synovial fluid. The albumin was fractionated into three components, human mercaptalbumin (HMA, reduced form) and two types human non-mercaptalbumin (HNA, oxidized form), by high-performance liquid chromatography (HPLC). The 63 patients were divided into three groups radiologically, and the ratios of the redox state of the synovial fluid in each group were compared. The fraction of HNA was significantly higher in patients with advanced disease than in patients with early disease. This indicates that the TMJ is affected by intra-articlular oxidative stress, and the severity of TMD correlates closely with the number of oxidative factors. Oxidative stress was thought to be responsible for the genesis of TMD.
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Affiliation(s)
- M Tomida
- Department of Physiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan.
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Matsuura H, Miyamoto H, Ishimaru JI, Kurita K, Goss AN. Costochondral grafts in reconstruction of the temporomandibular joint after condylectomy: an experimental study in sheep. Br J Oral Maxillofac Surg 2001; 39:189-95. [PMID: 11384115 DOI: 10.1054/bjom.2001.0622] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to investigate the effect of costochondral grafts in the temporomandibular joint (TMJ) in sheep. Five pure-bred adult Merino sheep were used. The condyle alone was resected and replaced with a costochondral graft from the 13th rib. The sheep were killed 3 months after operation. The range of jaw movements before and after operation and at death were recorded. The joints were examined radiologically, macroscopically, and histologically. A new condylar head with normal configuration and function developed. Histologically, the chondrocytes were arranged in a fashion similar to that of a normal joint. All inferior joint spaces showed fibrous adhesions between the condylar head and disc. This study showed that, when such grafts are used to replace the condyle in an otherwise normal sheep TMJ, they fused to the ramus and reconstituted a nearly normal, fully functional joint.
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Affiliation(s)
- H Matsuura
- Oral and Maxillofacial Surgery Unit, Dental School, The University of Adelaide, Adelaide, South Australia.
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Toida M, Balázs M, Mori T, Ishimaru JI, Ichihara H, Fujitsuka H, Hyodo I, Yokoyama K, Tatematsu N, Adány R. Analysis of genetic alterations in salivary gland tumors by comparative genomic hybridization. Cancer Genet Cytogenet 2001; 127:34-7. [PMID: 11408062 DOI: 10.1016/s0165-4608(00)00410-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In order to define and map chromosomal copy number alterations in salivary gland tumors (SGTs), a comparative genomic hybridization (CGH) technique was applied to two pleomorphic adenomas (PAs), one adenoid cystic carcinoma (ACC), and one basal cell adenocarcinoma (BCAC). The PAs exhibited regional copy number losses at 5q12.4-q14.1, 9q12-q21.13, and 16q11.2, as well as a gain at 20p12.1; among these, the losses at the 9q12-q21.11 and 16q11.2 regions were common to both PAs. The ACC showed overrepresentations of the entire regions of chromosomes 16 and 20, a regional gain at 22q12.3-q13.1, and no losses. In the BCAC, regional gains at 9p21.1-pter, 18q21.1-q22.3, and 22q11.23-q13.31 as well as losses at 2q24.2 and 4q25-q27 were seen; the gain at 22q12.3-q13.1 was common in both the ACC and the BCAC. These CGH data indicate that different genetic alterations are present in the different types of SGTs, and that the alterations involve several chromosomes. The discovery of common alterations in the same and/or different types of tumors might be important in the understanding of the development and progression of the SGTs.
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MESH Headings
- Adenoma, Pleomorphic/genetics
- Adenoma, Pleomorphic/pathology
- Aged
- Carcinoma, Adenoid Cystic/genetics
- Carcinoma, Adenoid Cystic/pathology
- Carcinoma, Basal Cell/genetics
- Carcinoma, Basal Cell/pathology
- Chromosome Aberrations
- Chromosome Banding
- Chromosomes, Human
- DNA, Neoplasm/analysis
- Female
- Humans
- Image Processing, Computer-Assisted
- In Situ Hybridization, Fluorescence
- Karyometry
- Male
- Middle Aged
- Salivary Gland Neoplasms/genetics
- Salivary Gland Neoplasms/pathology
- Translocation, Genetic
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Affiliation(s)
- M Toida
- Department of Oral and Maxillofacial Surgery, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu, 500-8705 Japan.
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Ishimaru JI, Ogi N, Mizuno S, Goss AN. Quantitation of chondroitin-sulfates, disaccharides and hyaluronan in normal, early and advanced osteoarthritic sheep temporomandibular joints. Osteoarthritis Cartilage 2001; 9:365-70. [PMID: 11399101 DOI: 10.1053/joca.2000.0397] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the relationship between synovial fluid, chondroitin sulfate disaccharide and hyaluronic acid to differing degrees of experimental temporomandibular joint (TMJ) osteoarthritis (OA). DESIGN Twenty-four merino sheep were divided into three groups and had different TMJ surgical procedures to produce OA. Group I; control (six sheep), Group II; disc perforation (nine sheep) and Group III; disc perforation and articular damage (nine sheep). Synovial fluid was collected initially and at sacrifice at 3 months. Chondroitin 4-sulfate, chondroitin 6-sulfate and hyaluronic acid were measured and correlated to the OA histologic score. RESULTS The chondroitin-sulfate levels were significantly increased (Group I to Group II P< 0.001; Group I to Group III P< 0.001), the hyaluronic acid levels decreased (Group I to Group II P< 0.01; Group I to Group III P< 0.01) with the increasing OA score. CONCLUSION Chondroitin-sulfate and hyaluronic acid show a correlation with surgically created TMJ osteoarthritis in sheep model.
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Affiliation(s)
- J I Ishimaru
- Department of Oral and Maxillofacial Surgery, Gifu Prefectural Gifu Hospital, Japan.
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Mizui T, Ishimaru JI, Miyamoto K, Toida M. Malignant transformation of a gigantic pleomorphic adenoma of the submandibular gland: a case report. J Oral Maxillofac Surg 2000; 58:1422-4. [PMID: 11117694 DOI: 10.1053/joms.2000.18281] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- T Mizui
- Department of Oral and Maxillofacial Surgery, Gifu Prefectural Gifu Hospital, Japan.
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Ishimaru JI, Oguma Y, Goss AN. Matrix metalloproteinase and tissue inhibitor of metalloproteinase in serum and lavage synovial fluid of patients with temporomandibular joint disorders. Br J Oral Maxillofac Surg 2000; 38:354-9. [PMID: 10922168 DOI: 10.1054/bjom.2000.0306] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We measured matrix metalloproteinases (MMPs) and tissue inhibitor of metalloproteinases (TIMP) in temporomandibular joint (TMJ) disorders. All patients were fully investigated, by visual analogue pain scores, plain radiographs and double-contrast arthrotomograms. The patients were grouped according to whether or not they were in pain. There were 35 patients with painful joints; 16 painless crepitating joints and 10 with chronic closed locked joints. A further group of 9 volunteers with no symptoms of TMJ abnormalities were used as controls. We found that synovial fluid concentration of MMP-3 was significantly increased (1117.2 (164.0) ng/ml) (P< 0.05) in the painful group compared with controls (436.2 (94.8) ng/ml) and with the two groups with painless TMJ (475.0 (113. 0) ng/ml/crepitation, and 516.0 (115.1) ng/ml/closed locked joints). MMP-1 and TIMP-1 were not recordable in most joints, and the serum concentrations of MMP-1, MMP-3, and TIMP-1 were similar to those in controls in all groups. There was no correlationship between MMP-3 concentration and joint morphology as shown by plain radiographs and double contrast arthrotomograms. These findings indicate that the synovia of painful joints are inflamed.
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Affiliation(s)
- J I Ishimaru
- Department of Oral and Maxillofacial Surgery, Gifu Prefectural Gifu Hospital, Japan
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Miyamoto H, Kurita K, Ogi N, Ishimaru JI, Goss AN. Effect of limited jaw motion on ankylosis of the temporomandibular joint in sheep. Br J Oral Maxillofac Surg 2000; 38:148-53. [PMID: 10864712 DOI: 10.1054/bjom.1999.0206] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to investigate the effect of limited movement of the jaw on ankylosis of the temporomandibular joint (TMJ). Eighteen adult sheep were divided into two groups. In Group 1, the temporal and condylar articular surfaces were removed together with the disc on the right. In Group 2, we did the same procedures but in addition the jaw movements were limited by a wire. One sheep was killed just after the operation, four at one month, and four at three months, in each group. The range of jaw movements preoperatively and at the time of death were recorded. The joints were examined radiologically, macroscopically, and histologically. We used a scoring system to assess the radiological changes and histological extent of ankylosis. At one month, the joint spaces were filled with fibrous tissue, but a small joint space existed in all four joints in Group 1. In Group 2, there was full ankylosis in two joints and partial ankylosis in two joints. At three months, similar ankylotic changes were seen in both groups. The histological score for ankylosis at one month showed that those in Group 2 were significantly more ankylosed than in Group 1 (P<0.01). The range of jaw movements was more limited at one month in Group 2, both vertically and to the left, and was significantly decreased in both groups (P<0.01) at three months. Limitation of jaw motion hastens the progress of TMJ ankylosis.
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Affiliation(s)
- H Miyamoto
- Oral and Maxillofacial Surgery Unit, Department of Dentistry, The University of Adelaide, Australia
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Abstract
Unilateral condylectomy was performed on five young adult sheep. The animals were killed at three months and both joints and the excised condyles were examined macroscopically and histologically. All five showed pronounced regeneration of the condylar head on the operated side. The articular surface was fibrous and fused to the disc. Four of the five opposite joints showed medial remodelling. Young sheep have a higher regenerative capability than human adults of equivalent age, and similar reactions to those of children.
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Affiliation(s)
- K Miyamoto
- Department of Oral and Maxillofacial Surgery, Gifu University School of Medicine, Tsukasa-machi, Japan.
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Miyamoto H, Kurita K, Ogi N, Ishimaru JI, Goss AN. The role of the disk in sheep temporomandibular joint ankylosis. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1999; 88:151-8. [PMID: 10468457 DOI: 10.1016/s1079-2104(99)70109-5] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The purpose of this study was to determine the role of the disk in intraarticular ankylosis of the temporomandibular joint. STUDY DESIGN Twelve adult sheep were divided into 2 groups. In group 1, removal of the temporal and condylar articular surfaces was performed on the right temporomandibular joint and the disk was maintained; in group 2, removal of the articular surfaces and diskectomy were performed on the right temporomandibular joint. One sheep from each group was killed just after surgery and 5 sheep from each group were killed at 3 months. The joints were examined radiologically, macroscopically, and histologically. The range of jaw movements was recorded preoperatively and at sacrifice. RESULTS Each of 2 sheep in group 2 had lost 4% of their body weight by 3 months; all of the other sheep maintained or increased their weight. The range of jaw motion to the right was significantly lower in group 2 than in group 1 (P<.01). In group 1, fibrous repair of the articular surface and regeneration of the condylar head was seen. In group 2, each of the joints showed a total fibrous ankylosis with some calcification. There was a statistically significant difference in radiologic score between the groups (P<.0001). Histologic scores for group 1 demonstrated significantly lower scores on the degree of ankylosis scale and degree of calcification scale (P<.0001). CONCLUSIONS This study showed that the presence of the disk prevented the development of fibrous intraarticular ankylosis of the temporomandibular joint.
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Affiliation(s)
- H Miyamoto
- Department of Dentistry, University of Adelaide, Australia
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Ogi N, Kurita K, Ishimaru JI, Goss AN. Short-term effect of the use of a frozen-stored disc allograft for repair of the osteoarthritic sheep temporomandibular joint: a preliminary report. J Oral Maxillofac Surg 1999; 57:139-44; discussion 144-5. [PMID: 9973121 DOI: 10.1016/s0278-2391(99)90227-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE The purpose of this experimental study was to evaluate the initial effect of a frozen-stored disc allograft on the osteoarthritic sheep temporomandibular joint (TMJ). MATERIALS AND METHODS Bilateral osteoarthritis was induced in the TMJ of four sheep. Three months later, unilateral discectomy and frozen-stored disc allograft replacement were performed. The donor disc had been obtained from a healthy animal at killing. The disc was stored in a deep freezer at -70 degrees C for 1 month and thawed just before grafting. The contralateral joints were undisturbed and served as a control at 3 months. At 6 months after the initial procedure, 3 months after the repair, the four sheep were killed. RESULTS All four grafted discs were perforated and displaced. In the repaired joints, the condylar articular surface was partly denuded in some areas, and part of the surface showed fibrous repair. The control joints showed osteoarthritic changes. CONCLUSION Frozen-stored disc allograft is not a satisfactory interpositional material in the osteoarthritic sheep TMJ.
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Affiliation(s)
- N Ogi
- Second Department of Oral and Maxillofacial Surgery, Aichi-Gakuin University School of Dentistry, Nagoya, Japan
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Abstract
PURPOSE The purpose of this study was to test the effect of repeated injections of hyaluronic acid (HA) on the sheep model of osteoarthrotic temporomandibular joint (TMJ) disease. MATERIALS AND METHODS Bilateral osteoarthrosis (OA) was induced in the TMJs of six sheep. HA was injected into one joint on 7, 10, 14, 17, and 21 days postoperatively. Normal saline was injected into the contralateral joint. Three sheep were killed at 1 month and 3 at 3 months. The joints were removed and examined macroscopically and histologically. A special scoring system was applied following the modified Mankin's score to evaluate the histologic changes. RESULTS The control group showed severe osteoarthrotic changes in the condyle, deviation in form from normal morphology, and marked marrow fibrosis. The HA-treated group showed less deviation from normal condylar morphology. The histologic scores at 1 month were HA 12.6, control 24.2 (P < .001), and at 3 months were HA 6.9, control 18.9 (P < .001). There was a significant difference in osteoarthrotic changes between HA-treated and control TMJs, with the HA-treated TMJs having less severe changes. CONCLUSION Repeated intraarticular injections of HA into a sheep TMJ with experimentally induced OA minimizes the extent of osteoarthrotic change when compared with the control joint. Thus, HA may have a role in preventing the progression of TMJ OA.
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Affiliation(s)
- H Neo
- Oral and Maxillofacial Surgery Unit, The University of Adelaide, South Australia
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Abstract
A simple and easy cryosurgical method to treat intraoral mucous cysts is described. Twelve female and six male patients, with mucous cysts on the lower lip and the tip of the tongue, were treated by direct application of liquid nitrogen with a cotton swab. Each lesion was exposed to four or five cycles composed of freezings of 10-30 s and thawings of double the freezing times. No anesthesia was required. All lesions had disappeared completely 2-4 weeks after one or two treatment courses of cryosurgery. In all cases, neither scarring nor recurrence was noted during the 6 months to 5 years of follow-up.
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Affiliation(s)
- M Toida
- Department of Oral Surgery, Ibi General Hospital
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Abstract
A case of an unusual foreign body (a tip fragment from a plastic chopstick) embedded in one of two unerupted supernumerary teeth in the premaxillary region of a 12-year-old Japanese boy is presented.
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Affiliation(s)
- M Toida
- Department of Oral and Maxillofacial Surgery, Gifu University School of Medicine, Japan
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Abstract
The effect of surgically perforating the mandibular condyle to allow synovial fluid to contact the marrow was examined in 5 sheep temporomandibular joints. The surgical defect showed replacement of the marrow with fibro-osseous tissue and subcortical cysts. A vertical, central osteophyte emerged from the perforation, causing attenuation or perforation of the disc and temporal surface proliferation. These changes were radiographically and histologically similar to advanced osteoarthritis. This supports the concept that intraarticular micro or macrofracture may result in osteoarthritis.
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Affiliation(s)
- J I Ishimaru
- Department of Stomatology, Gifu Municipal Hospital, Japan
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