Bulletin of Tokyo Dental College最新文献

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Survival Rate of Metal Crowns Covered by Public Health Insurance System in Japan: A Quality-of-Care Perspective. 日本公共医疗保险系统承保的金属牙冠的存活率:医疗质量视角
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-12-11 Epub Date: 2024-11-15 DOI: 10.2209/tdcpublication.2024-0002
Koichi Yoshino, Koji Ito, Masahiko Kuroda, Naoki Sugihara, Hideshi Sekine
{"title":"Survival Rate of Metal Crowns Covered by Public Health Insurance System in Japan: A Quality-of-Care Perspective.","authors":"Koichi Yoshino, Koji Ito, Masahiko Kuroda, Naoki Sugihara, Hideshi Sekine","doi":"10.2209/tdcpublication.2024-0002","DOIUrl":"10.2209/tdcpublication.2024-0002","url":null,"abstract":"<p><p>Rather than focusing solely on cost-effectiveness and accessibility, it is also important to assess the quality of treatments available under Japan's Public Health Insurance System (PHIS). The purpose of this retrospective study was to assess the survival rate of metal crowns used to replace first molars in a clinical setting. Only metal crowns made of 12% gold-silver-palladium alloy placed on first molars and available under the PHIS were included. The endpoint was removal/separation of a crown or extraction of the tooth. A total of 603 crowns fitted at 20 dental offices were investigated. During the observation period, 133 of these crowns showed failure. The crown survival rate was 92.5% at 5 years, 80.8% at 10 years, 70.5% at 15 years, and 54.0% at 20 years as estimated using the Kaplan-Meier method. The estimated mean survival period was 20.6 years. The analysis revealed 3 risk factors: male (hazard ratio [HR]: 1.51), low gonial angle (HR: 1.74), and deep pockets around the abutment teeth (HR: 1.53). The main reasons for crown failure were extraction of an abutment tooth (22.6%), separation from an abutment tooth (21.8%), root fracture (18.8%), and caries (15.8%). The results showed that metal crowns available under the PHIS at dental offices have a long survival period, and that plaque control and measures to prevent separation from the abutment teeth are important for their longterm survival.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"65-73"},"PeriodicalIF":0.5,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Healing Process of Old Mandibular Condylar Head Fractures: A Report of Two Cases. 下颌骨髁状突陈旧性骨折的愈合过程:两个病例的报告
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-12-11 Epub Date: 2024-11-15 DOI: 10.2209/tdcpublication.2024-0009
Shiro Kubo
{"title":"Healing Process of Old Mandibular Condylar Head Fractures: A Report of Two Cases.","authors":"Shiro Kubo","doi":"10.2209/tdcpublication.2024-0009","DOIUrl":"10.2209/tdcpublication.2024-0009","url":null,"abstract":"<p><p>A condylar head fracture in the mandible is often misdiagnosed as a contusion of the temporomandibular joint (TMJ). Moreover, they are often overlooked by general practitioners as the fragments are small, making them difficult to identify. This report describes 2 cases of old mandibular condylar head fractures: one involving an 84-year-old woman referred to our dental office with suspected medication-related osteonecrosis of the jaw; and another involving a 23-year-old man who visited with the chief complaint of slight pain in the left TMJ. An old condylar head fracture with dislocation or displacement was coincidentally found on panoramic radiographs obtained during dental treatment in both cases. No disturbances in mouth opening or masticatory forces were observed in either case. Analysis of injury status and imaging with X-rays and computed tomography revealed that the relationship between the dislocated/displaced condylar head and the mandibular fossa changed as the bone structure and muscle positions stabilized.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"91-97"},"PeriodicalIF":0.5,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gingival Necrosis Associated with Septic Shock of Unknown Origin in Patient with Systemic Lupus Erythematosus: A Case Report. 系统性红斑狼疮患者不明原因脓毒性休克引发的牙龈坏死:病例报告
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-12-11 Epub Date: 2024-11-15 DOI: 10.2209/tdcpublication.2024-0025
Risako Mikami, Tetsuya Saito, Ruriko Mizuno, Yuji Kabasawa, Koichiro Matsuo
{"title":"Gingival Necrosis Associated with Septic Shock of Unknown Origin in Patient with Systemic Lupus Erythematosus: A Case Report.","authors":"Risako Mikami, Tetsuya Saito, Ruriko Mizuno, Yuji Kabasawa, Koichiro Matsuo","doi":"10.2209/tdcpublication.2024-0025","DOIUrl":"10.2209/tdcpublication.2024-0025","url":null,"abstract":"<p><p>A 38-year-old woman with a history of systemic lupus erythematosus presented at our university hospital with fever, fatigue, and oral pain and was urgently admitted based on a diagnosis of septic shock. Initially, dental infection was suspected based on the symptoms and clinical presentation of purpura accompanied by severe tenderness along the marginal gingiva in the maxilla and mandible. However, subsequent investigations, including an oral examination, radiographic studies, and blood cultures, ruled out dental infection as the cause of the septic shock. The patient received antibiotic therapy and was discharged on Day 16 after admission, with no definitive source of the infection yet being identified. The gingiva around where the purpura was observed on Day 1 gradually necrosed and detached, leading to ulcer formation by Day 8 and gingival recession by Day 15. Gingival necrosis was attributed to septic shock-induced neutropenia and circulatory disturbances, indicating the severity of the systemic conditions. Follow-up after discharge revealed no recurrence. This case underscores the importance of recognising oral symptoms as potential precursors to severe systemic conditions such as septic shock. Timely intervention and interdisciplinary collaboration are essential in effectively managing such cases. Further research is warranted to elucidate the relationship between oral health and systemic diseases to enable clinicians to provide optimal patient care.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"83-90"},"PeriodicalIF":0.5,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Giant Sialolithiasis in Submandibular Gland Growing over Extended Period: A Case Report. 颌下腺长期生长的巨大霰粒肿:病例报告
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-12-11 Epub Date: 2024-11-15 DOI: 10.2209/tdcpublication.2024-0010
Masae Yamamoto, Masashi Iwamoto, Akira Katakura
{"title":"Giant Sialolithiasis in Submandibular Gland Growing over Extended Period: A Case Report.","authors":"Masae Yamamoto, Masashi Iwamoto, Akira Katakura","doi":"10.2209/tdcpublication.2024-0010","DOIUrl":"10.2209/tdcpublication.2024-0010","url":null,"abstract":"<p><p>Sialolithiasis is a common disease of the salivary glands. This report describes a rare case of a submandibular gland sialolithiasis that grew over an extended period. The patient was a 72-year-old woman who presented with a mass in the right submandibular gland that had remained untreated for approximately 34 years. She had noticed the mass from the beginning, but had ignored it as it had caused no pain. She was eventually referred to our hospital, however, because panoramic X-ray images taken at another facility showed that it had grown over the previous 10 years. Extraoral findings at our clinic revealed a hen egg-sized, elastic, hard mass in the right submandibular region, strongly suggesting intraglandular sialolithiasis of the right submandibular gland. Extraction of the right submandibular gland was performed under general anesthesia. The size of the sialolith inside the submandibular gland was 42×22×15 mm, with a visually rough and yellowish-white surface. Histopathological findings showed a lamellar structure with basophilically stained bacteria in the hard material at the core, a finding typical of sialoliths. Therefore, the diagnosis was intraglandular sialolithiasis of the right submandibular gland. This report describes a case of a rare giant sialolith located within the right submandibular gland.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"75-82"},"PeriodicalIF":0.5,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of Circulating Monocytes and Periodontopathic Bacteria in Pathophysiology of Rheumatoid Arthritis. 循环单核细胞和牙周病菌在类风湿关节炎病理生理学中的作用
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-12-11 Epub Date: 2024-11-15 DOI: 10.2209/tdcpublication.2024-0012
Noriyuki Seta
{"title":"Role of Circulating Monocytes and Periodontopathic Bacteria in Pathophysiology of Rheumatoid Arthritis.","authors":"Noriyuki Seta","doi":"10.2209/tdcpublication.2024-0012","DOIUrl":"10.2209/tdcpublication.2024-0012","url":null,"abstract":"<p><p>Rheumatoid arthritis (RA) is characterized by chronic inflammation in the synovial membrane, leading to matrix destruction of cartilage and bone. While various types of immune cell are found in inflamed synovium in RA, macrophages and osteoclasts also play important roles in joint destruction. Peripheral blood monocytes migrate to synovial tissue and differentiate into macrophages and osteoclasts in RA. Synovial macrophages are classified into two subsets: M1 (proinflammatory macrophages) or M2 (anti-proinflammatory macrophages). Human circulating monocytes have also been divided into three subsets according expression level of CD14 and CD16: CD14<sup>+</sup>CD16<sup>-</sup> (classical); CD14<sup>bright</sup>CD16<sup>+</sup> (intermediate); or CD14<sup>dim</sup>CD16<sup>+</sup> (non-classical). Many recent studies have investigated the involvement of each subset of synovial macrophages and circulating monocytes in the pathophysiology of RA. On the other hand, several distinct human cell populations originating in circulating monocytes have the capacity to differentiate into non-phagocytic cells, including endothelial cells and adipocytes. This review summarizes the role of circulating monocytes in the pathophysiology of RA as precursor cells of not only phagocytes, such as macrophages and osteoclasts, but also non-phagocytes, such as endothelial cells and adipocytes. Furthermore, there is a growing body of evidence showing a significantly positive association between periodontopathic bacterial infection and the pathophysiology of RA. Therefore, the role of periodontopathic bacteria in the development of RA is also discussed.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"55-64"},"PeriodicalIF":0.5,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Case of Anterior Single Tooth Implant with Fractured Zirconia Abutment due to Trauma. 一例因外伤导致氧化锆基台断裂的前单牙种植体病例。
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-09-06 Epub Date: 2024-05-15 DOI: 10.2209/tdcpublication.2023-0028
Mamoru Yotsuya, Masahiro Nakano, Kazuhiro Umehara, Shigeki Awazawa, Takao Nomura, Nobuyuki Kuribayashi, Masao Yoshinari, Hideshi Sekine
{"title":"A Case of Anterior Single Tooth Implant with Fractured Zirconia Abutment due to Trauma.","authors":"Mamoru Yotsuya, Masahiro Nakano, Kazuhiro Umehara, Shigeki Awazawa, Takao Nomura, Nobuyuki Kuribayashi, Masao Yoshinari, Hideshi Sekine","doi":"10.2209/tdcpublication.2023-0028","DOIUrl":"10.2209/tdcpublication.2023-0028","url":null,"abstract":"<p><p>In recent years, a wide variety of materials have been used in dental implant treatment. In selecting the superstructures and abutments to be used it is important to consider their potential effect on the stability and durability of the planned implant. Excessive force applied to an implant during maintenance commonly results in complications, such as fracture of the superstructure or abutment, and loosening or fracture of the screws. This report describes a case of implant treatment for a 23-year-old man with esthetic disturbance due to trauma to the maxillary anterior teeth. The left maxillary central incisor could not be conserved due to this trauma, which had been caused by a traffic accident. After extraction, the tooth was restored with an anterior bridge. The crown of the left maxillary lateral incisor was fractured at the crown margin and, at the patient's request, implant treatment was selected as the restorative treatment for the missing tooth. A thorough preoperative examination was performed using placement simulation software. One titanium screw-type implant was placed in the maxillary left central incisor under local anesthesia. An all-ceramic crown with a zirconia frame was placed as a screw-fixed direct superstructure. At one year postoperatively, however, the superstructure and abutment became detached due to trauma. The fractured zirconia abutment was removed and replaced with a remanufactured abutment and superstructure. The patient has reported no subsequent dental complaint over the last 11 years. In this case, a surface analysis of the fractured zirconia abutment was performed. The scanned images revealed a difference in the fracture surfaces between the tensile and compressive sides, and electron probe microanalysis demonstrated the presence of titanium on the fracture surface. It was inferred that the hard zirconia abutment had scraped the titanium from the internal surface of the implant.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"31-40"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140945288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oral Health Status of Workers in Acid Exposure Environments in Japan: A Cross-sectional Study. 日本酸暴露环境中工人的口腔健康状况:横断面研究
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-09-06 Epub Date: 2024-05-15 DOI: 10.2209/tdcpublication.2023-0034
Seitaro Suzuki, Koichi Yoshino, Atsushi Takayanagi, Yuki Onose, Atsushi Ohyama, Tomoaki Shibuya, Ryouichi Satou, Takako Eguchi, Hideyuki Kamijo, Naoki Sugihara
{"title":"Oral Health Status of Workers in Acid Exposure Environments in Japan: A Cross-sectional Study.","authors":"Seitaro Suzuki, Koichi Yoshino, Atsushi Takayanagi, Yuki Onose, Atsushi Ohyama, Tomoaki Shibuya, Ryouichi Satou, Takako Eguchi, Hideyuki Kamijo, Naoki Sugihara","doi":"10.2209/tdcpublication.2023-0034","DOIUrl":"10.2209/tdcpublication.2023-0034","url":null,"abstract":"<p><p>Although the working environment may play a role in dental acid erosion, few studies have been conducted on this in Japanese workers in recent years. The purpose of this study was to investigate oral health status, including dental erosion, in workers who may have been exposed to an acidic environment. The study participants were recruited by an online research company. Oral examinations and questionnaire surveys were conducted on this cohort in January 2023. A total of 144 participants were finally included. Workers exposed to an acidic environment showed more use of protective equipment and underwent more dental examinations at the workplace (p<0.001). Possible dental erosion was observed in only 3 out of the total of 144 participants (2.1%), however. No significant difference was observed in the number of teeth, caries experience, or dental erosion according to the number of years of acid exposure in the workplace. The results of this study suggest that acid exposure exerts a relatively small effect on the oral health status of workers in Japan.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"47-52"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140945316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Case Report on Unstable Angina Pectoris Manifesting as Orofacial Pain. 表现为口面部疼痛的不稳定型心绞痛病例报告
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-09-06 Epub Date: 2024-08-15 DOI: 10.2209/tdcpublication.2024-0005
Jun Kawaguchi, Tatsuya Ichinohe
{"title":"A Case Report on Unstable Angina Pectoris Manifesting as Orofacial Pain.","authors":"Jun Kawaguchi, Tatsuya Ichinohe","doi":"10.2209/tdcpublication.2024-0005","DOIUrl":"10.2209/tdcpublication.2024-0005","url":null,"abstract":"<p><p>Cardiac ischemia, such as angina pectoris or myocardial infarction, is associated with pain in the oral cavity, lower jaw, head, or neck, or spanning from the left upper arm to the shoulder. When presenting to a dentist, however, appropriate treatment for such patients is often delayed, as dental problems are usually the first to be suspected when the chief complaint is orofacial pain. This report describes a case of a 70-year-old woman who was aware of pain and a burning sensation in the oral cavity upon exertion for a year prior to presenting at our clinic. She had been examined by her family physician, an otolaryngologist, and another dentist, none of whom found any abnormalities other than suspected periodontal disease and caries, for which she was treated. An examination at our clinic revealed no abnormal dental findings that would have been consistent with the mandibular pain, however. Although no chest symptoms were reported, pain was elicited on exertion, suggesting cardiogenic toothache. An immediate referral to a cardiologist was therefore made on the same day. The patient visited the cardiology department of the University Hospital of Tokyo Dental College 6 days later. The increased frequency of symptoms on exertion suggested unstable angina, and the patient was admitted to the emergency department on the same day. Emergency coronary angiography showed that right coronary artery #1 was 99% stenosed proximally (highly calcified plaque). The diagnosis was unstable angina pectoris, with the right coronary artery #1 as the responsible lesion, and percutaneous coronary angioplasty was performed on the same day. Subsequently, all the orofacial pain disappeared, confirming unstable angina as the cause. The pain characteristics in this case were consistent with pain associated with cardiac ischemia, which led to the immediate referral to the cardiology department. In cases of toothache associated with cardia ischemia, it is essential to seek cardiological care as soon as possible.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"41-46"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141983500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cyclic Fatigue Properties of Titanium Alloys for Application in Dental Implants. 用于牙科植入物的钛合金的循环疲劳特性。
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-03-07 Epub Date: 2024-02-15 DOI: 10.2209/tdcpublication.2023-0025
Tomofumi Takano, Masao Yoshinari, Kaoru Sakurai, Takayuki Ueda
{"title":"Cyclic Fatigue Properties of Titanium Alloys for Application in Dental Implants.","authors":"Tomofumi Takano, Masao Yoshinari, Kaoru Sakurai, Takayuki Ueda","doi":"10.2209/tdcpublication.2023-0025","DOIUrl":"10.2209/tdcpublication.2023-0025","url":null,"abstract":"<p><p>The present study investigated the cyclic fatigue properties of titanium alloys (Ti-6Al-4V and Ti-6Al-7Nb) as implant materials and compared their properties with those of commercially pure titanium. Ti-6Al-4V and Ti-6Al-7Nb cylinders with diameters of 3.0 mm were examined. The surfaces of the cylinders were roughened by sand blasting with alumina particles and acid etching. Static and cyclic tests were performed according to ISO 14801:2016. The yield force in the static test (YS) was measured in 5 specimens of each alloy using a universal testing machine. The yield force in a cyclic test (YC) was measured in 20 specimens of each alloy using the staircase method, which involved applying a cyclic load at a frequency of 10 Hz for 10<sup>6</sup> cycles. After the cyclic loading tests, cross-sections of the specimens were examined under an optical microscope. The YS values for Ti-6Al-4V and Ti-6Al-7Nb were 1463 N±93 N and 1405 N±79 N, respectively, and the YC values were 870 N±58 N and 853 N±202 N, respectively. Microscopic observation revealed cracks on the tensile side of some of the specimens, including run outs and failures. The results of this study suggest that the YC values for Ti-6Al-4V and Ti-6Al-7Nb were 40% less than those for YS. The yield force of Grade-4 Cp-Ti significantly decreased after cyclic loading. The YC values for Ti-6Al-4V and Ti-6Al-7Nb were approximately 900 N, which was markedly greater than that for commercially pure, Grade-4 titanium (700 N).</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"1-9"},"PeriodicalIF":0.5,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139736366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Entire Dental Arch Mesial Movement after Extraction of Maxillary Right Central Incisor due to Root Fracture Treated with Temporary Anchorage Devices. 因牙根折断而拔除上颌右中切牙并使用临时锚定装置后的整个牙弓中轴运动。
IF 0.5
Bulletin of Tokyo Dental College Pub Date : 2024-03-07 Epub Date: 2024-02-15 DOI: 10.2209/tdcpublication.2023-0017
Noriko Sano, Ryota Sano, Junji Ohtani, Saiji Shimoe, Hiroki Nikawa, Takeshi Murayama, Masato Kaku
{"title":"Entire Dental Arch Mesial Movement after Extraction of Maxillary Right Central Incisor due to Root Fracture Treated with Temporary Anchorage Devices.","authors":"Noriko Sano, Ryota Sano, Junji Ohtani, Saiji Shimoe, Hiroki Nikawa, Takeshi Murayama, Masato Kaku","doi":"10.2209/tdcpublication.2023-0017","DOIUrl":"10.2209/tdcpublication.2023-0017","url":null,"abstract":"<p><p>This case report describes a 19-year-old woman with skeletal Class I crowding and an unsalvageable maxillary right central incisor. She visited our clinic with the chief complaint of mobility of the maxillary right central incisor due to a traffic accident. After extraction of the maxillary right central incisor, the space was closed orthodontically. All the maxillary right teeth were moved mesially with an elastic chain attached to a palatal lever arm which was connected to palatal temporary anchorage devices (TADs). After orthodontic treatment had been completed, the maxillary right lateral incisor and peg-shaped left lateral incisor were restored with a porcelain laminate veneer. The maxillary right canine was morphologically reshaped and built up with composite resin. Consequently, esthetically ideal occlusion and functional lateral guidance with uncontacted molars were obtained. These results show that mesial movement of the entire dental arch with TADs is a useful orthodontic treatment option in patients in whom the maxillary central incisor has been extracted.</p>","PeriodicalId":45490,"journal":{"name":"Bulletin of Tokyo Dental College","volume":" ","pages":"19-27"},"PeriodicalIF":0.5,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139736367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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