Journal of Osaka Dental University最新文献

{"title":"Exposure to isopropyl alcohol in the air during disinfection Report II","authors":"Yasushi Sakuma, Masayo Nakata, Hiroki Shibata, Y. Momota","doi":"10.18905/JODU.50.1_37","DOIUrl":"https://doi.org/10.18905/JODU.50.1_37","url":null,"abstract":"","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"50 1","pages":"37-39"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67892185","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}

{"title":"Histopathological study of experimental tooth movement in a rat model of type II diabetes mellitus","authors":"H. Matsushita, K. Tominaga, A. Tanaka, N. Matsumoto","doi":"10.18905/JODU.50.1_13","DOIUrl":"https://doi.org/10.18905/JODU.50.1_13","url":null,"abstract":"It is generally thought that orthodontic treatment should be avoided in patients with diabetes mellitus. However, the number of diabetes patients in Japan is increasing and there are circumstances when orthodontic treatment needs to be done. According to the 2012 National Health and Nutrition Survey, about 9.5 million people in Japan had a National Glycohemoglobin Standardization Program (NGSP) HbA1c level of 6.5%, an indicator of diabetes, and 11.0million people had levels of 6.0% to less than 6.5%, indicating prediabetes. Thus, a total of 20.5 million people, or about 16% of the Japanese population, have diabetes or pre -diabetes. Juvenile diabetes has also been increasing in recent years, with a corresponding increase in the number of these children needing orthodontic treatment. However, the phenomena that will occur when orthodontic treatment is actually performed on people with diabetes are not understood at all. Therefore, elucidation of what may occur histopathologically should be of benefit in responding to the needs of these patients. Goto-Kakizaki (GK) rats are an animal model of diabetes that was developed fromWistar rats. 7 GK rats are non-obese rats in which a hyperglycemic condiHistopathological study of experimental tooth movement in a rat model of type II diabetes mellitus","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"50 1","pages":"13-21"},"PeriodicalIF":0.0,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67888814","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}

{"title":"A 10-year clinical study on osteomyelitis of the jaws","authors":"Shinya Watanabe, R. Iwai, Akio Himejima, Teruyoshi Hayashi, K. Tsuji, Y. Matsushima, A. Fukuda, T. Sano, Koji Yamada, Kazuhiro Matsumoto, H. Yoshida, T. Iseki, S. Morita","doi":"10.18905/JODU.49.2_197","DOIUrl":"https://doi.org/10.18905/JODU.49.2_197","url":null,"abstract":"Refractory and atypical cases of osteomyelitis of the jaws are increasing with the emergence ot resistant bacteria. Treatment ot this condition can be agonizing. Here, we report a study conducted of 109 cases diagnosed with osteomyelitis of the jaws at the First Department of Oral and Maxillofaciat Surgery, Osaka Dental University Hospital during the past 1O years. The cases were classified as Type A (acute suppurative osteomyelitis), 5 cases ; Type B (chronic suppurative osteomyelitis), 76 cases ; and Type C (chronic diffuse sclerosing os-","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"197-204"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67887687","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}

{"title":"Prediction of orthodontic treatment results","authors":"K. Inami, Yih-Wen Chen, N. Matsumoto","doi":"10.18905/JODU.49.2_229","DOIUrl":"https://doi.org/10.18905/JODU.49.2_229","url":null,"abstract":"With the recent development of three-dimensional (3D) technologies and the advent of orthodontic anchor screws that do not require patient intervention, accurate predictions of treatment re$ults have become highly achievable. We reviewed the history of setting treatment goals and estimating treatment based on lateral roentgenographic cephalograms and study models, and asse$sed the validity of this approach. The subjects of this study were 39 Caucasian male and female patients (mean age of approximately 14 years) who had maxillary protrusion with a mean ANB angle ot 5.5\" and vvho had received orthodontic treatment using the same procedure. We compared the following parameters : results of measurements based on cephatometrlc tracing betore and after treatment ; treatment goals ; the planned treatment duration established at the initiation of treatment ; the actual treatment duration at each treatment stage ; and the validity ot the treatment duration and outcome predictions. Comparison of the ANB angle before and after treatment showed that the value decreased. There were no signiticant difierences in the treatment goals or results. The distances from Ul to NA showed no diiferences between the objective value before treatment and the actual value after treatment. Atthough comparison of preoperative and postoperative values for mandibular Ll to NB showed a decrease after surgery, there was no difference between the objective and post-operative value. Although the FMA tended to decrease slightly, no significant difference was found. Even though there was a margin ot error at each of the treatment steps, there were no significant differences between the number of treatment months planned before treatment and the actual number required. The decreased ANB angle and lack ot differences between the objectives and the results suggest that treatment goal$ close to the target had been achieved. Because no significant differences were found between the treatment duration planned betore surgery and the actual duration, the findings suggest that the time ot treatment could be estimated at the initiation ot treatment. The use of the treatment procedure described in this study was valid for predicting the treatment period as wel1 as the treatment goals pertaining to the ANB angle and the positions of the maxiilary and mandibular anterior teeth. The slight decrease in the FMA and the dynamics ef the maxi11ary anterior teeth after treatment suggest that the procedure described in this study was effective in the treatment of maxilLary protrusion. (J Osaka Dent Univ 2015 ; 49 : 229-235}","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"229-235"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67889172","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}

{"title":"A study of Steiner cephalometric norms for Chinese children","authors":"Yih-Wen Chen, K. Inami, N. Matsumoto","doi":"10.18905/JODU.49.2_237","DOIUrl":"https://doi.org/10.18905/JODU.49.2_237","url":null,"abstract":"Ever since Broadbent introduced the basic techniques for radiographic cephalometry, this measurement method has been used in numerous studies of craniofacial growth, development, function, and ethnicity-related characteristics. Currently, many measurement methods have been standardized for Caucasians and Japanese, and have been applied in the clinical field of orthodontics. These methods have made it possible to assess the morphological features of the maxillofacial area, patterns of growth and development, and relationships between the teeth/dental arches and the jaws and face. In particular, the Steiner analysis focuses on the relationships between the ANB angle and the U1-to-NA angle/L1to-NB angle, and on the positions of the incisal edges of the maxillary and mandibular central incisors relative to the NA and NB lines. Steiner analysis is a method that determines the occlusal relationships of the anterior teeth according to the individual’s ANB angle to formulate goals for therapy. However, it is necessary to also consider age, sex, ethnicity, individual differences, and growth. To date, research on the relationships between the maxillofacial complex and dentition in Chinese has been inadequate ; in particular, there has been no systematic research on standard values in the healthy popuA study of Steiner cephalometric norms for Chinese children","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"237-244"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18905/JODU.49.2_237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67888885","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}

{"title":"Plaque removal efficacy of the interdental toothbrush","authors":"Koichiro Jin, K. Kawasaki, Takashi Doi, Masako Uene, M. Kambara","doi":"10.18905/JODU.49.2_179","DOIUrl":"https://doi.org/10.18905/JODU.49.2_179","url":null,"abstract":"DaiTy oral care is an established part of a healthy 1itestyte in Japan. Self-care by tooth brushing is the primary way of cleaning the oral cavity. However, a large amount of dental plaque remains in the proximal areas of the teeth even after brushing. As a result, the use of dental floss or an interdental brush for cleaning areas between the teeth is commonly used to complement oral cteaning. We compa red the red plaque removal efficacy of plaque disclosed with red disclosing solution by an interdenta} brush with that by a manuat toothbrush. Oral examination and quantitative light-induced fluorescence (QLF) were pertormed and two parameters vvere analyzed from the digital images : the mean AR (%) and the area (mm2} of the ptaque. We examined 1O","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"179-184"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67888115","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}

{"title":"Effects of different surgical procedures on the pharyngeal space with mandibular prognathism","authors":"Yutaka Yamada, N. Matsumoto","doi":"10.18905/JODU.49.2_143","DOIUrl":"https://doi.org/10.18905/JODU.49.2_143","url":null,"abstract":"Mandibular prognathism is among the most common types of jaw deformity and the degree of deformity and the severity level varies greatly from case to case. Surgical procedures to correct mandibular prognathism are generally determined based on the degree of mandibular protrusion and maxillary retrusion. Treatment options include the one jaw approach by mandibular sagittal split ramus osteotomy alone or the two jaw approach by a combination of mandibular setback and maxillary advancement with Le Fort I osteotomy. Preand postoperative changes in facial esthetics and occlusion, and postoperative skeletal stability have been investigated extensively. 2 Influences of these procedures on the upper respiratory tract have also been widely studied. However, few reports have addressed long-term changes in the pharyngeal airway space of patients treated by these procedures. The purpose of this study was to investigate how different surgical procedures affect pharyngeal airway changes through a comparative analysis of skeletal mandibular prognathism patients who were treated by the one jaw and two jaw approaches. Preand postoperative measurements of the dentofacial skeleton, pharyngeal airway space and areas that affect pharyngeal airway space were used as the parameters for measurements and comparison. Effects of different surgical procedures on the pharyngeal space with mandibular prognathism","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"143-148"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67887635","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}

{"title":"Chondrocyte differentiation of human buccal fat pad-derived dedifferentiated fat cells and adipose stem cells using an atelocollagen sponge","authors":"A. Nishio, H. Kubo, N. Kishimoto, Y. Hashimoto, K. Kakudo","doi":"10.18905/JODU.49.2_185","DOIUrl":"https://doi.org/10.18905/JODU.49.2_185","url":null,"abstract":"Cartilage, a widely dispersed connective tissue found in the maxillofacial region (the nose, ears and various joints) can be affected by various conditions, including congenital morphological anomalies such as cleft lip and palate, joint trauma, or post-surgery trauma after tumor removal. Damage to cartilage tissue has a deleterious effect on facial morphology and can make it difficult for the patient to resume daily activities, which may significantly decrease the patient’s quality of life. In such situations, treatment generally involves transplantation of autologous cartilage or implantation of polymer biomaterials such as silicon or hyaluronic acid. However, these materials have certain disadvantages such as a lack of durability, increased risk of infection, and the requirement of invasive approaches to remove tissue from donor sites. Tissue engineering strategies are expected to replace injured articular cartilage tissues with tissue grown in vitro. Recently, mature adipocytes, which are the most abundant cell type in adipose tissues, have been considered good candidates for tissue engineering because of their multilineage potential. 3 These types of cells, which are termed adipose stem cells (ASCs), have been investigated for their capacity to differentiate into three linages : mesoderm, ectoderm, and endoderm. In general, acquisiChondrocyte differentiation of human buccal fat pad-derived dedifferentiated fat cells and adipose stem cells using an atelocollagen sponge","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"20 1","pages":"185-196"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67888174","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}

{"title":"Measurement of interspaces after filling bone defects with different sizes of β-tricalcium phosphate granules : Comparison between experimental animals and defect models","authors":"Yoshiyuki Ohnishi, I. Toda, F. Suwa","doi":"10.18905/JODU.49.2_149","DOIUrl":"https://doi.org/10.18905/JODU.49.2_149","url":null,"abstract":"Following tooth loss, alveolar bone is resorbed over time. In cases with high levels of absorbed alveolar bone, bone augmentation by use of various artificial materials is often performed in combination with oral implant treatment. Beta-tricalcium phosphate (βTCP) is an artificial bone supply material used for bone augmentation. It has a high level of osteoconductivity, as it is absorbed relatively quickly and replaced with autologous bone, and has recently been applied in the fields of orthopedic medicine and dentistry. When β-TCP granules are used for filling bone defects, microvascular formation advances in the granule interspaces, which is followed by bone formation to encircle the granules. 23 Accordingly, the granule interspaces are considered important for microvascular formation and subsequent new bone formation. We used granules of different sizes in animal experiments to measure granule interspaces and investigated whether adequate space required for microvascular formation could be obtained when the granules were added in vivo. In addition, we measured the interspaces in a bone defect model and compared the results with those obtained in the animal experiments. We also analyzed the usefulness of a bone defect model as a substitute for animal experimentation from the standpoint of animal welfare.","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"149-156"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67887731","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}

{"title":"Mechanical properties of artificial porcelain denture teeth","authors":"Noritsugu Kitao, K. Kakimoto, T. Masuda, Takayuki Kusunoki, E. Utoh, Koji Matuo, Tatsuro Miyake, Y. Ono, Kazuya Takahashi, Y. Komasa","doi":"10.18905/JODU.49.2_245","DOIUrl":"https://doi.org/10.18905/JODU.49.2_245","url":null,"abstract":"Noritsugu Kitao\", Kazutoshi Kakimoto2, Takayuki Masuda\", Takayukj Kusunoki2, Eigo Utoh2, Koji Matuo2, Tatsuro Miyake3, Yeshiaki Ono2, Kazuya Takahashi2 and Yutaka Komasa' 'Graduate School of Dentisny (Geriatric Dentistt]O, of Geriatric Dentistry Osaka DentaI University, 81 i(lizuhahanazono-cho, Hirakata-shi, Osaka 573-f 12 1, Japan, and SDepartment of Osal Heatth Science, facutty of Nutsing and Heatth Care, Baika Wbmen's Univetsity1 2-19-5 Shukunosho, loaraki-shi, Osaka 567-8578, Japan","PeriodicalId":76018,"journal":{"name":"Journal of Osaka Dental University","volume":"49 1","pages":"245-251"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.18905/JODU.49.2_245","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67889061","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}