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Bulletin of Tokyo Dental College

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https://www.readbyqxmd.com/read/28724864/anatomic-and-histological-study-of-lingual-nerve-and-its-clinical-implications
#1
Yoshiaki Shimoo, Masahito Yamamoto, Masashi Suzuki, Masato Yamauchi, Akihiro Kaketa, Masaaki Kasahara, Masamitsu Serikawa, Kei Kitamura, Satoru Matsunaga, Shinichi Abe
Although the risk of injuring the lingual nerve in the mandibular molar area during dental treatment is high, it can be repaired by nerve grafting. However, from the perspective of clinical dentistry, the pathway and histomorphometric characteristics of this nerve remain to be documented in detail. The purpose of the present study was to morphologically elucidate the pathway of the lingual nerve to clarify its significance in a clinical setting. A histomorphometric analysis was also performed in consideration of nerve grafting...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724863/factors-associated-with-number-of-present-teeth-in-adults-in-japanese-urban-city
#2
Tsukasa Kurahashi, Miki Kitagawa, Takashi Matsukubo
The purpose of this study was to identify which factors were associated with number of present teeth (PT) in older adults as their clarification might contribute to maintaining the number of PT in this population. These factors were investigated by means of a questionnaire on oral health condition, general health behavior, and anamnesis of diabetes mellitus together with a dental examination. Data were obtained from a total of 7,741 Japanese subjects (2,623 males and 5,118 females), all of whom were aged 40, 50, or 60 years...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724862/clinical-and-radiographic-success-of-electrosurgical-pulpectomy-in-primary-teeth
#3
Rasoul Sahebalam, Alireza Sarraf, Hamid Jafarzadeh, Maryam Jouybari-Moghaddam, Samane Seyed-Musavi
A pulpectomy requires the swift extraction of the inflamed tissue. Moreover, the speed of treatment is especially important in the case of uncooperative children. Conventional pulpectomies, however, often require an extended treatment period, which can therefore cause problems with such patients. Electrosurgical methods have been applied to pulpotomies for a number of years. However, to the best of our knowledge, no studies to date have assessed its application to pulpectomies. The aim of this study was to compare clinical and radiographic success rates over a 6-month follow-up period between conventional and electrosurgical pulpectomies...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724861/carcinoma-of-maxillary-gingiva-with-non-specific-cervical-lymph-node-swelling
#4
Masashi Migita, Shiro Shigematsu, Hitoshi Ohata, Takahiko Shibahara
Swelling of the cervical lymph nodes may indicate lymphadenitis, malignant lymphoma, or metastasis. Lymph nodes larger than 10 mm on computed tomography (CT) are strongly indicative of postoperative metastasis from carcinoma. Here, we report a case of large, inflamed lymph nodes mimicking metastasis. The patient was a 76-year-old woman who experienced discomfort in the left-side maxillary gingiva commencing in August 2011. By September, the area had become painful, causing her to visit the Tokyo Dental College Chiba Hospital, at which time a 75×50-mm swollen ulcer was observed in the maxillary gingiva on the left side...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724860/new-approach-to-3d-printing-of-facial-prostheses-using-combination-of-open-source-software-and-conventional-techniques-a-case-report
#5
Nafij B Jamayet, Yap J Abdullah, Zainul A Rajion, Adam Husein, Mohammad K Alam
The wax sculpting of a maxillofacial prosthesis is challenging, time-consuming, and requires great skill. Rapid prototyping (RP) systems allow these hurdles to be overcome by enabling the creation of a customized 3D model of the desired prosthesis. Geomagic and Mimics are the most suitable software programs with which to design such prostheses. However, due to the high cost of these applications and the special training required to operate them, they are not widely used. Additionally, ill-fitting margins and other discrepancies in the final finished products of RP systems are also inevitable...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724859/relationship-between-interdental-spacing-and-colonization-by-streptococcus-mutans-in-children
#6
Takuro Yonezu, Seikou Shintani
The purpose of this study was to investigate the relationship between interdental spacing in the upper incisors and other associated factors with colonization by Streptococcus mutans in children. A total of 47 children aged between 24 and 36 months with no decayed cavities were enrolled in the study. Models were obtained to evaluate interdental spacing in the upper anterior region. The relationships between S. mutans colonization and number of erupted teeth, interdental spacing, diet, and oral hygiene behavior were investigated...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724858/antibacterial-effect-of-azadirachta-indica-neem-or-curcuma-longa-turmeric-against-enterococcus-faecalis-compared-with-that-of-5-sodium-hypochlorite-or-2-chlorhexidine-in-vitro
#7
Dakshita Joy Sinha, Kanwar D S Nandha, Natasha Jaiswal, Agrima Vasudeva, Shashi Prabha Tyagi, Udai Pratap Singh
The purpose of this study was to compare the antibacterial properties of Azadirachta indica (neem) or Curcuma longa (turmeric) against Enterococcus faecalis with those of 5% sodium hypochlorite or 2% chlorhexidine as root canal irrigants in vitro. The activity of neem, chlorhexidine, sodium hypochlorite, or turmeric against E. faecalis was measured on agar plates using the agar diffusion method. The tube dilution method was used to determine the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the irrigants used...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381737/alveolar-growth-in-japanese-infants-a-comparison-between-now-and-40-years-ago
#8
Hiroki Imai, Tetsuhide Makiguchi, Aiko Arakawa, Ayako Tashiro, Takuro Yonezu, Seikou Shintani
To investigate differences in alveolar growth during the primary dentition period among different age groups, dental arch width, length, and height were measured in 93 dental arch plaster models obtained from 4-year-olds born between 1968 and 1974, 88 from 5-year-olds born between 1968 and 1974 (70s group), 61 from 4-year-olds born between 2007 and 2009, and 56 from 5-year-olds born between 2006 and 2008 (2000s group). A comparison was also performed to determine whether there was any difference in change between 4 and 5 years of age...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381736/relationship-between-time-from-full-pulpotomy-to-definitive-diagnosis-of-vertical-root-fracture-and-patient-age
#9
Koichi Yoshino, Koji Ito, Masahiko Kuroda, Naoki Sugihara
The goal of this study was to investigate length of time between full pulpotomy and a definitive diagnosis of vertical root fracture (VRF), as well as the age at which this was made. The participants comprised 63 dental patients (40 men and 23 women) with a mean age of 65.7±10.4 years in whom a definitive diagnosis of VRF had been made between July 2013 and June 2015, and who had also undergone a full pulpotomy. The data on all these cases were obtained from 22 dental clinics belonging to a clinical study group...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381735/status-of-clinical-training-at-tokyo-dental-college-and-subsequent-career-pathway-focusing-on-training-facilities-and-programs
#10
Ryuichi Hisanaga, Toshiyuki Takahashi, Toru Sato, Mamoru Yotsuya, Akimasa Shinya, Nahoko Miyake
The goal of the present study was to clarify the status of training in clinical dentistry at training facilities belonging to Tokyo Dental College by investigating trainee quota fill rates and analyzing the relationship between selection of training program and subsequent career pathway. The trainees were divided into 4 groups based on career pathway after training: those entering graduate school; those becoming residents; those remaining at the college or hospital to take specialized clinical courses or for other purposes; and those starting work outside the college...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381734/implant-supported-oral-rehabilitation-in-child-with-ectodermal-dysplasia-4-year-follow-up
#11
Thaisa Cezária Triches, Marcos Ximenes, João Gustavo Oliveira de Souza, Armando Rodrigues Lopes Pereira Neto, Antônio Carlos Cardoso, Michele Bolan
Ectodermal dysplasia (ED) is an anomaly determined by genetic factors that alter ectodermal structures such as skin, hair, nails, glands, and teeth. Children affected by this condition require extensive, comprehensive, and multidisciplinary treatment. An 8-year-old female patient visited the Dentistry Clinic of the Federal University of Santa Catarina with the chief complaint of multiple missing teeth. The mother reported that the patient had ED. Clinical and radiographic examination revealed the congenital absence of several primary and permanent teeth and tooth germs...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381733/tooth-auto-transplantation-an-alternative-treatment
#12
Jawaad Ahmed Asif, Tahir Yusuf Noorani, Mohammad Khursheed Alam
Auto-transplantation is the repositioning of an autogenously erupted, partially erupted, or unerupted tooth from one site to another in the same individual. The purpose of this case report is to describe the auto-transplantation of the mandibular third molars as an alternative means of replacing second molars requiring extraction. An orthopantomogram revealed horizontal impaction of teeth #37 and 47 and mesio-angular impaction of teeth #38 and 48. Cone beam computed tomography revealed that the roots of #37 and 47 were in close proximity to the inferior alveolar canal bilaterally...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381732/intentions-and-factors-regarding-selection-of-workplace-by-postgraduate-dental-trainees-after-clinical-training
#13
Yoshikazu Okawa, SoIchiro Hirata, Ikuo Nasu, Yukio Hirata
The purpose of the present study was to investigate the reasons governing selection of geographical location of workplace by postgraduate dental trainees. We believe that such data would aid in the development of measures aimed at reducing regional disparities in the number of dentists. A total of 10 dental colleges and faculties in Japan were invited to participate in the study. Anonymous, self-completed questionnaire surveys were given to 739 dentists at 13 clinical training facilities following training in 2012 and 2013; 713 responses were analyzed...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381731/efficiency-of-closed-mastication-of-gummy-evaluated-with-gnatho-hexagraph
#14
Chiharu Shima, Etsuko Motegi, Akiyo Horiuchi, Takenobu Ishii, Mayumi Nomura, Makoto Nakao, Kenji Sueishi
The aim of this study was to determine whether chewing with closed lips improved masticatory efficiency compared with open lips. A total of 21 adults comprising 10 men and 11 women with a mean age of 26.2±3.5 years and normal masticatory function were included in the study. The study participants were instructed to chew a fresh gummy under two conditions for 30 seconds each, one after the other: the first with closed lips, and the second with open lips. The average size of the fragmented gummies was calculated and graded from 1 to 4 according to a specific scale...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381730/swallowing-rehabilitation-affects-period-of-hospitalization-after-surgery-for-tongue-cancer
#15
Mai Ohkubo, Tetsuya Sugiyama, Mariko Ohira, Masanao Yamamoto, Tatsuya Iguchi, Takahiko Shibahara, Nobuo Takano, Ryo Ishida
Functional rehabilitation has been reported to improve swallowing. The effect of the presence or absence of such rehabilitation has yet to be compared in oral cancer patients, however. The purpose of this study was to investigate its effect on correlations between the period of hospitalization and the period of tube feeding (from the day of surgery to termination of tube feeding) and period of oral nutrition (from termination of tube feeding to discharge). Body weight was also measured on admission and discharge and the difference calculated...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28381729/relationship-between-general-health-lifestyle-oral-health-and-periodontal-disease-in-adults-a-large-cross-sectional-study-in-japan
#16
Miki Kitagawa, Tsukasa Kurahashi, Takashi Matsukubo
The aim of this study was to investigate how general health, oral conditions, and lifestyle were associated with periodontal disease in adults, as clarifying this relationship may be useful in preventing periodontal disease. Medical checkups were conducted on individuals aged 40, 50, or 60 years. Data were obtained for analysis on a total of 36,110 patients (men, 12,784; women, 22,896). A stepwise logistic regression model was used to calculate the odds ratio (OR) for patients who were ≥code 3 according to the Community Periodontal Index (CPI)...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28049978/analysis-of-needlestick-and-similar-injuries-over-10-years-from-april-2004-at-tokyo-dental-college-chiba-hospital
#17
Kazuki Morinaga, Keiko Hagita, Takashi Yakushiji, Hitoshi Ohata, Kenji Sueishi, Takashi Inoue
Here we investigated needlestick and similar injuries reported over a 10-year period between April 2004 and March 2014. The purpose of this study was to prevent recurrence and reduce the incidence of such injuries at Tokyo Dental College Chiba Hospital. The Division of Medical Risk Management at Chiba Hospital anonymized the data to protect personal information prior to analysis. A total of 213 injuries occurred over the 10-year period investigated, but the number of cases decreased yearly. Many cases involved dental undergraduate students and dentists, followed by trainee dentists, students at the school of dental hygiene, nurses, dental hygienists, and cleaners...
2016: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28049977/cbct-based-diagnosis-of-periapical-lesion-of-maxillary-first-premolar-mimicking-that-of-second-premolar
#18
Rie Fujii, Masataka Suehara, Sayo Sekiya, Norihito Miyayoshi, Tomohiro Asai, Kazuki Morinaga, Takashi Muramatsu, Masahiro Furusawa
Apical periodontitis is usually diagnosed based on clinical findings and dental X-rays. Recently, however, dental cone beam computed tomography (CBCT), which provides 3-D images of the maxillofacial region, has enabled dentists to examine patients undergoing endodontic therapy more effectively, improving diagnostic accuracy. Here, we describe a positive treatment outcome achieved using CBCT to diagnose apical periodontitis of the maxillary premolars, which had proven difficult to diagnose based on clinical findings and dental radiography alone...
2016: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28049976/posterior-open-bite-due-to-failure-of-maxillary-molar-eruption
#19
Toshihiko Yasumura, Kenji Sueishi
Posterior open bite can cause problems with occlusion. It arises from systemic or local factors such as physical or functional interference, ankylosis, and failure of eruption. Primary failure of eruption (PFE) is a rare condition that is difficult to differentiate from ankylosis and requires complex treatment strategies. Here we report a 12-year-old girl who was referred to our hospital by her dentist for re-evaluation of eruption failure of the left maxillary secondary premolar and first and second molars with congenitally missing maxillary lateral teeth...
2016: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28049975/bilateral-scissor-bite-treated-by-rapid-mandibular-expansion-following-corticotomy
#20
Teruo Sakamoto, Kotaro Hayakawa, Takenobu Ishii, Kunihiko Nojima, Kenji Sueishi
Scissor bite is defined as buccal displacement of the maxillary posterior teeth, with or without contact between the lingual surface of the maxillary lingual cusp and the buccal surface of the buccal cusp of its mandibular antagonist. Here we report treatment of bilateral scissor bite in the posterior region using rapid expansion following corticot-omy. The patient was a boy aged 17 years and 11 months in whom skeletal maxillary prognathism with bilateral scissor bite was diagnosed. The distance between the tips of canines and the mesial buccal cusps of the first molars was increased by use of a bonded rapid expansion appliance following corticotomy...
2016: Bulletin of Tokyo Dental College
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