著者

Shun-ichiro HIRANO Tetsuya FUJIMOTO Hiroshi INOUE Kenji UCHIHASHI Yasuo NISHIKAWA

出版者

Osaka Odontological Society

雑誌

Journal of Osaka Dental University (ISSN:04752058)

巻号頁・発行日

vol.51, no.2, pp.151-156, 2017-10-25 (Released:2018-01-25)

参考文献数

13

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The seating location in the classroom is thought to have a close relationship to the aca­ demic performance of each student. However, as teachers taking part in higher educa­ tion, we know that "common sense" must give way to many exceptional cases. To verify the truth of this widely held belief, we recorded the students' seating locations at a den­ tal hygiene college for many years, and correlated this information with their academic performance. As the rooms in which they were taught were identical, and the seating ar­ rangements were consistent throughout the years, it allowed us to analyze the data in a single environment. Many studies have reported that although students with poor grades sit in "low interaction" seats, students with good grades do not select "high interaction"seats, but rather prefer to occupy "moderate interaction" seats. Average or middle stu­ dents tended to have no favored location. We were not able to correlate each student's academic performance with her preferred seating location, especially in the case of high performing students. However, the pre­ ferred seating location for students with poor grades tended to follow commonly ac­ cepted norms which have been described in many reports. Our findings suggest that stu­ dents who are at risk of failing could be determined by where they sit in the classroom. This helps to identify the potentially unsuccessful candidates, and permits remedial ac­ tion at an early stage. (J Osaka Dent Univ 2017; 51: 151­-156)

著者

Hiroshi Inoue Yuichi Ohnishi Yuki Minamino Yoshihide Ugaki Suguru Dateoka Hirohito Kubo Masahiro Inoue Mitsuchika Sugitatsu Masahiro Nakajima Kenji Kakudo

出版者

Osaka Odontological Society

雑誌

Journal of Osaka Dental University (ISSN:04752058)

巻号頁・発行日

vol.44, no.2, pp.111-117, 2010 (Released:2016-12-29)

参考文献数

32

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Cancer testis antigens (CTA) are a group of normal testicular proteins. Although their expression appears in cancer cells, it does not appear in somatic cells with the exception of male germ cells. Consequently CTAs are immunogenic in cancer patients, and considered promising target molecules for cancer vaccines. In CTAs, brother of the regulator of imprinted sites (BORIS), which is also known as CCCTC-binding factor-like (CTCFL), is an epigenetic-acting oncogene that supresses the tumor inhibitor functions of CTCF. For this reason, BORIS is thought to be an ideal molecular target for drugs against various cancers. In order to detect CTAs in oral cancer, we used the methylation pattern to select six genes containing BORIS, ACTL7B, PPP3R2, SYCP1, DAZL, and TAF7L. We then analyzed the expression of these genes in oral squamous cell carcinoma cell lines and various mice organs. Expression of only BORIS in these genes was detectable in SAS, HSC-3 and HSC-4. Boris expression in adult mice was restricted to the testes. These findings imply that BORIS might be the target of immunotherapy for oral cancer.

著者

Masaya MIYAZONO Katsunori TORII Mayu YAMAMOTO Junko TANAKA Masahiro TANAKA

出版者

Osaka Odontological Society

雑誌

Journal of Osaka Dental University (ISSN:04752058)

巻号頁・発行日

vol.53, no.2, pp.179-186, 2019-10-25 (Released:2020-01-25)

参考文献数

22

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We attempted to clarify how the impressions imparted on observers are affected by smiles with exposed teeth. Sixty young adults participated in the study, 23 men and 37 women, who had a mean age of 23±2 years. Impressions of composite (average) male and female faces were rated to eliminate individual bias. Ten facial photos were processed for each of 10 adult males with a mean age of 25±2 years and 10 adult females with a mean age of 26±1 years. Three stimulus images were used for each gender: a neutral face (teeth hidden), a smiling face (teeth hidden), and a grinning face (teeth exposed). The average male faces were rated by 30 subjects and the average female faces by the other 30. The semantic differential method was used to rate the impressions. Group ratings were then subjected to factor analysis. The two common factors having the greatest explanatory power were: “Sociable" and “Active" for the male stimulus images and “Friendly" and “Elegant" for the females. Significant differences between stimuli were observed for scores on both the first and second factors. In all cases, the grin was rated highest, followed by the smile and neutral face. We found that when smiling with the teeth exposed, male faces give a strong impression of sociability and activity, while females give a strong impression of friendliness and elegance. (J Osaka Dent Univ 2019; 53: 179‐186)

著者

Yamamoto Kazuyo Takeuchi Osamu Zennyuu Kanji Fukui Masaki Suzuki Koichiro Hatsuoka Yoshinori Shiraishi Mitsuru

出版者

大阪歯科学会

雑誌

Journal of Osaka Dental University (ISSN:04752058)

巻号頁・発行日

vol.40, no.1, pp.37-42, 2006

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We did an in vitro study on the bonding durability both to enamel and dentin of three fluoride-releasing enamel/dentin adhesive systems: experimental ABF and Imperva Fluorobond which are 2-step (self-etching primer+adhesive) systems, and Reactmer which is a 1-step (self-etching-priming-adhesive) system. The tensile bond strength was determined after 1 day and 1 year in 37℃ water. ABF showed high bond strength to enamel and dentin after 1 day. Although the bond strength to enamel was significantly degraded after 1 year, fractures were almost all cohesive failures in the bonding resin. Therefore, TBS values seemed to reflect the tensile strength of the bonding resin; the actual bond strength at the interface was probably greater than the values obtained from the tensile bond strength tests. Although Fluorobond had dentin bonding durability similar to ABF, its bond strength to enamel was inferior. Adhesive failures were mainly observed with enamel, indicating that the bonding durability to enamel was insufficient. In Reactmer, bond strengths both to enamel and dentin were significantly reduced after 1 year in water. The fractured surfaces were cohesive failures in the bonding resin for all specimens. These findings suggest that the bonding of ABF and Fluorobond to enamel and dentin was generally durable. The bond strength of Reactmer was less durable than the other two systems because of the fragile bonding resin.