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      • KCI등재

        Factors Affecting Blood Loss During Thoracoscopic Esophagectomy for Esophageal Carcinoma

        Masayuki Urabe,Yu Ohkura,Shusuke Haruta,Masaki Ueno,Harushi Udagawa 대한흉부외과학회 2021 Journal of Chest Surgery (J Chest Surg) Vol.54 No.6

        Background: Major intraoperative hemorrhage reportedly predicts unfavorable survival outcomes following surgical resection for esophageal carcinoma (EC). However, the fac- tors predicting the amount of blood lost during thoracoscopic esophagectomy have yet to be sufficiently studied. We sought to identify risk factors for excessive blood loss during video-assisted thoracoscopic surgery (VATS) for EC. Methods: Using simple and multiple linear regression models, we performed retro- spective analyses of the associations between clinicopathological/surgical factors and estimated hemorrhagic volume in 168 consecutive patients who underwent VATS-type esophagectomy for EC. Results: The median blood loss amount was 225 mL (interquartile range, 126–380 mL). Abdominal laparotomy (p<0.001), thoracic duct resection (p=0.014), and division of the azygos arch (p<0.001) were significantly related to high volumes of blood loss. Body mass index and operative duration, as continuous variables, were also correlated positively with blood loss volume in simple linear regression. The multiple linear regression analysis identified prolonged operative duration (p<0.001), open laparotomy approach (p=0.003), azygos arch division (p=0.005), and high body mass index (p=0.014) as independent pre- dictors of higher hemorrhage amounts during VATS esophagectomy. Conclusion: As well as body mass index, operation-related factors such as operative du- ration, open laparotomy, and division of the azygos arch were independently predictive of estimated blood loss during VATS esophagectomy for EC. Laparoscopic abdominal pro- cedures and azygos arch preservation might be minimally invasive options that would potentially reduce intraoperative hemorrhage, although oncological radicality remains an important consideration.

      • KCI등재후보

        Relationship between Social Anxiety Disorder and Halitosis

        Takashi Zaitsu,Masayuki Ueno,Kayoko Shinada,Clive Wright,Yoko Kawaguchi 대한예방치과학회 2011 International Journal of Clinical Preventive Denti Vol.7 No.1

        Objective: The objective of this study was to investigate the nature of social anxiety disorder in halitosis patients. Methods: The 472 halitosis patients were divided into genuine halitosis and pseudohalitosis groups based upon an organoleptic test. The Japanese version of the Liebowitz Social Anxiety Scale (LSAS), was used to evaluate the clinical impact of social anxiety disorder in the patients. Results: More than half of subjects had a score of 30 or more on the LSAS, indicating a high risk of social anxiety disorder; and more than 20% of subjects had a score of 60 or more on the LSAS, indicating a high risk of eneralized social anxiety disorder. Pseudohalitosis patients had significantly higher “performance scores” compared to genuine halitosis patients. However, there was no significant difference in “social interaction scores” between those with genuine halitosis and pseudohalitosis. Conclusion: Halitosis patients have a high risk of social anxiety disorder, especially pseudohalitosis patients. Our results suggest that the LSAS could be a valuable screening tool for assessing social anxiety in halitosis patients.

      • KCI등재

        Masticatory Performance Measured with a Chewing Gum Containing Spherical Resinous Microparticles

        Toshiya Kanazawa,Takashi Zaitsu,Masayuki Ueno,Yoko Kawaguchi 대한예방치과학회 2018 International Journal of Clinical Preventive Denti Vol.14 No.4

        Objective: This study aimed to investigate the factors associated with masticatory performance, as measured with a chewing gum containing spherical resinous microparticles, and to evaluate the method by examining the relationship with self-reported masticatory status. Methods: The participants in this study comprised 903 industrial workers (mean age, 42.2±11.6 years). A questionnaire was administered to assess self-reported masticatory status. The masticatory performance score was calculated by counting the number of particles in the chewing gum. Clinical oral examinations were administered. Multiple linear regression analysis was conducted on the masticatory performance scores to examine the related factors. Analysis of covariance was conducted to investigate the association between the masticatory performance score and the self-reported masticatory status. Results: Significant predictors of the masticatory performance score were sex (p<0.001), age (p<0.001), decayed teeth (p=0.009), total-functional tooth units (p<0.001), periodontitis (p=0.003), and malocclusion (p=0.011). The relationship between the masticatory performance score and the self-reported masticatory status was attenuated after controlling for confounding factors. Conclusion: The masticatory performance increased with age and decreased as the oral health status worsened. Using this chewing gum method partly, but not comprehensively, reflects masticatory performance. Therefore, various masticatory performance- related indexes should be employed to measure masticatory performance accurately.

      • KCI등재

        Corrigendum: Masticatory Performance Measured with a Chewing Gum Containing Spherical Resinous Microparticles

        Toshiya Kanazawa,Takashi Zaitsu,Masayuki Ueno,Yoko Kawaguchi 대한예방치과학회 2019 International Journal of Clinical Preventive Denti Vol.15 No.1

        Objective: This study aimed to investigate the factors associated with masticatory performance, as measured with a chewing gum containing spherical resinous microparticles, and to evaluate the method by examining the relationship with self-reported masticatory status. Methods: The participants in this study comprised 903 industrial workers (mean age, 42.2±11.6 years). A questionnaire was administered to assess self-reported masticatory status. The masticatory performance score was calculated by counting the number of particles in the chewing gum. Clinical oral examinations were administered. Multiple linear regression analysis was conducted on the masticatory performance scores to examine the related factors. Analysis of covariance was conducted to investigate the association between the masticatory performance score and the self-reported masticatory status. Results: Significant predictors of the masticatory performance score were sex (p<0.001), age (p<0.001), decayed teeth (p=0.009), total-functional tooth units (p<0.001), periodontitis (p=0.003), and malocclusion (p=0.011). The relationship between the masticatory performance score and the self-reported masticatory status was attenuated after controlling for confounding factors. Conclusion: The masticatory performance increased with age and decreased as the oral health status worsened. Using this chewing gum method partly, but not comprehensively, reflects masticatory performance. Therefore, various masticatory performance- related indexes should be employed to measure masticatory performance accurately

      • KCI등재

        Caries Arresting Effect of Silver Diamine Fluoride in Vietnamese Preschool Children

        Yen Hoang Thi Nguyen,Masayuki Ueno,Takashi Zaitsu,Toai Nguyen,Yoko Kawaguchi 대한예방치과학회 2017 International Journal of Clinical Preventive Denti Vol.13 No.3

        Objective: A 1-year longitudinal study compared the effectiveness of annual and biannual silver diamine fluoride (SDF) applications on caries arrest among preschool children. Methods: A total of 295 children aged 2 to 3 years from 6 public preschools in Vietnam were selected and divided into 3 groups: Group 1 (G1) received annual SDF (n=90), Group 2 (G2) received biannual SDF (n=99), and Group 3 (G3) did not receive SDF (n=106). Clinical oral examination was performed at baseline, 6 months and 1 year. Results: Mean ds, the main component of dmfs, were 14.92 in G1, 15.91 in G2, and 18.17 in G3 at baseline, and no significant differences were found between the 3 groups. From baseline to 6 months and to 1 year, mean ds increased significantly in all children: 1.88 and 3.75 in G1, 2.22 and 3.47 in G2, and 5.20 and 8.91 in G3. Mean ds was significantly higher in G3 than G1 and G2 at 6 months and 1 year. At baseline, about 60% of active carious surfaces were treated with SDF in both G1 and G2. The proportions of arrested caries surfaces at 6 months and 1 year were 61.8% and 47.6% in G1, and 57.7% and 64.0% in G2. Significantly higher proportions of arrested caries surfaces were observed in G2 than G1 at 1 year. Conclusion: The study demonstrated a caries arresting effect of SDF in preschool children and its effect was greater after biannual application than annual application.

      • KCI등재후보

        Oral Malodor and Related Factors among Vietnamese Dental Patients

        Thuy AV Pham,Takashi Zaitsu,Masayuki Ueno,Kayoko Shinada,Khanh D Ngo,Phuong H Lam,FA Clive Wright,Yoko Kawaguchi 대한예방치과학회 2010 International Journal of Clinical Preventive Denti Vol.6 No.2

        Objectives: The aims of this study were to examine the oral malodor status, and relationship of oral malodor to socio-demographic factors, dental health behavioral characteristics and dental conditions in Vietnamese dental patients. Materials and Methods: The subjects were 243 patients aged 30 to 60 years who visited the National Hospital of Odonto-Stomatology in Hochiminh City. Oral malodor was measured by the organoleptic method and using Oral ChromaTM. The socio-demographic and dental health behavioral characteristics were investigated by a questionnaire. Oral examination including dental and periodontal conditions, oral hygiene status, and saliva were examined. Results: Prevalence of oral malodor diagnosed by the organoleptic method was 69.2%. The risk factors related to oral malodor were level of education (OR=3.18), dental visit behavior (OR=4.97), deep pockets (OR=5.35), gingival bleeding (OR=3.37), thickness of tongue coating (OR=4.44), salivary flow rate (OR=4.80) and pH of saliva (OR=3.93). Conclusion: There was a high prevalence of oral malodor, which was associated with oral and behavioral factors in Vietnamese dental patients. The effective treatment of periodontal disease, improvement of oral hygiene condition and appropriate oral health education are all important to ameliorate oral malodor and improve oral health.

      • KCI등재

        Oral Malodor and Its Related Factors in Edentate Elderly with and without Dentures

        Patcharaphol Samnieng,Jadesada Palasuk,Takashi Zaitsu,Masayuki Ueno,Kawaguchi Yoko 대한예방치과학회 2015 International Journal of Clinical Preventive Denti Vol.11 No.4

        Objective: The objectives of this study was to assess oral malodor in edentate elderly who wear and do not wear dentures, and to analyze its association with socio-economic status, oral health, oral and denture hygiene. Methods: One hundred eighty-four edentate elderly who lived in Phitsanulok, Thailand (39 male, 145 female, mean age= 71.28±6.06 years), were participated in this study. Oral malodor was assessed using the organoleptic test (OT) and Oral ChromaTM. Oral examination and salivary flow rate were conducted. Participants were given a self-administered, structured questionnaire to collect sociodemographic status, educational level, economic status, medical history, oral and denture hygiene behaviors. Results: The prevalence of oral malodor by OT, H2S, CH3SH, (CH3)2S criteria were 69.6%, 58.2%, 17.4%, and 74.8%, respectively. Subjects who wear dentures were more likely to have a higher prevalence and higher concentration of H2S and (CH3)2S than those who do not wear dentures. Logistic regression analysis showed that the tongue coating was related with OT and H2S in both group of subjects. Quality of dentures was associated with OT and (CH3)2S (p<0.05). Dentures worn overnight was associated with OT and H2S (p<0.05). Systemic disease and intake of medicine were associated with (CH3)2S (p<0.05). Conclusion: Wearing a denture was a significant source of oral malodor especially poor quality dentures and the overnight use. Professional care to ensure quality of dentures and self-care for oral and denture hygiene education is important in this age group for preventing oral malodor.

      • KCI등재

        Early Childhood Caries and Related Risk Factors among Myanmar Preschool Childre

        Kaung Myat Thwin,Takashi Zaitsu,Masayuki Ueno,Yoko Kawaguchi 대한예방치과학회 2016 International Journal of Clinical Preventive Denti Vol.12 No.4

        Objective: The purposes of this study were to investigate the prevalence of early childhood caries (ECC) in Myanmar preschool children and to assess the relationship between ECC and its potential risk factors. Methods: A cross-sectional epidemiological study was undertaken among 603 preschool children (3-4 years) from six kindergartens of Yangon city in 2015. Clinical oral examinations of children and questionnaire surveys to guardians were conducted. Results: Overall caries prevalence was 82.9% with mean dmft of 6.42±4.90. Caries prevalence and mean dmft by age were 78.9% and 5.69±4.66 in 3 year-olds, and 87.0% and 7.34±5.03 in 4 year-olds. Longer duration of breast or bottle feeding was significantly associated with higher dental caries experience. Children who took sweet foods or drinks had significantly higher dmft than those who took no sweet foods or drinks. Dental caries prevalence was significantly lower in children who started tooth brushing early. Tooth brushing once a day showed a significantly higher risk of dental caries than tooth brushing twice or more a day. Children who always rinsed after meals were significantly less likely to have dental caries than those who did not rinse at all. Conclusion: ECC is currently a serious oral health problem in Myanmar. Expansion of awareness of dental caries in both parents and oral health professionals would be likely to improve the condition among Myanmar preschool children.

      • KCI등재

        The Relationship of Salivary Viscosity with Halitosis

        Sachiko Komori,Takashi Zaitsu,Sachiko Takehara,Masayuki Ueno,Yoko Kawaguchi 대한예방치과학회 2016 International Journal of Clinical Preventive Denti Vol.12 No.1

        Objective: The purpose of this research was to examine the relationship of salivary viscosity with halitosis. Methods: Subjects were 224 patients who visited a halitosis clinic. Instrumental measurements (Gas chromatography and Sulfide monitor) and the organoleptic assessment were used for the detection of halitosis. An oral health examination assessed the number of teeth present and decayed teeth, periodontal pocket depth and gingival bleeding, plaque index and tongue coating. Un-stimulated whole saliva was collected for 5 minutes. Salivary viscosity was measured using a cone-and-plate digital viscometer. The independent t-test and chi-square test were conducted to compare the means and distributional differences by malodor status. Logistic regression analysis was performed with malodor status as the dependent variable. Gender, age and oral health status were used as independent variables. Results: Chi-square tests demonstrated significant associations between salivary viscosity and H2S≥1.5, CH3SH≥0.5, (CH3)2S≥0.4, BreathtronⓇ≥251, and organoleptic score≥2.0 (p<0.05). Salivary viscosity (p<0.05) and the tongue coating (p<0.05) were significant variables in all malodor measurements (concentrations of H2S, CH3SH, (CH3)2S, total volatile sulfur compounds [VSCs], and the organoleptic score). Compared to subjects with low salivary viscosity, those with high salivary viscosity were significantly more likely to have malodor (odds ratio: ranging from 2.32 to 7.51). Conclusion: This study indicated that salivary viscosity as well as tongue coating were significant risk factors for halitosis measured by concentrations of H2S, CH3SH, (CH3)2S, total VSCs, and the organoleptic score.

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