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Volume 59 (2009)
- Issue 5 Pages 544-
- Issue 3 Pages 159-
- Issue 2 Pages 86-
- Issue 1 Pages 2-
Volume 59, Issue 2
Displaying 1-8 of 8 articles from this issue
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ORIGINAL ARTICLE
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Mieko MASUDA, Hirohisa ARAKAWAArticle type: Article
2009 Volume 59 Issue 2 Pages 86-92
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSDental calculus is one of the risk factors involved in the development of periodontal disease, and plaque formation and salivary factors are closely linked to calculus accumulation. We hypothesized that susceptibility to calculus could be predicted by employing the saliva test used for caries risk assessment. We therefore analyzed the relationship between calculus accumulation and the salivary flow rate, buffer capacity, pH, and viscosity. We also investigated the link between oral hygiene behavior and calculus accumulation. The state of calculus accumulation eight weeks after calculus removal and polishing was taken as the dependent variable, and subjects were divided into two groups-high and low-according to the extent of calculus accumulation. Each of the categories in the saliva test was taken as an independent variable, and analysis was performed after subjects had been classified into one of the two groups for each category according to whether the corresponding value was above or below the mean. It was found that low- and mid-level salivary viscosity was associated with a higher level of dental calculus based on the results of the saliva test used for determining caries risk. Subjects who used dental floss showed a significantly lower rate of increase in calculus accumulation.View full abstractDownload PDF (1049K) -
Masao ISHIKAWA, Yoji YAMAZAKI, Toyoko MORITA, Yoko OGAWA, Seiji MORISH ...Article type: Article
2009 Volume 59 Issue 2 Pages 93-100
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSIt has been suggested that the total bacterial count in the oral cavity may affect the degree of oral cleanliness. However, there are few methods to rapidly and conveniently measure the total oral bacterial count. The present study proposes a simple and convenient oral cleanliness test, which clarified the relevance of the total bacterial count in the mouth rinse solution (MRS), using the ammonia concentration and/or turbidity as an indicator. The subjects consisted of 287 employees (40.2±9.6 years old) who underwent periodic medical and dental examinations. The MRS was collected after rinsing with 3ml of distilled water for 10sec, and then used as the sample solution. The total bacterial count in the MRS was measured by the real-time PCR method, the ammonia concentration was measured using ammonia test paper (Ami-check^<TM> and Pocket-chem BA PA-4130), and the turbidity was measured by absorbance at 660nm (OD_<660>) employing a portable photo-electric photometer (ANA-18A^+). The concentration of ammonia and turbidity (OD_<660>) of the MRS showed a relatively strong correlation with the total bacterial count (r=0.774, 0.750, respectively, p<0.01). These results suggest that the concentration of ammonia and turbidity (OD_<660>) of the MRS are useful indicators of oral cleanliness. Additionally, these values and the total bacterial count of the MRS also increased with age. Furthermore, subjects with a high CPI 3-4 code (periodontal pocket depth of 4mm or more) had a significantly higher concentration of ammonia and turbidity (OD_<660>) than those with CPI 0-2. Based on these results, it is suggested that the concentration of ammonia and turbidity (OD_<660>) of the MRS are useful indicators of oral cleanliness and the periodontal disease risk.View full abstractDownload PDF (1140K) -
Akira ISHIKAWA, Ritsuko ONOMA, Mie MASUDA, Toyoko MORITA, Yoji YAMAZAK ...Article type: Article
2009 Volume 59 Issue 2 Pages 101-110
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSIt is important to clean interdental regions to prevent periodontal disease, and so the expanding use of an interdental brush, which is one of the tools to clean these regions, is also important. We performed a survey to explore a strategy to expand interdental brush use. One-hundred and four persons who joined a maternal dental class participated in this study. Although awareness of interdental brushes was high, fewer than half had used them, and habitual users were few. On the other hand, three quarters had interdental regions into which a brush could be inserted. Many subjects began to use interdental brushes based on the recommendations of other persons. A lack of knowledge and experience according to inexperience was common reasons for not using them. It was difficult for them to choose an appropriate size of interdental brush visually. Through actual experience, the rate of choosing an appropriate size rose, but it was still insufficient. After instruction on interdental brush use, persons with many sites of sufficient insertion could use them easily and intended to do so in the future. The number of interdental brush users increased significantly at 2 months after the one-time instruction. The higer the number of brush insertion sites, the more subjects used the brushes after 2 months. Eighteen percent of respondents had bought interdental brushes after 2 months. To expand the use of interdental brushes for the prevention of periodontal disease, it is suggested that there is a strong need to educate people on the usage of brushes at every opportunity through public health services and dental clinics. It is thought that instruction by professionals would be more effective.View full abstractDownload PDF (1524K) -
Yuki NOGUCHI, Jun AIDA, Naoko TANDA, Emi ITO, Hiroyasu KANETAKA, Takey ...Article type: Article
2009 Volume 59 Issue 2 Pages 111-117
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSA community service program was introduced for the frail elderly to prevent conditions that require long-term care in 2006 in Japan. The program consists of screening community-dwelling, independently living elderly and promoting "strengthening of the bone, muscle, and joint functions", "nutritional support", and "extensive oral functional improvement" in the frail elderly. In the screening, three simple questions regarding dry mouth, masticatory problems, and swallowing difficulties/choking, observation of the oral hygienic condition, and the RSST (repetitive saliva swallowing test) were used. We examined oral conditions of the elderly paying regular visits to receive nursing care services, and compared them based on the screening items. As the results of analyzing 88 elderly, 78.4% of the subjects had dental treatment needs. Only one question regarding "having swallowing difficulties/choking during drinking water or soup" was significantly correlated with the dental treatment needs (odds ratio, 9.9 [95% CI 1.2, 82.9]); only one third of the elderly requiring dental treatment can be detected with the question. Our study revealed that the current screening criteria are inappropriate in terms of detecting those with dental treatment needs.View full abstractDownload PDF (867K) -
Hisako SASAHARA, Makoto KAWAMURAArticle type: Article
2009 Volume 59 Issue 2 Pages 118-124
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSIt has been suggested in many reports that the daily habits of children influence their dental health condition. There is little information, however, on the influence of parents' attitude toward child-raising on the dental health condition of their children, even though this attitude might influence their daily habits. The purpose of this study was to investigate the influence of parents' attitude toward child-raising on the dental health condition of their children. The subjects were 1,419 sets of parents and children who participated in both 18-month-old and 3-year-old health check-ups at the same health center. The parents were requested to fill out a questionnaire on their attitude toward child-raising at the 18-month-old check-up, and the dental condition of the children was recorded at the 3-year-old check-up. As a result, the children better controlled by their parents had less dt and dft. When the parents disagreed with each other regarding their attitude toward child-raising, their children had high dt and low ft. Therefore, it was suggested that parents' attitude toward child-raising might have a significant influence on the dental condition of small children. Further studies are needed, because the questioner had some problems concerning parents with 18-month-olds, and the relationship between parents' attitude and the dental health condition was not so strong.View full abstractDownload PDF (976K) -
Izumi IWAYA, Yoshiharu MUKAI, Hiromi FUKUKAWA, Toshio TERANAKAArticle type: Article
2009 Volume 59 Issue 2 Pages 125-131
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSIn this study, we assessed the acid resistance of bovine enamel coated with a temporary fluoride-releasing flowable composite resin (BeautiCoat: BC) following vital bleaching with the HiLite (Hi) system. Each tooth received nine Hi applications before BC was applied. The teeth were stored in remineralization solution for 10 days. BC was then removed and the specimens underwent acid resistance testing for 10 days. The mineral profile and integrated mineral loss (IML) were obtained using transversal microradiography. Subsurface lesions were present in all specimens; however, the mean IML of specimens in the HiBC (no-primer) group was significantly lower than that in the Hi-alone group. On the other hand, the HiBC with primer group showed a similar IML to the Hi group. This suggests that the remineralization solution penetrates into the micro-spaces between the enamel and BC when the primer is not used. In addition, fluoride released from the surface pre-reacted glass-ionomer filler contained in BC may disperse in the micro-spaces and adhere to the enamel surface, thus inhibiting the progression of lesions.View full abstractDownload PDF (945K)
REPORT
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Masaaki YOKOYAMA, Masami YOSHIOKA, Yoko ABE, Hiromi FUJII, Naoko MATSU ...Article type: Article
2009 Volume 59 Issue 2 Pages 132-140
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSIntensive oral care during the perioperative period can reduce oral biofilm, which represents a risk factor for respiratory diseases such as aspiration and ventilator-associated pneumonia. The aim of this study was to establish a standardized procedure for oral care in order to reduce the risk of infectious disease complications in inpatients undergoing respiratory care in the Intensive Care Unit (ICU) of Tokushima University Hospital. In collaboration with nurses, professional oral care was provided once a day to inpatients at high risk of respiratory infections. At the initial oral examination, the majority of patients in the ICU had dry lips, and showed a tongue coating and the presence of oral debris (i.e., dental plaque and/or sputum) on tooth and oral mucosa surfaces. In addition, we sometimes observed ulcer formation in the oral mucosa as well as tooth mobility, which are conditions that ICU staff members should pay attention to when fixing the endotracheal tube. Our professional oral care procedure reduced oral debris, dry mouth, and oral malodor to some extent in the majority of ICU patients. Close cooperation between dental professionals, nurses, and medical doctors was promoted through this activity. In conclusion, the multi-professional team approach adopted in this study means that patients in the ICU can be provided with advanced oral care, and it may contribute to reduce the risk of infectious disease complications.View full abstractDownload PDF (1352K) -
Shoji HARADA, Mari FUJITA, Okahito HONDA, Manabu MORITAArticle type: Article
2009 Volume 59 Issue 2 Pages 141-147
Published: April 30, 2009
Released on J-STAGE: March 30, 2018
JOURNAL FREE ACCESSWe encountered a case of impacted maxillary molars in a 14-year-old girl. The mandibular right second permanent molar was over-erupted. It was a very rare and complicated case requiring prolonged and costly orthodontic treatment. School children undergo a dental examination every year at school. A school dentist should have previously suspected a delay in the eruption of the maxillary first molar when the present patient was 8 years old during school dental examination. However, the patient visited a dental clinic at the age of 14, indicating that post-examination care was not given. School dental examination had been conducted for a total period of 5 years without any post-examination care. If the patient had been referred to a family dentist or an orthodontist promptly, less complicated treatment would have been possible. This was a typical case that showed the importance of post-examination care after conducting a school dental examination. It is the social responsibility of dentists to not only treat patients at dental clinics but also contribute to the promotion of school children's health through school-based examinations. School dentists should therefore be strongly requested to conduct oral examinations carefully based on a sense of duty.View full abstractDownload PDF (2176K)
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