This review evaluated evidence of the relationship between secondhand smoke (SHS) and dental caries in children in epidemiological studies. Relevant literature was searched and screened, and the methodological quality was assessed. The search yielded 42 citations. High-quality studies including one cohort format and 14 case-control format studies were selected. Early childhood caries was examined in 11 studies. The independent association of SHS was significant in 10 studies, and the strength was mostly weak to moderate. One study did not select SHS as a significant variable. Three studies reported decreases in the risk of previous exposure, and the association was not significant. Dose-response relationships were evident in five studies. Permanent teeth were examined in seven studies. Five studies reported significant associations, which were mostly weak. The risk of previous exposure remained similar to that of current exposure, and a dose-response relationship was not evident in one study. The overall evidence for the causal association in early childhood caries is possible regarding epidemiological studies, and the evidence of permanent teeth and the effect of maternal smoking during pregnancy were insufficient. The results warrant further studies of deciduous teeth using a cohort format and basic studies regarding the underlying mechanism.
BackgroundTo examine facilitators of dental smoking intervention practices in Japan, where smokeless tobacco is rarely used, we evaluated the characteristics of dental care for smokers.MethodsCommunity dentists volunteered to record the treated disease or encounter with patients that was principally responsible for their dental care on the survey day. Patients were classified into groups receiving gingival/periodontal treatment (GPT), caries/endodontic treatment (CET), prosthetic treatment (PRT), periodical check-up/orthodontic treatment (POT), or other encounters/treatments. Potential effect of dentist clustering was adjusted by incorporating the complex survey design into the analysis.ResultsData of 2835 current smokers (CS) and 6850 non-smokers (NS) from 753 clinics were analysed. Distribution of treatments significantly differed between CS and NS (P = 0.001). In ad hoc multiple comparisons for each treatment, CS were significantly higher than NS for CET (47.1% vs. 43.6%, P = 0.002), and lower for POT (1.6% vs. 2.7%, P = 0.001), whereas GPT and PRT proportions were equivalent by smoking. When stage of disease progression was compared in the GPT subpopulation, CS were more likely received treatment for advanced stage disease than NS in the age groups of 40–59 years (24.9% vs. 15.3%, P = 0.001) and more than 60 years (40.8% vs. 22.1%, P < 0.001). However, the difference was less apparent in the entire population (9.7% vs. 6.0%), and CS were not predominant among patients receiving GPT for advanced stage disease (37.6%).ConclusionsThe association of smoking with type of dental care of CET and GPT severity would warrant the need for dental professionals to engage their patients smoking within clinical practice. The detrimental effects of smoking in dental care for smokers, as evidenced by the distribution of treatment and encounter and stage of treated disease, may not be clearly realized by dental professionals, unless the smoking status of all patients is identified.
The negative correlation between the aspiration to acquire medical knowledge and the perception of dentist oversupply under the circumstance of the possibly excessive perception among community dentists invites further research on the benefits of teaching oral medicine to graduate entry students to build future working satisfaction.
Severe oral mucosal lesions are frequently observed during hematopoietic stem cell transplantation(HSCT). We investigated the improvement of oral mucosal lesions in patients before and after introducing professional oral health care (POHC)interventions prior HSCT. We retrospectively investigated 107 recipients of HSCT. Logistic regression analysis was used to evaluate the severity of oral mucosal lesions as an objective variable, and POHC interventions prior to transplantation, age, sex, stem cell source of transplantation, intensity of conditioning regimen, prior history of transplantation, total body irradiation, post-transplant methotrexate(MTX) , and risk of recurrence as explanatory variables. As a result, oral mucosal lesions were proven to be correlated with POHC interventions prior to transplantation (p=0.006;odds ratio[OR] , 0.307)and post-transplant MTX(p=0.007;OR, 3.291). This suggests that POHC interventions prior to HSCT and oral hygiene instructions to patients are effective in improving the severity of oral mucosal lesions during HSCT. (Journal of Hematopoietic Cell Transplantation 4 (1) :23-30, 2015.
Introduction This study aimed to investigate the prevalence of periodontal disease and the factors of the disease among high school students. Method The participants were all students aged 15–18 years (n = 1202) at a high school in Japan. The data on oral health perceptions and behaviours were collected by a questionnaire survey. The prevalence of periodontal disease among them was investigated with the partial community periodontal index (PCPI). A logistic regression analysis was used to identify the factors associated with the PCPI. Results A total of 1069 students (88.9%) participated in this study. The prevalence of gingival bleeding, calculus, pocket depth of 4–5 mm, and pocket depth of 6 mm or more were 44.2%, 42.2%, 11.4%, and 1.6%, respectively. Approximately one-third of the students had a fear of dental treatment, and only 28.4% used dental floss. The results of logistic regression analysis, adjusted for sex and school year, showed that not visiting dentists regularly, not using dental floss, brushing teeth for less than 5 min, fear of dental treatment, and drinking sports drinks frequently were positively associated with periodontal conditions. Conclusion This study identified a high prevalence of periodontal disease among Japanese high school students aged 15–18 years and its risk factors, such as poor oral health behaviours and fear of dental treatment.
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