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Yuksel B, Arsal Yildirim S. Determination of cytogenetic abnormalities in buccal mucosa of dental laboratory technicians. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2021; 77:165-172. [PMID: 34184977 DOI: 10.1080/19338244.2021.1943641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study aims to investigate the toxic effects of metals, which dental technicians are exposed to, on the oral mucosa cells in dental prosthesis laboratories (DPL). To monitor cytotoxic effects, mutations of pyknosis, Karyolysis Karyorrhexis, binucleus, micronucleus, and broken-egg were evaluated. Experimental group comprised of a total of 30 volunteer DPL employees from various DPLs, and 30 teachers and office workers were volunteered to be a part of the control group. Age range of DPL employees and whether they consume alcohol or smoke cigarettes were also considered as sub-variables. Peripheral smear technique was applied by taking samples from the oral mucosa of the experimental group and the control group. Anomalies determined between technicians and control group were statistically significant (p < .05). However, our findings revealed that the sub-variables (ie, age range, alcohol, and smoking) did not significantly affect the anomalies.
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Affiliation(s)
- Burcu Yuksel
- Kocaeli University, Kocaeli Vocational School of Health Services, Kocaeli, Turkey
| | - Serap Arsal Yildirim
- Kocaeli University, Kocaeli Vocational School of Health Services, Kocaeli, Turkey
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Ishikawa S, Konta T, Susa S, Ishizawa K, Togashi H, Ueno Y, Yamashita H, Kayama T, Iino M. Association between presence of 20 or more natural teeth and all-cause, cancer-related, and cardiovascular disease-related mortality: Yamagata (Takahata) prospective observational study. BMC Oral Health 2020; 20:353. [PMID: 33267797 PMCID: PMC7709387 DOI: 10.1186/s12903-020-01346-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/23/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Several studies have surveyed the relationship between the presence of ≥ 20 natural teeth and mortality. However, very few have evaluated this association over a long-term follow-up of more than ten years within a large population in Japan. This study aimed to prospectively confirm the associations between mortality and the presence of ≥ 20 natural teeth within a community-based population in Japan. METHODS A prospective observational study including 2208 participants aged ≥ 40 years was conducted in Takahata Town, Japan, between May 2005 and December 2016. All participants answered a self-administered questionnaire to provide their background characteristics, including their number of teeth. The participants were classified into two categories based on their self-reported number of teeth (< 20 and ≥ 20 teeth). Hazard ratios (HR) and 95% confidence intervals (CI) were calculated using Cox proportional-hazards regression model to assess risk factors for all-cause, cancer-, and cardiovascular disease-related mortality. RESULTS The total follow-up period was 131.4 ± 24.1 months (mean ± SD). After adjusting for covariates, the risk of all-cause mortality was significantly higher in the group with < 20 teeth than in those with ≥ 20 teeth (HR = 1.604, 95% CI 1.007-2.555, p = 0.047). However, the risk of cancer- and cardiovascular disease-related mortalities was not statistically significant between the two groups. CONCLUSION In this study, participants with < 20 teeth had a significantly higher risk of all-cause mortality, although the difference was borderline significant. These results emphasize the importance of having ≥ 20 natural teeth for a healthy life expectancy.
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Affiliation(s)
- Shigeo Ishikawa
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan.
| | - Tsuneo Konta
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
| | - Shinji Susa
- Department of Neurology, Hematology, Metabolism, Endocrinology and Diabetology, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
| | - Kenichi Ishizawa
- Department of Neurology, Hematology, Metabolism, Endocrinology and Diabetology, Yamagata University Faculty of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan.,Global Center of Excellence, Yamagata University School of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
| | - Hitoshi Togashi
- Yamagata University Health Administration Centre, 1-4-12 kojirakawa-machi, Yamagata, 990-8560, Japan
| | - Yoshiyuki Ueno
- Global Center of Excellence, Yamagata University School of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
| | - Hidetoshi Yamashita
- Global Center of Excellence, Yamagata University School of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
| | - Takamasa Kayama
- Global Center of Excellence, Yamagata University School of Medicine, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
| | - Mitsuyoshi Iino
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan
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Arsal Yıldırım S, Pekey B, Pekey H. Assessment of occupational exposure to fine particulate matter in dental prosthesis laboratories in Kocaeli, Turkey. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:667. [PMID: 33006063 DOI: 10.1007/s10661-020-08620-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 09/17/2020] [Indexed: 06/11/2023]
Abstract
Dental prosthesis laboratories (DPLs) are among the workplaces where predominantly manual production takes place. In such working environments, during the manual manufacturing process, which involves fine smoothing and polishing of dental prostheses, fine particulate matter is released into the ambient air. In this study, the particulate matter (PM) concentrations and elemental content of the fine particles in the working ambient air were identified in six DPLs in Kocaeli, Turkey. PM2.5 mass concentrations, measured in all the DPLs, ranged between 80.8 and 1645 μg/m3 (mean 414 ± 406). As a result of the analyses performed with an ICP-MS device (Perkin Elmer Elan®DRC-e), trace elements of Be, Cd, Hg, and, notably, Co, Cr, Mo, and Ni were found. The researchers calculated the excess lifetime cancer risks and total hazard indexes. The average total cancer risk for all the DPLs was 8 × 10-3, which is higher than the acceptable limit of 1.0 × 10-6, and the total hazard index was 187, which is greater than the acceptable limit of 1.0. Considering these high-level risks, the study concluded that there is a need for new production methods, and strict application of occupational health and safety measures, to reduce the fine particle exposure of the workers in the laboratories. In addition, there are prescribed limit values for particulate matter only for respirable particles in working environments. The establishment of limit values, especially for PM2.5 concentrations, is important for the protection of the health of the employees.
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Affiliation(s)
- Serap Arsal Yıldırım
- Vocational School of Kocaeli Health Sciences, Kocaeli University, Kocaeli, Turkey.
| | - Beyhan Pekey
- Department of Environmental Engineering, Kocaeli University, Kocaeli, Turkey
| | - Hakan Pekey
- Department of Environmental Engineering, Kocaeli University, Kocaeli, Turkey
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Goenharto S, Rusdiana E, Putra D. Exposure of methacrylate from acrylic dust generated by removable orthodontic appliance fabrication in Surabaya, Indonesia. J Int Oral Health 2020. [DOI: 10.4103/jioh.jioh_82_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Ishikawa S, Konta T, Susa S, Ishizawa K, Togashi H, Ueno Y, Kubota I, Yamashita H, Kayama T, Iino M. Fewer teeth are a risk factor for being underweight in community-dwelling Japanese aged 40 years and older: The Yamagata (Takahata) Study. Int J Dent Hyg 2018; 17:244-252. [PMID: 30431235 DOI: 10.1111/idh.12374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/23/2018] [Accepted: 11/11/2018] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The aim of the present study was to investigate comprehensively, the risk factors for underweight in cross-sectional study in the general population of Japan. METHODS The survey population was the general population of individuals aged >40 years in Takahata town, Japan in 2005. A postal survey in the form of a self-administered questionnaire was distributed, and 6084 individuals were entered into the final statistical analysis. The self-administered questionnaire contained items regarding lifestyle, oral health status, socio-economic status and dietary intake. To examine the independent relationships between an underweight status and several parameters, a multivariate logistic regression analysis was used to estimate adjusted odds ratios (ORs). RESULTS The number of teeth, age, alcohol consumption, hypertension, spousal status, smoking habit, appetite, body weight at 20 years of age, habit of going out and physical activity were independently associated with an underweight status compared with the normal weight group. Individuals with fewer than 10 teeth were especially more likely to be underweight than individuals with more than 20 teeth (OR = 1.956, 95% CI = 1.261-3.035). CONCLUSION This study showed an independent association between the number of teeth and an underweight status, indicating that fewer teeth can increase the risk of being underweight.
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Affiliation(s)
- Shigeo Ishikawa
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Tsuneo Konta
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medicine, Yamagata, Japan
| | - Shinji Susa
- Department of Neurology, Hematology, Metabolism, Endocrinology and Diabetology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Kenichi Ishizawa
- Department of Neurology, Hematology, Metabolism, Endocrinology and Diabetology, Yamagata University Faculty of Medicine, Yamagata, Japan.,Global Center of Excellence, Yamagata University School of Medicine, Yamagata, Japan
| | - Hitoshi Togashi
- Yamagata University Health Administration Center, Yamagata, Japan
| | - Yoshiyuki Ueno
- Global Center of Excellence, Yamagata University School of Medicine, Yamagata, Japan
| | - Isao Kubota
- Global Center of Excellence, Yamagata University School of Medicine, Yamagata, Japan
| | - Hidetoshi Yamashita
- Global Center of Excellence, Yamagata University School of Medicine, Yamagata, Japan
| | - Takamasa Kayama
- Global Center of Excellence, Yamagata University School of Medicine, Yamagata, Japan
| | - Mitsuyoshi Iino
- Department of Dentistry, Oral and Maxillofacial Plastic and Reconstructive Surgery, Faculty of Medicine, Yamagata University, Yamagata, Japan
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Risk factors for tooth loss in community-dwelling Japanese aged 40 years and older: the Yamagata (Takahata) study. Clin Oral Investig 2018; 23:1753-1760. [DOI: 10.1007/s00784-018-2604-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/22/2018] [Indexed: 12/26/2022]
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Nakamura A, Itaki C, Saito A, Yonezawa T, Aizawa K, Hirai A, Suganuma H, Miura T, Mariya Y, Haghdoost S. Possible benefits of tomato juice consumption: a pilot study on irradiated human lymphocytes from healthy donors. Nutr J 2017; 16:27. [PMID: 28494764 PMCID: PMC5427617 DOI: 10.1186/s12937-017-0248-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 05/01/2017] [Indexed: 12/11/2022] Open
Abstract
Background Reactive oxygen species (ROS) mediate much of the DNA damage caused by ionizing radiation. Among carotenoids, lycopene and β-carotene, present in tomato juice, are known to be strong radical scavengers. The aim of the study was to investigate the effect of tomato juice intake on the levels of DNA damage and oxidative stress in human whole blood induced by in vitro exposure to X-rays. Methods Ten healthy adults were asked to drink 190 g of tomato juice, containing 17 mg lycopene and 0.25 mg β-carotene, per day for 3 weeks and then refrain from drinking it for 3 weeks. Peripheral whole blood samples were collected before and after the intake period of tomato juice and after the washout period. The blood samples were exposed in vitro to X-ray doses of 0, 0.1, 0.5, and 2 Gy. Cytogenetic damage was measured using the cytokinesis-block micronucleus (CBMN) assay and the dicentrics (DIC) assay. The level of oxidative stress was determined using serum 8-oxo-7, 8-dihydro-2-deoxyguanosine (8-oxo-dG) and plasma reactive oxygen metabolite-derived compounds (d-ROMs). The concentration of carotenoids in plasma was measured at the three time points. Results The levels of 8-oxo-dG tended to decrease during the intake period and increase during the washout period. A non-significant inverse correlation was noted between the plasma concentration of lycopene plus β-carotene and the level of 8-oxo-dG (P = 0.064). The radiation-induced MN and DIC frequencies increased in a dose-dependent manner, and when compared at the same dose, the MN and DIC frequencies decreased during the intake period compared with those at baseline and then increased during the washout period. The results suggest that continuous tomato juice consumption non-significantly decreases extracellular 8-oxo-dG, d-ROMs, and MN. Tomato juice intake had minimal or no effect on radiation-induced 8-oxo-dG and d-ROMs. For most radiation doses, continuously tomato juice intake lowered the levels of MN and DIC. Conclusion Tomato juice consumption may suppress human lymphocyte DNA damage caused by radiation, but further examination is required. Trial registration 2014-001 and 2014-R06.
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Affiliation(s)
- Ayumi Nakamura
- Department of Radiological Life Sciences, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan
| | - Chieko Itaki
- Department of Disability and Health, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan
| | - Ayako Saito
- Department of Clinical Laboratory Medicine, Hirosaki Central Hospital, Aomori, 036-8188, Japan
| | - Toko Yonezawa
- Department of Clinical Laboratory Medicine, Hirosaki Central Hospital, Aomori, 036-8188, Japan
| | - Koichi Aizawa
- Nature and Wellness Research Department, Innovation Division, KAGOME CO., LTD., Tochigi, 329-2762, Japan
| | - Ayumi Hirai
- Nature and Wellness Research Department, Innovation Division, KAGOME CO., LTD., Tochigi, 329-2762, Japan
| | - Hiroyuki Suganuma
- Nature and Wellness Research Department, Innovation Division, KAGOME CO., LTD., Tochigi, 329-2762, Japan
| | - Tomisato Miura
- Department of Pathologic Analysis, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan
| | - Yasushi Mariya
- Department of Radiological Life Sciences, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan.
| | - Siamak Haghdoost
- Center for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, SE-106 91, Sweden
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Annangi B, Bonassi S, Marcos R, Hernández A. Biomonitoring of humans exposed to arsenic, chromium, nickel, vanadium, and complex mixtures of metals by using the micronucleus test in lymphocytes. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2016; 770:140-161. [DOI: 10.1016/j.mrrev.2016.03.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 02/15/2016] [Accepted: 03/01/2016] [Indexed: 12/13/2022]
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Hariyani N, Berniyanti T, Setyowati D. Effects of Occupational Environmental Controls on the Level of Co, Ni and Cr among Dental Technicians. ACTA ACUST UNITED AC 2015. [DOI: 10.7763/ijesd.2015.v6.673] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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