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The prevalence of hepatitis C infection among the dentists of Yazd and assessment of their knowledge about hepatitis
Ma. Behnaz , F.   Behnaz , M. Mohammadzadeh ,
Volume 17, Issue 1 (7 2004)
Abstract
Statement of Problem: Hepatitis C is a relatively common infection which can be transmitted through accidental inoculation consequently dentists are highly at the risk of exposure to this virus.
Purpose: The aim of this study was to determine prevalence of Hepatitis C among the dentists of Yazd and to evaluate their knowledge about the existing ways for the transmission and prevention of this infection.
Materials and Methods: In this descriptive- analytic study which was performed periodically (2002), the sera of all dentists practicing in Yazd were tested (104 samples) in the laboratory of Yazd blood transfusion organization initially by 1st generation of Elisa for Anti HCV followed by Riba on positive samples to confirm the results. Meanwhile a questionnaire assessing their knowledge about hepatitis was completed the by the dentists. Data were analyzed by ANOVA and t test.
Results: None of the one hundred and four samples of sera were positive for Anti HCV. Mean score of their knowledge was 14.80 (of 20). The knowledge of 92.1% of them was at moderate to high level. No significant difference was observed between Yazd's dentists knowledge about hepatitis C in different age, gender and length of professional experience groups.
Conclusion: According to this study, the absence of HCV among the dentists of Yazd is mainly attributed to the low prevalence of HCV infection among general population, though it can also be an indicative of the knowledge and excellent performance of the dentists to prevent the transmission of infection through blood and saliva.
Oral health status and oral health related quality of life among patients with substance use in Isfahan province
Bahareh Tahani, Soroush Mohammadzadeh, Amin Reiszadeh,
Volume 38, Issue 0 (4-2025)
Abstract
Background and aims: Substance abuse is recognized as a serious public health issue. The aim of this study was to comprehensively assess the correlation between the substance use and oral health status  as well as its impact on the quality of life of addicts in a multi-center approach.
Materials and Methods: In this cross- sectional and analytical study in year 2023, individuals with a history of addiction who visited addiction treatment centers in Isfahan province were recruited conveniently and examined through questionnaires (about demographic information, methods of substance use, oral health behaviors, the use of dental services, and perceived oral health) and clinical examinations. The oral health-related quality of life (OHQOL) was assessed using the OHIP-14 questionnaire. Clinical examinations assessed DMFT, gingival index, mucosal lesions, temporomandibular joint disorder, and treatment needs of the individuals. Data were analyzed using ANOVA, t-tests, and linear regression models (α=0.05).
Results: 232 individuals with age of 45 ± 9.9, mostly male (94.8%) and married (68.5%) were recruited. About 50% of individuals never brushed their teeth. A total of 123 individuals (53%) used substances with moderate harm intensity (opium, hashish and cannabis). Pigmentation was the most common oral lesion. The mean DMFT was 19.27 ± 3 and the perceived oral health mean was 4.53 ±2.98 (out of 10). A total of 187 individuals (80.6%) required prosthetic treatment. The mean OHQOL was 15.93 ± 11.6. Functional limitation had the lowest (1.53), and psychological discomfort had the highest score (3.31) among the seven domains of OHQOL. The linear regression model (P<0.001 and R2=24%) found that the use of high-risk psychoactive substances, oral health behaviors, and age contributed to changes in DMFT. The OHIP linear regression model (P<0.001 and R2=36%) revealed that the duration of addiction, perceived oral health, age, self-employment, government jobs, and retirement contributed to changes in OHIP.
Conclusion: Compared to the general population, addicts have poorer oral health behaviors and more oral health problems, which significantly reduce their oral health-related quality of life.

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