Showing 9 results for Ergonomic
J. Nasl Saraji , Mh. Hosseini , Sj. Shahtaheri , F. Golbabaei, M. Ghasemkhani ,
Volume 18, Issue 1 (3-2005)
Abstract
Statement of Problem: Musculoskeletal disorders (MSDs) are major parts of the occupational diseases in workplaces. Protection from such diseases is dependent on assessment and improvement of job postures by using job analysis methods in ergonomics.
Purpose: This study was aimed to evaluate ergonomic conditions in dental professions by rapid entire body assessment (REBA) in Birjand city and also to assess the relation between MSDS in different parts of the body and work conditions.
Materials and Methods: This study was a descriptive-analytical approach performed on 48 persons working at different professions by using REBA method. The prevalence of MSDs was obtained by using Nordic Musculoskeletal Questionnaire (NMQ). The data were analyzed by independent t-test, Chi-square and Fisher tests with P<0.05 as the limit of significance.
Results: In this investigation, the prevalence of disorders for different parts of the body was as follows: 65% for neck, 60% for back, 38% for shoulders, and 31% for wrist. These disorders were higher in women than men except for the back. There were significant correlation between disorders of femur and foreleg with work history, ankle and sole with body mass index (BMI), and MSDs with work conditions (P<0.05).
Conclusion: It is concluded that the work conditions and postures need to be improved. In addition the level of dental professional education regarding biomechanical hazardous effects as well as correct work conditions and postures should be increased.
H. Dargahi, J. Saraji, J. Sadr, G. Sadri,
Volume 22, Issue 4 (1-2010)
Abstract
Background and Aims: There are several risk factors in dentistry professional environment. Carelessness about occupational health regulation endangers dentist's life. Erconomics in dentistry is a scientific approach which introduces the latest ergonomic principles in dental profession. It discusses about physical and mental stresses. Ergonomic programs eliminate dentist physical and mental challenges and provide practical solution to establish efficient and comforting environment.
Materials and Methods: This study reviewed the role and effectiveness of Ergonomics in dental profession. We used related journals, books and ergonomics websites to write this article.
Conclusion: Many of researchers believe that awkward body posture and low movement are the sources of occupational disorders. Therefore, knowledge of ergonomics risk factors in dental office design is very important. Dentist's body posture and dental equipment evaluations are important factors in dental ergonomics. The most logical approach to design dental equipment for utilizing ergonomics principles is consideration of the dentist posture and type of movements and activities. In conclusion, dentists should be informed about dental ergonomics regulation and its different aspects. Furthermore, academic developments and research projects can be useful in this area.
S. Yaghobee , V. Esmaeili ,
Volume 23, Issue 2 (10-2010)
Abstract
Background and Aims: Musculoskeletal disorders in dentists due to abnormal postures may result in economic and health problems. To prevent these problems, the working posture of dental students should be assessed and corrected in dental procedures. This study determine these problems and the effect of training courses on them by Rapid Entire Body Assessment method (REBA).
Materials and Methods: The posture of 69 students were assessed by REBA before and after of the “Ergonomic principles in dentistry” course. The subjects which were used in the training course were based on the previous studies on this issue. The REBA scores were assessed by SPSS software using Paired T-test.
Results: The results showed that the students’ posture should be corrected. Postures of 94.2% of students were in moderate and high risk level which needed to be corrected. The worst working positions were during surgery, endodontic and pediatric dentistry procedures. Although the REBA scores before and after training course were statistically different (P<0.05), the training did not improve the posture of students remarkably.
Conclusion: The students’ working postures should be improved. One-day ergonomic principles course improved the working posture of students but it was not sufficient. More training and instructions are needed to have a good working position in dental procedures.
Sara Koosha, Masoomeh Kandi Bidgoli, Azadeh Raouf, Reza Ezatian,
Volume 29, Issue 2 (11-2016)
Abstract
Background and Aims: Constant dynamic and static activities are considered as the main cause of musculoskeletal problems among dentists. The aim of this study was to evaluate the musculoskeletal problems and related factors among dentists in specialized clinics and dental schools in Tehran in 2014 using the REBA method.
Materials and Methods: In this cross-sectional study, the dentists from clinics of dental schools in Tehran were selected as individual targets. Nordic anddemopghrphic questionnaire were completed through interview from dentists. In order to assess the musculoskeletal disorders, REBA method (Rapid Entire Body Assessment) was used. In this method, positions and postures of the dentists during their work was observed and recorded. Data was analyzed using Regression Logestic test.
Results: The obtained results showed that among 100 dentist, 6% were in the very high risk (15-11) for musculoskeletal problems and 17% and 25% were in high-risk (10-8) and average risk (7-4), respectively. Based on the findings from Nordic questionnaire, the most skeletal- muscle travail were related to the neck (60%), lumbar (58%) and rear (46%) consequently. It seemed that factors such as gender, body mass index (BMI), height, specialty, body posture during the work (standing or sitting), smoking and using the direct or indirect vision, had an impact on the musculoskeletal disorders.
Conclusion: Findings from the final scoring of REBA showed that a high percentage of dentists were struggling with skeletal- muscle problems and they were in moderate to high range of risk for these type of disorders.
Roghieh Aliakbari, Mohammad Vahedian-Shahroodi, Hadi Tehrani, Habibollah Esmaeili, Rajabali Hokmabadi,
Volume 31, Issue 1 (6-2018)
Abstract
Background and Aims: The dentistry profession is one of the most injuring professions that causes most pains and hurts for dentists because of their lack of knowledge about the ergonomic position through the work. The purpose of this study was to assess the ergonomic position of dentists with RULA method in dentists of Bojnord.
Materials and Methods: In this cross-sectional study, all of the Bojnord’s county dentists were selected. RULA method and Nowerdik questionnaire were used for investigating the agronomical position, and muscular-skeleton position, respectively. The analysis was done by SPSS22 using regression and chi-square test. A P-value of less than 0.005 was assumed as significant.
Results: The most muscle-skeleton reports were 55.6% (35 persons) related to back, 54% (34 persons) related to shoulders, 50.8% (32 persons) related to waist, and 47.6% (30 persons) related to neck aches. In the last 12 months, 90.5% of dentists reported pains from at least one of organs of their bodies and 27% were supposed to leave their works which the sex (P=0.84), length (P=0.75), and weight (P=0.38) were not significantly related to this case.
Conclusion: According to the results of this study educational interventions is essential to prevent the musculoskeletal disorders in dentistry.
Neda Karghahi, Saeedeh Khalesi, Kamyar Safaeepour, Ehsan Hekmatian, Hoda Jafari,
Volume 33, Issue 4 (1-2021)
Abstract
Background and Aims: Human ergonomics or engineering with proper design and change of work and requirements creates the most productivity based on human physiology. The purpose of this study was to determine the level of awareness of dental students of Isfahan University of Medical Sciences about the basic principles of ergonomics in dentistry.
Materials and Methods: In this descriptive-analytical, sectional study, a questionnaire containing 10 questions was distributed and completed by easy sampling method among 74 final year students of the general doctorate of Isfahan school of dentistry. After collecting the questionnaires, the students were given an educational pamphlet. To evaluate the questionnaires, each correct answer was given a score of one and the wrong answers were given a score of zero. Data were analyzed by T-test, Kai Square, and Mann-Whitney statistical tests using SPSS23 software. P<0.05 was considered as a significant level. P<0.05 was considered as a significant level.
Results: The average score of the knowledge of principles of ergonomics was intermediate (6.23±1.25). Student knowledge was not significantly different based on the student gender (P=0.25) and academic semester (P=0.059). Also, 55% of students had a history of muscle pain that did not have a significant relationship with gender (P=0.258) and average score of the knowledge (P=0.288).
Conclusion: Unfortunately, ergonomics cannot be considered part of the principles of dental education and even later. Musculoskeletal pain is one of the most common complaints of dentists and is a factor in reducing their quality and function. Therefore, it seems that training and evaluation of ergonomic principles in dental education is necessary.
Zahra Borna, Azad Jamei, Mojtaba Ghorbanian, Saman Taram,
Volume 35, Issue 0 (5-2022)
Abstract
Background and Aims: The objective of this study was to evaluate the knowledge, attitude, and practice of ergonomics during dental treatment among students of Urmia university of medical sciences in 2020.
Materials and Methods: In this descriptive-analytical study, self-administered questionnaires were given to 78 dental students of Urmia University in 2020 and the knowledge, attitude, and practice of every participant were evaluated. Demographic data including sex, age, and University grade were recorded as well. Data were analyzed by SPSS software24 with One Way ANOVA and t-test and the significance level of P<0.05.
Results: 78 students (44 males and 34 female) by Mean Age 23.9±2.12 were included in the study. The difference between the attitudes of different age groups was significant (P=0.006). The age group of 20 to 24 years had a more positive attitude than other age groups. However, the results of this study did not show a significant r elationship between the participants' knowledge and practice with their age (P>0.05).
Conclusion: According to this study, the knowledge, attitude and practice of Urmia dental students were in the desired range. 20-24 year students had significantly higher attitude in comparison to others. Therefore, more endeavors should be taken to improve these parameters in ergonomics.
Hojatollah Yousefimanesh, Shahin Goharpay, Sara Kachi Torshaki,
Volume 38, Issue 0 (4-2025)
Abstract
Background and Aims: A large number of dentists are exposed to all kinds of musculoskeletal disorders caused by this profession. This study was conducted with the aim of measuring the prevalence of musculoskeletal problems and its effect on the quality of life of faculty members.
Materials and Methods: The present study was a descriptive analytical study that was conducted by surveying faculty members of the Faculty of Dentistry, Ahvaz University of Medical Sciences in the form of a census. Standard Nordic questionnaires were completed to investigate musculoskeletal problems and quality of life questionnaire. Also, the dentists were asked to determine and mark the level of pain experienced based on the Visual Analogue Scale (VAS). Data was analyzed using t test and chi square test.
Results: In this study, 73 academic staff members were examined, 46 (63%) were women and 27 (37%) were men. The most pain and disorder in the past year was related to the neck (64.4%) and shoulder (56.2%) of participates. The participates that prevented from working because of back pain and of neck pain during the last 12 months were 32(43.8% ) and 31(42.5%), respectively. Most of them (63%) were under 40 years old and the majority have graduated from general and specialized courses, 57.5 % and 37%, respectively, for more than 10 years. In examining the quality of life, the highest score related to the physical function which was 76.98±25.38.
Conclusion: There was a significant statistical relationship between the gender, age and duration of graduation from general and specialized courses with the skeletal and muscular disorders. However, there was no significant statistical relationship between the different aspects of life quality and skeletal and muscular disorders.
Amin Shahsavar Mistani, Alireza Babaei Darzi, Mohammad Taghipour, Seyedali Seyedmajidi, Meisam Moradi,
Volume 39, Issue 0 (3-2026)
Abstract
Background and Aims: Musculoskeletal disorders (MSDs) are among the most common occupational health problems faced by dentists. Given their impact on dentists’ health and performance, the present study aimed to investigate the prevalence of MSDs among general and specialist dentists practicing in Babol, Iran.
Materials and Methods: In this cross-sectional study, the standardized Nordic questionnaire, consisting of general and specific sections, was distributed in person among dentists practicing in Babol, based on data obtained from the local Medical Council. Distribution was carried out after a telephone invitation and confirmation of willingness to participate. The questionnaire included items regarding pain and discomfort in different body regions such as the neck, shoulders, and lower back. The frequency of participants with MSDs was assessed based on gender, right/left handedness, specialty, playing sports, and participating in a specific sport. The mean age, weight, height, body mass index, weekly working hours, and work experience of dentists with and without MSDs were also compared. Data were analyzed using SPSS software version 22, employing independent t-tests, Chi-square tests, and Fisher’s exact test, with a significance level set at 0.05.
Results: Of the 182 dentists approached, 17 declined participation and 5 met the exclusion criteria. A total of 160 dentists (mean work experience: 15.65 ±9.26 years) were included in the study; of these, 100 (62.5%) were male, 95 (59.4%) were general practitioners, and 65 (40.6%) were specialists. The overall prevalence of MSDs in this population was reported to be 90%. The most commonly affected region was the neck (76.4%), while the least affected was the ankle (3%). A statistically significant association was found between engaging in a specific type of regular physical activity and a reduced incidence of MSDs (P<0.001). No significant associations were observed with other variables such as gender, handedness, specialty, or field of specialization (P>0.05). Furthermore, no significant differences were found in the mean height, weight, body mass index, weekly working hours, or years of experience between dentists with and without MSDs (P>0.05).
Conclusion: Musculoskeletal disorders are highly prevalent among dentists in Babol. Given this high prevalence, the development and implementation of educational programs on ergonomics, along with recommendations for targeted physical activity appear to be essential.
