Musculoskeletal Disorders and Working Posture among Dental and Oral Health Students

How does the consecutive use of intraoral scanners affect musculoskeletal health? A preliminary clinical study

BACKGROUND

Minimizing muscle strain and reducing the risk of musculoskeletal disorders associated with intraoral scanner (IOS) usage require ergonomic awareness, device selection, and workplace adjustments in dental practice. This preliminary clinical study aimed to simulate intraoral scanning tasks using wired and wireless IOSs and assess muscle activation and fatigue for both types.

MATERIALS AND METHODS

Fourteen participants performed intraoral scanning tasks using wired and wireless IOSs (i700; MEDIT), with weights of 280 g and 328 g, respectively. The same computer system and software conditions were maintained for both groups (N = 14 per IOS group). Electrodes were placed on arm, neck, and shoulder muscles, and maximal voluntary contraction (MVC) was measured. Surface electromyography (EMG) was performed during the simulation, and EMG values were normalized using MVC. The root mean square EMG (%MVC) and muscle fatigue (%) values were calculated. Statistical comparisons were performed using the Mann-Whitney U and Friedman tests, with the Bonferroni adjustment for multiple comparisons (α = 0.05).

RESULTS

Arm (flexor digitorum superficialis) and neck muscles (left sternocleidomastoid and left splenius capitis) showed significantly higher EMG values with wireless IOS (P < 0.05). The neck (left sternocleidomastoid and right levator scapulae) and shoulder muscles (right trapezius descendens) demonstrated significantly higher muscle fatigue with wireless IOS (P < 0.05).

CONCLUSIONS

The consecutive use of heavier wireless IOS may increase the risk of muscle activation and fatigue in certain muscles, which may have clinical implications for dentists in terms of ergonomics and musculoskeletal health.

Identification of prevalence of musculoskeletal disorders and various risk factors in dentists

Purpose

The awkward and repetitive movements lead to tissue straining, potentially leading to painful musculoskeletal disorders (MSDs). MSDs in dentists result in work inefficiency and a reduction in work hours. A survey was conducted to assess the prevalence of MSDs amongst the dental population of interest.

Methods

Customized individual detail questionnaires, Standard Nordic Musculoskeletal questionnaires, and Level of Pain estimation using the Likert Scale were used to deduce the various responsible risk factors for the occurrence of MSDs in dentists. Inferential statistical analysis was done to identify the prevalence and severity of the MSDs. The Chi-Square test (95 % confidence interval) was used to identify and compare the association of risk factors involved in MSDs with the occurrence of the Effect of MSDs, the presence of MSDs, and the severity of the MSDs.

Results

The results of the study deduced that the dentists followed the sedentary work practices. The dentists experienced maximum discomfort in the neck region, which was accompanied by the discomfort experienced in the lower back, hands and wrists, making the upper extremity being more susceptible to the MSDs. Gender risk factors the, the prevalence of MSDs in the dentist's upper back, and the severity of pain in the upper back region showed a significant association level.

Conclusion

The wrist posture, the prevalence of MSDs and the severity of pain in the dentists' neck, shoulder and upper back showed a significant association level.

Evaluating the Dental Hygienists' Exposure to the Risk of Musculoskeletal Disorders

OBJECTIVES

 The aim of the study was to evaluate dental hygienists' exposure to the risk of musculoskeletal disorders (MSDs), by the worksheets compatible with the Rapid Entire Body Assessment (REBA).

MATERIALS AND METHODS

 The research included 272 dental hygienists aged 23 to 52 years from the two administrative regions of Poland.

STATISTICAL ANALYSIS

 STATISTICA 12 and Microsoft Excel were used to analyse the results. The level of significance was p<0.05. The normality of the distribution was tested with the Shapiro-Wilk test. The relationships between the variables were assessed with the χ2 test. Due to the lack of "normality" of the REBA risk distribution, the Mann-Whitney test was used to verify the hypotheses.

RESULTS

 Overall, 48.5% of the examined showed a neck flexion >20, torsion of 80.1%, and 37.5% declared the presence of both types of loads. Also, 14.3% of the examined kept a vertical position, 53.7% flexion to the torso up to 20degrees, 31.4% to 60degrees, and 2.1% to >60degrees. Further, 78.3% of people indicated that they twist the torso. Then, 7% marked the low load's arms position, 45.6% marked the range from 20 to 45degrees, and 39.7% marked the range from 45 to 90degrees. Over 55% showed additional load related to the raising or abduction of the shoulders. Overall, 43% showed a wrong position of forearms. Also, 62.9% showed wrists flexed <15° and the rest showed >15degrees. Again, 79% showed additional twisting and flexion of the wrists. Almost 75% of the examined are exposed to overloads associated with the static load. The examined are not exposed to excessive loads resulting from sudden exertion. REBA scores indicate that the negligible MSDs risk concerns 0.7% examined; low risk, 5.5%; medium risk, 33,1%; high risk, 49.3%; and very high risk, 11.4%. The correlation coeffcients analysis showed that exposure risk is strongly correlated with the overloads on the tested parts of the body in both groups.

CONCLUSION

 The levels of MSDs risk indicate that hygienists more often should be subjected to periodic check-ups in the workplace. They also need ergonomic interventions (education, preventive technique, physical activity, and improvement of the working environment) and modifications of hygienist's college programs in the field of work ergonomics can be also considered.

Pinch force generation during scaling by dental professionals: A systematic review

OBJECTIVE

The objective of this review was to examine the impact of instrument designs on pinch force generation during scaling by dental professionals.

METHODS

Three databases were utilized from September 2019 to November 2021 in addition to hand-searching specific journals and reference lists. Research articles that examined pinch force generation in dental professionals during scaling with manual instruments only were included. Bias was assessed in the individual articles.

RESULTS

Six research articles were included with sample populations that varied from 12 to 24 participants. Four articles evaluated instrument designs in relation to pinch force generation during scaling by dental professionals. Two articles evaluated the clinicians' experience levels and the impact on pinch force generation. Results of three articles revealed instruments with large diameters and low weights produced the least amount of pinch force (p < 0.05). Additionally, two articles found instruments with a round, tapered shape produced less pinch force and instrument handles made of silicone produced higher pinch strength post-scaling (p < 0.05). One study indicated instrument designs associated with modified scaling techniques may reduce thumb and index finger pinch force (p < 0.05).

CONCLUSION

The findings from this review indicate weak evidence for instrument choices to reduce pinch force during scaling. Dental professionals should consider lightweight and large diameter instruments for manual scaling. Clinicians may also want to consider round, tapered handles and instrument designs with modified scaling techniques. This systematic review further identified the need for clinical research studies with rigorous research designs that examine the ergonomic impacts of instrument designs.

Musculoskeletal pain is prevalent in Chinese medical and dental students: A cross-sectional study

Objectives

Musculoskeletal pain (MSP) is a major reason for consultation in primary care and is becoming increasingly prevalent among medical students. There is little research on the current situation of MSP among Chinese medical and dental students. Data on the analysis of risk factors related to MSP are also limited. The objectives of this study were to investigate the prevalence and characteristics of MSP among Chinese medical and dental students and to explore the risk factors for MSP and students' intent to seek medical treatment.

Methods

An anonymous, internet-based, cross-sectional, open survey was distributed to medical and dental students at Fujian Medical University, Fuzhou, China. Data on the demographic information and characteristics of MSP were collected and analyzed. In addition to descriptive statistics, logistic regression was used to analyze significant risk factors contributing to MSP.

Results

A total of 1,178 students responded to the survey (response rate = 79.6%), including 722 medical students and 456 dental students. The age ranged from 16 to 24. There were 553 male students and 625 female students. A total of 523 students reported neck pain (NP, 44.4%), 361 students reported low back pain (LBP, 30.6%), and 182 students reported joint pain (JP, 15.4%). Sixty-six students (5.6%) simultaneously suffered from NP, LBP, and JP. The prevalence of NP (49.1 vs. 41.4%, P = 0.01), LBP (34.6 vs. 28.1%, P = 0.02), and JP (20.2 vs. 12.5%, P < 0.001) was significantly higher in dental students than in medical students. The prevalence of MSP was significantly different among the academic years for NP and LBP (P = 0.02 and P < 0.001, respectively). Univariate and multivariate regression analyses demonstrated that female sex, PSS-10 score, and major of stomatology were risk factors for MSP. Medical and dental students' intention to seek treatment for MSP was low and was significantly associated with the severity of pain.

Conclusions

The prevalence of MSP in Chinese medical and dental students is high, especially for NP and LBP, and is significantly higher in dental students than in medical students. The prevalence of NP and LBP were significantly different among academic grades. Female sex, PSS-10 score, and major of stomatology were risk factors for MSP. Students' intent to seek treatment for MSP was very low and was determined by the severity of pain.

Evaluation of the ergonomic sitting position adopted by dental students while using dental simulators

Background/purpose

Ergonomics in dentistry encourages the work to be in an organized manner, where a dentist achieves highest performance with maximum comfort and minimum physical and psychological effort. The purpose of this study was to evaluate the ergonomic sitting position of dental students from third, fourth and fifth year undergraduate programs while they prepared teeth 46 and 27 as Black Class I preparation for amalgam using dental simulators.

Materials and methods

Ten students were randomly selected from each year for this study. Photos and videos were taken from them to record their sitting position as they performed a Black Class I amalgam preparation in Nissin simulators.

Results

It was found that more students had a poor ergonomic sitting position while working in mandibular area (60%, torso and neck angle; 53% knee-angle; 50% elbow-angle). When comparing the average score between maxilla and mandible within students of the same year, fourth year students had a significant difference in their average, with a better performance in maxilla (P ≤ 0.01). They also showed better performance in maxillary area compared to fifth-year students (P ≤ 0.008). The main reasons that the students presented as justification for their bad posture were little work time, lack of knowledge, not knowing how to use indirect vision, and poor comfort.

Conclusion

Every undergraduate year had a compromised sitting position, with the exception of fourth-year students when working in maxillary area. No correlation between undergraduate year and performance was found.

Perception of risk factors at work associated with musculoskeletal symptoms in dental students of Melaka, Malaysia: A cross-sectional study

BACKGROUND: Dental professionals have been reported to be constantly exposed to work-related musculoskeletal disorders with symptoms often started as early as the student phase. Risk perception may play an important role in modifying risk at work. OBJECTIVE: To assess the influence of gender, academic level, and the presence of painful symptoms on the perception of risk factors at work contributing to musculoskeletal symptoms among dental students of Melaka, Malaysia. METHODS: A cross-sectional survey of 183 clinical year dental students based on a convenience sample. The data were collected using the Nordic Musculoskeletal Questionnaire and Job Factors Questionnaire for assessment of musculoskeletal symptoms and risk factors at work respectively. Study data were evaluated using percentage, median, Cochran’s Q test, Bonferroni correction, multiple linear regression analysis and Mann-Whitney U Test. The analysis was interpreted considering a 95 % confidence interval and significant level at P <  0.05. RESULTS: Dental students reported a high prevalence (86.9 %) of musculoskeletal symptoms mostly affected the neck, shoulder, lower and upper back body regions. No significant difference in perception was found with the gender. A significant (P <  0.05) higher perception was observed in fourth-year students. The presence of painful symptoms was significantly (P <  0.05) associated with working in the same position, prolonged duration of work and use of tools. CONCLUSIONS: Priority in implementing ergonomic education throughout the training in the dental schools should be considered to improve perception and reduce musculoskeletal disorders associated with the dental profession.

How Does the Use of an Intraoral Scanner Affect Muscle Fatigue? A Preliminary In Vivo Study

The purpose of this study was to evaluate muscle activation and fatigue in the operator during tooth preparation and intraoral scanning by simulating these tasks in two types of dental unit chair systems (UCS). Six participants were recruited, and the above tasks were simulated. Electrodes were placed on the skin over five types of muscles (arm, neck, and shoulder muscles), and the maximal voluntary contraction (MVC) was measured. Electromyography (EMG) was assessed during the simulation, and EMG values were normalized using MVC. The root mean square (RMS) EMG (%MVC) and muscle fatigue (%) were calculated. Owing to a lack of normal distribution of the data, Mann−Whitney U test and Kruskal−Wallis H test were performed for statistical comparison, and Bonferroni adjustment was performed for multiple comparisons (α = 0.05). There was no significant difference in RMS EMG between the two types of dental UCS (intraoral scanning, p = 0.237; tooth preparation, p = 0.543). Moreover, the RMS EMG and muscle fatigue were not significantly different between the two tasks (p > 0.05). There was significant muscle fatigue after the intraoral scanner use was simulated thrice (p < 0.001). It is necessary to refrain from performing continuous intraoral scanning and tooth preparation and to take appropriate rest to reduce the incidence of musculoskeletal disorders in dentists in clinical settings.

The Prevalence and Development of Neck and Lower Back Pain and Associated Factors in Dentistry Students—A Long-Term Prospective Study

Musculoskeletal disorders (MSDs) represent a significant occupational burden for dentists and dentistry students. This study aimed to assess the five-year development of most common musculoskeletal complaints among dentistry students during the whole length of their studies and to analyze the impact of some potentially associated risk factors. A longitudinal questionnaire survey regarding the occurrence of MSDs was conducted among a total of 73 dentistry students between 2014 and 2021. The same students enrolled in three consecutive years were monitored throughout their entire studies. Statistical analysis was performed using methods of descriptive statistics, Chi-square test, Fisher’s exact test, McNemar test, and univariate and multivariate logistic regression analyses. The most frequent areas of complaints were neck (61.6%) and lower back (49.3%). The increase in self-reported complaints between the first and the fifth year was statistically significant for neck pain (increase by 15%, p = 0.043) but not for lower back pain (by 6.8%, p = 0.44). According to our data, age, performing top-level sport, and participating in regular sporting activities had a statistically significant influence on neck and/or back pain. The results of this longitudinal prospective study showed that neck, as well as lower back pain, are significant problems for dentistry students.

Musculoskeletal complaints and associated factors among dental practitioners of Nepal: a nationwide survey

Musculoskeletal disorders (MSDs) constitute a significant occupational hazard among dental practitioners. An online-based e-survey was conducted among 252 registered dentists of Nepal using the Nordic musculoskeletal questionnaire (NMQ) to assess musculoskeletal complaints and work-related characteristics. Musculoskeletal complaints in lower regions were found to be highly prevalent among dental practitioners with prevalence of 76, 27 and 28.2% in the last 12 months, 1 month and 7 days, respectively, followed by musculoskeletal complaints in the neck, wrist/hand and shoulder. Musculoskeletal complaint during the last 12 months was significantly associated with age, years in dental practice after graduation and leave from duty in the past 12 months. Similarly, educational qualification, medical comorbidities and leave from duty were associated with complaints in the last 1 month. Musculoskeletal complaint during the last 7 days was associated with gender, working hours in a day, practice of four-handed dentistry and patients examined in a day.

Occupational ergonomic assessment of hand pain symptoms among Bagh hand block print artisans of the handicraft textile industry in Madhya Pradesh, India

Objectives. Hand block printing is a highly repetitive and precision job involving tasks such as hitting the wooden hand block with the hands as a hammer, causing chronic mechanical trauma to the ulnar side of the palm. This study aimed to determine the prevalence of work-related hand symptoms, to identify ergonomic risks and musculoskeletal disorders (MSDs) and evidence of mechanical trauma among artisans working in Bagh print of Madhya Pradesh. Methods. Occupational risk involved in the artisan's wrist area was identified using the modified Dutch musculoskeletal questionnaire (MDMQ) and modified Boston hand evaluation questionnaire. The Boston hand evaluation questionnaire helps in the measurement of the severity of the symptoms. A direct observation study was performed to identify the chronic effects of mechanical trauma (CEMT) on artisan's hands. Results. Symptoms like pain, weakness, numbness and tingling were highly prevalent among the artisans, those with experience <3 years were more likely to report pain during working hours (p < 0.001) and those with experience >13 years were more likely to report numbness (p < 0.001) and tingling (p < 0.001). Conclusion. This study supports the evidence that the new artisans are at higher risks of reporting pain and CEMT, including fever and body pain, ultimately causing job loss.

Ergonomic Risk Assessment of Dental Students-RULA Applied to Objective Kinematic Data

Musculoskeletal disorder (MSD) is already prevalent in dental students despite their young age and the short duration of dental practice. The current findings state that the causes of MSD are related to posture during dental work. This study aims to investigate the ergonomic risk of dental students. In order to analyze the ergonomic risk of dental students, 3D motion analyses were performed with inertial sensors during the performance of standardized dental activities. For this purpose, 15 dental students and 15 dental assistant trainees (all right-handed) were measured in a team. Data were analyzed using the Rapid Upper Limb Assessment (RULA), which was modified to evaluate objective data. Ergonomic risk was found for the following body parts in descending order: left wrist, right wrist, neck, trunk, left lower arm, right lower arm, right upper arm, left upper arm. All relevant body parts, taken together, exhibited a posture with the highest RULA score that could be achieved (median Final Overall = 7), with body parts in the very highest RULA score of 7 for almost 80% of the treatment time. Dental students work with poor posture over a long period of time, exposing them to high ergonomic risk. Therefore, it seems necessary that more attention should be paid to theoretical and practical ergonomics in dental school.

The effects of static seated and standing positions on posture in dental hygiene students: a pilot study

Background

Musculoskeletal disorders (MSDs) are highly prevalent among dental hygiene professionals. The purpose of this pilot study was to evaluate and compare seated and standing postures during simulated dental hygiene practice to determine ergonomic risks associated with each posture.

Methods

A convenience sample of 35 female second-year dental hygiene students with no history of musculoskeletal disorders was enrolled in this IRB-approved study. In 2 separate sessions, 1 seated and 1 standing, participants instrumented 1 quadrant of the mouth in a simulated oral environment. Two images per session, per participant, were taken to evaluate biomechanical demands of each posture using the Rapid Upper Limb Assessment (RULA) tool. The same 4 calibrated researchers scored all images independently and mean scores for each posture were analysed.

Results

Thirty-four students completed the study. Results revealed statistically significant (p = 0.001) differences in mean RULA scores between seated (M = 3.91, SD = 0.77) and standing (M = 4.50, SD = 1.00) postures, although these differences may not be clinically relevant.

Discussion

When postures were independently assessed, seated postures were more acceptable on average compared to standing postures, yet both were in the unacceptable range. Lack of training in standing postures may have impacted the results.

Conclusion

Results support the need for additional ergonomic training in dental hygiene curricula. Less than ideal posture when seated or standing could increase MSD risk. Future research should examine biomechanical loads of seated and standing postures, as well as the combination of these postures, for more insight into their ergonomic benefits and associated MSD risks.

Comparative analysis of preclinical dental students' working postures using dental loupes and dental operating microscope

BACKGROUND

Dentists are susceptible to musculoskeletal disorders due to prolonged static postures during dental treatments. Using a magnification tool like dental operating microscope (DOM) or the dental loupes may correct the operator's posture. Up until now, few studies have focused on preclinical dental students' posture when working with the DOM, while most of them have focused on the loupes. The aim of this study was to comparatively analyse the working posture of preclinical students during a dental restoration procedure, working with two different magnification methods.

MATERIALS AND METHODS

This study used a randomised cross-over design in which seventeen third year students were randomly divided into three groups. The exclusion criteria were previous contact with magnification systems and previous clinical working experience. Each student prepared 3 Black class 1 cavities on artificial lower molars: first with no magnification, following dental loupes and DOM. They were video-recorded throughout the preparation. Trunk, neck and upper-arm position were evaluated using the Posture Assessment Instrument. Students completed a questionnaire on their subjective perception of the two magnification systems.

RESULTS

The statistical analysis showed significant improvement of the working posture using magnification systems compared to direct vision. The biggest improvement was obtained through the use of DOM, followed by the dental loupes. Students perceived dental loupes as being the most comfortable and easy to adapt to. They reported being more focused when using DOM.

CONCLUSIONS

Both magnification systems had a positive impact on the working posture, DOM having the best results. Loupes showed better adaptability while DOM showed better concentration.

Analysis and prevention of ergonomic risk factors among dental students

INTRODUCTION

Dentistry is a high-risk profession for the development of work-related disorders. Dental students are also exposed to several risk factors. The goal of the study was to determine and localise musculoskeletal pain during dental work, afterwards to measure electromyography signals from the muscles groups mostly affected by the musculoskeletal pain. Study was done in order to provide possible suggestions for the most effective preventive measures of MS pain among dental students.

MATERIALS AND METHODS

In order to solve the objectives, the research was realised in two segments. In the first part of the study, specially designed questionnaires were used to determine the frequency of musculoskeletal pain, risk factors and preventive measures among students. The second part of the study included electromyography analyses of muscular activity of students during dental work. Inclinometers also were set up in the purpose of monitoring inclination of the spine.

RESULTS

Results of the questionnaire study indicated that pain during work was frequent, 81.8% of all the subjects reported pain during work. The recorded muscle activity of the neck muscles indicated a high ergonomic risk, while the muscle activity of the shoulders and back muscles indicated a medium risk. Work with a back flexion of 20 degrees and more indicates that students are at risk.

CONCLUSION

Dental students used to work in unnatural working position. High ergonomic risk occurred in neck muscles. Students should be aware of the potential risks during work and to learn how to prevent it. Regular physical activity is strongly suggested to the students in order to avoid ergonomic problems.

The Development of Musculoskeletal Disorders during Undergraduate Dentistry Studies-A Long-Term Prospective Study

Musculoskeletal disorders (MSDs) frequently occur among dental practitioners and present a significant occupational burden with an early onset in the dentists' career. This study aimed to analyze the five-year development of self-reported overall MSDs among the dentistry students during the course of their studies and to assess the possible influence of the risk as well as protective factors. The questionnaire inquiry was performed among the first-year dentistry students, regarding the occurrence of MSDs and the presence of potential risk and protective factors. The same students were followed, and they filled in the same questionnaire in the middle and at the end of their studies. A total of 73 dentistry students and 28 general medicine students participated. The occurrence of the overall MSDs statistically significantly increased from 30.1% at the beginning of the first year to 45.2% at the end of the fifth year among the dentistry students. The top-level sport was statistically significantly associated with the higher occurrence of MSDs in the fifth year and with the development of new MSDs between the first and the fifth year. This longitudinal prospective evaluation showed a significant increase in the MSDs occurrence among the dentistry students during their studies.

Using Theoretical Domains Framework for Exploring Appropriate Sitting Posture Determinants Among Office Workers: A Content Analysis Study

Background: Sedentary occupations frequently expose employees to prolonged periods with poor posture, which has been considered as the cause of musculoskeletal disorder. Objectives: The study set out to identify the related factors of a taking healthy sitting posture in office workers. Methods: This qualitative study aimed to use the theoretical domains framework (TDF) to investigate perceived determinants to taking a proper sitting posture in office workers. Semi-structured interviews with 25 office workers according to purposive sampling was conducted with a convenience sample of university office workers in Iran. Recorded interviews were transcribed into MAXQDA version 10. Directed content analysis and framework analysis were used for drawing the 12 domains of the TDF. Results: Explored themes were mapped onto the TDF domains, including skills, knowledge, behavioral regulation, goals, environmental context and resources, social influences, beliefs about capability, intentions, emotion, beliefs about consequences, memory, and attention and reinforcement. Conclusions: This study is a theoretical starting point in making structured interventions to change improper sitting posture among office workers. Also, the identified factors provide organizational managers with a wide list of factors by which they can encourage their employees to use proper postures in the workplace, leading to a significant reduction in job absenteeism and insurance fees associated with health problems. In addition, this study enriches the literature by providing additional empirical evidence for the TDF theory.

The Role of Yoga in Treating Stress-Related Symptoms in Dental Hygiene Students

Context:

Research has provided evidence for yoga's effectiveness in the prevention and treatment of pain and stress, both of which have been implicated as significant negative moderators of student performance and experience.

Aims:

This study investigated the feasibility and preliminary impact of a 10-week yoga intervention with dental hygiene students to reduce perceptions of stress and stress-related symptoms.

Settings and Design:

Students self-selected into a yoga treatment versus control condition. They completed stress and pain measures at four time points during and after the intervention or control period of 10-weeks.

Methods:

Participants were students enrolled in a dental hygiene program. All 77 participants completed a 10-week study, self-selecting into an intervention or control group. They completed three self-report questionnaires assessing pain and stress, administered at baseline, mid-point, postintervention, and two follow-ups. The 10-week yoga intervention consisted of 10 90-min yoga sessions that provided check-ins, breathing exercises, sequences of postures, relaxation exercises, and closing meditations.

Statistical Analysis Used:

Independent samples t-tests were used to compare perceived stress levels of participants in the control versus treatment groups. Paired t-test was used to assess differences in stress-related symptom levels across time.

Results:

Results suggested that a yoga intervention is feasible for this group and that active yoga practice can lower perceived stress across multiple domains and across time.

Conclusions:

A specially adapted and designed 10-week yoga protocol appears to be an accessible option for dental hygiene programs that seek to support their students in improving overall wellbeing.

Work-related musculoskeletal disorders amongst undergraduate nursing students at the University of Johannesburg

Background

Work-related musculoskeletal disorders (WRMSDs) present as pain or discomfort in the musculoskeletal system that individuals experience from work-related activities. Substantial research evidence exists on qualified nurses with WRMSDs, but there is a distinct lack of research regarding nursing students and their work environment in South Africa.

Aim

The primary aim of this study was to establish a baseline prevalence of musculoskeletal disorders (MSDs) amongst undergraduate nursing students. The secondary aim was to identify the role of certain occupational and biopsychosocial factors in the development of MSDs.

Setting

The University of Johannesburg, Health Sciences Faculty, Doornfontein Campus, Johannesburg, South Africa.

Method

A cross-sectional quantitative study conducted through a questionnaire (from 24 June to 29 July 2019) was initiated amongst the undergraduate nursing students at the University of Johannesburg, South Africa. All 250 undergraduate nursing students were given the opportunity to participate by completing the Nordic Musculoskeletal Questionnaire-Extended (NMQ-E). A total of 125 questionnaires were collected and used in the study. Data analysis consisted of frequencies, descriptives and custom tables. The Chi-square test for association was used to test the associations between variables.

Results

The study found an 83% prevalence of MSDs. Musculoskeletal disorders occurred most commonly in the lower back (81.1%), neck (65.9%) and shoulder (63.6%) regions. Factors that showed associations with overall MSDs were female gender (p = 0.002), height (p = 0.009) and studying at home (p = 0.040). Stress and tablet or smartphone use had significant associations with certain body regions.

Conclusion

The findings indicate a high prevalence of MSDs in undergraduate nursing students in this sample, substantially higher than in other similar studies in which lower back disorders were most prevalent.

Prevalence of self-reported musculoskeletal disorders of the hand and associated conducted therapy approaches among dentists and dental assistants in Germany

Background

Dental professionals are subjected to higher risks for musculoskeletal disorders (MSDs) than other professional groups, especially the hand region. This study aims to investigate the prevalence of hand complaints among dentists (Ds) and dental assistants (DAs) and examines applied therapies.

Methods

For this purpose, an online questionnaire analysed 389 Ds (240female/149male) and 406 DAs (401female/5male) working in Germany. The self-reported data of the two occupational groups were compared with regard to the topics examined. The questionnaire was based on the Nordic Questionnaire (self-reported lifetime, 12-month and 7-day MSDs prevalence of the hand, the conducted therapy and its success), additional occupational and sociodemographic questions as well as questions about specific medical conditions.

Results

30.8% of Ds affirmed MSDs in the hand at any time in their lives, 20.3% in the last twelve months and 9.5% in the last seven days. Among DAs, 42.6% reported a prevalence of MSDs in the hand at any time in their lives, 31.8% in the last 12 months and 15.3% in the last seven days. 37.5% of the Ds and 28.3% of the DAs stated that they had certain treatments. For both, Ds and DAs, physiotherapy was the most frequently chosen form of therapy. 89.7% of Ds and 63.3% of DAs who received therapy reported an improvement of MSDs.

Conclusion

Although the prevalence of MSDs on the hand is higher among DAs than among Ds, the use of therapeutic options and the success of therapy is lower for DAs compared to Ds.

Australian dental practitioner perspectives on academic careers

OBJECTIVES

Due to forecasted faculty shortages and increasing student enrollments in dental education, there is a need to attract talented clinicians into academia. To address this growing concern, we need to explore dental practitioners' perspectives on the academic career pathway, including enablers and barriers to entering the academic workforce.

METHODS

A mixed-methods electronic survey was disseminated through professional associations and dental groups on social media in 2018. Qualitative responses were examined using an inductive thematic analysis.

RESULTS

Participants (n = 85) considered an academic career highly regarded (80%) but indicated there was not a clear pathway (79%) and could not recall it being discussed during their dental studies (85%). It was perceived that experience, further study, and networks all played a significant role in forging an academic career. Perceived benefits to an academic career included professional development opportunities, good employment conditions, and making a meaningful contribution. Barriers included the geographical location of universities, losing clinical skills and the lack of a clear career pathway.

CONCLUSION

Despite being a highly regarded career, clinicians admit the career pathway to academia is not clear. Improving awareness of academic career paths might be achieved by educating dental students and providing accessible resources to the wider profession.

What are the effects of photographic self-assessment on students' risk for musculoskeletal disorders using Rapid Upper Limb Assessment

PURPOSES/OBJECTIVES

Musculoskeletal disorders (MSD) affect the careers of dental professionals. Research suggests symptoms of MSD begin during educational careers. This sequential explanatory study aimed to determine if dental hygiene students' self-assessment using the Rapid Upper Limb Assessment (RULA) tool reduced the risk of MSD development and explore students' experiences using a risk tool.

METHODS

Dental hygiene students (n = 21) in the last 2 of 4 sequential clinical semesters completed self-assessment using the RULA, employing photographs taken during patient care. Initial photographs were taken before students participated in a workshop about ergonomics and application of the RULA tool. Using a within-subjects repeated measures design, student risk scores were calculated for pre- and post-workshop photographs over 4 consecutive weeks. Students (n = 10) participated in a focus group to share their experiences with the risk tool.

RESULTS

Repeated measures one-way analysis of variance compared differences in student RULA scores between weeks. There was a statistically significant effect of time on student self-reported RULA scores, F(3, 60) = 7.04, P < .001. Emergent themes from the focus group were practice using RULA, video versus photographs, adjust tool for dental hygiene practice, increased self-awareness, and connect theory to practice.

CONCLUSIONS

Results suggested using self-assessment utilizing a risk tool increased self-awareness for ergonomics, thus reducing the risk of developing MSDs for dental hygiene students.

Prevalence of Musculoskeletal Disorders Symptoms among Czech Dental Students. Part 1: a Questionnaire Survey

Musculoskeletal disorders (MSDs) frequently occur among dentists and dental students. The first aim of this study was to gather and analyze information about the prevalence of symptoms of MSDs. The second aim was to determine a correlation between subjectively described complaints and the results of an objective examination of the spine using the Spinal Mouse® device; that part is described in the second section of this article. Dental students of the first, third and fifth years at Charles University, Faculty of Medicine in Hradec Králové were included. The participants filled out a questionnaire regarding the prevalence of symptoms of MSDs and the potential risk factors. From a total of 182 students that participated in this study, 71 reported musculoskeletal pain (prevalence 39%). The musculoskeletal pain was more frequent among women. During the studies its prevalence increased. The most frequent areas of pain were neck, lower back and upper back. The results indicate that musculoskeletal pain often begins and continues to develop throughout the dentistry studies.

Prevalence of Musculoskeletal Disorders and its Correlation to Physical Activity Among Health Specialty Students

Background:

Musculoskeletal disorders is defined as a musculoskeletal strain reported by an individual. Physical activity prevents many disabling diseases and musculoskeletal disorders. Low level of physical activity is associated with a higher prevalence of musculoskeletal disorders. In Saudi Arabia and among medical students, lowest rates of physical activity were found. Our aim is to assess the prevalence of musculoskeletal disorders and its correlation to physical activity.

Methods:

A cross-sectional study of 392 health specialty students in Taif University was carried out from January 1 to March 1, 2018, using a predesigned questionnaire, including demographic characteristics, an International Physical Activity Questionnaires–short form to assess the level of physical activity, and Standardized Nordic Questionnaires for the analysis of musculoskeletal symptoms.

Results:

Our study found that 64.8% of the students had musculoskeletal disorders. The highest prevalence was among medical students; 48.4% of them were having musculoskeletal disorders (P < 0.05). The most frequent region was the lower back (33.4%). There is a significant association between the musculoskeletal disorders and the level of physical activity, with 42.9% of the students with a moderate level of physical activity having musculoskeletal disorders (P < 0.05).

Conclusions:

The prevalence of musculoskeletal disorders is higher among medical than pharmacy and health science students. Most of the affected students were having a moderate level of physical activity. Psychosocial stress seems to be a major contributor to musculoskeletal disorders, rather than physical activity level.

Dental and oral health students' perceptions of loupes

Objectives. The dental industry has embraced the usage of loupes, with recent literature identifying numerous clinical and ergonomic benefits. Despite the growing usage of loupes among Australian dental professionals and dental students, few data regarding the perceived benefits and limitations of their use in clinical practice are available. The aim of this study was to examine the experiences and opinions of loupe usage among Australian dental and oral health students. Methods. A self-reporting questionnaire was distributed to all dental and oral health students across Australia during 2016. Results. A total of 223 students responded to the questionnaire. Of these responses, 45.7% reported they wear loupes during their clinical training, with the majority (32%) purchasing them due to recommendation by a demonstrator. Primary benefits reported included ergonomics/posture (89%), restoration evaluation/detection (72%) and quality of care/improved patient care (63%). Primary limitations reported included infection control (53%), decreased awareness of patients' non-verbal communications (44%) and vision dependency (30%). Conclusions. Overall, the students in this study identified both benefits and limitations to wearing loupes in clinical practice. Despite this, an overwhelming majority (96%) of those who used loupes would recommend them to other dental and/or oral health students.

Perception of dental students on risk factors of musculoskeletal disorders

OBJECTIVE

To evaluate the validity and reliability of the Job Factors Questionnaire, and the influence of gender, academic level and pain/discomfort on dental students' perception regarding risk factors of musculoskeletal disorders.

METHODS

One hundred forty-five dental students from Stony Brook School of Dental Medicine participated voluntarily in this study. The survey was organised in two sections: (i) Job Factors Questionnaire with 15 items that evaluated students' perceptions about job/study environmental risk factors and their potential contribution to musculoskeletal disorders. The tri-factorial structure (repetitiveness, work posture and external factors) was used; (ii) Part of the Nordic Questionnaire with questions referring to 9 body areas: Neck, shoulders, upper back, elbows, lower back, wrists/hands, hips, knees and ankles/feet. Students answered if they have had a job-related pain/discomfort in any of these body areas in the previous 12 months. The data were evaluated statistically by confirmatory factor analysis, convergent and discriminant validities, internal consistency and Z-test (α = .05).

RESULTS

The tri-factorial structure was considered valid and reliable for the sample after excluding item 8 and inserting correlations between items 11 and 12, and between 14 and 15. The academic level presented a significant effect on the factors "Work Posture" (P = .02) and "External Factors" (P = .01). Most of the students reported pain in their neck (73.79%), lower back (62.06%) and shoulders (53.10%) in the previous 12 months.

CONCLUSION

The Work Posture and External Factors were influenced only by academic level. The lower the students' academic level, the higher their perception for both factors of musculoskeletal disorders.