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IRCT20251223068421N1 IRCT 2026-04-26 Hamedan University of Medical Sciences Ergonomics and Stretching Training for Dentists’ Musculoskeletal Pain Effectiveness of Ergonomic Principles Training and Workplace Stretching Exercises on Reducing Upper Limb Musculoskeletal Disorders in Dentists 2026-01-21 anticipated 19 Complete https://irct.ir/trial/88501 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Education/Guidance, Other design features: A quasi-experimental pretest–posttest study on 19 dentists. Upper-extremity musculoskeletal disability will be assessed using the QuickDASH questionnaire. Ergonomics and workplace stretching trainings will be delivered via educational contents and videos on online platforms. N/A Upper limb work-related musculoskeletal disorders in dentists. Intervention group: The level of upper limb disability among participants who meet the study’s inclusion criteria will be measured using the DASH (Disabilities of the Arm, Shoulder, and Hand) instrument. Subsequently, participants will undergo a "two‑month ergonomics educational intervention" comprised of the following components: Part I – Classroom‑based Instruction Based on scientific content and published research articles, two virtual training sessions will be held on the Skyroom platform during the fourth and sixth weeks of the intervention. 1) First session (approximately one hour): This session will address ergonomic risk factors such as improper posture, prolonged working hours, repetitive movements, vibration, and unsuitable hand tools in clinical environments. The aim is to ensure that dentists become familiar with the causes of musculoskeletal disorders and are able to recognize them effectively in their workplaces. 2) Second session (approximately one hour): This session will focus on strategies for mitigating the identified ergonomic risk factors. Participants will be introduced to appropriate workstation designs, healthy behavioral habits, ergonomic hand tools, and related topics. They will be expected to select and implement suitable solutions according to the risk factors identified in their own work settings.Part II – Social network‑based TrainingDrawing upon scientific sources and published articles, appropriate stretching and exercise movements to relieve tension caused by static and improper postures will be developed—movements that can be performed within the dental work environment. Using artificial intelligence tools, the content will be prepared as illustrative pictorial messages with detailed explanations. To achieve this goal, 16 educational posters will be designed, each containing clear and motivational explanations including a full description of the movement, targeted body region, recommended daily frequency, and repetitions per session. These posters will be delivered to participants via online platforms. Participants will be instructed to include these exercises in their daily routines and perform them at least three times during each work shift. Furthermore, they will be asked to notify the researcher through a reaction whenever they perform the instructed movements.By the end of the eighth week, participants are expected to be familiar with and able to correctly perform all 16 stretching exercises related to upper limb and neck discomfort.At the conclusion of the two‑month intervention, the dental practitioners’ upper limb disability levels will be reassessed using the DASH to evaluate the effectiveness of the designed educational intervention.. Yes - There is a plan to make this available What will be shared: De identified individual participant data including baseline demographic variables and the shortened Disabilities of the Arm, Shoulder and Hand questionnaire scores at baseline and after completion of the 2 month training period; along with the data dictionary and the study protocol When: Access will start 6 months after publication of the main results and will remain available for 5 years To whom: Researchers from universities and scientific centers who has specific scientific aims Conditions: Use is permitted only for scientific purposes such as meta analysis, systematic reviews, and secondary analyses related to the study objectives; only de identified data will be shared; requestors must sign a data use agreement, agree not to attempt re identification, not to share data with third parties, and to cite the trial registration in any resulting publications Where to obtain: Requests should be sent to the principal investigator: Ali Moradi, email Ali.moradi206@gmail.com , mobile 0098 9359385871 How to obtain: Requestors submit a written application including the proposed project title, objectives, analysis plan, and institutional details; the research team reviews the request; if approved, a data use agreement is signed and the de identified dataset, data dictionary, and protocol are provided electronically Comments: The informed consent form will not be publicly shared due to confidentiality and research ethics considerations
public Ali Moradi
Faculty of Dentistry, Hamadan University of Medical Sciences, Shahid Fahmideh Boulevard, Pajouhesh Crossroad, Hamadan, Iran
Hamadan Iran (Islamic Republic of) 6517838843 +98 935 938 5871 Ali.moradi206@gmail.com Hamedan University of Medical Sciences scientific Ali Moradi
Faculty of Dentistry, Hamadan University of Medical Sciences, Shahid Fahmideh Boulevard, Pajouhesh Crossroad, Hamadan, Iran
Hamadan Iran (Islamic Republic of) 6517838678 +98 935 938 5871 Ali.moradi206@gmail.com Hamedan University of Medical Sciences Iran (Islamic Republic of) At least 1 year of work experience (one year after completing mandatory service) Being a dentist Age 27 to 65 years 27 years 65 years Both Unwillingness to participate in the study M79.1 Myalgia Behavior Intervention group: The level of upper limb disability among participants who meet the study’s inclusion criteria will be measured using the DASH (Disabilities of the Arm, Shoulder, and Hand) instrument. Subsequently, participants will undergo a "two‑month ergonomics educational intervention" comprised of the following components: Part I – Classroom‑based Instruction Based on scientific content and published research articles, two virtual training sessions will be held on the Skyroom platform during the fourth and sixth weeks of the intervention. 1) First session (approximately one hour): This session will address ergonomic risk factors such as improper posture, prolonged working hours, repetitive movements, vibration, and unsuitable hand tools in clinical environments. The aim is to ensure that dentists become familiar with the causes of musculoskeletal disorders and are able to recognize them effectively in their workplaces. 2) Second session (approximately one hour): This session will focus on strategies for mitigating the identified ergonomic risk factors. Participants will be introduced to appropriate workstation designs, healthy behavioral habits, ergonomic hand tools, and related topics. They will be expected to select and implement suitable solutions according to the risk factors identified in their own work settings.Part II – Social network‑based TrainingDrawing upon scientific sources and published articles, appropriate stretching and exercise movements to relieve tension caused by static and improper postures will be developed—movements that can be performed within the dental work environment. Using artificial intelligence tools, the content will be prepared as illustrative pictorial messages with detailed explanations. To achieve this goal, 16 educational posters will be designed, each containing clear and motivational explanations including a full description of the movement, targeted body region, recommended daily frequency, and repetitions per session. These posters will be delivered to participants via online platforms. Participants will be instructed to include these exercises in their daily routines and perform them at least three times during each work shift. Furthermore, they will be asked to notify the researcher through a reaction whenever they perform the instructed movements.By the end of the eighth week, participants are expected to be familiar with and able to correctly perform all 16 stretching exercises related to upper limb and neck discomfort.At the conclusion of the two‑month intervention, the dental practitioners’ upper limb disability levels will be reassessed using the DASH to evaluate the effectiveness of the designed educational intervention. Total score of the shortened Disabilities of the Arm, Shoulder and Hand questionnaire (range 0 to 100; higher scores indicate greater functional disability). Timepoint: At baseline (before training) and 2 months after training. Method of measurement: the shortened Disabilities of the Arm, Shoulder and Hand questionnaire. Subscale score for upper extremity symptoms and function in the shortened Disabilities of the Arm, Shoulder and Hand questionnaire. Timepoint: At baseline (before training) and after completion of the 2-month training period. Method of measurement: the shortened Disabilities of the Arm, Shoulder and Hand questionnaire and the subscale score was calculated. Hamedan University of Medical Sciences Approved 2025-09-20 Ethics committee of Hamadan University of Medical Sciences Hamadan University of Medical Sciences, Shahid Fahmideh St, Hamadan Hamadan Hamadan Iran (Islamic Republic of)