Musculoskeletal System DiseaseNCT06282653
Postural and Muscle Fatigue Analysis of Endodontic Residents
An observational study of Musculoskeletal System Disease and Position Sense Disorders, run by Universidad Europea de Madrid at 1 site in Spain.
Trial summary
Musculoskeletal disorders (MSDs) are a significant occupational health problem for dentists and have been linked to a decline in quality of life, often leading to stress-related illnesses and early retirement. Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Musculoskeletal System Disease, Position Sense Disorders, Symptoms and Signs
- How many people
- 10 participants
- Where
- 1 siteSpain
- Study dates
- 25 Mar 2025to 25 Mar 2025
- How long will I take part?
- 2 Years
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Study population: 1st and 2nd year students of the Master's Degree in Endodontics of the European University of Madrid (UEM), who have completed the two years of the annual teaching period of clinical practice during the years 2022/24.
Who may be able to join
- Students of the Master's Degree in Endodontics of the European University of Madrid (UEM), who have completed the two years of the annual teaching period of clinical practice.
Who cannot join
- Subjects previously diagnosed with a musculoskeletal disorder.
- Subjects who had suffered previous trauma affecting the musculoskeletal system.
- Pregnant women in their third trimester.
- Subjects who refused to participate.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Postural and Muscle Fatigue Analysis of Endodontic Residents: A Research Proposal
Musculoskeletal disorders (MSDs) are a significant occupational health problem for dentists and have been linked to a decline in quality of life, often leading to stress-related illnesses and early retirement. Poor posture, poor movement or imbalances in the neck or shoulders can lead to the three most common pain syndromes in dentistry. The objectives of this study were to evaluate the working position adopted during an endodontic procedure and to determine the perception of symptoms of musculoskeletal disorders in first and second year students of the Master in Advanced Endodontics at the European University of Madrid (UEM), using the standardised Nordic Kuorinka questionnaire supplemented by a form with socio-demographic variables. This study has a descriptive cross-sectional observational design and included 10 students selected by convenience sampling. A video camera was used to record the procedures from three different angles for a maximum of 5 minutes. The information was processed using Microsoft Excel spreadsheet software, and the video recordings were assessed using Rodgers' Muscular Fatigue Analysis (RMFA) and Rapid Upper Limb Assessment (RULA).
Read the detailed description
The unit of analysis for this study consisted of the first and second year students of the Master's in Endodontics programme at the European University of Madrid (UEM) who completed the two years of annual clinical practice during the years 2022/24. A total of 10 students were enrolled over the two years of training, treating 30 patients (3 patients per student) in the first year and another 30 patients in the second year (for a total of 22 months). A video camera was used to record the procedures from three different angles for a maximum of 5 minutes (two side views - right and left - and one frontal view) on different patients, following the National Institute for Occupational Safety and Health (NIOSH) Protocol for Video Recording for Job Analysis and Risk Assessment. The selected endodontic procedure focused exclusively on upper or lower first molars during the opening and ultrasonic search for the fourth canal in upper first molars or the search for the mesiobuccal canal in lower first molars. The standardised Nordic Kuorinka Musculoskeletal Symptom Perception Questionnaire was used as the measuring instrument. Questionnaire data were collected using a spreadsheet program (Microsoft Excel).
- Conditions
- Musculoskeletal System Disease, Position Sense Disorders, Symptoms and Signs, Postural; Defect, Endodontic Disease
- Keywords
- Endodontics, Musculoskeletal System, Ergonomics
- Medical subject headings
- Musculoskeletal Diseases, Somatosensory Disorders, Signs and Symptoms, Dental Pulp Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Group 1 | 1st Year Students | |
| Group 2 | 2nd year students |
What is being measured
The primary outcome is the main question the study is designed to answer.
Symptom Perception
The standardized Nordic Kuorinka Musculoskeletal Symptom Perception Questionnaire will be used as a measurement instrument. Data from the questionnaires will be compiled in a spreadsheet program (Microsoft Excel); measures of central tendency and dispersion will be calculated as well as tables and figures. Sociodemographic variables such as age, sex, grade, weight, height, symptoms of musculoskeletal disorders, body regions affected and times of symptom onset will be recorded.
Measured: January 2023 - July 2024
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Feb 2024
- Study start25 Mar 2025
- Primary completion25 Mar 2025
- Study completion25 Mar 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Musculoskeletal System DiseaseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Other
- Enrolment
- 10 participants (actual)
- Target duration
- 2 Years
Sponsor and investigators
- Lead sponsor
- Universidad Europea de Madrid
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Díaz-Flores García, Universidad Europea de Madrid
- Investigators
- Ruth Perez Alfayate, PHD, Study chair, Universidad Europea de Madrid
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06282653
- Sponsor's protocol ID
- Endo-ergonomics
- Status last verified
- Apr 2026
- First submitted
- 2 Feb 2024
- Last updated
- 29 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: The data obtained will be used for scientific publications.
Publications
Zarra T, Lambrianidis T. Musculoskeletal disorders amongst Greek endodontists: a national questionnaire survey. Int Endod J. 2014 Aug;47(8):791-801. doi: 10.1111/iej.12219. Epub 2014 Jan 11.
PubMed 24283200Hayes M, Cockrell D, Smith DR. A systematic review of musculoskeletal disorders among dental professionals. Int J Dent Hyg. 2009 Aug;7(3):159-65. doi: 10.1111/j.1601-5037.2009.00395.x.
PubMed 19659711McAtamney L, Nigel Corlett E. RULA: a survey method for the investigation of work-related upper limb disorders. Appl Ergon. 1993 Apr;24(2):91-9. doi: 10.1016/0003-6870(93)90080-s.
PubMed 15676903
Study at a glance
From the registry record, last updated by the sponsor on 29 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Postural and Muscle Fatigue Analysis of Endodontic Residents: A Research Proposal
- ClinicalTrials.gov ID
- NCT06282653
- Acronym / sponsor ID
- Endo-ergonomics
- Conditions
- Musculoskeletal System Disease, Position Sense Disorders, Symptoms and Signs, Postural; Defect, Endodontic Disease
- Keywords
- Endodontics, Musculoskeletal System, Ergonomics
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- Universidad Europea de MadridUniversity, hospital or other
- Study start
- 25 Mar 2025 (actual)
- Primary completion
- 25 Mar 2025 (actual)
- Study completion
- 25 Mar 2025 (actual)
- First posted
- 28 Feb 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Musculoskeletal disorders (MSDs) are a significant occupational health problem for dentists and have been linked to a decline in quality of life, often leading to stress-related illnesses and early retirement. Poor posture, poor movement or imbalances in the neck or shoulders can lead to the three most common pain syndromes in dentistry. The objectives of this study were to evaluate the working position adopted during an endodontic procedure and to determine the perception of symptoms of musculoskeletal disorders in first and second year students of the Master in Advanced Endodontics at the European University of Madrid (UEM), using the standardised Nordic Kuorinka questionnaire supplemented by a form with socio-demographic variables. This study has a descriptive cross-sectional observational design and included 10 students selected by convenience sampling. A video camera was used to record the procedures from three different angles for a maximum of 5 minutes. The information was processed using Microsoft Excel spreadsheet software, and the video recordings were assessed using Rodgers' Muscular Fatigue Analysis (RMFA) and Rapid Upper Limb Assessment (RULA).
Detailed description
The unit of analysis for this study consisted of the first and second year students of the Master's in Endodontics programme at the European University of Madrid (UEM) who completed the two years of annual clinical practice during the years 2022/24. A total of 10 students were enrolled over the two years of training, treating 30 patients (3 patients per student) in the first year and another 30 patients in the second year (for a total of 22 months). A video camera was used to record the procedures from three different angles for a maximum of 5 minutes (two side views - right and left - and one frontal view) on different patients, following the National Institute for Occupational Safety and Health (NIOSH) Protocol for Video Recording for Job Analysis and Risk Assessment. The selected endodontic procedure focused exclusively on upper or lower first molars during the opening and ultrasonic search for the fourth canal in upper first molars or the search for the mesiobuccal canal in lower first molars. The standardised Nordic Kuorinka Musculoskeletal Symptom Perception Questionnaire was used as the measuring instrument. Questionnaire data were collected using a spreadsheet program (Microsoft Excel).
Study design
- Observational model
- Case-control
- Time perspective
- Other
- Target follow-up
- 2 Years
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Group 1 | – | –1st Year Students |
| Group 2 | – | –2nd year students |
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
- Study population
- 1st and 2nd year students of the Master's Degree in Endodontics of the European University of Madrid (UEM), who have completed the two years of the annual teaching period of clinical practice during the years 2022/24.
Key inclusion criteria (1 listed)
- Students of the Master's Degree in Endodontics of the European University of Madrid (UEM), who have completed the two years of the annual teaching period of clinical practice.
Key exclusion criteria (4 listed)
- Subjects previously diagnosed with a musculoskeletal disorder.
- Subjects who had suffered previous trauma affecting the musculoskeletal system.
- Pregnant women in their third trimester.
- Subjects who refused to participate.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Symptom Perception
Time frame: January 2023 - July 2024
The standardized Nordic Kuorinka Musculoskeletal Symptom Perception Questionnaire will be used as a measurement instrument. Data from the questionnaires will be compiled in a spreadsheet program (Microsoft Excel); measures of central tendency and dispersion will be calculated as well as tables and figures. Sociodemographic variables such as age, sex, grade, weight, height, symptoms of musculoskeletal disorders, body regions affected and times of symptom onset will be recorded.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Apr 2026.
- Results publication: PubMed 24283200Zarra T, Lambrianidis T. Musculoskeletal disorders amongst Greek endodontists: a national questionnaire survey. Int Endod J. 2014 Aug;47(8):791-801. doi: 10.1111/iej.12219. Epub 2014 Jan 11.
- Results publication: PubMed 19659711Hayes M, Cockrell D, Smith DR. A systematic review of musculoskeletal disorders among dental professionals. Int J Dent Hyg. 2009 Aug;7(3):159-65. doi: 10.1111/j.1601-5037.2009.00395.x.
- Results publication: PubMed 15676903McAtamney L, Nigel Corlett E. RULA: a survey method for the investigation of work-related upper limb disorders. Appl Ergon. 1993 Apr;24(2):91-9. doi: 10.1016/0003-6870(93)90080-s.
- Individual participant dataSharing planned: No. The data obtained will be used for scientific publications.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ruth Perez Alfayate, PHD study chair
Universidad Europea de Madrid
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Musculoskeletal System Disease and Position Sense Disorders, run by Universidad Europea de Madrid at 1 site in Spain.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Spain. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Symptom Perception (time frame: January 2023 - July 2024). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06282653, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Apr 2026.