Effectiveness of Ergonomic Implementation on Working Postures in Denture Fabrication to Minimizing Musculoskeletal Disorder (MSDS) Complaints

The dental laboratory has 2 denture manufacturing labs called wet and dry laboratories. In the wet laboratory, workers are required to be in non-ergonomic positions such as standing for too long, which if left untreated for a long period, can potentially cause health problems such as musculoskeletal disorders (MSDs). The main cause of musculoskeletal disorders in Dental Laboratory X is also unknown, whether caused by work posture, lifting load, or internal factors of workers such as age and length of service. Evaluation of work posture in Dental Laboratory X must be carried out using the RULA and REBA assessment methods to identify jobs that have a high risk of musculoskeletal disorders. The results of the assessment are expected to be used as a basis for proposing changes in work posture through rearranging jobs to comply with ergonomic standards to avoid musculoskeletal disorders for workers in the future. This consideration aims to reveal the risk variables for musculoskeletal disorders in Dental Laboratory X so that appropriate preventive measures can be planned to improve the safety and well-being of specialists. This consideration can be in the form of quantitative considerations using the RULA and REBA strategies that aim to determine the condition of the moist lab worker pose. The results of RULA and REBA scores at five different workstations show that calculations using the RULA strategy at the casting, crushing, and wax coating workstations scored 3, and sun exposure and cleaning scored 4. The RULA scores obtained indicate the level of immediate risk so that changes in position may be important but do not change the overall body position.