In this paper are highlighted the stresses that appear in the peri-implantation area through the forces induced by the masticatory process. The analysis consists of computer modeling of the dental implant and simulation of the load with a distributed force. It is considered a variable direction loading related to the axial insertion of the dental implant, thus simulating an important masticatory process. This type of load reveals stresses developed in the periimplantary bone area, the risk areas where the stresses can cause the appearance of hard tissue damage near the implant and its failure. Increases in stresses up to 159% in the ruminant type of chewing compared with the cutter type are highlighted. An aggravating factor that can lead to implant failure is bruxism that tangentially stresses the implant leading to the concentration of forces at the abutment-implant junction. Conclusions regarding the decrease of stresses at bone-implant junction with up to 23% by a corresponding increase of the implant diameter by 25% are also issued.

Nowadays, at work, many people spend more than half of their entire day working in a sitting position. Maintaining this position for a long period of time is a risk factor for health. The results of various studies have shown associations between maintaining a prolonged sitting position with morbidity due to chronic diseases, such as cardiovascular disease, diabetes, metabolic syndrome, obesity, etc. And, as we have already mentioned in the first part of this study, dental technicians are part of this category of staff, who carry out most of their specific activity, in a sitting position.

Professionals from different fields are exposed to myo-arto-kinetic disorders, among them those in the medical field with dental profile, respectively dentists, dental assistants and dental technicians. Given that specialists in the field of dentistry are exposed to musculoskeletal risk factors with cervical location, the purpose of this study is to provide data to contribute to an effective kinetic intervention strategy for professionals working in the field of dentistry.

Specifically, maintaining a prolonged sitting position is considered to be associated with an increased risk of musculoskeletal disorders in the back, neck, shoulders, arms, hands, hips, knees and legs. The purpose of this study is to generate data, which can be used to support decisions on improving the health of dental technicians, whose basic activity is carried out in a sitting position at the work table, in order to improve the quality of life. Implementation of ergonomic measures, in the area where professional activities directly affect the physical and mental health of the employee, is of great importance.

Sedentary behavior, both professional, occupational, leisure and recreational, is one of the major risk factors for cardio-metabolic health and premature mortality. But, this type of sedentary behavior can be found in many of the existing professional activities in 2021, among them being the professional activities with a medical profile in the field of dentistry: specific activities in the dentist’s office (and here we discuss about dentists and dental nurses) and activities specific in the dental laboratory (in this case, we are talking about dental technicians).