| Abstract [eng] |
This research project aims to determine the impact of dental orthopedic and(or) dental technician errors on dental implant overloading. Proper assessment of errors can help to make decisions that extend the life of implants and improve the quality of life of patients. The study addresses the factors that influence the mechanical performance of dental implant systems under functional loads, including implant positional accuracy and assembly features. A literature review is carried out which discusses the basic functions of teeth, the causes and possible consequences of tooth loss, as well as the process of osseointegration and its importance in implantology, traditional and digital oral impressions, denture bonding and denture fabrication. The causes and consequences of overloading of dental implants, dental orthopedic and dental technician errors in implantology are examined. Geometric modelling and finite element analysis were carried out using models of the implant system and the three-tooth bridge in „SolidWorks“ software environment. The geometry of the components of the implant system was reconstructed on the basis of physical measurements, as the files provided by the manufacturer were not suitable for finite element analysis. Five different dental bridge configurations were created to analyze the effect of different implant insertion angles along the jaw on the stress distribution. The materials for the components of the implant system are assigned according to the manufacturer's data: titanium for the implants and abutments, zirconium oxide for the three-tooth bridge, for which the properties of the material were obtained from data provided by dentists. The boundary conditions and constraints were chosen to simulate real clinical conditions: the implants were assigned a fixed constraint, simulating strong osseointegration with the surrounding bone, the contact between the bridge and abutments was selected as „bonded“, simulating an adhesive layer and the bridge was subjected to loading conditions simulating masticatory forces, with the assignment of locations, values and angles of tilt chosen in accordance with the recommendations of dentist. The obtained results show the importance of precise implantation and prosthetics, as even small deviations can lead to disproportionate stresses, increasing the risk of structural failure. The submitted conclusions are that errors by the dental orthopedic surgeon and/or dental technician can lead to an inappropriate distribution of loads, causing premature wear of components, loosening of fixing screws or even fracture of components. |
