The study of the stress-strain state of the dental ceramic implants depending on their shape and bone mineralization degree

The article deals with the models of dental implants of cylindrical, conical, cylindrical reverse-conical and conical reverse-conical shape, installed in the central part of the maxilla. The maxilla model is made in accordance with the sizes of the three-dimensional tomographic image of the patient's maxilla. The stress-strain state of the cortical and cancellous bones, depending on the shape of the implant, as well as the degree of bone mineralization is investigated. The isotropic model of bone material at normal and critical degree of bone mineralization, which depends on the patient's age, is considered. According to the results of the study, the use of the reverse-conical shape of implants significantly reduces stress not only in the cancellous bone, but also in the cortical bone, as well as in the implant during critical bone mineralization.