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Varna Medical Forum

The use of the conventional impression methods for the manufacture of a fixed denture construction

Svetlana Angelova, Maksim Simov, Ivan Tsonev, Anita Proytscheva, Darina Atanasova


An impression is a negative copy not only of the teeth which are undergoing prosthetic procedures, but also of the adjoining soft and hard tissues. Its main function is to transfer the clinical information to the positive working model. Depending on whether digital equipment is used when taking an impression of the prosthetic field and/or when creating the denture construction, the impression methods are classified as conventional or digital. Each clinical case is different, therefore an individual approach is needed when deciding on a solution to each specific clinical situation. The doctor of dental medicine is the medical specialist who makes the clinical decision and the rest of the team - the dental technician, the dental assistant, and the patient cooperate in the process of achieving the desired results. The aim of the current paper is to observe the conventional and laboratory stages in the manufacture of a fixed denture construction, and to offer an algorithm for their optimal function. In order to do this, all stages were carried out. The ones related to the laboratory part were photographed and the time needed for their completion was recorded. We can summarize that, when following the clinical and laboratory protocol and taking into consideration the specificity of the clinical case, optimal results can be achieved. The convenience of manufacturing a denture construction on a working model and not directly into the mouth of the patient has its disadvantages: much longer time, higher amount of materials (impression, modelling, casting), and various volume changes leading to undesired accuracy deviations. These and a number of other factors lead to the use of optical scanning methods in the prosthetic dental medicine and in the field of dental technology.


impression methods, denture construction, clinical protocol, laboratory protocol, algorithm

Full Text


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