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Varna Medical Forum

Combined Partial Dental Prosthesis With Telescopic Attachment

Svetlana Angelova, Maksim Simov, Alexandar Lakov, Margarita Nikodimova, Heli Kuuse, Minko Milev

Abstract

Telescopic crowns are used not only in complex bridge prostheses but also in combined prosthetic constructions. It is thought that telescopic crowns were first described by Pesso in 1924. They are always manufactured individually with the help of a milling machine unlike other special fixing and stabilizing apparatuses, which are standard. Abutment teeth can be with short or long crowns, vital or depulped. However, they must have undergone thorough treatment and to be without any periapical changes and have periodontium with preserved reserve strength. The two-part telescopic crown can be considered a special form of slide attachment: the inner (primary) telescope is the patrix, which completely covers the prepared load-bearing tooth and is cemented to it. The matrix (the outer or secondary telescope) is fixed in the prosthetic body. Mounted one into the other, the inner and outer crown are locked tightly together and completely carry out the three main functions - retention, support, and blockage. They only allow one type of freedom of movement - in the direction of placement and removal of the prosthesis. In standard laboratory setting, it is not possible to achieve the needed accuracy for tightly fitting along the walls and achieving precise parallelism between them, especially in cases of multiple and complex profile details. This is the reason for the creation of a specialized technological method called milling technique. The aim of the current article is to examine three clinical cases related to dental prosthetics using partial combined prostheses over telescopes. In both of those cases, the telescopic crowns are created over prepared own teeth, and the third one is a combination between telescopes over dental implants and own teeth. The combined constructions fixed over telescopic crowns transmit the mastication pressure axially. They are beneficial from a preventive point of view because they protect the dental tissue and the marginal periodontium from damages. However, improper planning carries the risk of overloading the abutment teeth.


Keywords

combined construction, telescopic crowns, milling technique, implants, mastication pressure

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References

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DOI: http://dx.doi.org/10.14748/vmf.v7i0.5967

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