1. Valentina Veselinović,
Republic of Srpska, Bosnia and Herzegovina
2. Aleksandra Grebenar, Medicinski fakultet Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina
3. Sanja Gnjato, University of Banja Luka, Medical Faculty,
Republic of Srpska, Bosnia and Herzegovina
4. Nataša Trtić,
Republic of Srpska, Bosnia and Herzegovina
5. Tatjana Tepić-Milinović, JZU Zavod za stomatologiju,
Republic of Srpska, Bosnia and Herzegovina
6. Saša Marin, Medicinski fakultet Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina
PEEK (polyetheretherketone) polymers filled with ceramic particles chart a new course in the development of biomaterials in implant prosthodontics. Conventional implant prosthodontics use titanium and its alloys as building materials. Modern aesthetic procedures have necessitated the introduction of ceramic materials as aesthetically acceptable materials. However, regardless of the good mechanic or aesthetic features of such materials, a major problem with respect to fixed dental implant reconstruction still remains – the problem of the loading or absorption of masticatory forces. Unlike the human tooth which has the periodontium that absorbs masticatory stress, pressure is transferred directly to the bone over rigidly adhered titanium or ceramic implant and restoration, without the possibility of absorption or compensation of excessive force.
The aforementioned problem triggered a new course of development in biomaterials in implant prosthodontics, namely, modified PEEK materials, the high performance polymers used to make implants and mobile and fixed restorations on them. Apart from high biocompatibility and ability to completely adhere to the human bone, these polymers have the mechanical characteristics very similar to those of the human bone – modulus of elasticity, torque and resistance to plastic deformation. Structures made of this material together with a human bone build a monoblock or a set of materials that behaves in the same manner under occlusal force. This prevents the occurrence of adverse stresses in the system itself, allows the absorption of masticatory forces and their adequate transfer to the peri-implant alveolar bone, which brings us significantly closer to the ideal strived for in the contemporary implant prosthodontics and contemporary dentistry in general – a true reproduction of a human tooth and its function. Apart from these features, the facts that modified PEEK polymers are not prone to plaque thanks to the compact structure of their materials and good polishing properties, are insoluble in oral liquids, do not react with other materials in the oral cavity, have a low allergenic potential and high aesthetic performances make them the future materials of choice in implant prosthodontics.
Ključne reči :
Tematska oblast:
SIMPOZIJUM B - Biomaterijali i nanomedicina
Datum:
15.07.2016.
Contemporary Materials 2016 - Savremeni Materijali
