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Research of the effectiveness of different treatments and constructive materials in prosthodontic patients The loss of teeth and the related tissue lead to changes of stomatoghnatic system, such as movement of the remaining teeth, loss of periodont ligament, etc. The task of every prosthodontic therapy is to prevent any potentially negative consequences and to rehabilitate the patient. In this context it is essential to choose the best therapy for each individual, taking into account the selection of the best materials in terms of mechanical requirements and biocompatibility. Biocompatibility research of dental materials and their mechanical quality are, therefore, very important for both scientific and clinic interest. Interface of the cast in PFM, and core in all ceramic materials and vennered ceramics is an important factor with regard to durability of ceramic restorations. The affirmation to this is realised in the fact that stress emerges on the interfacial and not functional crown surface. Researching microstructure and surface quality in such double-layered prosthodontic appliances will contribute to better usage in everyday clinical practice, especially when dealing with very demanding patients, such as the ones with parafunctions. Modern life brings with it a higher dose of stress which is one of the important etiological factors causing parafunctions. Hence, the increase in patients with parafunctions is evident and the need for a quality and long termed prosthodontic therapy understandable. Honouring the wishes and stances has become essential in prosthodintics. Aesthetics of the appliance is often of great importance thus the usage of other constructive materials diminishes. Dental ceramics has become the material of choice so the research of, especially newer systems would contribute to their higher quality usage and bigger satisfaction of the patients. Reference to previous research Functional durability of prostodontic appliances is affected not only by the knowledge and skill of a dental surgeon and technician, but also by the proper choice of dental materials used to do the denture, response of the oral cavity tissue to the dental appliance. It is important to evaluate the effect of the surface of the appliance towards teeth or appliances in the opposite jaw, bone density, gingiva, occlusion, temporomandibular joints to prosthetic therapy. Previous researches have given significant results related to: the choice of material (Baučić, 2002.), researching tribological properties of constructive prothodontic materials (Mehulić, 2005., 2006.), researching the response of the oral cavity tissue to the appliance (Baučić, 2003., Mehulić, 2004., 2005.), preparing the cast surface for baking ceramics (Mehulić, 2007.), analysis of different cast surface preparations of feldspatic ceramics (Mehulić, 2008.). Therefore, it is very important to examine the mechanical properties of dental materials (strength, hardness, elasticity, ability to load), surface roughness. The three-dimensional appearance of the surface on a nanometer scale has been achieved using AFM. Although there have been many publications on the quality of materials and indications to use them, there are still a lot of uncertainties given the expansion of the dental industry and the amount of new ceramics emerging on the market. The research would clarify their usage and valuate their properties (Mehulić, 2008., 2009.). Expected benefits of cooperation in Croatia and beyond Many advantages are expected out of the above mentioned cooperation. The importance of various factors on which the success of prosthetic therapy is depended on would be analysed while particularly contemporary materials in prosthetics would be explored. In Slovenia, some techniques and methods are routinely applied (veneers, zirconium oxide posts) that are less frequently applied in Croatia, where the approaches more often lead to the classical prosthetic treatment. The Croatian-Slovenian cooperation, except for the transfer of the knowledge would lead to the mutual publication based on the joint results in relevant journals. The possibility of this joint project being the foundation to establishing broader cooperation on new projects within the EU stands.
Short description of the task performed by Croatian partner
The objectives of this project are to examine some newly developed dental materials and their properties. The aim is, also, to examine other factors responsible for the success of prosthetic therapy and their influence on oral health. In Croatia, it is possible, in cooperation with the IRB (Institute Rudjer Boskovic) to investigate three-dimensional nano-characteristics of the surface of contemporary dental materials (eg zirconium oxide) using AFM. Zirconium oxide posts have been patented in Slovenia, however, zirconium oxide has been used for making zirconium oxide ceramic fixed partial dentures, as well. It is possible to research other ceramic materials such as lithium disilicate ceramic as its place in the therapy of the patient is important. In Zagreb, at the Faculty of Mechanical Engineering tests could be performed on, respectively certain mechanical properties of materials and chemical stability. Therefore, some of the researches would be conducted in Croatia while others in Slovenia (Jozef Stefan Institute). Based on the obtained results proposing more precise indications for certain prosthetic works would be possible.
Ovo web sjedište koristi tehnologiju "kolačića" (eng. cookie) da bi se korisnicima prikazao dinamičan i personaliziran sadržaj, te su oni nužni za ispravan rad. Ako nastavite pregledavati ove stranice, kolačići će biti korišteni u suradnji s vašim preglednikom Weba.
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