AbstractThe objective of the research was to evaluate the clinical effectiveness of using aesthetic fixed prosthetic appliances with combined occlusal surface.Materials and methods. The study included 30 patients who were divided into 2 groups: Group I included 20 patients with combined occlusal surface of the crowns; Group II included 22 patients with ceramic occlusal surface of the crowns. The patients were observed 3, 6 and 12 months after prosthetic repair.Results. 6 months after prosthetic repair, the occlusal contact surface area in Group I increased by 0.79%, while in Group II, it increased by 1.4%.12 months after prosthetic repair, the occlusal contact surface area in Group I and Group II increased by 2.37% and 5%, respectively.The aforementioned data indicated that the occlusal contact surface area increased as the period of ceramic fixed prosthetic appliance wearing increased.When combining the occlusal surface in dental prostheses, the occlusal contact surface area increased approximately 2 times slower. The study demonstrated convincingly that crowns burnt on a zirconium dioxide frame were a better choice as compared to cast framework made of nickel-cobalt-chrome alloy. In case of cast frameworks, the indicators of crown margin discrepancy were worse than in case of milled frameworks - 15% versus 5%, respectively. In addition, one cast framework crown (5%) in Group II was remodeled and one crown (5%) was recemented.Conclusions. Aesthetic fixed prosthetic appliances with combined occlusal surface demonstrated high functional and aesthetic characteristics. The use of the USHPS system showed a decisive advantage of milled frameworks and combined occlusal surface over traditional cast ceramic frameworks.The combination of high mechanical, strength and tribological properties of zirconium dioxide and high biological as well as aesthetic properties of ceramic materials helped reveal high clinical characteristics of aesthetic appliances with combined occlusal surface.
Bida BI. Pryntsypy ortopedychnoho likuvannia patolohii zuboshchelepnoii systemy pry znyzhenni vysoty prykusu, yoho prohnozuvannia ta profilaktyka: avtoref. dys. na zdobuttia nauk. stupenia d-ra med. nauk: spets. 14.01.22. "Stomatolohiia". Kyiv. 2003, 31p.
Evstratov OV, et al. State of the fixed prosthesis and the surrounding gums supporting the teeth and implants in the presence of prostheses milled metal and metal-free frames. Kubanskiy nauchnyy meditsinskiy vestnik. 2013;6(141) [published in Russian]
Hasiuk PA, Rosolovska SO, Hrad AO. Bezmetaleva keramika na osnovi oksydu tsyrkoniiu yak priorytet neznimnoho protezuvannia v ortopedychnii stomatolohii. Innovatsiini tekhnolohii v stomatolohii. 2013;3-4:–23
Mitin NE, Nabatchikova LP, Vasilyeva TA. The analysis of contemporary methods of occlusion estimation and registration on the stage of orthopedic dentistry treatment. Ros. mediko-biol. vestn. im. akad. IP Pavlova. 2015;3:134–139
Yang X, Sun YF, Tian L, et al. Precision of digital impressions with TRIOS under simulated intraoral impression taking conditions. Beijing Da Xue Xue Bao. 2015;47(1):85–89. [PMid: 25686335]
Bragareva NV. Metody kontrolya pri vosstanovlenii okklyuzii na ortopedicheskom prieme. Problemy stomatologii. 2013;5:45–49
Shaymieva NI, et al. Dynamics of quality of metal-ceramic dentures on implants when using milled and moulded frames. Rossiiskiy stomatologicheskiy zhurnal. 2012;6:
Morena R, Beaudreau GM, Lockwood PE, et al. Fatigue of dental ceramics in a simulated oral environment. Journal of dental research. 1986;65(7):993–997. DOI: http://doi.org/10.1177/00220345860650071901
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.