20.500.12556/DKUM-52397 Stress analysis of a unilateral complex partial denture using the finite-element method Napetostna analiza unilateralno kompleksne zobne proteze z uporabo metode končnih elementov Different types of dental restorations are used in the treatment of a unilateral, free-end saddle. A unilateral, complex, partial denture is one of the indications for this case of partial edentulousness. Consequently, the aim of this study was to stress test the unilateral complex partial denture model and its parts, under load, when changing the length of the free-end saddle. The stress distribution in canines and the first premolar, as the retention teeth, was examined under the influence of physiological and excessive occlusal forces by moving the point of attack in a distal direction. CATIA software was used for the creation of the 3D, fixed restoration unit model, in real size, with the appropriate supporting structures (canine and first premolar with present crowns, alveola, periodontal space) that are connected by the SD snap-in-latch attachment to the mobile portion of a partial denture. The mobile portion consists of an acrylate-coated metal base with three teeth (second premolar, first and second molars). The stress analysis, using the finite-element method, was performed under the application of physiological loads of 25 N, 50 N, 75 N and 100 N, and excessive loads of 300 N, 500 N and 700 N in the second premolar region, as well as in the first and second molar region. The results of the analysis showed that the largest amount of load under the application of physiological occlusal forces is positioned on the abutment teeth. Excessive forces are borne by the attachment. The stress analysis, performed on the unilateral complex partial denture model, suggested that the obtained stress values are lower than the limit values at which the plastic deformationin the model occurs. Različne vrste popravil zob so v uporabi pri obdelavi enostransko prostega sedla. Enostransko kompleksna delna proteza je ena od indikacij za primer delne edentuloze. Zato je bil namen te študije napetostni preizkus enostransko kompleksnega modela dela proteze in njenih delov pri napetosti pri spremembi dolžine sedla s prostim koncem. Porazdelitev napetosti v podočnjakih in v prvem premolarnem kot retencijskem zobu je bila raziskana pri vplivu fizioloških in prevelikih sil ugriza pri premiku točke napada v distalni smeri. Softver CATIA je bil uporabljen za pripravo 3D fiksnega modela obnove pri pravi velikosti z ustrezno podporno strukturo (podočnjaki in prvi premolarni zob s krono, dlesnijo in peridontalnim prostorom), ki so povezani z vezjo SD snap-in-latch k mobilnemu delu partialne proteze. Ta del je iz kovinske podlage pokrite z akrilatom s tremi zobmi (drugi premolarni, prvi in drugi molarni). Napetostna analiza je bila pripravljena z obojim, fiziološkimi silami 25N, 50N, 75 N in 100 N ter s prevelikimi silami 300 N, 500 N in 700 N v drugem premolarnem ter v prvem in v drugem molarnem delu. Rezultati analize kažejo, da je največja obremenitev zaradi fizioloških ugriznih sil na opornem zobu, prevelike sile pa prenašajo pritrditve. Napetostna analiza je pokazala, da so izračunane napetosti nižje od limitnih vrednosti, pri katerih nastane plastična deformacija modela. enostransko kompleksna proteza pritrditev SD snap-in-latch fiziološka obremenitev prevelika obremenitev zobotehnika unilateral complex partial denture SD snap-in-latch attachment physiological load excessive load dentistry true false true Angleški jezik Slovenski jezik Znanstveno delo 2015-07-10 17:33:55 2015-07-10 17:33:55 2022-06-01 03:06:10 2021-05-10 03:18:13 2010 0 0 str. 41-47 št. 1 Letn. 44 2010 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 616.31:539.3:519.8 106193664 13865750 1580-2949 URN:SI:UM:DK:5XU2XWF3 Materiali_in_tehnologije_2010_Todorovi_et_al._Stress_Analysis_of_a_Unilateral_Complex_Partial_Denture_Using_the_Finite-Element_Method.pdf Materiali_in_tehnologije_2010_Todorovi_et_al._Stress_Analysis_of_a_Unilateral_Complex_Partial_Denture_Using_the_Finite-Element_Method.pdf 1 891B8738FFBBCB52F29A8AFE9BB54C76 e62351370b5af5d9fa4b93b8665a02857558e3a3be40a7beb902d3b506e3a07d 00ac6e5d-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=109988 http://mit.imt.si/Revija/izvodi/mit101/todorovic.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=109987 Fakulteta za strojništvo 0 0 0