Search for: [Abstract = "Results For the purpose of performing a detailed analysis of the variants of construction solutions for alar prosthesis, it was necessary to define a model reference framework, namely the volume of load on the periodontium of abutment teeth and load on the tissues of the mucous and bone base. Having defined the model reference framework, the analysis was performed of the loads on the periodontium of abutment teeth and load on the tissues of the mucous and bone base for various variants of the construction solutions of dentures, according to the models from A to F. The analysis of the model of single crowns with supports and cylindrical latches – model A. The analysis involved the axial crosssection of the 3D model composed of 6975 flat triangular and rectangular elements connected with 27340 nodes. The occlusal load on the mucous and bone base indicates increase in the centrifugal force value, whereas average load \(0.0668 MPa\) is about twice lower than the comparative load \(0.1317 MPa\) in the model reference framework. The occlusal load of premolars depends on their situation as compared to the edentulous area, and on average, for first premolars, amounts to 0.0762 MPa, which is twice less than the value in the model reference framework, while for second premolars the average load value is 0.1628 MPa. The analysis of load direction illustrated by comparison of sections AB and BC in particular abutment teeth indicates the predominance of the shifting direction towards the edentulous area. The analysis of the model of single crowns with supports and lateral clips – model B. The analysis involved the axial cross\-section of the 3D model composed of 6975 flat triangular and rectangular elements connected with 27340 nodes. The occlusal load on the mucous and bone base is varied, increasing in the centrifugal direction. Average values \(0.1469 MPa\) exceed the load in the model reference framework \(0.1317 MPa\). First premolars are not under load, while in second premolars the occlusal load is about twice lower than the model reference framework, with the predominance of values in section BC, which indicates the centrifugal direction of the force, towards the edentulous area. The analysis of the model of multi\-unit crowns with supports 8 and cylindrical latches – model C. The analysis involved the axial cross\-section of the 3D model composed of 6982 flat triangular and rectangular elements connected by 27368 nodes. The occlusal load on the mucous and bone base is even and has the value \(average – 0.0394 MPa\) that is three times lower than in the case of model reference framework \(average – 0.1317 MPa\). The occlusal load transferred on particular abutment teeth has similar values \(first premolars \- average\: 0.1438 MPa, second premolars \- average\: 0.1462 MPa\) and does not exceed the values obtained in the model reference framework \(average – 0.1784 MPa\). First premolars are under centripetal force, while second premolars \- under centrifugal force, which indicates that connection of two teeth with blocked crowns creates a certain type of functional connection, constituting a functional whole that behaves like one tooth, which means that blocked premolars are under even load. The analysis of the model of multi\-unit crowns with supports and lateral clips – model D. The analysis involved the axial crosssection of the 3D model composed of 7033 flat triangular and rectangular elements connected by 27512 nodes. The occlusal load on the mucous and bone base is uneven \(average – 0.1244 MPa\) and grows centrifugally to the value above the load in the model reference framework. Abutment teeth are under load below the value of the model reference framework \(average – 0.1784 MPa\). First premolars \(average – 0,0464 MPa\) are under an over three times lower load as compared to the model reference framework, while the load on second premolars \(average – 0.1371 MPa\) have values similar to the model reference framework."]

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