Evaluación del comportamiento mecánico en molares superiores de las endocoronas fabricadas en diferentes materiales CAD-CAM. análisis de elementos finitos
| dc.contributor.advisor | Luna Angel, Luis Eduardo | |
| dc.contributor.advisor | Tamayo muñoz, Martha Cecilia | |
| dc.contributor.advisor | Rios Linares, Ricardo Augusto | |
| dc.contributor.author | Beltran Charpentier, Keinly Maythe | |
| dc.contributor.author | Castillo Sanchez, Julieth Marcela | |
| dc.contributor.author | Martinez Avila, Aryerith Daniela | |
| dc.date.accessioned | 2024-08-14T02:35:20Z | |
| dc.date.available | 2024-08-14T02:35:20Z | |
| dc.date.issued | 2024-07 | |
| dc.description.abstract | Los dientes tratados endodónticamente (DTE) tienden a ser más frágiles y propensos a fracturas debido a que con la realización de la cavidad de acceso y la preparación endodóntica, pierden colágeno, afectando las propiedades físicas y mecánicas de la dentina. Para la restauración conservadora de estos dientes se ha sugerido el uso de las endocoronas, que son restauraciones monobloque CAD-CAM que se retienen macro-mecánicamente en la parte interna de la cámara pulpar, micro-mecánicamente mediante unión adhesiva a la estructura dental remanente. Sin embargo, se ha observado que la altura de las paredes remanentes del diente y las características mecánicas de los diferentes materiales de restauración pueden afectar el comportamiento mecánico de estas restauraciones por lo que es muy importante su estudio. Objetivo: Examinar el comportamiento mecánico de un molar superior preparado con diferentes alturas de tejido dental remanente restaurado con endocoronas elaboradas en diferentes materiales CAD-CAM mediante el método de elementos finitos EF. Métodos: En este estudio experimental con modelo de simulación matemático por computador, se desarrollaron 8 modelos de EF de endocoronas sobre un molar superior con dos alturas DE remanente dentario; 1.5 y 2mm, fabricadas en cuatro materiales CAD-CAM: Disilicato de litio[LS2], cerámica híbrida [CH], bloques de resina compuesta [BRC] y polímero de alto rendimiento [PAR]. Los datos de características mecánicas de los materiales de- modulo elástico [ME] y Coeficiente de Poisson [CP]– fueron extraídos de fichas técnicas, de estudios experimentales in vitro y de experimentales de EF seleccionados a partir búsquedas sistematizadas de literatura. A partir de ellos se estructuraron las matrices con los datos con mayor moda los cuales fueron aplicados a los modelos de EF diagramados. En una segunda fase se realizó la diagramación y análisis de EF; el modelo de la estructura dental se obtuvo a partir de una tomografía axial de haz cónico del diente 26 tratado endodónticamente. Se diagramaron tres dibujos bidimensionales: 2 relacionados con la altura del remanente dental y el otro con diseño de la endocorona, los cuales se importaron en formato STL al programa ANSYS Workbench, donde se aplicó el modelo. Los resultados se evaluaron de manera cualitativa y cuantitativa mediante los parámetros de Von-Mises. Resultados: Con base en los resultados de búsqueda se establecieron los siguientes para datos de ME y CP para DL [ME=95.000-CP=0,21], para CH [ME=37.800-CP=0,24], para BRC [ME=10.300 -CP=0,3] y para PAR [ME=4.100-CP=0,3]. A partir de la búsqueda también se determinó que la magnitud de la fuerza aplicada de manera axial seria de 600N distribuida en los puntos simulados ABC. En la fase de diagramación se elaboró cada modelo con 1´589.550 nodos y 1´103.114 elementos tetraedros. Los resultados del análisis muestran que a nivel de esfuerzo los modelos de L2S fueron los que presentaron el mejor comportamiento mecánico para la endocorona tanta en altura de tejido remanente de 1.5 mm (Esfuerzo: 487,19 MPa) como para 2mm (Esfuerzo: 504,28 MPa). Y en cuanto a la mayor deformación se observó en el modelo de PAR también para las dos alturas de remante dentario; para 1.5 mm (Deformación 0,11558 mm/mm), y para 2 mm (Deformación 0,11463 mm/mm). Conclusiones: Dentro de los límites de este estudio se puede concluir que los materiales menos rígidos son los que ayudan a disipar las cargas axiales en el diente tratado endodónticamente por ende son los ideales para aumentar su longevidad. | |
| dc.description.abstractenglish | Endodontically treated teeth (ETT) tend to be more fragile and prone to fractures because, with the completion of the access cavity and endodontic preparation, they lose collagen, affecting the physical and mechanical properties of dentin. For the conservative restoration of these teeth, the use of endocrowns has been suggested, which are CAD-CAM monobloc restorations that are retained macro-mechanically in the internal part of the pulp chamber, micro-mechanically by means of adhesive bonding to the remaining tooth structure. However, it has been observed that the height of the remaining walls of the tooth and the mechanical characteristics of the different restorative materials can affect the mechanical behavior of these restorations, making their study very important. Aim: To examine the mechanical behavior of an upper molar prepared with different heights of remaining tooth tissue restored with endocrowns made of different CAD-CAM materials using the FE finite element method. Methods: In this experimental study with a mathematical computer simulation model, 8 FE models of endocrowns were developed on an upper molar with two tooth remnant heights, 1.5 and 2mm, made in four CAD-CAM materials: lithium disilicate [LS2], hybrid ceramic [HC], composite resin blocks [CRB] and high-performance polymer [HPP]. The data on the mechanical characteristics of the materials - elastic modulus [EM] and Poisson's Coefficient [PC] - were extracted from data sheets, in vitro experimental studies, and FE experiments selected from systematized literature searches. Based on these data, matrices were structured with the data with the highest mode, which were applied to the diagrammed FE models. In a second phase, the FE diagramming and analysis were carried out; the tooth structure model was obtained from a cone beam axial tomography of endodontically treated tooth 26. Three two-dimensional drawings were diagrammed: 2 related to the height of the dental remnant and the other to the endocrowns design, which were imported in STL format into the ANSYS Workbench program, where the model was applied. The results were evaluated qualitatively and quantitatively using the Von-Mises parameters. Results: Based on the search results, the following were established for EM and PC data for LS2 [EM=95,000-PC=0.21], for HC [EM=37,800-PC=0.24], for CBR [EM=10,300 -PC=0.3] and for HPP [EM=4,100-PC=0.3]. From the search, it was also determined that the magnitude of the axially applied force would be 600N distributed over the simulated points ABC. In the diagramming phase, each model was prepared with 1,589,550 nodes and 1,103,114 tetrahedron elements. The results of the analysis show that at stress level, the LS2 models were the ones that presented the best mechanical behavior for the endocrown both in the height of the remaining tissue of 1.5 mm (Stress: 487.19 MPa) and for 2 mm (Stress: 504.28 MPa). The highest deformation was observed in the HPP model also for the two tooth remnant heights: 1.5 mm (Deformation 0.11558 mm/mm) and 2 mm (Deformation 0.11463 mm/mm). Conclusions: Within the limits of this study, it can be concluded that the less rigid materials are the ones that help dissipate axial loads in the endodontically treated tooth and, hence, are the ideal ones to increase its longevity. | |
| dc.description.degreelevel | Especialización | spa |
| dc.description.degreename | Especialista en prostodoncia | spa |
| dc.description.sponsorship | Grupo de investigacion UNIECLO-Unidad de Epidemiologia Clinica Oral | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.instname | instname:Universidad El Bosque | spa |
| dc.identifier.reponame | reponame:Repositorio Institucional Universidad El Bosque | spa |
| dc.identifier.repourl | repourl:https://repositorio.unbosque.edu.co | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12495/12875 | |
| dc.language.iso | es | |
| dc.publisher.faculty | Facultad de Odontología | spa |
| dc.publisher.grantor | Universidad El Bosque | spa |
| dc.publisher.program | Especialización en prostodoncia | spa |
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| dc.rights.accessrights | info:eu-repo/semantics/openAccess | |
| dc.rights.local | Acceso abierto | spa |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.subject | Endocorona | |
| dc.subject | Biomecánica | |
| dc.subject | CAD-CAM | |
| dc.subject | Análisis de elementos finitos | |
| dc.subject | Molares superiores | |
| dc.subject.keywords | Endocrown | |
| dc.subject.keywords | Biomechanics | |
| dc.subject.keywords | CAD-CAM | |
| dc.subject.keywords | Finite Element Analysis | |
| dc.subject.keywords | Upper molars | |
| dc.subject.nlm | WU 500 | |
| dc.title | Evaluación del comportamiento mecánico en molares superiores de las endocoronas fabricadas en diferentes materiales CAD-CAM. análisis de elementos finitos | |
| dc.title.translated | Assessment of the mechanical behavior in upper molars of endocrowns made in different CAD-CAM materials. Finite element analysis | |
| dc.type.coar | https://purl.org/coar/resource_type/c_7a1f | |
| dc.type.coarversion | https://purl.org/coar/version/c_970fb48d4fbd8a85 | |
| dc.type.driver | info:eu-repo/semantics/bachelorThesis | |
| dc.type.hasversion | info:eu-repo/semantics/acceptedVersion | |
| dc.type.local | Tesis/Trabajo de grado - Monografía - Especialización | spa |
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