Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior
The restoration of class II cavities is predominantly carried out with composite materials. Due to the high failure rate in restoring this type of cavity, composite materials with much-improved properties and new application techniques have been promoted. The study aimed to analyze the mechanical be...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Journal of Functional Biomaterials |
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| Online Access: | https://www.mdpi.com/2079-4983/14/7/354 |
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| author | Mihaela Jana Țuculină Adela Nicoleta Staicu Maria Cristina Munteanu Cristian Niky Cumpătă Bogdan Dimitriu Ana Maria Rîcă Maria Cristina Beznă Dragoș Laurențiu Popa Alexandru Dan Popescu Tiberiu Țîrcă |
| author_facet | Mihaela Jana Țuculină Adela Nicoleta Staicu Maria Cristina Munteanu Cristian Niky Cumpătă Bogdan Dimitriu Ana Maria Rîcă Maria Cristina Beznă Dragoș Laurențiu Popa Alexandru Dan Popescu Tiberiu Țîrcă |
| author_sort | Mihaela Jana Țuculină |
| collection | DOAJ |
| description | The restoration of class II cavities is predominantly carried out with composite materials. Due to the high failure rate in restoring this type of cavity, composite materials with much-improved properties and new application techniques have been promoted. The study aimed to analyze the mechanical behavior of several topical composite materials (nanocomposites, nanohybrids and ormocer) using different application techniques. In a lower second molar, a class II occlusal cavity was prepared. As filling materials, we used the following combinations: Admira Fusion and Admira Fusion Flow, Grandio and Grandio Flow, Filtek Supreme XT and Filtek Supreme Flow. These were applied using a snow plow, injection molded and Bichacho techniques. Three-dimensional scanning of the molar with the prepared cavity was performed, and then scanning of each layer of added composite material was performed, obtaining three-dimensional models. The virtual molar models were analyzed with software specific to the finite element analysis method, where their physical-mechanical properties were entered and assigned to the components of the virtual molar. Simulations at high forces specific to bruxism were then carried out and analyzed, and compared. The values of displacements and strain, for all six analyzed situations, are relatively small (range from 5.25 × 10<sup>−6</sup>–3.21 × 10<sup>−5</sup> for displacement, 6.22 × 10<sup>−3</sup>–4.34 × 10<sup>−3</sup> for strain), which validates all three methods and the materials used. As far as the stress values are concerned, they are similar for all methods (250–300 MPa), except for the snow plow and injection-molded techniques using Grandio and Grandio Flow composites, where the maximum von Mises stress value was more than double (approximately 700 MPa). When using the combination of Grandio and Grandio Flow materials, the 1 mm thickness of the fluid composite layer was found to have a major influence on occlusal forces damping as opposed to 0.5 mm. Therefore, the Bichacho technique is indicated at the expense of the snow plow and injection-molded techniques. The composite materials used by us in this study are state-of-the-art, with clear indications for restoring cavities resulting from the treatment of carious lesions. However, their association and application technique in the case of Class II cavities is of clinical importance for resistance to masticatory forces. |
| first_indexed | 2024-03-11T00:56:54Z |
| format | Article |
| id | doaj.art-9785b66f53114cad9bf076d3b15c6fd8 |
| institution | Directory Open Access Journal |
| issn | 2079-4983 |
| language | English |
| last_indexed | 2024-03-11T00:56:54Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Biomaterials |
| spelling | doaj.art-9785b66f53114cad9bf076d3b15c6fd82023-11-18T19:56:16ZengMDPI AGJournal of Functional Biomaterials2079-49832023-07-0114735410.3390/jfb14070354Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical BehaviorMihaela Jana Țuculină0Adela Nicoleta Staicu1Maria Cristina Munteanu2Cristian Niky Cumpătă3Bogdan Dimitriu4Ana Maria Rîcă5Maria Cristina Beznă6Dragoș Laurențiu Popa7Alexandru Dan Popescu8Tiberiu Țîrcă9Department of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaDepartment of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaDepartment of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaFaculty of Dental Medicine, University Titu Maiorescu of Bucharest, 67A Gheorghe Petrascu Str., 031593 Bucharest, RomaniaDepartment of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 Bucharest, RomaniaDepartment of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaDepartment of Pathophysiology, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaDepartment of Automotive, Transportation and Industrial Engineering, Faculty of Mechanics, University of Craiova, 200478 Craiova, RomaniaDepartment of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaDepartment of Oro-Dental Prevention, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, RomaniaThe restoration of class II cavities is predominantly carried out with composite materials. Due to the high failure rate in restoring this type of cavity, composite materials with much-improved properties and new application techniques have been promoted. The study aimed to analyze the mechanical behavior of several topical composite materials (nanocomposites, nanohybrids and ormocer) using different application techniques. In a lower second molar, a class II occlusal cavity was prepared. As filling materials, we used the following combinations: Admira Fusion and Admira Fusion Flow, Grandio and Grandio Flow, Filtek Supreme XT and Filtek Supreme Flow. These were applied using a snow plow, injection molded and Bichacho techniques. Three-dimensional scanning of the molar with the prepared cavity was performed, and then scanning of each layer of added composite material was performed, obtaining three-dimensional models. The virtual molar models were analyzed with software specific to the finite element analysis method, where their physical-mechanical properties were entered and assigned to the components of the virtual molar. Simulations at high forces specific to bruxism were then carried out and analyzed, and compared. The values of displacements and strain, for all six analyzed situations, are relatively small (range from 5.25 × 10<sup>−6</sup>–3.21 × 10<sup>−5</sup> for displacement, 6.22 × 10<sup>−3</sup>–4.34 × 10<sup>−3</sup> for strain), which validates all three methods and the materials used. As far as the stress values are concerned, they are similar for all methods (250–300 MPa), except for the snow plow and injection-molded techniques using Grandio and Grandio Flow composites, where the maximum von Mises stress value was more than double (approximately 700 MPa). When using the combination of Grandio and Grandio Flow materials, the 1 mm thickness of the fluid composite layer was found to have a major influence on occlusal forces damping as opposed to 0.5 mm. Therefore, the Bichacho technique is indicated at the expense of the snow plow and injection-molded techniques. The composite materials used by us in this study are state-of-the-art, with clear indications for restoring cavities resulting from the treatment of carious lesions. However, their association and application technique in the case of Class II cavities is of clinical importance for resistance to masticatory forces.https://www.mdpi.com/2079-4983/14/7/354Bichachobruxismclass II cavitydental restorationfluid compositesinjection molding |
| spellingShingle | Mihaela Jana Țuculină Adela Nicoleta Staicu Maria Cristina Munteanu Cristian Niky Cumpătă Bogdan Dimitriu Ana Maria Rîcă Maria Cristina Beznă Dragoș Laurențiu Popa Alexandru Dan Popescu Tiberiu Țîrcă Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior Journal of Functional Biomaterials Bichacho bruxism class II cavity dental restoration fluid composites injection molding |
| title | Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior |
| title_full | Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior |
| title_fullStr | Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior |
| title_full_unstemmed | Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior |
| title_short | Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior |
| title_sort | study on the restoration of class ii carious cavities by virtual methods simulation of mechanical behavior |
| topic | Bichacho bruxism class II cavity dental restoration fluid composites injection molding |
| url | https://www.mdpi.com/2079-4983/14/7/354 |
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