When modified Peek based composite may be superior to Stainless Steel, for pediatric crowns
| Autor: | Silva, Filipe Samuel, Carvalho, Óscar Samuel Novais, Pinto, João Pedro Figueiredo, Madeira, Sara Cristina Soares, Arieira, Ana Filipa Amorim, Rodrigues, Flávio Gabriel Silva |
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| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Popis: | Oral Presentation held at 29th IAPD Congress, Maastricht, the Netherlands, June 14-17, 2023. Background: This in vitro study provides evidence of mechanical, mechanical fatigue, wear, abrasion, biological, anti-bacterial, adhesion, and color properties, of both a modified Peek-based composite (mPbc) and stainless steel (SS), to compare both materials for application in pediatric crowns. Methods: The following tests, representing different intra-oral conditions, were performed: Strength and elasticity/geometrical adaptability tests, representing crowns placement. Compression fatigue tests, representing 10 years chewing, in artificial saliva, under cyclic loads up to 400N(40kg), at 2Hz frequency. Wear tests in artificial saliva, under 2 Hz alternate movement, representing wear between tooth and hard food. Abrasion tests representing 10 years dental tooth brushing, in a slurry containing tooth paste. Biological compatibility, with fibroblasts, to assess acceptance of this material by gingiva. Anti-bacterial properties with a co-culture of Staphylococcus Aureus and Pseudomonas Aeruginosa. Adhesion of mPbc to a cement, representing clinical placement of crowns to tooth and respective clinical protocol. Color, compared to natural tooth. Results: Results of all previous tests reveal that mPbc is superior to SS in almost all properties, if specific crown’s geometrical specifications and clinical protocol is followed. Conclusion: It can be concluded that, under some specific conditions, modified peek based composite crowns provide a substantial superior behavior than stainless steel, for application in pediatric crowns. This work was supported by Fundação para a Ciência e Tecnologia through reference projects UIDB/04436/2020 and UIDP/04436/2020. |
| Databáze: | OpenAIRE |
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