Effect of implantoplasty on roughness, fatigue and corrosion behavior of narrow diameter dental implants
Autor/a
Camps Font, Octavi
Toledano-Serrabona, Jorge
Juiz-Camps, Ana
Sánchez-Garcés, M.Angels
Figueiredo, Rui
Gay Escoda, Cosme
Valmaseda-Castellon, Eduard
Data de publicació
2023ISSN
2079-4983
Resum
Implantoplasty (IP) is used in dental implants with peri-implantitis and aims to remove threads and polish rough surfaces in order to prevent bacterial colonization. As a result of this procedure, implant strength might be compromised. We tested 20 tapered screw-shaped Ti6Al4V dental implants with a simulated bone loss of 50%. Ten implants underwent IP and 10 served as controls. Surface topography (Sa, Sz, Ssk, and Sdr) was analyzed with a confocal optical microscope. Subsequently, a minimum of four series of cyclic loads were applied with a servo-hydraulic mechanical testing machine (5 × 106 cycles at 15 Hz, between a maximal nominal value–starting at 529 N in the IP group and 735 N in the control group–and 10% of that force). We recorded the number of cycles until failure and the type of failure. Implant failure was analyzed by visual inspection and scanning electron microscopy. Open circuit potential and potenctiodynamic tests were carried out with high precision potentiostat using Hank’s solution at 37 °C to evaluate the effect of the implantoplasty on the corrosion resistance. Implantoplasty significantly reduced the surface topography values (median) and interquartile range (IQR); Sa from 1.76 (IQR = 0.11) to 0.49 (IQR = 0.16), Sz from 20.98 (IQR = 8.14) to 8.19 (IQR = 4.16), Ssk from 0.01 (IQR = 0.34) to −0.74 (IQR = 0.53) and Sdr from 18.20 (IQR = 2.26) to 2.67 (IQR = 0.87). The fatigue limits of the control and implantoplasty groups were 551 N and 529 N, respectively. The scanning electron micrographs showed fatigue striations indicating fatigue failure. Besides, the fractographic analysis revealed a typical brittle intergranular fracture mechanism. The infinite life range of the dental implants evaluated was largely above the threshold of usual chewing forces. Implantoplasty seems to render a fairly smooth surface and has a limited impact on fatigue resistance. In addition, implantoplasty produces a decrease in the corrosion resistance of the implant. Corrosion current density from 0.019 μA/cm2 for as-received to 0.069 μA/cm2 in the interface smooth-roughened dental implant. These places between the machining and the rough area of the implant are the most susceptible, with the appearance of pitting.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
616.3 - Patologia de l'aparell digestiu. Odontologia
Paraules clau
Implantoplastia
Fatiga
Implante dental
Ti6Al4V
Corrosión
Implantoplàstia
Fatiga
Implant dental
Ti6Al4V
Corrosió
Implantoplasty
Fatigue
Dental implants
Ti6Al4V
Corrosion
Pàgines
18
Publicat per
MDPI
Col·lecció
14; 2
Publicat a
Journal of Functional Biomaterials
Citació
Camps Font, Octavi; Toledano-Serrabona, Jorge; Juiz-Camps, Ana [et al.]. Effect of implantoplasty on roughness, fatigue and corrosion behavior of narrow diameter dental implants. Journal of Functional Biomaterials, 2023, 14(2), 61. Disponible en: <https://www.mdpi.com/2079-4983/14/2/61>. Fecha de acceso: 7 mar. 2023. DOI: 10.3390/jfb14020061
Enllaç al document relacionat
Aquest element apareix en la col·lecció o col·leccions següent(s)
- Odontologia [248]
Drets
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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