Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane
ABSTRACT Introduction: Plasma-polymerized film deposition was created to modify metallic orthodontic brackets surface properties in order to inhibit bacterial adhesion. Methods: Hexamethyldisiloxane (HMDSO) polymer films were deposited on conventional (n = 10) and self-ligating (n = 10) stainles...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Dental Press Editora
|
| Series: | Dental Press Journal of Orthodontics |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512017000400077&lng=en&tlng=en |
| _version_ | 1818212519128334336 |
|---|---|
| author | Rogerio Amaral Tupinambá Cristiane Aparecida de Assis Claro Cristiane Aparecida Pereira Celestino José Prudente Nobrega Ana Paula Rosifini Alves Claro |
| author_facet | Rogerio Amaral Tupinambá Cristiane Aparecida de Assis Claro Cristiane Aparecida Pereira Celestino José Prudente Nobrega Ana Paula Rosifini Alves Claro |
| author_sort | Rogerio Amaral Tupinambá |
| collection | DOAJ |
| description | ABSTRACT Introduction: Plasma-polymerized film deposition was created to modify metallic orthodontic brackets surface properties in order to inhibit bacterial adhesion. Methods: Hexamethyldisiloxane (HMDSO) polymer films were deposited on conventional (n = 10) and self-ligating (n = 10) stainless steel orthodontic brackets using the Plasma-Enhanced Chemical Vapor Deposition (PECVD) radio frequency technique. The samples were divided into two groups according to the kind of bracket and two subgroups after surface treatment. Scanning Electron Microscopy (SEM) analysis was performed to assess the presence of bacterial adhesion over samples surfaces (slot and wings region) and film layer integrity. Surface roughness was assessed by Confocal Interferometry (CI) and surface wettability, by goniometry. For bacterial adhesion analysis, samples were exposed for 72 hours to a Streptococcus mutans solution for biofilm formation. The values obtained for surface roughness were analyzed using the Mann-Whitney test while biofilm adhesion were assessed by Kruskal-Wallis and SNK test. Results: Significant statistical differences (p< 0.05) for surface roughness and bacterial adhesion reduction were observed on conventional brackets after surface treatment and between conventional and self-ligating brackets; no significant statistical differences were observed between self-ligating groups (p> 0.05). Conclusion: Plasma-polymerized film deposition was only effective on reducing surface roughness and bacterial adhesion in conventional brackets. It was also noted that conventional brackets showed lower biofilm adhesion than self-ligating brackets despite the absence of film. |
| first_indexed | 2024-12-12T05:49:41Z |
| format | Article |
| id | doaj.art-7fc24fbd034c40c7b14cc460aca4fa95 |
| institution | Directory Open Access Journal |
| issn | 2177-6709 |
| language | English |
| last_indexed | 2024-12-12T05:49:41Z |
| publisher | Dental Press Editora |
| record_format | Article |
| series | Dental Press Journal of Orthodontics |
| spelling | doaj.art-7fc24fbd034c40c7b14cc460aca4fa952022-12-22T00:35:43ZengDental Press EditoraDental Press Journal of Orthodontics2177-6709224778510.1590/2177-6709.22.4.077-085.oarS2176-94512017000400077Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxaneRogerio Amaral TupinambáCristiane Aparecida de Assis ClaroCristiane Aparecida PereiraCelestino José Prudente NobregaAna Paula Rosifini Alves ClaroABSTRACT Introduction: Plasma-polymerized film deposition was created to modify metallic orthodontic brackets surface properties in order to inhibit bacterial adhesion. Methods: Hexamethyldisiloxane (HMDSO) polymer films were deposited on conventional (n = 10) and self-ligating (n = 10) stainless steel orthodontic brackets using the Plasma-Enhanced Chemical Vapor Deposition (PECVD) radio frequency technique. The samples were divided into two groups according to the kind of bracket and two subgroups after surface treatment. Scanning Electron Microscopy (SEM) analysis was performed to assess the presence of bacterial adhesion over samples surfaces (slot and wings region) and film layer integrity. Surface roughness was assessed by Confocal Interferometry (CI) and surface wettability, by goniometry. For bacterial adhesion analysis, samples were exposed for 72 hours to a Streptococcus mutans solution for biofilm formation. The values obtained for surface roughness were analyzed using the Mann-Whitney test while biofilm adhesion were assessed by Kruskal-Wallis and SNK test. Results: Significant statistical differences (p< 0.05) for surface roughness and bacterial adhesion reduction were observed on conventional brackets after surface treatment and between conventional and self-ligating brackets; no significant statistical differences were observed between self-ligating groups (p> 0.05). Conclusion: Plasma-polymerized film deposition was only effective on reducing surface roughness and bacterial adhesion in conventional brackets. It was also noted that conventional brackets showed lower biofilm adhesion than self-ligating brackets despite the absence of film.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512017000400077&lng=en&tlng=enBraquetes ortodônticosAdesão bacterianaHexametildissiloxano. |
| spellingShingle | Rogerio Amaral Tupinambá Cristiane Aparecida de Assis Claro Cristiane Aparecida Pereira Celestino José Prudente Nobrega Ana Paula Rosifini Alves Claro Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane Dental Press Journal of Orthodontics Braquetes ortodônticos Adesão bacteriana Hexametildissiloxano. |
| title | Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane |
| title_full | Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane |
| title_fullStr | Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane |
| title_full_unstemmed | Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane |
| title_short | Bacterial adhesion on conventional and self-ligating metallic brackets after surface treatment with plasma-polymerized hexamethyldisiloxane |
| title_sort | bacterial adhesion on conventional and self ligating metallic brackets after surface treatment with plasma polymerized hexamethyldisiloxane |
| topic | Braquetes ortodônticos Adesão bacteriana Hexametildissiloxano. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512017000400077&lng=en&tlng=en |
| work_keys_str_mv | AT rogerioamaraltupinamba bacterialadhesiononconventionalandselfligatingmetallicbracketsaftersurfacetreatmentwithplasmapolymerizedhexamethyldisiloxane AT cristianeaparecidadeassisclaro bacterialadhesiononconventionalandselfligatingmetallicbracketsaftersurfacetreatmentwithplasmapolymerizedhexamethyldisiloxane AT cristianeaparecidapereira bacterialadhesiononconventionalandselfligatingmetallicbracketsaftersurfacetreatmentwithplasmapolymerizedhexamethyldisiloxane AT celestinojoseprudentenobrega bacterialadhesiononconventionalandselfligatingmetallicbracketsaftersurfacetreatmentwithplasmapolymerizedhexamethyldisiloxane AT anapaularosifinialvesclaro bacterialadhesiononconventionalandselfligatingmetallicbracketsaftersurfacetreatmentwithplasmapolymerizedhexamethyldisiloxane |