| ORIGINAL ARTICLE |
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| Year : 2022 | Volume
: 11
| Issue : 1 | Page : 11 |
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Ion release and surface roughness of silver soldered bands with two different polishing methods: An in-vitro study
Ramiro Estacia da Silveira, Tatiana Siqueira Gonçalves, Helena Reis de Souza Schacher, Luciane Macedo de Menezes
Dental Program, Orthodontics – School of Health and Life Sciences, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
Correspondence Address:
Luciane Macedo de Menezes
Pontifícia Universidade Católica do Rio Grande do Sul, Dental Program - Building n.6, Av. Ipiranga 6681/209, Porto Alegre - 90619-900, RS
Brazil
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/jos.jos_157_21
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OBJECTIVE: To evaluate the surface roughness and ion release of silver-soldered joints by using two polishing methods.
METHODS: 174 orthodontic bands with and without silver-soldered joints were evaluated and divided into three groups: two experimental, with different polishing methods (SP1 and SP2), and one control (SS) composed of bands without silver solder. For ionic release, 50 bands of each group were immersed in saline solution and submitted to atomic absorption spectrophotometry to quantify the amount of Fe, Ni, Cr (in all the three groups), Ag, Cu, Cd, and Zn (in the two experimental groups). A rugosimeter was employed to verify the surface roughness.
RESULTS: Ni and Cr were released in higher amounts after soldering. Cd, Ag, Zn, and Cu may be released from silver-soldered bands independently of the polishing method employed. Ag was released in higher amounts from the soldered bands that presented higher surface roughness.
CONCLUSIONS: Differences exist in relation to the surface roughness of silver-soldered bands when distinct polishing methods are used. Toxic ions may be released from silver soldered joints and higher surface roughness may cause higher ionic release.
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