ABSTRACT

Objectives

To evaluate the ability of different esthetic archwires to retain oral biofilms in vitro.

Materials and Methods

Seven different brands of coated orthodontic archwires were tested: two epoxy coated, two polytetrafluoroethylene coated, two rhodium coated, and one silver plus polymer coated. Conventional uncoated metallic archwires were used as controls. Streptococus mutans adherence to archwires was quantified by colony count following 24 hours of biolfilm growth, and total wire-associated biofilm was measured using a crystal violet staining assay. For both tests, two conditions were used: 0% sucrose and 3% sucrose. For statistical analysis, P < .05 was considered as statistically significant.

Results

For S. mutans colony forming units per biofilm, there were no statistically significant differences among the various archwires (P = .795 for 0% sucrose; P = .905 for 3% sucrose). Regarding total biofilm formed on archwires in the 3% sucrose condition, there were statistically significant differences in crystal violet staining only for the comparison between Niti Micro Dental White and Copper Ni-Ti wires (P < .05).

Conclusions

The clinical use of esthetic-coated orthodontic wires may be considered to have similar risks as uncoated archwires for biofilm retention.

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Author notes

The first two authors contributed equally to this work.

a

Orthodontist, Private Practice, Augusta, Ga, USA.

b

Ph.D. Student, Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil.

c

Assistant Professor, Division of Integrated Biomedical Sciences, School of Dentistry, University of Detroit Mercy, Detroit, Mich, USA.

d

Laboratory Technician, Division of Integrated Biomedical Sciences, School of Dentistry, University of Detroit Mercy, Detroit, Mich, USA.

e

Dental Student, School of Dentistry, University of Detroit Mercy, Detroit, Mich, USA.

f

Research Assistant, Division of Integrated Biomedical Sciences, School of Dentistry, University of Detroit Mercy, Detroit, Mich, USA.

g

Associate Professor, Division Director of Clinical Essentials and Simulation, Dental Materials, School of Dentistry, University of Detroit Mercy, Detroit, Mich, USA.

h

Assistant Professor, Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, Pachuca, Hidalgo, Mexico.

i

Associate Professor, Graduate Program in Dentistry, Faculty of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.