Pigment effect on the long term elasticity of elastomeric ligatures
Dental press j. orthod. (Impr.)
; 17(3): 1-6, May-June 2012. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-646345
Biblioteca responsável:
BR1.1
ABSTRACT
OBJECTIVE:
To evaluate the response of elastomeric ligatures in several colors for a 4 mm traction over time.METHODS:
Morelli® elastomeric ligatures, were submitted to traction forces using two rods of circular cross section, until a 4 mm distance was reached, matching the approximate diameter of an upper central incisor bracket of the same manufacturer. The ligatures were kept in artificial saliva immersion at 37 ºC. Forces levels were measured immediately (0 h), 2, 4, 6, 8, 10, 12, 24, 48, 72, 96 hours, 1, 2, 3, 4 weeks and results were submitted to two-way repeated-measures ANOVA statistical analysis.RESULTS:
The gray samples showed the higher initial values of tensile strength. The lowest values were presented by purple, light pink, green, black and red groups. The greater tensile strength instability was presented by red, black, silver, green and gray groups. The greater tensile strength stability was presented by deep pink, dark blue, blue, purple and light pink groups.CONCLUSION:
Elastomeric ligatures do not present stable behavior when suffering traction forces over time and different colors display different behaviors. Deep pink, dark blue, blue, purple and light pink groups, displayed the most stable forces, suggesting that they should be used during the treatment to obtain constant forces.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Idioma:
Inglês
Revista:
Dental press j. orthod. (Impr.)
Assunto da revista:
Ortodontia
Ano de publicação:
2012
Tipo de documento:
Artigo
País de afiliação:
Brasil