Efecto del nitrato de potasio en la fuerza de adhesión de brackets

Diana Carrillo Barreto; Diana Duarte Gómez; María E. González Acuña; Sandra M. Madero Gómez; Harold Morales García; Linda P. Delgado; Ivonne Ordóñez Monak

EFFECTS OF POTASSIUM NITRATE ON SHEAR BOND STRENGTH OF BRACKETS

Research Articles

Diana Carrillo Barreto Ver Biografía

Universidad Cooperativa de Colombia, sede Medellín

Diana Duarte Gómez Ver Biografía

Universidad Nacional de Colombia

María E. González Acuña Ver Biografía

Universidad Nororiental Gran Mariscal de Ayacucho

Sandra M. Madero Gómez Ver Biografía

Colegio Odontológico Colombiano

Harold Morales García Ver Biografía

Colegio Odontológico Colombiano

Linda P. Delgado Ver Biografía

Pontificia Universidad Javeriana

Ivonne Ordóñez Monak Ver Biografía

Universidad Nacional de Colombia

Introduction: During 2010 the degree research “Effects of potassium nitrate on shear bond strength of brackets” was carried out at Universidad Cooperativa de Colombia in Bogota.

Objective: To determine whether the use of desensitizing with potassium nitrate affects the bond bracket strength to enamel.

Materials and Methods: Forty-five human premolar teeth were randomly allocated in three groups (n = 15 each). Group 1: control (not treated), Group 2: desensitizer treated and after 24-hour bracket bonding; Group 3: desensitizer treated and after 5-day bracket bonding. Gemini brackets and adhesive TransbondTMXT system were used. The shear bond strength was measured using Instron, a universal testing machine.

Results: Average sbs ± standard deviation for control Group was 7.9 ± 1.9 MPa; Group 2 (24 hour) was 4.9 ± 3.0 MPa; and Group 3 (5 day) was 7.2 ± 4.1 MPa. The effect of desensitizer on sbs after 24 hours (p = 0.0038) was significant but after 5 days there was a relevant recovering.

Conclusion: The sbs reduction was 37% in group 2 (24 hour) relative to the control. It is recommended to wait about 5 days for bonding brackets after using a desensitizer agent with potassium nitrate to avoid affecting sbs.

Keywords: brackets, desensitizers, shear bond strength, potassium nitrate.

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EFFECTS OF POTASSIUM NITRATE ON SHEAR BOND STRENGTH OF BRACKETS. (2014). Revista Nacional De Odontología, 7(13), 20-25. https://revistas.ucc.edu.co/index.php/od/article/view/289

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Vol. 7 No. 13 (2011)

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2014-01-19

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