Estudio comparativo entre efecto del resorte cerrado de nitinol y el arco utilitario de retraccion de ricketts en la retraccion del segmento anterior en pacientes tratados con extracciones de premolares superiores, en la clínica de ortodoncia de la escuela de posgrado “Dr. Jose Apolo Pineda”de la Facultad Piloto de Odontología de la Universidad de Guayaquil en el periodo 2013 al 2015
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2016-11
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Editorial de Ciencias Odontológicas Universidad de Guayaquil
Resumen
El cierre de espacio en ortodoncia se consigue mediante la mecánica segmentaria o seccional, sin fricción y mecánica de deslizamiento o con fricción. Objetivo: comparar la efectividad entre el resorte cerrado de nitinol y el arco utilitario de retracción de Ricketts usados en la retracción del segmento anterior en pacientes tratados con extracciones de premolares de la arcada superior, en la Escuela de Posgrado de la Facultad de Odontología en el periodo 2013 al 2015. Métodos: estudio experimental descriptivo, muestra aleatoria de 8 casos clínicos que concluyen el tratamiento, comparando el arco Retractor de Ricketts en acero 0,016” x 0,016”, con dos ansas a cada lado, activándole en distal del tubo de la pieza dentaria 6, con activación de 2 mm que proporciona fuerza de 200gr, y el resorte cerrado de nitinol de 200gr de fuerza, colocado el ojal en el hook de la pieza 6 al climpable hook ubicado entre el incisivo lateral y el canino, se activa con alambre de ligadura 0,025, midiendo la fuerza con el dinamómetro estirando unos 2 a 3mm que da una fuerza de 200gr. Resultados: el Retractor de Ricketts es más efectivo con el 50% de cierre en 4 meses, un promedio mensual de cierre de 1,24 mm por lado, 75% que presenta poco dolor y el 100% sin inflamación periodontal, con el resorte cerrado de Nitinol que el 50% de paciente cierran en 5 meses a un promedio de 1,02 mm mensual por lado, 75% presentan dolor y el 100% inflamación periodontal.
The closure of space in orthodontics is achieved through segmental or sectional mechanics, without friction and mechanics of sliding or friction. Objective: To compare the effectiveness between the closed nitinol spring and the utility arch of Ricketts retraction used in anterior segment retraction in patients treated with extractions of premolars from the upper arch, at the Postgraduate School of the Faculty of Dentistry at Period 2013 to 2015. Methods: experimental descriptive study, random sample of 8 clinical cases that concluded the treatment, comparing the Ricketts Retractor in steel 0.016 "x 0.016", with two loops on each side, activating it in distal of the tube of the Tooth 6, with activation of 2 mm that provides strength of 200gr, and the closed nitinol spring of 200gr of force, placed the buttonhole in the hook of the piece 6 to the climapable hook located between the lateral incisor and the canine, is activated With ligature wire 0.025, measuring the force with the dynamometer stretching about 2 to 3mm giving a force of 200gr. Results: Ricketts Retractor is more effective with a 50% closure in 4 months, a monthly average closure of 1.24 mm per side, 75% with little pain and 100% with no periodontal inflammation, with the closed spring Of Nitinol that 50% of patients close in 5 months to an average of 1.02 mm monthly per side, 75% present pain and 100% periodontal inflammation.
The closure of space in orthodontics is achieved through segmental or sectional mechanics, without friction and mechanics of sliding or friction. Objective: To compare the effectiveness between the closed nitinol spring and the utility arch of Ricketts retraction used in anterior segment retraction in patients treated with extractions of premolars from the upper arch, at the Postgraduate School of the Faculty of Dentistry at Period 2013 to 2015. Methods: experimental descriptive study, random sample of 8 clinical cases that concluded the treatment, comparing the Ricketts Retractor in steel 0.016 "x 0.016", with two loops on each side, activating it in distal of the tube of the Tooth 6, with activation of 2 mm that provides strength of 200gr, and the closed nitinol spring of 200gr of force, placed the buttonhole in the hook of the piece 6 to the climapable hook located between the lateral incisor and the canine, is activated With ligature wire 0.025, measuring the force with the dynamometer stretching about 2 to 3mm giving a force of 200gr. Results: Ricketts Retractor is more effective with a 50% closure in 4 months, a monthly average closure of 1.24 mm per side, 75% with little pain and 100% with no periodontal inflammation, with the closed spring Of Nitinol that 50% of patients close in 5 months to an average of 1.02 mm monthly per side, 75% present pain and 100% periodontal inflammation.
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RICKETTS, RESORTE CERRADO DE NITINOL, ORTODONCIA, RETRACCION DEL SEGMENTO ANTERIOR