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Revista odontológica mexicana
Print version ISSN 1870-199X
Rev. Odont. Mex vol.13 n.1 Ciudad de México Mar. 2009
https://doi.org/10.22201/fo.1870199xp.2009.13.1.15616
Trabajos originales
Determinación de cambios en el perfil blando del tercio inferior facial al retirar la aparatología ortodóncica fija
Determination of changes in the soft tissues of the inferior third in the facial profile when the orthodontic appliance is removed
*Profesora de Asignatura en Ortodoncia, División de Estudios Profesionales, FO UNAM.
§ Profesor de Carrera en Ortodoncia, División de Estudios Profesionales y División de Estudios de Postgrado e Investigación, FO UNAM.
II Profesor de Asignatura, División de Estudios de Postgrado e Investigación, FO UNAM.
Los tejidos blandos peribucales sufren modificaciones al retirar los brackets, probablemente por presentarse una adaptación neuromuscular. El propósito de este estudio fue determinar los cambios cefalométricos de los tejidos blandos del tercio inferior facial que se pueden presentar al retirar la aparatología ortodóncica fija. A 40 pacientes de ambos sexos, de edad entre 18 y 25 años, se les tomaron radiografías laterales de cráneo antes y 10 días después de retirar la aparatología fija (brackets). Se realizaron mediciones de los análisis cefalométricos de Ricketts y Holdaway de los tejidos blandos del tercio inferior facial. Para el análisis estadístico se utilizaron las pruebas de Wilcoxon y t de Student. Los resultados mostraron diferencias estadísticamente significativas para las mediciones de sulcus superior (Ss), labio inferior (Li) y sulcus inferior (Si), Ss profundo y ángulo nasolabial (ANL). El ángulo mentolabial (AML) no presentó cambios significativos. Se concluye que existen cambios con tendencia a retrusión de los tejidos blandos del tercio inferior facial después de retirar los brackets, probablemente por presentarse una adaptación neuromuscular.
Palabras clave: Adaptación neuromuscular; perfil blando; brackets
The perioral soft tissues change when braces are removed; probably this is caused by a neuromuscular adaptation. The objective of this study was to determine the possible cephfalomet-ric changes in the soft tissues of the inferior third in the facial profile when the orthodontic appliance is removed. Craniolateral radiographs were taken before and ten days after removing the upper and lower fixed braces in 40 patients, both male and female, between 18 and 25 years old. The soft tissue measures were done using the analysis of Ricketts and Holdaway. The t Student and Wilcoxon test for paired samples were used for the data analysis. The results were statistically significant for the measures of Superior sulcus (Ss), inferior Lip (Li), Inferior sulcus (Si), Ss depth and Naso labial angle (ANL). In the Mentolabi-al angle (AML) there were no statistically changes. It was concluded that there are changes with tendency to retrusion in the inferior third of soft tissues, probably this is because the neuro-muscular adaptation in such tissues.
Key words: Neuromuscular adaptation; soft tissues profile; braces
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