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Eficacia del índice mandibular canino en la determinación del sexo de una población peruana: un estudio transversal
Efficacy of the canine mandibular index in determining the sex of a Peruvian population: a cross-sectional study
DOI:
https://doi.org/10.15446/rsap.v25n3.105126Palabras clave:
Odontología forense, odontometría, sexo (es)Forensic dentistry, odontometry, sex (en)
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Objetivos Determinar la eficacia del índice mandibular del canino (IMC) en una población universitaria del norte del Perú.
Material y Métodos El estudio es descriptivo, observacional, transversal, prospectivo. La muestra estuvo constituida por 168 personas: 84 hombres y 84 mujeres, estudiantes de ciencias de la salud de una universidad privada de Piura (Perú), cuyas edades estuvieron comprendidas entre los 18 y los 35 años. Se elaboraron modelos de yeso y mediante el uso de un vernier digital calibrado se realizó la medición del ancho mesio-distal máximo del canino mandibular y la distancia intercanina. De la fracción de ambas magnitudes se obtuvo el IMC, el cual fue ajustado para la población estudiada. La eficacia para la estimación de sexo de este nuevo punto de corte fue estimada sobre la base del área bajo la curva ROC y el estadístico Hanley y McNei.
Resultados El nuevo IMC encontrado en nuestra población fue de 0,258. Tanto el ancho mesiodistal de canino mandibular como la distancia intercanina demostraron ser discriminantes de sexo (p<0,05); no hubo diferencias significativas (p>0,05) en el diámetro mesiodistal de los caninos derecho e izquierdo; es posible utilizar cualquiera de los dos.
Conclusiones La efectividad del IMC para la estimación del sexo con el punto de corte estimado para la población del norte del Perú es del 71,7 %, porcentaje que sirve para la toma de decisiones. Sin embargo, se recomienda complementar con otros medios odontológicos basados en odontometría y osteometría, puesto que la certeza no es absoluta.
Objectives To determine the effectiveness of the Canine Mandibular Index (CMI) in a university population in northern Peru.
Material and Methods Descriptive, observational, cross-sectional and prospective studies. The sample consisted of 168 persons: 84 males and 84 females, students of health sciences from a private university in Piura (Peru), whose ages ranged from 18 to 35 years. Plaster models were made and, by using a calibrated digital vernier, the maximum mesiodistal width of the mandibular canine and the intercanine distance were measured. From the fraction of both magnitudes, the BMI was obtained, which was adjusted for the population studied. The efficacy for the sex estimation of this new cut point was estimated based on the AUC and Hanley and McNeil test.
Results The new CMI found in our population was 0.258. Both the mesiodistal width of mandibular canine and the intercanine distance were shown to be sex-discriminatory (p<0.05); there were no significant differences (p>0.05) in the mesiodistal diameter of the right and left canine, being possible to use either of the two.
Conclusions The effectiveness of the CMI for sex estimation, with the estimated cut-off point for the population of northern Peru is 71.7 %, this percentage is used for decision making, however it is recommended to complement other dental means based on odontometry and osteometry, since the certainty is not absolute.
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