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• W2536093890 abstract "The third molar is a tooth of anatomical, surgical, prosthetic and forensic dental interest. However, there is currently a lack of updated data regarding its morphology. The aim of this study was to determine the morphometric features of third molars and their predictive capability as regards dental arch and side. Two calibrated operators (ƙ = 0.83) determined the cervicalocclusalvestibular (COV), cervicalocclusalpalatal (COP) and occlusalapical (OA) distances, mesiodistal (MD), and vestibularpalatal (VP) diameters, number of roots (R) and number of cusps (C) of 961 cadaveric third molars, both upper (n = 462) and lower (n = 499), using a CONCOR 050 thin mandible caliper (resolution 0.01 mm). Median and range for each variable were calculated and compared using Mann Whitney nonparametric test (p < 0.05). Multivariate cluster analysis was used to determine the predictive capability of each variable for dental arch and side. For upper molars (UM), 50.6% were from the right side (RS) and 49.4% from the left side (LS), while for lower molars (LM), 60.9% were from the RS and 39.1% from the LS. No significant difference was found in the study variables in LM according to side. For UM, MD diameter (10.90 mm), COP(7.42 mm) distance and number of R (3) were significantly higher (p < 0.05) forRS, and number of C (3) was higher (p < 0.0001) for LS. They were also significant predictive grouping factors for side. For dental arch, OA (17.84 mm) and COV (7.60 mm) distances, MD (11.26 mm) diameter and the number of C (5) were significantly higher (p < 0.0001) for LM, while VP (10.84 mm) and COP (7.34 mm) distances, and the number of R (3) were significantly higher (p < 0.0001) for UM. These variables were significant predictive factors for dental arch. Despite the morphometric heterogeneity of third molars, there are intrinsic parameters with predictive capability for dental arch and side, but it would be advisable to supplement this study with data from topographic occlusal variables in order to validate their predictive capability.El tercer molar es una pieza dentaria de interés odontológico anatómico, quirúrgico, endodóntico, protético y forense. Sin embargo, no hay disponibles hoy en día datos morfométricos actualizados del molar. El objetivo del trabajo fue determinar las características morfométricas de terceros molares y establecer el carácter predictivo de las mismas en cuanto a arco dental y lado. Dos operadores calibrados (ƙ = 0.83) determinaron la longitud oclusocervical vestibular (OCV) y palatina (OCP), oclusoapical (OA), diámetro mesiodistal (MD), diámetro vestíbulopalatino (VP), número de raíces (R) y número de cúspides (C), de 961 terceros molares cadavéricos, superiores (n = 462) e inferiores (n = 499), mediante el uso de un calibre de mandíbula fina CONCOR 050 (resolución 0.01 mm). Calculamos mediana y rango para cada variable y las comparamos haciendo uso de la prueba de Mann Whitney (p < 0.05). Utilizamos el análisis de cluster para determinar el valor predictivo de cada variable en cuanto a arco y lado. De los molares superiores (MS), 50.6% correspondió al lado derecho (LD) y 49.4% al lado izquierdo (LI). De los inferiores (MI), 60.9% correspondió al LD y 39.1% al LI. No hallamos diferencias significativas para las variables en estudio para los MI según su lado. Para los MS, el MD (10.90 mm), la OCP (7.42 mm) y el R (3) resultaron significativamente mayores (p < 0.05) para el LD, y el C (3), mayor (p < 0.0001) para el LI; y, además evidenciaron significancia como factores predictivos de agrupamiento para la predicción del lado. En relación al arco, la OA (17.84 mm), la OCV (7.60 mm), el MD (11.26 mm) y el C (5), resultaron significativamente mayores (p < 0.0001) en los MI, mientras que el VP (10.84 mm), la OCP (7.34 mm) y el R (3) fueron significativamente mayores (p < 0.0001) en MS. Dichas variables evidenciaron significan cia como factores predictivos para el arco. Pese a la heteroge neidad morfométrica del tercer molar, existen parámetros característicos con valor predictivo para el arco y lado, aunque sería recomendable complementar el estudio con variables topográficas oclusales a fin de validar la capacidad predictiva de los mismos." @default.
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• W2536093890 date "2016-09-01" @default.
• W2536093890 modified "2023-09-27" @default.
• W2536093890 title "Characterization of third molar morphometric variables." @default.
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