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Odontol. pediatr. (Lima) ; 12(2): 102-109, jul.-dic. 2013. tab, ilus
Article in Spanish | LILACS, LIPECS | ID: lil-721917

ABSTRACT

En la literatura existen reportes sobre las diversas formas de las fosas y fisuras demolares permanentes y premolares. Se conocen las características de éstas y se da por hecho que las estructuras dentales son semejantes en ambas denticiones. Por lo que es necesario abordar el estudio de las características del esmalte de la dentición temporal. Objetivo: Cuantificar la frecuencia de cada forma y profundidad de fosas y fisuras de molares temporales de la clasificación de Nagano. Material y métodos: En un estudio observacional descriptivo ex vivo se analizó una muestra obenida por donación de 101 cortes correspondientes a 67 coronas de molares temporales sin cariesconservadas en agua destilada, pertenecientes a niños mexicanos aparentemente sanos. Las va riables forma y profundidad se identificaron al microscopio estereoscópico por un solo observador (k=.8624). El grosor de los cortes obtenidos por el método de desgaste midieron en promedio 5mm. Resultados: El 28.71% de las fosas y fisuras identificadas corresponden al grupo 5 Características de las “otras formas” de Nagano de fosas y fisuras de molares temporales Features of “other shapes” of Nagano of pit and fissures in primary molars Artículo Original Esther Vaillard Jiménez 1 Enrique E.Huitzil Muñoz Aída Ortega Cambranis 3 S. Abril García Damián 41 Maestra en Estomatología Pediátrica. FEBUAP (México) 2 Maestro en Educación Superior. FEBUAP (México) 3 Maestra en Fisiología. FEBUAP (México) 4 Alumna egresada de la Maestría en C’s estomatológicas en Pediátrica Facultad de Estomatología de la Benemérita Universidad Autónoma de Puebla.


In literature there are reports on the various forms of pits and fissures of permanent molars and pre molars. Their characteristics are known and it is assumed that dental structures are similar in both dentitions. So it is necessary to approach the study of the characteristics of the enamel in primary teeth. Objective: to quantify the frequency of each shape and depth of pits and fissures of molars under the Nagano classification. Material and methods: in an ex vivo observational study a sample obtained by donation of 101 courts to 67 crowns for primary molars without decay preserved in distilled ware is analyzed, this sample belongs to Mexican children with an apparent healthy shape and depth, variables were identified under the stereomicroscope by a single observer (k=8624) The thickness of the slices obtained by the method of wear measured on average o.5 mm. Results: 28.71% of the pits and fissures identified relate to group 5 Nagano. Forms were recognized: flask=4.95%, II=3.96% =3.96 Globe, drop= 3.96% = 2.97%inverted Y, delta = 2.97% and trilobulada= 2.97% zone. According to the depth were identified as medium depth = 48.51%. Deep and surface = 33.66 = 17.82%. Conclusion: There is great variety in the shape and depth of pits and fissures of molars enamel. The high percentage of undescribed forms by Nagano proves to be addressed as a research problem of morph-histological characteristics of the primary dentition.


Subject(s)
Female , Child , Tooth, Deciduous , Tooth, Deciduous/abnormalities , Dental Fissures , Epidemiology, Descriptive , Observational Studies as Topic , Prospective Studies , Cross-Sectional Studies
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