RUGAS PALATINAS

¿Que son?

Las rugas palatinas son eminencias papilares que se encuentran en la parte anterior del paladar duro

Comienzan a formarse aproximadamente a partir del sexto mes de vida intrauterina

La identificación palatoscópica es aplicable a:

1. Sujetos vivos.

2. Cadáveres recientes.

3. Cadáveres momificados, antiguos o recientes.

Las rugas palatinas son diferentes, inmutables y perennes; por estas características, no existen dos conjuntos de rugas palatinas iguales, no pueden cambiar de posición y duran toda la vida.

Clasificación de las rugas palatinas

SEGÚN SU FORMA

REVISION BIBLIOGRAFICA

Objective:The aim of the study was to investigate differences in the palatal rugae patterns in males and females of a cross-sectional hospital-based coastal Andhra population and application of discriminant function analysis in sex identification.

Article 5.Sex determination by discriminant function analysis of

palatal rugae from a population of coastal AndhraJ Forensic Dent Sci. 2011 Jul-Dec; 3(2): 58–62.

doi:  10.4103/0975-1475.92144

Materials and Methods:One hundred pre-orthodontic plaster casts, equally distributed between males and females belonging to an age range of 15-30 years, were examined for different rugae patterns. Thomas classification was adopted for analysis The method of identification of the palatal rugae pattern was based on the classification of Thomas et al., (1983). This classification includes number, length, shape, and unification patterns of rugae.Having determined the length of all rugae, three categories were formed:1) Primary rugae (5-10 mm)2) Secondary rugae (3-5 mm)3) Fragmentary rugae (less than 3 mm)All rugae were considered for the study irrespective of their length.

Results:Difference in unification pattern among males and females was found to be statistically significant. The total number of the rugae was not statistically significant between the sexes. Association between rugae length and shape with sex determination was computed using discriminant analysis which enabled sex differentiation in this population with an accuracy of 78%.

Conclusion:Palatal rugae revealed a specific pattern in unification among males and females of the coastal Andhra population. Discriminant function analysis enabled sex determination of individuals. However, these interpretations were precluded by the small sample size and further research work on larger samples and use of different classification systems is required to validate its use in forensic science.

Objetive:To determine if the palatal rugae have a characteristic pattern in untreated class II div 1 malocclusions compared to normal class I occlusions, and to provide a valuable insight whether palatal rugae can be taken up as additional criteria for classifying malocclusions.

Article 6.Comparative study of palatal rugae pattern in class II div 1

and class I individualsJ Pharm Bioallied Sci. 2012 August; 4(Suppl 2): S358–S363.

doi:  10.4103/0975-7406.100271

Materials and MethodsThe study was conducted on initial maxillary dental casts of 27 individuals with untreated class II div 1 malocclusion, of whom 14 were females and 13 were males, with age ranging from 16 to 24 years. Initial maxillary dental casts of 24 individuals (12 males and 12 females) with untreated class I occlusion matched to the same age group as above were taken up. Impressions were made of alginate and poured with type III dental stone.

Results:There was no statistically significant difference in the mean intermolar widths of the two groups. The first, second and third palatal rugae were shorter in class II div 1 patients than in class I patients which was statistically significant. All the patients with Angle's class I occlusion had good pattern of palatal rugae falling in the score range of 1–3, whereas 22% of the patients with class II div 1 had poor pattern of palatal rugae, with score 4 and 2 patients exhibiting a score of 4 and 5, respectively, but this was not statistically significant.

Conclusion

There was a significant constriction of the palatal rugae in class II div 1 individuals as compared to class I individuals, though they were matched for the same intermolar widths. There was a distinct pattern of palatal rugae between the two groups. It is too premature to make a comment on the use of palatal rugae to classify malocclusions. Though an interrelationship between size and pattern was not obtained, further studies in this direction can provide a valuable insight.

PALATAL RUGAE AS AN AID FOR PERSONAL IDENTIFICATION: A

FORENSIC STUDY

MATERIALS AND METHODS

ROLE OF PALATAL RUGAE IN FORENSIC IDENTIFICATION OF THE PEDIATRIC

POPULATION Objectives: the objectives of the study are; to study the rugae pattern in pediatric patients and to compare the patterns over a period of time and to evaluate any changes if any in terms of their relation to each other and to median plane for stability and individuality.

Materials and MethodTwenty five casts of pediatric patients who came for routine treatment two year back were selected and patients were randomly recalled for taking fresh casts for comparison. All the casts were selected from Department of Pediatric Dentistry of PDM Dental College and Research Institute Bahadurgarh India.

ResultsThe pre- and post-transverse changes of the rugae points were compared (Table 1). Although a slight decrease in the distance between the lateral point of the second rugae and the medial of the third was observed, this difference was statistically insignificant for all the points in the trans-verse direction. When we compared the pre- and post-anteroposterior changes of the rugae points , no statistically significant difference was found (P > 0.05). Comparison between the casts for changes in the position of palatal rugae points in relation to the median palatal plane showed no statistically significant difference recorded on right and left side.

DiscussionEstimation of changes in rugae patterns may aid in the diagnosis of individual in forensic cases.5 It has been shown that total number of rugae do not change throughout early childhood and adolescence and changes occur in rugae relates to their length only.1Measurement and comparison of palatal rugae length and patterns was done with the aim to evaluate their stability and individuality. It has been reported that rugoscopy was absolutely individual and could be used as a personal print for identification, and that it was completely independent of sex and age.1,2,8 Computerized analysis was done to measure different variables to obtain a standardized result. The incident of change in rugae shape was low on comparing casts which were randomly selected. Furthermore, the lateral third rugae point seems to be more stable in anteroposterior direction then other variables.In the present study all the casts were matched with significant ease, thus palatal rugae patterns are unique and do not change. Furthermore, no statistically significant effect was seen on the position of the palatal rugae over a period of time. Thus, palatal rugae pattern are sufficiently characteristic to discriminate between individuals

COMPARATIVE ANALISYS OF RUGAE PALATING USING CARREA´S METHOD IN MEMBERS OF THE

NATIONAL GENDAMERIE IN FORMOSA ARGENTINA

260: INDIVIDUOS

253 HOMBRES

7 MUJERES

METODO DE CLASIFICACION DE CARREA

TIPO I: RUGOSIDADES DIRIGIDAS HACIA MESIALTIPO II: RUGOSIDADES DIRIGIDAS LATERALMENTETIPO III: RUGOSIDADES DIRIGIDAS HACIA DISTAL

TIPI IV: VARIADO

DISTRIBUCION DE LOS TIPOS FUNDAMENTALES DE RUGOSIDADES SEGÚN CORREA

DISTRIBUCION SEGÚN MORFOLOGIA DE LAS RUGOSIDADES

RESULTADOS

Rugoscopy for Establishing Individuality

INDIAN JOURNAL OF DENTAL ADVANCEMENTS

Este estudio se llevó a cabo en el Departamento deMedicina Oral y Radiología, MR Ambedkar Dental

College y el Hospital, de Bangalore.

El estudio consistióde 90 sujetos sanos de 14 años o más.

Seleccionadas al azar 25 machos y 25 hembras: 5 familias (Padre, Madre, Niño) 20 pares de

modelos (pre y post) de los sujetos que habian completado el tratamiento de ortodoncia (10

hombres, 10Mujeres)