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1.
Int. j. odontostomatol. (Print) ; 14(2): 205-212, June 2020. tab, graf
Article in English | LILACS | ID: biblio-1090676

ABSTRACT

Mapudungun is a language used by Mapuche people in some regions of Chile and Argentina. The aim of this study was to describe the vowel phonemes with regard to the articulatory parameters (position of the tongue with respect to the palate and jaw opening) and acoustic parameters (f0, F1, F2 and F3) in Mapudungun speakers in the Region of La Araucanía. The vocalic phonemes of Mapudungun are six, where the first five are similar to those used in Spanish (/a e i o u/), to which is added a sixth vowel (/ɨ/) with its vocalic allophones (/ɨ/) and [Ә]. Three Mapudungun speakers were evaluated. The tongue movements were collected by Electromagnetic Articulography 3D and the data were processed with MATLAB and PRAAT software. It was possible to describe the trajectory of each third of the tongue during the production of the vowels. It was observed that the sixth vowel /Ә/ had minimal jaw opening during its pronunciation. In addition, the characteristic of /Ә/ as an unrounded mid-central vowel was corroborated. In this study, the tongue of mapudungun speakers was in a more posterior position than the found in other studies.


El Mapudungun es un lenguaje utilizado por los mapuches en algunas regiones de Chile y Argentina. El objetivo de este estudio fue describir los fonemas vocálicos respecto a los parámetros articulatorios (posición de la lengua respecto al paladar y apertura mandibular) y los parámetros acústicos (f0, F1, F2 y F3) en hablantes de Mapudungun en la Región de La Araucanía, los fonemas vocálicos de Mapudungun son seis, donde los primeros cinco son similares a los utilizados en español (/a e i o u /), a los que se agrega una sexta vocal (/ɨ/) con sus alófonos vocálicos [ɨ] y [Ә]. Se evaluaron tres hablantes de Mapudungun. Los movimientos de la lengua fueron registrados por Articulografía Electromagnética 3D y los datos fueron procesados con el software MATLAB y PRAAT. Fue posible describir la trayectoria de cada tercio de la lengua durante la producción de las vocales. Se observó que la sexta vocal /Ә/ tenía una apertura mínima de la mandíbula durante su pronunciación. Además, se corroboró la característica de /Ә/ como vocal central media no redondeada. En este estudio, la lengua de los hablantes de mapudungun estaba en una posición más posterior que la encontrada en otros estudios.


Subject(s)
Humans , Male , Female , Adult , Speech Production Measurement/instrumentation , Tongue/physiology , Phonetics , Indians, South American , Jaw/physiology , Speech Acoustics , Pilot Projects , Electromagnetic Phenomena
2.
Rev. Fac. Odontol. (B.Aires) ; 34(77): 35-42, 2019. ilus
Article in Spanish | LILACS | ID: biblio-1104093

ABSTRACT

En la odontología es frecuente que se describa la peculiaridad de los huesos maxilares en cuanto a la resistencia a las infecciones en comparación con otros huesos de la economía. O que se plantée un desafío cuando es necesario tomar una decisión acerca de aplicar diferentes conductas terapéuticas en pacientes con patologías óseas sistémicas. Por ello, esta actualización tuvo como objetivo realizar una revisión de la bibliografía para integrar y evidenciar las diferencias y similitudes entre los diferentes huesos de la economía haciendo hincapié en los huesos maxilares. Si bien éstos poseen una gran cantidad de similitudes con el resto de los huesos, también presentan diferencias que los hacen entidades únicas dentro del sistema esquelético como el origen embriológico en las células de las crestas neurales, su alta tasa de remodelación, sin olvidar que estos huesos alojan a órganos que poseen una parte de su estructura en el medio interno y otra porción en medio externo de la cavidad bucal: las piezas dentarias (AU)


Subject(s)
Humans , Bone Development/physiology , Bone Remodeling/physiology , Jaw/embryology , Jaw/physiology , Osteogenesis , Phenotype , Skeleton , Extracellular Matrix/physiology , Neural Crest/anatomy & histology , Neural Crest/growth & development
3.
Braz. oral res ; 22(2): 151-157, 2008. ilus
Article in English | LILACS | ID: lil-485955

ABSTRACT

This study aimed to present a wireless mandibular motion tracking device and optoelectronic data acquisition system developed to analyze the real-time spatial motion of the entire mandible during mouth opening and closing with no restriction of any movement. The procedures were divided into three phases: confection of a kinematic arch, dynamic digital video image acquisition, and image processing and analysis by using graphic computation. Four sequences of jaw opening/closing movements were recorded in lateral view: two from the maximum intercuspation (MIC) and the other two from a forced mandibular retruded position. Jaw motion was recorded by a digital video camera and processed as spatial coordinates corresponding to the position variation of the markers in the kinematic arch. The results showed that the method was capable of recording and processing the dynamics of the mandibular movements during jaw opening/closing using pixel-magnitude points. The mandible showed points with less displacement located near the temporomandibular joint during the opening/closing movements from the mandibular retruded position. When the jaw movements were recorded from MIC, these points were located near the mandibular foramen.


Subject(s)
Humans , Jaw Relation Record/instrumentation , Jaw/physiology , Mandible/physiology , Temporomandibular Joint Disorders/physiopathology , Temporomandibular Joint/physiopathology , Equipment Design , Image Interpretation, Computer-Assisted , Movement , Orthodontic Appliances
4.
An. acad. bras. ciênc ; 63(2): 193-200, 1991. ilus
Article in Portuguese | LILACS | ID: lil-101162

ABSTRACT

The secondary sexual dimorfism in the shark Scyliorhinus haeckelii Ribeiro, 1907 is herein presented and analysed based on the morphology og tyhe dentition, jaw and snout shape, dermal denticles and the colour of 21 specimens of the species


Subject(s)
Animals , Male , Female , Sex Characteristics , Dentition , Jaw/physiology , Sharks/physiology , Dental Pulp Calcification , Copulation , Dental Arch/anatomy & histology , Dental Arch/physiology , Jaw/anatomy & histology , Sharks/anatomy & histology
5.
Rev. bras. reumatol ; 28(6): 173-8, nov.-dez. 1988. ilus
Article in Portuguese | LILACS | ID: lil-72792

ABSTRACT

Os autores, neste trabalho, procuram focalizar alguns aspectos anatômicos e fisiológicos da articulaçäo temporomandibular e sua situaçäo dentro do sistema mastigatório


Subject(s)
Humans , Arthritis, Rheumatoid , Temporomandibular Joint/physiology , Dental Occlusion , Jaw/physiology , Temporomandibular Joint , Mastication , Models, Biological
6.
Indian J Ophthalmol ; 1987 Jan-Feb; 35(1): 39-40
Article in English | IMSEAR | ID: sea-69557
7.
Indian J Exp Biol ; 1981 Apr; 19(4): 367-70
Article in English | IMSEAR | ID: sea-56338
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