Diastema: precisando terminologia anatomica / Diastema: specifying terminologia anatomica

RESUMEN: Diastema es un término latino de origen griego incorporado a Terminologia Anatomica bajo el código A05.1.03.078. Odontológicamente, es un espacio interdentario ubicado entre dientes adyacentes del arco dental, siendo su presencia considerada normal en el periodo de dentición mixta. Fueron consultados diccionarios de los idiomas español, griego y latín, de términos médicos y etimológicos, en búsqueda de las apariciones iniciales del término diastema y sus posteriores usos en la historia. La búsqueda reportó que Diastema ha sido utilizado para indicar una distancia o intervalo, referido a lugares, tiempos e incluso entre tonos musicales. En el área de las ciencias médicas, es un término que ha señalado la separación entre los dedos o el espacio virtual creado por la insuflación de los pulmones, siendo su mayor acercamiento a la morfología en el área veterinaria para designar el espacio que separa los dientes anteriores de posteriores, especialmente en roedores y rumiantes. Para ser consistentes con los lineamentos actuales de la Federative International Programme for Anatomical Terminology y los acuerdos terminológicos de los Simposios Ibero-Latinoamericanos de Terminologia Anatomica, Histologica y Embryologica, sugerimos el reemplazo del término Diastema por Spatium interdentale, como un avance en la precisión y descripción de la estructura incorporada a Terminologia Anatomica.

SUMMARY: Diastema is a latin term of greek origin incorporated into Terminologia Anatomica under the code A05.1.03.078. Odontologically, it is an interdental space located between teeth adjacent to the dental arch, its presence being normal in the period of mixed dentition. Dictionaries of the Spanish, Greek and Latin languages, of medical and etymological terms were consulted, in search of the initial occurrences of the term Diastema and its subsequent uses in history. The search reported that Diastema has been used to indicate a distance or interval, referring to places, times and even between musical tones. In the area of medical sciences, it is a term that has indicated the separation between the fingers or the virtual space created by insufflation of the lungs, being its closest approach to morphology in the veterinary area to designate the space that separates the incisors and molars tooth, especially in rodents and ruminants. To be consistent with the current guidelines of the International Federative Program of Anatomical Terminology and the terminological agreements of the Ibero-Latin American Symposia of Anatomical, Histological and Embryological Terminology, we suggest the replacement of the Diastema period with Spatium interdentale, as an advance in accuracy and description of the structure incorporated into Terminologia Anatomica.

Stature Estimate by the Upper Arch: Carrea´s Method Modified / Estimación de la Estatura por Medio del Arco Superior: Método de Carrea Modificado

The Carrea's index is an alternative to estimate the human stature. However, in cases when the jaw is affected, this technique becomes impracticable. Expanding the use of the Carrea's index, by extending it to the upper elements, would increase the chances of the method, especially in cases when only the skull is available for analysis. The aim of the study was to test a new denominator for Carrea's index, so that it could be used for the upper arch, aiming at a new feature to estimate human stature. Plaster models of the arch and the string of the upper arch of 107 dentistry students, aged between 18 and 30 years, previously submitted to anthropometric analysis, were measured with a digital caliper. The data found were inserted in software developed to find a denominator that would result in a higher number of correct answers to real statures, evaluating the left and the right hemiarch, and their average. For the right hemiarch, the denominator with more accuracy for the real stature was the interval from 2.573 to 2.583, with 58.9 %. For the left hemiarch, the best values were from 2.553 to 2.554 with 63.6 %. The average of hemiarchs had as ideal denominator values between 2.579 and 2.581, with 60.7 %. We found no significant statistical difference between denominators. It was possible to obtain a new denominator to apply Carrea's index for the upper arch. The new method had satisfactory accuracy rate and should be tested in other populations to verify its applicability.

El índice de Carrea constituye una alternativa para la estimación de la estatura humana. Sin embargo, esta técnica se torna inviable cuando la mandíbula se encuentra comprometida. Su aplicación a partir de elementos dentales superiores, resultaría de utilidad en los casos en que sólo se dispusiese del cráneo para examinar. El objetivo del estudio fue proponer un nuevo denominador para que el índice de Carrea pueda ser utilizado para el arco superior, en la búsqueda de otro recurso para estimar la estatura humana. El arco y la cuerda fueron medidos, con un calibre digital, sobre los respectivos modelos de yeso superiores de 107 estudiantes de Odontología, que tenían entre 18 y 30 años de edad y habían sido sometidos a análisis antropométricos previos. Los datos obtenidos fueron analizados matemáticamente mediante un programa desarrollado para encontrar un denominador, que proporcionase un mayor número de aciertos para las estaturas reales, evaluando el hemiarco derecho, izquierdo y la media de los hemiarcos. Para el hemiarco derecho, el denominador más apropiado para la estatura real correspondió al intervalo 2,573-2,583, con 58,9 % de acierto. Para el hemiarco izquierdo, los mejores valores quedaron comprendidos entre 2,553 y 2,554, con 63,6 % de acierto. La media de los hemiarcos determinó guarismos ideales, oscilantes entre 2,579 y 2,581, con 60,7 % de acierto. No hubo diferencia estadísticamente significativa entre los denominadores hallados. Se obtuvo un nuevo denominador, que permitió el empleo del índice de Carrea para el arco superior, con una tasa de acierto satisfactoria. No obstante, este método debe ser probado y validado para otras poblaciones, verificando su aplicabilidad.

Wooly hair nevus

Abstract Woolly hair nevus is a rare condition characterized by a structural anomaly of the hair, restricted to certain areas of the scalp. The hair becomes coiled and slightly hypopigmented. The term woolly hair refers to changes that affect all the scalp and has a hereditary character. We present a case of woolly hair nevus, that developed at the age of 2 years, associated with dental diastema and verrucous epidermal nevus.

Finalização de tratamento ortodôntico: fechamento de diastemas com resina composta / Orthodontic treatment termination: diastema closure with composite resin

A integração de especialidades na Odontologia tem sido um recurso comumente utilizado na busca pela otimização estética e funcional dos mais variados casos clínicos. Essa multidisciplinaridade, associada à evolução das resinas compostas e de suas técnicas de utilização, proporciona aos cirurgiões dentistas a oportunidade de reproduzir com grande fidelidade os dentes naturais. O presente trabalho descreve casos clínicos multidisciplinares, expondo diferentes soluções para os diastemas dentários anteriores, ressaltando princípios estéticos para obter naturalidade no procedimento restaurador direto

The specialties integration in Dentistry has been a feature commonly used in the search for aesthetic and functional optimization in a variety of clinical cases. This multidisciplinary approach, associated with the development of composite resins and their techniques of use, gives dentists the opportunity to reproduce with great fidelity the natural teeth. This paper describes multidisciplinary clinical cases, exposing different solutions to anterior dental spaces, emphasizing aesthetic principles to achieve naturally in direct restorative procedure

Perception of smile esthetics among Indian dental professionals and laypersons.

Introduction : Patients' perceptions and expectations regarding their appearance play a significant role in treatment planning. The purpose of this study was to compare the perceptions of orthodontists, general dentists, and laypersons regarding smile esthetics after symmetrical and asymmetrical alterations in anterior teeth and their supporting tissues. Materials and Methods: Alterations were made in the crown length, crown width, midline diastema, and gingiva-to-lip relationship of the maxillary anterior teeth in the close-up photograph of a woman's smile. The attractiveness of the smile in the original image and in each of the modified images were assessed by orthodontists (n=40), dentists (n=40), and laypersons (n=40) and scored using a visual analog scale (VAS). The mean VAS scores were calculated for each photograph. ANOVA was used for comparisons between photographs and between groups. To determine threshold levels at which each group discriminated between esthetic and less esthetic dental features were determined by one-way ANOVA (F-test) followed by Newman-Keul's range test. Results : Orthodontists were found to be more critical when evaluating smile images compared to general dentists and laypersons. Symmetrical or asymmetrical alterations in the mesio-distal width of the lateral incisor of up to 2 mm was not perceived as unesthetic by general dentists and laypersons. Conclusion: Laypersons are more accepting of minor variations in anterior tooth size and alignment than orthodontists.

Perception differences of altered dental esthetics by dental professionals and laypersons.

Background: When we smile, our smile could often become the target of close scrutiny by the person you are smiling at. A trained eye readily detects any asymmetricity or any aspect of that smile which may be out of balance, or disharmonious with its environment. The purpose of this study was to determine whether any such asymmetric or symmetric dental discrepancies were detectable by various groups of evaluators. Aims: The aim was to determine whether asymmetric and symmetric anterior dental discrepancies were detectable by orthodontists, general dentists, and laypersons, and to establish threshold levels for several specific aesthetic criteria that could be used by orthodontists and general dentists as an aid in the treatment planning. Materials and Methods: Three images of smiles were intentionally altered with a software-imaging program. The alterations involved the crown length, crown width, midline diastema, and the papillary height of the maxillary anterior teeth. These altered images were then rated by groups of general dentists, orthodontists, and laypersons using a visual analog scale. Statistical analysis of their responses resulted in the establishment of threshold levels of attractiveness for each group. Results: The orthodontists were more critical than the general dentists and laypersons when evaluating asymmetric crown length discrepancies. All three groups could identify a unilateral crown width discrepancy of 2.0 mm. A small midline diastema was not rated as unattractive by any group. Reduction of papillary height was generally rated as less attractive. Conclusions: Asymmetric alterations make teeth more unattractive not only to the dental professionals, but also to laypersons.

Witkop's tooth and nail syndrome: a multifaceted approach to dental management.

Witkop's tooth and nail syndrome is a rare autosomal dominant disorder of ectodermal dysplasia characterized by hypodontia and nail dysplasia. Mutations in MSX-1 have been shown to be associated with this syndrome. There is failure of development and eruption of the dentition. Tooth shape may vary; the most common forms are conical and narrow crowns. The nails may be spoon shaped and slow growing and affect both finger and toe nails. The nail involvement is more severe in childhood. The present case describes a 14-year-old boy who showed the characteristic features of Witkop's syndrome. A multifaceted approach to the dental management of the patient is discussed.

Supranumerário (mesiodente) e sua influência no diastema mediano superior: relato de um caso na F.O.UFRJ / Supernumerary (mesiodens) and its influence in the upper median diastema: report of a case F.O.UFRJ

Os autores apresentam um caso de supranumerário (mesiodente) como agente causador do diastema mediano superior. Após revisäo de literatura, destacam os procedimentos da terapia ortodôntica empregada no tratamento