Estudio piloto in vitro para determinar la precisión del ARCUSdigma en la determinación de posiciones condilares / In vitro pilot study to determine the accuracy of the ARCUSdigma to determine condylar positions

En este trabajo pretendemos determinar la precisión, entendida como el grado de concordancia de las medidas entre si, de un pantógrafo electrónico (ARCUSdigma) en la determinación de dos posiciones condilares seleccionadas, sobre una muestra constituida por los modelos de siete pacientes montados en articulador semiajustable. Tras analizar los resultados obtenidos y teniendo en cuenta las limitaciones con que cuenta el estudio, podemos concluir que dicho instrumento presenta una alta precisión a la hora de realizar tales determinaciones (AU)

In this work we seek to determine the accuracy (it is the concordance of the measures) of an electronic pantograph (ARCUSdigma) to determine two condylar positions. We have a sample constituted by the models of seven patients mounted in a semiajustable articulator. In spite of the limitations of this study, the results indicate that the instrument has a high precision for these determinations (AU)

Fiabilidad y validez de los diferentes sistemas de registros de la inclinación de la trayectoria condilar (ITC). Revisión bibliográfica / Reliability and validity of different systems for recording condylar inclination. A literature review

Desde que fuera descrita por Balkwill, la inclinación de la trayectoria condilar ha representado el más importante parámetro a individualizar para realizar los trabajos de rehabilitación protésica. Son muchos los sistemas que se han desarrollado para determinar el valor de éste ángulo en nuestros pacientes. Registros plásticos, dinámicos, gráficos... Es nuestra intención por ello, realizar una revisión a cerca de la fiabilidad y la validez de todos estos procedimientos, que por norma general han resultado controvertidos a lo largo del tiempo y de los que existe poco consenso sobre la exactitud de sus mediciones (AU)

Since it was described by Balkwill in 1866, the protrusive condylar inclination has represented the most important parameter that we must know in order to make an oral rehabilitation. There are a lot of systems developed to determine this agle in our patients: interocclusal estatic or dynamic records, graphics... We intend for that reason to get a revision about the reliability and validity of these procedures, that commonly have been considered controversial and with little consensus about the accuracy of its measurements (AU)

[Latero-protrusive checkbites and setting of a semi-adjustable articulator]. / Mordus de latéro-propulsion et réglage d'un articulateur semi-adaptable.

The authors propose an original method for the setting of a semi-adjustable articulator based on latero-protrusive check-bites. This study compares two setting methods. The first was used as a control. It makes use of protrusion and lateral check-bites for the adjustment of the condylar path angle and Bennett's angle. The second method, adjusts the two parameters using only latero-protrusion check-bites. Recordings were taken on 15 young patients aged from 24 to 32 years old, having a healthy and complete dentition without any subjective symptomatology of T.M.J. The recordings were always made by the same operator. According to a strict methodology, the same protocole was used for the recording of the check-bites with both methods, mounting of the models on the articulator and adjustment of the angles. For the first method, the check-bites were taken with a 5 mm protrusion previously determined on the articulator. This position was reported and marked in the mouth using indelible ink. Likewise, a 5 mm lateral bites position on the working side was determined for both sides. With the second method, the lateroprotrusion bites were taken with a 3 mm displacement of the condyle on the working side and 5 mm on the non-working side. In both methods, the values of the condylar path angle and Bennett's angle were revealed and compared for all the patients. Subsequently to a statistical analysis, the authors concluded on the similarity of the results for the two methods, confirming the interest of a single latero-protrusion check-bite which is easier to obtain, is economical in terms of time, and entails a lesser number of bites to be made.

[A splint construction technique for coadjuvant treatment of parafunctions]. / Una técnica de elaboración de férulas para el tratamiento coadyuvante de parafunciones.

In this paper, we introduce a technique of elaboration of soft acrylic's splints as soon as its respective indications. Its main advantage, in addition to his easy and quick making, is the creation of a inner tube between the splint and the occlusal surface that it provides a more even distribution of the pressures exercised by the mastication's forces on the teeth.

[Comparative study of two Arcon articulators with different transference face bows]. / Estudio comparativo de dos articuladores Arcón con distintos arcos faciales de transferencia.

This paper is about the possible influence that the use of two different face archs on the transference of the upper model, should have in the later regulation of the semiadjustable articulator Arcon type.