Abrasión de los metales utilizados en prótesis dental como consecuencia del cepillado dental. Estudio experimental

[spa] Estudio experimental para evaluar in vitro la abrasividad de las pastas dentales usadas frecuentemente con distintos índices RDA y sus propiedades mecánicas sobre aleaciones metálicas de uso a largo plazo (Cr-Ni,Cr-Co y Ti-Cp

Abrasión de los metales utilizados en prótesis dental como consecuencia del cepillado dental. Estudio experimental

Estudio experimental para evaluar in vitro la abrasividad de las pastas dentales usadas frecuentemente con distintos índices RDA y sus propiedades mecánicas sobre aleaciones metálicas de uso a largo plazo (Cr-Ni,Cr-Co y Ti-Cp

Factores que alteran la exactitud y precisión en la determinación del ángulo de la guía condilea mediante registros de cera con un articulador semiajustable

El objetivo del estudio fue valorar la il')fluencia del operador, del tipo de articulador y de la programación previa del ángulo de Bennett, en la precisión y exactitud de la determinación del ángulo de guía condílea en un articulador semiajustable mediante registros de cera. Siete odontoestomatólogos programaron la guía condílea de un articulador arcón y uno no arcón, antes y después de situar el ángulo de Bennett, de un voluntario. Un octavo participante realizó una axiografía del voluntario. El valor de guía condílea obtenido con un articulador semiajustable y con registros intraorales plásticos depende en gran medida del operador. El articulador no arcón fue más exacto pero menos preciso que el arcón. La colocación del ángulo de Bennett antes de programar la guía condílea no afectó la exactitud pero si aumentó la precisión

Efectos adversos del uso de la férula de avance mandibular en el tratamiento de los trastornos respiratorios del sueño. Revision de la literatura

Los trastornos respiratorios del sueño, como el ronquido o el síndrome de apneas hipoapneas obstructivas del sueño, se pueden tratar eficazmente con una férula de avance mandibular, pero puede provocar algunos efectos adversos. El odontoestomatólogo debe conocerlos y explicárselos al paciente para obtener el consentimiento informado. Se ha realizado una revisión bibliográfica de los posibles efectos adversos a nivel del sistema masticatorio del uso de las férulas de avance mandibular en el tratamiento de los trastornos respiratorios del sueño. Prácticamente la mitad de los pacientes refieren algún efecto adverso, pero en general de carácter leve y temporal. Los efectos adversos más frecuentes son dolor o sensibilidad dental (27%), xerostomía (24%), excesiva salivación (190/4), dolor o disconfort muscular o mandibular (18%), cambios oclusales (18%), dolor articular (9%), irritación gingival y ruidos articulares. El porcentaje de abandono suele estar entre el 5% y el 24%, siendo las principales causas el dolor articular, los cambios oclusales y la poca efectivida

Five years of sleep apnea treatment with a mandibular advancement device. Side effects and technical complications

Objective: To determine the variation in prevalence of temporomandibular disorders (TMD), other side effects, and technical complications during 5 years of sleep apnea treatment with a mandibular advancement device. Materials and Methods: Forty patients diagnosed with obstructive sleep apnea received an adjustable appliance at 70% of the maximum protrusion. The protrusion was then progressively increased. TMD (diagnosed according to the Research Diagnostic Criteria for TMD), overjet, overbite, occlusal contacts, subjective side effects, and technical complications were recorded before and a mean of 14, 21, and 58 months after treatment and analyzed by the Wilcoxon test (P Less-than .05). Results: Fifteen patients still used the oral appliance at the 5-year follow-up, and no significant variation in TMD prevalence was observed. Subjective side effects were common, and a significant reduction was found in overjet, overbite, and in the number of occlusal contacts. Furthermore, the patients made a mean of 2.5 unscheduled dental visits per year and a mean of 0.8 appliance repairs/relines per year by a dental technician. The most frequent unscheduled visits were needed during the first year and were a result of acrylic breakage on the lateral telescopic attachment, poor retention, and other adjustments to improve comfort. Conclusions: Five-year oral appliance treatment does not affect TMD prevalence but is associated with permanent occlusal changes in most sleep apnea patients during the first 2 years. Patients seek several unscheduled visits, mainly because of technical complications

Dental casting alloys behaviour during power toothbrushing with toothpastes of various abrasivities. Part II: corrosion and ion release

The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the corrosion behavior and ion release of the different dental casting alloys. Three dental casting alloys (Ni-Cr, Co-Cr and commercially pure Ti) were studied. Four specimens of each material were immersed, brushed without paste or brushed with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An electric toothbrush with a load of 250 g was used for 420 min. Corrosion behavior was determined by means a potenciostat with high sensitivity and the ion release determined by Inductively Coupled Plasma-Mass Spectrometry. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens exhibited the best corrosion behavior after and before the toothbrushed, being the worst of the three alloys the Cr-Ni. Titanium oxide produced spontaneously on the Ti surface is the main cause of the high corrosion resistance of the material. However, the eutectoid of the CrNi with chemical composition between different phases produces pitting on the phases boundaries with an important decrease of the corrosion resistance. Besides, the CrNi produces high values of the Ni and Cr release. Slight increment in roughness were observed after toothbrushing and depended on the material but not on the toothpaste used. The increase of the microhardness (residual stresses) provokes a decrease of the corrosion resistance and an increase of the ion release

Dental casting alloys behaviour during power toothbrushing with toothpastes with various abrasivities. Part I: wear behavior

The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni-Cr, Co-Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An electric toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 microg/cm(2)) exhibited the most mass loss, whereas ceramic (282 microg/cm(2)) and Co-Cr (262 microg/cm(2)) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm(3)). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an electric toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant

Factores que alteran la exactitud y precisión en la determinación del ángulo de la guía condilea mediante registros de cera con un articulador semiajustable

El objetivo del estudio fue valorar la il')fluencia del operador, del tipo de articulador y de la programación previa del ángulo de Bennett, en la precisión y exactitud de la determinación del ángulo de guía condílea en un articulador semiajustable mediante registros de cera. Siete odontoestomatólogos programaron la guía condílea de un articulador arcón y uno no arcón, antes y después de situar el ángulo de Bennett, de un voluntario. Un octavo participante realizó una axiografía del voluntario. El valor de guía condílea obtenido con un articulador semiajustable y con registros intraorales plásticos depende en gran medida del operador. El articulador no arcón fue más exacto pero menos preciso que el arcón. La colocación del ángulo de Bennett antes de programar la guía condílea no afectó la exactitud pero si aumentó la precisión

Dental casting alloys behaviour during power toothbrushing with toothpastes with various abrasivities. Part I: wear behavior

The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni-Cr, Co-Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An electric toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 microg/cm(2)) exhibited the most mass loss, whereas ceramic (282 microg/cm(2)) and Co-Cr (262 microg/cm(2)) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm(3)). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an electric toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant

Competències transversals del grau de Farmàcia. Rúbriques

Fruit del treball del professorat del Consell d'estudis de l'ensenyament de Farmàcia s'ha elaborat una fitxa explicativa de cadascuna de les vuit competències transversals del grau de Farmàcia. Per a cada competència es presenten diferents elements; per a cada element diferents objectius ordenats per nivells.Aquest treball forma part del projecte CUBAC-Farmàcia (2011PID-UB/204) (Vicerectorat de Política Docent i Científica, UB - Programa de Millora i Innovació Docent