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1.
Article in Spanish | LILACS | ID: biblio-900302

ABSTRACT

RESUMEN: El traumatismo dentoalveolar incluye un conjunto de lesiones que afectan a los dientes y/o estructuras de soporte a consecuencia de un impacto violento directo o indirecto. Debido a que por lo general comprometen el sector anterior generan cambios físicos, fonéticos, psicológicos y dietarios, que pueden afectar significativamente la calidad de vida de pacientes afectados por este traumatismo. Los protectores bucales son considerados la principal medida para minimizar y/o evitar estos traumatismos. El presente artículo describe el tratamiento y procedimientos para realizar un protector bucal por laminado a presión en un paciente deportista con historia previa de traumatismo dentoalveolar en incisivos centrales superiores.


ABSTRACT: Traumatic dental injuries involve lesions that affect teeth and/or adjacent supporting structures as a consequence of direct or indirect violent impact. Due to As it affects the anterior teeth, in most of the cases, it provokes changes in the physical appearance, altering phonetics, psychology and the diet of the affected subject. These changes may significantly alter the quality of life of patients affected by this type of trauma. Mouthguards are considered the primary appliance for minimizing and/or avoiding dental trauma. The present article describes the treatment and procedures to perform a mouthguard by pressure lamination technique in a patient that who practices sports and with a history of trauma affecting the upper central incisors.


Subject(s)
Humans , Male , Child , Athletic Injuries/prevention & control , Tooth Injuries/prevention & control , Mouth Protectors
2.
Article in English | LILACS | ID: biblio-844733

ABSTRACT

ABSTRACT: Aim: Determine the influence of time of passive evaporation of the solvent in a universal adhesive on the hydraulic conductance and permeability of dentin in an ex vivo human model. Henceforth, 60 healthy non-occluding third molars, indicated for therapeutic extraction/removal, of informed and consented patients aged between 18 and 30 years, were used here in. First, extracted teeth were incorporated into epoxy resin blocks and then dentin disks (1mm +/- 0.1 mm thick) were prepared. Dentin was acid etched with 35% ortho-phosphoric acid for 15 seconds in order to remove the smear layer and obtain permeable dentin. Samples were then randomized and divided into 5 groups (n=12). A Single Bond Universal adhesive layer with different time of passive evaporation of the solvent was then applied: GC=10 seconds, G1=30 seconds, G2=60 seconds, G3=300 seconds and G4=50 minutes. Finally, the flow rate was measured using a diffusion chamber, a model previously proposed by Pashley et al. Results: The obtained hydraulic conductance averages were as follows: GC=0.00052, G1=0.00018, G2=0.00006, G3=0.00005, G4=0.00005 expressed in uL•cm-2•min-1cm•H2O-1. For comparisons between groups, ANOVA and post hoc Tukey (ρ<0.05) tests were applied, resulting in a statistically significant difference between the GC group and all experimental groups (ρ <0.05). An influence of solvent passive evaporation thereby reducing hydraulic conductance in the experimental groups, was detected.


Subject(s)
Adhesives/chemistry , Dentin-Bonding Agents/chemistry , Volatilization , Water/chemistry
3.
JBC j. bras. clin. odontol. integr ; 9(48): 52-58, jan.-mar. 2005. ilus, tab
Article in Portuguese | LILACS, BBO | ID: lil-455233

ABSTRACT

Quando se realiza a eliminação de tecido cariado, seja de forma convencional (fresa) ou com lasers, existe o risco de danificar, acidentalmente, superfícies de dentes adjacentes, o que, hipoteticamente, poderia torná-las mais susceptíveis à formação de cárie. No presente trabalho, nos propusemos a avaliar, in vitro, a resistência à carie da superfície de esmalte dental irradiado por laser de Nd:YAG, aplicado em condições que simulam sua exposição acidental. Foram utilizados 13 terceiros molares recentemente extraídos. Os grupos experimentais foram: G1: controle sadio e controle+cárie; G2: Nd:YAG 0,75, 1, 2 ou 3W/10Hz/3seg., (27, 35, 71 e 106J/cm²); na forma de contato; G3: Nd:YAG mesmos parâmetros do G2 + indução artificial de cárie, por meio do modelo dinâmico de desmineralização e remineralização (DES/RE). A análise da resistência à cárie foi avaliada através do aspecto morfológico superficial em MEV e pela proporção Ca/P, através da espectrometria de raios-X por dispersão de energia - EDX. As micrografias mostraram que o laser de Nd:YAG mudou a morfologia normal dos prismas de esmalte, resultando numa superfície fusionada e resolidificada, que se intensificou em decorrência do aumento da potência. Em função da proporção Ca/P, houve diferenças estatisticamente significantes (Kruskal-Wallis p<0,01) entre os grupos irradiados por Nd:YAG e o controle com cárie, exceto quando utilizados 3W/10Hz/3seg./106J/cm² e, posteriormente, submetido a desafio cariogênico. Os resultados imdicam que a irradiação acidental, com baixas potências do laser de Nd:YAG, não representa riscos à resistência à cárie do esmalte


Subject(s)
Dental Caries Susceptibility , Dental Enamel , In Vitro Techniques , Lasers/therapeutic use , Dental Caries/therapy , Low-Level Light Therapy/methods
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