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Título: Estudo clínico da influência da força de mordida e do padrão facial na resistência à fratura de diferentes tipos de coroas de cerâmicas
Palavras-chave: Força de mordida;Face;Cerâmicas
Data do documento: 25-Jan-2013
Resumo: The dental ceramics used for making indirect aesthetic restorations can be affected by cracks or fractures during lifetime in the oral environment. This study aims to evaluate the influence of sociodemographic and facial pattern in maximum bite force and consequently the incidence of fractured crowns partial or full ceramic. Data were collected on sociodemographic characteristics and clinical variables from the reading of dental records; facial pattern of the sample from the cephalometric x-ray; values of the maximum bite force were measured from the compression of the sensor FLEXIFORCE EFL (Tekscan, Boston, USA) positioned on the first molar. The statistical non-parametric Mann-Whitney test was applied and the results were tabulated. From the 25 study participants, 16 were females and 9 were males. The age of participants ranged from 30 to 60 years old or more, whereas 15 (60%) were between 30 to 49 years old and 10 (40%) presented with 50 or more years old, with a mean age of 48.92 ± 9 years old. The group had an average maximum bite force of 213N ± 84N. Men showed higher maximum bite force when compared to women (p = 0.05). Males had higher maximum bite force. It was not able to determine the influence of age and facial pattern in the magnitude of maximum bite force. The study found a higher incidence of fractures in male subjects, in subjects aged 30 to 49 years and patients with facial pattern brachycephalic, with different values of maximum bite force.
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