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The measurement of cutting forces in full crown preparation with three-dimensional transducer unit / 中华口腔医学杂志
Chinese Journal of Stomatology ; (12): 488-491, 2006.
Artigo em Chinês | WPRIM | ID: wpr-354335
ABSTRACT
<p><b>OBJECTIVE</b>To measure the cutting forces applied by clinicians during preparing full crown and to provide basic data for the training of dentistry in a virtual reality.</p><p><b>METHODS</b>Each of six prosthodontists and six dental students prepared three extracted maxillary premolars. The cutting forces were measured with a three-dimensional transducer unit. Differences in cutting time and forces between groups were analyzed with independent-samples t-test.</p><p><b>RESULTS</b>The cutting forces varied in the range from 0.10 N to 4.90 N. The average cutting force (1.71 N) of four axial surfaces was higher than that (0.45 N) of occlusal surface (including functional cusp inclines) (P < 0.01). The cutting time by prosthodontists was shorter than that by the students (P < 0.05). Moreover, the vertical component of the cutting force was higher than the horizontal one (P < 0.01).</p><p><b>CONCLUSIONS</b>The magnitude of cutting forces could be greatly influenced by the motion direction and tendency of the handpiece. The data on cutting forces might serve as the foundation of cutting simulation algorithm for training in a virtual reality.</p>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Estresse Mecânico / Estudantes de Odontologia / Transdutores / Técnicas In Vitro / Preparo Prostodôntico do Dente / Coroas / Odontólogos / Métodos Limite: Adolescente / Adulto / Criança / Feminino / Humanos / Masculino Idioma: Chinês Revista: Chinese Journal of Stomatology Ano de publicação: 2006 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Estresse Mecânico / Estudantes de Odontologia / Transdutores / Técnicas In Vitro / Preparo Prostodôntico do Dente / Coroas / Odontólogos / Métodos Limite: Adolescente / Adulto / Criança / Feminino / Humanos / Masculino Idioma: Chinês Revista: Chinese Journal of Stomatology Ano de publicação: 2006 Tipo de documento: Artigo