SciELO - Scientific Electronic Library Online

vol.14 issue1Microhardness of composite resins: effect of photocuring units and polymerization periods in different depthsOral manifestations in HIV - infected patients in a Brazilian population author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Pesquisa Odontológica Brasileira

Print version ISSN 1517-7491


ALENCAR, José Freire de; ZANETTI, Artêmio Luiz; NOVELLI, Moacyr D.  and  COSTA, Bruno. Study of the viability of the direct preparation of lingual rest seats in maxillary central incisors. Pesqui. Odontol. Bras. [online]. 2000, vol.14, n.1, pp.71-78. ISSN 1517-7491.

The present research evaluated the viability of the direct preparation of lingual rest seats in maxillary central incisors. Ten completely sound specimens were embedded in acrylic resin supports and distributed among five specialists who prepared the rest seats. The coronary portion of the teeth was then cut using a previously made incisal index as guide. The preparation was characterized by angular and linear measurements that enabled a comparative analysis between the original outline of the tooth and its respective prepared model, while permitting the determination of dentinal exposure. The observations were undertaken in digitized images of these outlines utilizing a specific computer program. From the fifty models prepared under well-established criteria, thirty-three showed perforation of the enamel. Conclusively, the maxillary central incisor may not be indicated to receive a directly prepared lingual rest seat.

Keywords : Denture; partial; removable; Image processing; computer assisted.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License