Geometric design method for occlusal outlines of complex class I and class II inlay cavities

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Abstract

The purpose of this study was to establish a geometric design method for the occlusal outlines of complex inlay cavities as a continuation study of a previous design method for simple class I inlay cavity. A method for extending the occlusal outline to the buccal or lingual groove and to three preparation types of the proximal portions of class II inlay cavities -namely, straight line preparation, sweeping curve preparation, and reverse curve preparation- was investigated. To ensure the smoothness of the occlusal outline, a Bézier curve was introduced in the design. A minimal number of control points for the curve was applied to define each preparation type. The design method was experimentally applied to mandibular and maxillary first molars. Smooth outlines of the complex inlay cavities in the molars with tool accessibility throughout the cavities were achievable by using the present method.

Original languageEnglish
Pages (from-to)648-654
Number of pages7
JournalDental materials journal
Volume30
Issue number5
DOIs
Publication statusPublished - 2011

Keywords

  • Bézier curve
  • CAD/CAM
  • Cavity preparation
  • Complex cavity
  • Geometric design

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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