Topic 96 of 96 in the MU Plovdiv syllabus for Preclinical Prosthetic Dentistry (Dental Medicine, Year 2). The free AceMed note covers it in 8 sections, about 266 words (6 min of reading), with 41 flashcards.
In this note
Introduction
Workflow
Materials for CAD/CAM bridges
Design points
Advantages and limits
Materials
Comparison with conventional dentures
Limits
Introduction
CAD/CAM technology lets a whole bridge framework be designed on screen and milled or printed by machine. It is used for crowns, bridges, implant abutments and partial-denture frameworks, from single units to long-span bridges.
Design points
Connector size matters even more than in metal: ceramic frameworks need much taller and wider connectors. The software warns when the minimum is not met.
Pontic and retainer support: frameworks give even support to the veneer, with no unsupported porcelain.
Preparations: rounded, smooth, with clear margins the scanner can read; no sharp edges the burs can't follow.
Cement space is set digitally.
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