Iran Dental Board - Prosthodontics study materials
Iran Dental Board - Prosthodontics study resources

Iran Dental Board - Prosthodontics: Esthetic and Digital Prosthodontics

Iran Dental Board - Prosthodontics · Work through your exam, one topic at a time.

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Esthetic and Digital Prosthodontics

Esthetic and digital prosthodontics tests how you translate facial and dental proportions into a predictable restoration using contemporary tools. The board looks for shade logic, minimally invasive design, and safe digital workflows.

Core rules

  • Choose shade by value first, then chroma, then hue; use neutral gray surroundings and daylight-balanced light.
  • Design from the face: midline, incisal edge position, smile line, and buccal corridor should agree with facial landmarks.
  • Preserve enamel: veneers often need 0.3–0.5 mm reduction; avoid full-coverage preparation when additive or partial coverage works.
  • Intraoral scanners need dry, retracted fields and clear scan paths; verify margins and interproximal areas before design.
  • CAD/CAM milling and 3D printing require the same occlusal and marginal checks as conventional work.

Worked example

A patient requests two maxillary central veneers. You select value under neutral light, confirm the incisal edge with a trial smile, prepare 0.4 mm facial enamel with a chamfer, and scan. Reasoning: value dominates perceived color; the trial smile verifies proportion; enamel preservation improves bonding and longevity.

Traps

Selecting shade under operatory halogen light causes metamerism. Overreducing a veneer exposes dentin and weakens bond. Scanning through saliva creates optical errors. Designing from a single tooth ignores facial midline. Skipping a verification try-in can produce a color or contour mismatch.