This high-yield revision note on Smile Design & Esthetics: Golden Proportion and Digital Smile Design covers everything examiners typically test under Prosthodontics — structured as quick-reference tables, clinical correlations, mnemonics and previous-year-style high-yield points. It's built for last-mile revision before NEET MDS, INI-CET MDS and INBDE, so you can scan it in minutes instead of re-reading a whole textbook chapter.
| Concept | Detail |
|---|---|
| Golden proportion | Classic ideal width ratio of the anterior teeth viewed from the front = 1.618 : 1 : 0.618 (central incisor : lateral incisor : canine, as visually apparent width) |
| Golden percentage (Snow, more clinically applicable) | Central incisor ≈25%, lateral incisor ≈15%, canine ≈10% of the total visible anterior segment width from a frontal view - considered more realistic than the strict golden proportion |
| Smile line/arc | Ideal: the incisal edges of the maxillary anterior teeth follow the curvature of the lower lip during smiling ("consonant" smile) |
| Digital Smile Design (DSD) | A digital planning workflow using facial/intraoral photographs and video, overlaid with proportional analysis, to create a mock-up/wax-up that guides tooth preparation and provisional fabrication, with patient approval BEFORE definitive treatment |
| Gingival esthetics | The gingival zenith point (most apical point of the gingival margin) is ideally positioned distal to the long axis for centrals and canines, and roughly coincident with the long axis for laterals; gingival display of <2-3mm on smiling is generally considered esthetic (excess display = "gummy smile") |
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