Fundamental rules of Anterior Aesthetics

1. Arch curvature. Does the curvature of the anteriors blend with that of posteriors when viewed from the incisal edge?
2. Inclination of facial plane of teeth when viewed from the side should be the same as natural teeth on either side. Light should reflect forward not up or down.
3. Midline should be vertical! Perpendicular to inter-ocular plane. (Interpupillory line)
4. Incisal plane. Cuspid to cuspid should be parallel to interpupillory line.
5. Smile should hove positive curvature. (No reverse smile lines!)
6. Visible width of teeth should be close to golden proportion when viewed from midline. 1.6 (central) - 1 (lateral) - .6 (cuspid)
7. Distal half of cuspid should not be visible from the midline.
8. Length to width ratio should be about 75%.
9. Contacts should extend to the tissue. No block triangles!
10. Contacts should be located lingually in the gingivol 1/3 to help narrow the reflective surface of the neck of the tooth.
11. Incisal embrasures become more open the further away from the midline they are.
12. Function. Lateral excursions should be cuspid guided. Centric not high. Anterior disclusion should be smooth and logical.
13. Axial inclination should focus toward midline!
14. Prep design. The preparation shape and the marginal placement effect final color and contusion.
15. Interproximal embrosures need to be open for illumination