Esthetics

Question 1

Three types of smiles per Rubin

Which one should you base esthetic planning on?

Answer 1

1. Commissure smile (Mona Lisa)
2. Social smile (self-portraits)
3. Spontaneous smile (base esthetic planning on this)

Question 2

10 Commandments of Smile Esthetics
1-4?

Answer 2

Dominance of central incisors

1. Smile arc (max incisors in vertical position) - Curved, straight, or inverted. Centrals lower than canine or laterals
2. Ratio/symmetry of centrals (75% w/h)
3. Proportion between anterosuperior teeth (golden ratio 62% not gospel, higher like 67/70 may be preferred)
4. Presence of anterosuperior spaces (close midline diastema at minimum)

Question 3

10 Commandments of Smile Esthetics
5-7

Answer 3

5. Gingival design (Central gingival margin are level or slightly below canine. Lateral are level or below centrals)
6. Gingival exposure (<3 mm is okay, do not intrude centrals, guide tx by etiology)
7. Buccal corridor (not critical for smile esthetics. Intermediate buccal corridor more attractive, avoid wide corridor)

Question 4

10 Commandments of Smile Esthetics
8-10

Answer 4

8. Midline & tooth angulation (>2 mm and any tooth angulation issue must be corrected)
9. Tooth color and anatomical shape (dental bleaching good, correct contacts to get papilla fill, enameloplasty good)
10. Lip volume (lip volume is current standard of beauty)

Question 5

What is tooth width to length ratio on a Chu gauge?

Answer 5

78%

Question 6

What is average lip mobility in full smile?

Who has greater mobility - females or males?

Answer 6

6-8 mm

Females > Males