Gummy Smile Flashcards
(18 cards)
How much gingival display should be visable when a patient smiles
2 mm
How much incisor displays should be visible in repose for male/female?
- 1-2 mm male
- 3-4 mm female
What is the Rule of Thirds?
- Each 1/3 should be equal
- Maxilla lives in the lower 1/3
What is it called with the lower 1/3 > middle 1/3?
Vertical Maxillary Excess
What are the 5 “Core” Questions getting at?
- Face Height
- Lip Length & Lip Mobility
- Gingival Line
- Length of Maxilary Central Incisor
- Can You Feel the CEJ in the Sulcus
How do you mesure Lip Length?
- Measured in repose
- Inferior border of nose to inferior border (wet/dry line) of upper lip
What is the Lip Length for Young Adults for male/female?
- Female = 20-22 mm
- Male = 22-24 mm
- Increases 1 mm per decade over age 40
What is the range for lip mobility?
- 6 - 8 mm
- Could be more or less
What is the average length of a central incisor?
10.5 - 11.5 mm
What is the Width: Length ratio for central incisors?
The ratio of height to width in the maxillary central incisor should be approximately 1.2:1
If this face height is abnormal the cause is most likely…
Vertical Maxillary Excess
If the lip legnth is abnormal, what could be the cause?
Lip Dimension Short or Long…
If the lip mobility is off, what could be the cause?
Lip Hyperactive or Hypoactive
If the gingival line is off, would could be the cause?
Dentoalveolar Extrusion with Wear without Wear, Canted
If the tooth length is abnormal, what could be the cause?
- Microdontia
- Wear
- Altered Passive Eruption
If the CEJ is abnormal, what could be the cause?
Altered Passive Eruption
What is the difference between Normal Eruption and Altered Passive Eruption?
Normal Eruption
- Tooth is short
- Can feel CEJ in sulcus
Altered Passive Eruption
- Tooth is short
- Cannot feel CEJ in sulcus
How much do you move aleolar bone apical to CEJ for esthetic crown lengthening?
- Move alveolar bone 2 - 2.5 mm apical to CEJ
- Gingival crest 3 mm coronal to new bony crest
