Function and Esthetics/Direct Veneers Flashcards
When do you get a lisp?
When there’s too much or too little space.
When is it more common to get a lisp?
When there’s too LITTLE space.
How to tell if a person has a horizontal or vertical range of motion.
Make the patient count thru the 60’s and see if the mandible moves vertically or horizontally.
Which envelopes are harder to treat and why?
Horizontal
Because there’s more stress on the incisal edges, potentially fracturing or dislodging restorations.
Forces from the tongue equals that between the lips and cheeks.
Neutral zone.
Muscle that’s a continuous band from left to right.
Buccinator
If this muscle is too short in length, causes too much stress on the teeth.
Buccinator
The result of teeth that are LARGER than the neutral zone can tolerate.
Crowded dentitions
Ways to change the neutral zone.
1) Eliminate noxious habits
2) Myofunctional Therapy
3) Reduce tongue size
4) Lengthen the buccinator m.
What causes this?
1) Debonding
2) Fracture
3) Lingual movement of the tooth, with wear of the opposing tooth.
When buccinator muscle puts pressure on the veneer bc the veneer is overcontoured.
An overcontoured veneer can cause this movement of the tooth.
Lingual movement and wear of the opposing tooth.
Lip and tooth relation during fricative sounds.
Lip and tooth should passively contact.
Teeth relation during sibilant sounds.
Just shy of contact.
