Six Keys of Occlusion

Question 1

How to establish a functional
occlusion, a beautiful smile and an
attractive face?
The goal is to

Answer 1

create a harmonious smile respecting the individual
differences of each patient

Question 2

Six keys of occlusion
These concepts are also valid for (2)

Answer 2

prosthodontics and for the
Invisalign technique

Question 3

Super class I molar

Answer 3

• The distal surface of the permanent upper first molar
  should be in contact with the mesial surface of the
  lower second permanent molar

Question 4

Super class I molar
* The distal surface of the permanent upper first molar
should be in contact with the mesial surface of the
lower second permanent molar
(3)

Answer 4

• This gives the best interdigitation of the premolars
• Class I canine
• Adequate overbite and overjet

Question 5

Angulation (tip)
(2)

Answer 5

• The part of the tooth
  gingival to the crown is
  distal to the part which is
  incisal or occlusal to the
  gingival margin
• This concept is very
  important in esthetic
  dentistry

Question 6

This angulation is incorporated in most

Answer 6

bonded brackets

Question 7

The angulation of the crown…..
…..influences
(5)

Answer 7

• The emergence of the
  teeth
• The position of the
  contact points
• The creation of black
  triangles
• Gingival contours
• The closure of
  diastemas

Question 8

Each tooth has it’s own
inclination (torque)
…. torque influences
(6)

Answer 8

• Lip support
• Gingival contours
• The size of the arches
• The shape of the arches
• Emergence profile of the teeth
• The smile line

Question 9

Analysis of the result
(5)

Answer 9

• Good arch form
• Angulation corrected
• Inclination corrected
• Incisal edges well positioned
• Good emergence profiles of the
  teeth

Question 10

Rotations

Answer 10

• There should not be
  rotations-even
  iatrogenic

Question 11

No interdental Spaces

Answer 11

• Mesiodistally, all
  the teeth must
  be in contact

Question 12

Curve of Spee
* The Curve of Spee should be almost —. The average Curve of Spee
should be – mm.

Answer 12

flat
1

Question 13

Curve of Spee
(3)

Answer 13

• It is one of the occlusal factors most neglected in diagnosis
• A deep curve of Spee is generally the sign of a major malocclusion
• Orthodontic treatment and prosthetic rehabilitations are greatly
  influenced by the severity of the Curve of Spee

Question 14

Optimal Interdigiation
(3) are imporant goals in all orthodontic treatments

Answer 14

• Maximal interdigitation ,
  a functional occlusion with cuspid guidance ,
  respecting the dictates of the temporo-mandibular joints,

Question 15

Optimal Interdigiation
* Form follows function:

Answer 15

a well balanced functional occlusion is generally
very esthetic

Question 16

Contact points marginal Ridges
* Points or surface contacts have a great influence on
An example is

Answer 16

the morphology of the gingiva.
comprimised interproximal papillae

Question 17

Teeth are aligned respecting the

Answer 17

gingival line
(especiallly in patients who have a gummy smile)

Question 18

• Six keys are a fundamental concept to an — from an orthodontic perspective.

Answer 18

esthetic and functional
occlusion

Question 19

• They are based on the fact that patients present a (2) facial patterns

Answer 19

normocephalic and
orthognathic

Question 20

• It also applies to normal (2)

Answer 20

tooth size and numbers