W3 Occlusion relationship Flashcards
What is the horizontal alignment controlled by?
The tongue, lips and cheeks, along with the cuspal relationship with the opposing teeth
Define the Curve of Spee
The curve of the buccal cusp tips of posterior teeth from an anterior-posterior direction

Define the Curve of Wilson
The curve of the posterior teeth from a left to right direction

Define Centric Relation
The relationship of the Maxilla and Mandible when jaws are closed together.
To find tilt the head back as far as possible and close teeth gently together
Define Centric Occlusion
The relationship of the teeth within the jaws that allows the most contact between teeth
To find tilt the head forward
Define contact points
Where the occlusal surface of one tooth touches the occlusal portion of the opposing teeth. The contact points create what we know as the occlusion
Define Flush terminal plane
Distal surfaces of both Maxillary and mandibular molars are even

Define Mesial Step
Maxillary molar is situated more distally then the Mandibular molar

Define Distal Step
Maxillary molar is more mesial than the Mandibular molar

Define Normal Molar Occlusion relationship
Mesiobuccal cusp of maxillary first molar occludes with the mesiobuccal groove of mandibular first molar
Describe Cainine/premolar relationship in normal occlusion
Maxillary canine occludes with the distal half of the half of the Mandibular canine and mesial half of the mandibular first premolar
Describe Incisor relationship in Normal Occlusion
Lower incisors occlude below or at the cingulum of upper incisors
Describe Class II occlusion in the Molar relationship
(Distal step) Mesiobuccal groove of mandibular first molar is positioned distally to the mesio buccal cusp of Maxillary first molar

What is Class II Division 1?
Is when the Maxillary anterior teeth are proclined and a large overjet is present
What is Class II Division 2?
Is where the maxillary anterior teeth are placed lingually and a deep overbit exists
Define Class III occlusion of the Molar relationship
Mesiobuccal groove of Mandibular first molar is positioned mesially to the mesiobuccal cusp of Maxillary first molar

Describe the Incisor relationship in Class III occlusion
- Cross bite
- Edge to edge
Define Class I Malocclusion in Molar/Canine relationship
Similar to normal occlusion. Mal-relationships between other individual or groups of teeth

Describe the Incisor relationship in Class I Malocclusion
May be openbite, end to end bit, over bite
Describe Overjet
Distance between the labial surface of the mandibular incisors and the incisal edge of the Maxillary incisors

Horizontal relationship
Describe Overbite
The amount of overlap of the mandibular teeth by the Maxillary teeth

Vertical relationship
What 3 malocclusion are Transverse Relationships?
Cross bite Scissorbite Midlines
Define cross bite
Can be anterior or posterior. Occlude with tooth in opposing arch in the opposite relation to normal

Define Scissor bite
When the mouth if closed the molars miss each other and overlap with no contact



