Glossary of Height of contours
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- height of contour
- how far the crown overhangs the cervical line (only on facial and lingual)
- emergence profile
- the cervial line of the height of contour is FLAT!
- height of contour on maxillary anteriors
- facial-cervial third 1/2 mm
lingual-cervial third 1/2mm
- Where are all facial height of contours?
- in cervial third
- mandibular anterior height of contour
- facial is in cervical third and is less than 1/2 mm
lingual is in cervial third and is less than 1/2 mm
- What happens if Dr. makes crown with an emergence profile that is not flat?
- functions of proximal contacts and embrasures
- 1. prevent food impaction
2. protect peridontium
3. stabilize dental arch
4. allow food to excape the occlusal surface
5. distribute forces
- what is bigger gingival or incisal embrasure?
- always gingival
- describe embrasures as you go from ant to post teeth
- as go to posterior gingival embrasure gets smaller and incisal get larger (but gingival always bigger)
- embrasure of ant teeth
- since proximal contact is in incisal third, there is a huge gingival embrasure and a v. small incisal embrasure
- describe proximal surface to proximal contact
- always flat or concave on all teeth for embrasure
- compare facial and lingual embrasures
- equal or lingual slightly larger
- where are proximal contacts in line with?
- facial cusp
- what tooth has mesial concavity?
- mesial concavity on first premolar needed bc canine is not the same shape
- descibe facial/lingual embrasures from ant to post teeth
- facial embrasures increase and lingual embrasures decrease as go posteriorly
- mandibular anterior proximal contacts
- in incisal third
- what happens if mandibular anterior teeth get too much wear
- insical embrasures disappear
- canine proximal contacts
- mesial PC in incisal third
distal PC in middle third
this causes occlusal embrasures to get larger and gingival to get smaller as come posteriorly
- what happens to embrasure as proximal contacts become more gingival (like in post teeth)
- gingival embrasures get smaller and occlusal embrasures get bigger
- posterior embrasures vs. ant embrasures
- posterior teeth have a smaller facial embrasure bc contacts are more facial and a larger occlual embrasure
- max width of arch
- 1st molar
- what teeth of equal facial and lingual embrasures?
- mandibular incisors
- % of max lateral incisor that should be seen in smile
- how much shorter should max lateral incisor be that central?
- 1 mm
- what gives smile youthful appearance
- incisal embrasure
- why do caries spread rapidly in children?
- thinner enamel and dentin and their dentin is less dense
- describe primary dentition
- thinner enamel and dentin
dentin less dense so whiter teeth
larger pulps and taller pulp horns
longer roots in relation to crown size
roots v. flared
- why do primary teeth have flared roots?
- bc perm tooth bud sits in that space
- primary tooth crown
- more bulbous appearance of crown due to small occlusal table and constricted CEJ. HUGE HEIGHT OF CONTOUR
- primary first molars
- have distinctive mesial facial bulge. looks way different
- what do primary second molars look like?
- clones of permanet first molars
- function of primary teeth
- space maintainers so when first pre molars erupt they hold arch so man. molars can come in
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