Chapter 1 Hottel EFDA book
what is an anatomical crown - answer portion that extends from the incisal or occl
surface to the CEJ
Clinical crown - answer Visible portion of tooth from gums to incisal or occl surface
furrow - answer concavity from CEJ to furcation
contact area - answer Area of the mesial or distal surface of a tooth that touches the
adjacent tooth in the same arch
purpose of a contact area - answer1. keep food from packing between teeth
2. stabilize the arch
what happens when there is no proximal contact - answer1. Food can become impacted
and result in build up
2. teeth may shift
what is an embrasure - answer Triangular space between teeth
insical/occl
facial/buccal
lingual
gingival
Enamel - answer1. hard, outermost layer of a tooth
2. made up of ameloblasts
3. enamel formation is completed 3 years before eruption in permanent teeth
Dentin - answer1. second layer off tooth, softer
2. made of odontoblasts
3. surrounds the pulp chamber
3 types of dentin - answer1. Primary - before tooth erupts
2.Secondary- forms as tooth ages
3.Reparative/Tertiary- forms rapidly when trauma is induced, reduces the size of the
pulp
cementum - answer1. covers the root of a tooth.
2. formed by cement oblasts
3. no blood supply gets nutrients from periodontal ligament
what is an anatomical crown - answer portion that extends from the incisal or occl
surface to the CEJ
Clinical crown - answer Visible portion of tooth from gums to incisal or occl surface
furrow - answer concavity from CEJ to furcation
contact area - answer Area of the mesial or distal surface of a tooth that touches the
adjacent tooth in the same arch
purpose of a contact area - answer1. keep food from packing between teeth
2. stabilize the arch
what happens when there is no proximal contact - answer1. Food can become impacted
and result in build up
2. teeth may shift
what is an embrasure - answer Triangular space between teeth
insical/occl
facial/buccal
lingual
gingival
Enamel - answer1. hard, outermost layer of a tooth
2. made up of ameloblasts
3. enamel formation is completed 3 years before eruption in permanent teeth
Dentin - answer1. second layer off tooth, softer
2. made of odontoblasts
3. surrounds the pulp chamber
3 types of dentin - answer1. Primary - before tooth erupts
2.Secondary- forms as tooth ages
3.Reparative/Tertiary- forms rapidly when trauma is induced, reduces the size of the
pulp
cementum - answer1. covers the root of a tooth.
2. formed by cement oblasts
3. no blood supply gets nutrients from periodontal ligament
