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EFDA I Midterm Review! Questions and Answers 100% Solved
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EFDA I Midterm Review!
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EFDA I Midterm Review!Insulators - answer Also referred to as bases. Insulate the pulp from thermal expansion.
Examples are ZOE, Zinc Phosphate, and Zinc Poly acrylic
Reasons for Bases and Liners - answer To protect the pulp, aid in its recovery, or both.
Inflammation of the Pulp can be caused by the following - answer1. Caries
2. Traumatic Occlusion
3. Effect of Cutting Burs
4. Desiccation
5. Condensation Pressure
6. Chemical Irritation from Restorative Materials.
7. Temperature Changes
8. Dimensional Changes
9. Lack of Marginal Seal
Glass Ionomers - answer Hybrid of silicate and polycarboxylate cement. Bonds directly
to enamel, dentin, cementum, and stainless steel. Releases fluoride. Ex: Viterbo’d
Liners - answerThin layers of material used to protect the pulp, aid in its recovery, or
both.
IRM
(Intermediate Restorative Material) - answerIRM material is zinc oxide Eugenol with
polymer reinforcement.
Fermit - answerMost common for inlay/onlay preps. Will stick to adjacent teeth. You can
roll into a ball, put into prep, have patient bite down. You want the material to stick to the
adjacent teeth but not to the papilla so always make sure to check and clean
interproximal excess.
Cavit - answerTemporary filling material that hermetically deals in medicaments while
sealing out saliva. Most common in Endo (Root Canal) procedures.
Acrylic - answerBis-Acryl temporary crown and bridge material. Ideal for all temporary
restorations.
Examples of Temp Materials - answerIRM/ZOE
Fermit
EZ Temp
Cavit
,Acrylic
If you see charting with a right angle and the number 1 inside, what numbering system
is this known as? - answerPalmer Notation
When counting the teeth starting on the upper right with #1 and you go around to upper
left #16, then down to lower left #17, and around to lower right #32, this is what
numbering system? - answerUniversal
Types of Dentin - answerPrimary
Secondary
Tertiary
Bases - answerUsed in thicker amounts than liners to provide a mechanical, chemical,
and thermal protection to the pulp.
Sealers - answerAlso known as liners. Seal off openings at Dentinal tubules to prevent
pulp from getting irritated any further. Ex: Cavity Varnish which is only used under
amalgam)
Zinc Phosphate - answerCan be used for cementation, insulating base, also considered
an insulator and reinforcer.
Pulpitis - answerInflammation of the pulp. It can be irreversible if caught early, but root
canal treatment may be needed if too severe.
Obtundants - answerReduce the irritability of the pulp. Ex: ZOE (Zinc Oxide Eugenol).
Transverse Ridge - answerThe Union of two triangular ridges.
Triangular Ridge - answerRidges that descend from the cusp tips into the central part of
occlusal surfaces. Found of molar and premolars.
Marginal Ridge - answerRounded borders of the enamel that form the mesial and distal
margins.
Ridge - answerA linear elevation on the surface of the tooth, named according to its
location.
Cingulum - answerLingual ridge at the base of an anterior tooth. Makes up the bulk of
the cervical 1/3 of the lingual surface.
Cusp - answerElevation in the crown of the tooth, making a division in the occlusal
surface.
, Anatomic Crown - answerDivision of crown and tooth marked by the CEJ subgingivally
seen.
Clinical Crown - answerPortion of crown visible to the eye upon clinical examination.
The part of the tooth you see when you look in the mouth.
Periodontium - answerTissues that surround and support the teeth. Consists of
cementum, PDL, gingiva, and Alveolar process.
Cementum - answerCovers the roots of the teeth in a thin layer. Light yellow in color.
Slightly lighter than dentin. Joins the enamel at the cervix of the tooth - CEJ.
Primary, Secondary & Tertiary - answer3 types of dentin. There are 3 types of dentin
because dentin has the ability. For constant growth and repair.
Enamel, Cementum, Dentin, & Pulp - answerThe 4 tissues of the teeth.
Primary Dentition - answer20 teeth total-
10 upper (A thru J)
10 lower (K thru T)
Height of Contour - answerProtects the gingiva by directing food away from the gingiva.
Height of Contour on the lingual of anterior teeth - answerLocated Cervical 1/3
Contacts for maxillary 1st, 2nd, and 3rd molars - answerLocated middle 1/3 of the crown
Oblique Ridge - answerThe ridge crossing the occlusal surface of only maxillary molars
in an oblique direction. It is formed by two triangular ridges extending from the DB to the
ML cusp.
Embrasure - answerThe spaces adjacent to and surrounding the contact of the teeth in
the same arch. They are V shaped.
Contact Areas - answerServe two purposes: to keep food from packing between the
teeth and to help stabilize the dental arches by combining the anchorage of all teeth in
either arch when they are in contact with each other.
Enamel - answerHardest tissue in the body and is very brittle.
Dentin - answerThe bulk of the tooth is made up of Dentin which is the second hardest
tissue in the body. Dentin is darker than enamel.
Dental Pulp - answerProvides the developmental, protective and sensory mechanism of
the tooth and the nutrients and metabolic processes necessary to sustain its life.
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