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EFDA board exam 1 Questions and Answers 100% Solved
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Exam of 5 pages for the course EFDA at EFDA (EFDA board exam 1)
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EFDA board exam 1zinc oxide eugenol - answer This material is obtundent
Glass ionomer - answer Releases fluoride, can be used as a liner, base, cement and
final restoration. Chemically bonds directly to enamel, Dentin, cementum, and stainless
steel
What is the correct placement of material for restoring a deep amalgam restoration? -
answer Calcium hydroxide, copal varnish, zinc phosphate and amalgam
To prevent sensitivity - answer Avoid desiccation of the dentin
What part of the matrix retainer is a box shaped devise at the lower end of the retainer
that has an opening for the threaded spindle to move in and out? – answer Nut
The purpose of a wedge is? - answer To adapt the band to the cervical region of the
tooth and endure teeth don't bond together
What could result if a matrix band is placed to snug around a tooth with a class to
preparation? - answer Voids in the proximal box
What is attrition? - answer The gradual loss of tooth structure along the biting surface
due to a Occlusal wear
The purpose of acid etching enamel before placing a sealant resin is to - answer Create
micropores into which the sealant will flow to form a mechanical Bond
Which material can be used as a temporary filling material - answer ZOE
What is a point angle - answer A point formed by the junction of three walls within a
cavity preparation
Which of the following best describes a class 11 restoration - answer proximal surface
of posterior teeth
What structure is part of the attachment apparatus? - answer Cementum
Application of a base - answer The material is a putty like consistency. The entire pulpal
floor is covered with a base to thickness of 1 to 2 mm. Make sure base is not placed on
any margins cavity walls undercuts or retentive groves.
, zinc oxide eugenol - answer Soothe pain for or irritated Pulp obtundent, Insulator and
reinforcer, cannot be used with composite resin's because it interferes with setting
reaction, not as strong as other bases
Zinc phosphate cement - answer It is strong when used as a liner under amalgam can
prevent tooth from looking gray, insulator and reinforcer. Cannot be directly against the
pulp without a varnish or liner because it is chemically irritating to the pulp due to acid it
produces heat, mix on a glass slab
Zinc poly acrylic cement - answerless irritating to the pulp than zinc phosphate. Insulator
and reinforcer. Not as strong as zinc phosphate, poor handling characteristics
incisor - answer Used for cutting
canine - answer Used to cut and tear, Protects the jaw joint during side job movement
longest tooth, most stable tooth
Pre-molars - answer For maxillary, for mandibular I just have two cusps some have
three used to grasp tear pulverize food
Molars - answer Four or five costs, vary in size shape and number of routes based on
location in the mouth function chew or grind food
enamel properties - answer Enamel Has no nerve supply non-vital and therefore not a
renewable tissue, hardest mineral tissue in the body and very brittle, produced by
enamel blasts, The chemical composition is 95% in organic and 5% organic matter and
water, dance memorization gives enamel the ability to resist the where the crown of the
tooth is subject to
Ameloblasts - answer Rods that are formed from cells
Dentin - answer70% in organic 20% organic and 10% water, formed from cells called
ODONTOBLASTS, made up of Dentinal tubules
Odontoblasts - answer Live in the pulp chamber and extend through the Dentin tubules
Cementum - answer Hard tissue that covers the an anatomical route, Attached of the
tooth to the alveolar bone through the periodontal ligament's
Periodontium - answer Consists of two parts: attached apparatus ( what holds the tooth
in socket) and the gingival unit
Gingival unit - answer Interdental papilla, attached gingiva, alveolar mucosa
Cusp of Carabelli - answer Only on the maxillary first molar m
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