PA EFDA Board Module 1 2025 Graded A+ Questions and
100% Correct ANswers – (Success Guaranteed!!)
zinc oxide eugenol - This material is obundent
Glass ionomer - 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? - Calcium
hydroxide, copal varnish, zinc phosphate and amalgam
To prevent sensitivity - 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? - Nut
The purpose of a wedge is? - 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? -
Voids in the proximal box
What is attrition? - 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 - Create micropores into
which the sealant will flow to form a mechanical Bond
Which material can be used as a temporary filling material - ZOE
What is a point angle - A point formed by the junction of three walls within a cavity preparation
Which of the following best describes a class 11 restoration - proximal surface of posterior teeth
What structure is part of the attachment apparatus? - Cementum
, Application of a base - 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 - 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 - 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 - Less irritating to the pulp than zinc phosphate. Insulator and reinforcer. Not
as strong as zinc phosphate, poor handling characteristics
incisor - Used for cutting
canine - Used to cut and tear, Protects the jaw joint during side job movement longest tooth, most
stable tooth
Pre-molars - For maxillary, for mandibular I just have two cusps some have three used to grasp tear
pulverize food
Molars - 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 - 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 - Rods that are formed from cells
Dentin - 70% in organic 20% organic and 10% water, formed from cells called ODONTOBLASTS, made
up of Dentinal tubules
100% Correct ANswers – (Success Guaranteed!!)
zinc oxide eugenol - This material is obundent
Glass ionomer - 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? - Calcium
hydroxide, copal varnish, zinc phosphate and amalgam
To prevent sensitivity - 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? - Nut
The purpose of a wedge is? - 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? -
Voids in the proximal box
What is attrition? - 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 - Create micropores into
which the sealant will flow to form a mechanical Bond
Which material can be used as a temporary filling material - ZOE
What is a point angle - A point formed by the junction of three walls within a cavity preparation
Which of the following best describes a class 11 restoration - proximal surface of posterior teeth
What structure is part of the attachment apparatus? - Cementum
, Application of a base - 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 - 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 - 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 - Less irritating to the pulp than zinc phosphate. Insulator and reinforcer. Not
as strong as zinc phosphate, poor handling characteristics
incisor - Used for cutting
canine - Used to cut and tear, Protects the jaw joint during side job movement longest tooth, most
stable tooth
Pre-molars - For maxillary, for mandibular I just have two cusps some have three used to grasp tear
pulverize food
Molars - 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 - 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 - Rods that are formed from cells
Dentin - 70% in organic 20% organic and 10% water, formed from cells called ODONTOBLASTS, made
up of Dentinal tubules
