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NDEAB Exam: Questions With Precise Solutions (A+)
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NDEAB Exam: Questions With Precise Solutions (A+)
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NDEAB Exam: Questions With Precise Solutions (A+)Nasopalatine nerve Right Ans - passes through the incisive foramen,
supplies the mucoperiosteum palatal to the maxillary anterior teeth
Greater palatine nerve Right Ans - passes through posterior palatine
foramen, supplies the mucoperiosteum
Anterior superior alveolar nerve Right Ans - supplies the maxillary central,
lateral, and cuspid teeth, along with their periodontal membranes and
gingivae. This nerve also supplies the maxillary sinus
Middle supperior alveolar nerve Right Ans - supplies max premolars, the
mesiobuccal root of max first molar and max sinus
Posterior superior alveolar nerve Right Ans - supplies the other roots of
max molars
Cleft lip or cleft palate Right Ans - may result if there is a disruption in
formation of palate during prenatal development
Polymerization Right Ans - The process by which resin material is changed
from a pliable state into a hardened restoration. This occurs through auto-
curing or light-curing.
Apicoectomy Right Ans - surgical removal of apical portion of root
Aerobes Right Ans - Bacteria that require oxygen to grow
Anaerobes Right Ans - Bacteria that grow in the absence of oxygen and are
destroyed by oxygen
Facultative anaerobes Right Ans - bacteria that can grow with or without
oxygen
Dental varnish Right Ans - 1. seals dentinal tubules
2. Reduces microleakage around a restoration.
3. Acts as a barrier to protect the tooth from highly acidic cements such as zinc
phosphor.
,4 types of elastomeric impression materials Right Ans - Polysulfide,
polyether, silicone, and polysiloxane(polyvinylsiloxane).
11 regions of the head Right Ans - frontal, parietal, occipital, temporal,
orbital, nasal, infraorbital, zygomatic, buccal, oral, and mental.
Spasticity Right Ans - Increased muscle tension that manifests as an
exaggerated stretch reflex.
posteroanterior projection Right Ans - Used to evaluate facial growth and
development, trauma, disease, and development abnormalities. It shows the
frontal and ethmoid sinuses, the orbits, and the nasal cavities.
preimplementation Right Ans - during 1st week
embryonic Right Ans - beginning of 2nd to end of 8th week. most critical
period.
fetal Right Ans - 9th week to birth. body systems develop and mature.
3 distinct periods of prenatal development Right Ans - preimplementation,
embryonic, fetal
protective base Right Ans - protect the pulp before the restoration is placed
insulating base Right Ans - placed in deep cavities to protect tooth from
thermal shock.
sedative base Right Ans - soothes pulp that has been damaged by decay or
has been irritated during the process of removing decay
2 basic x-ray methods Right Ans - direct imaging (sensor) & indirect
imaging (psp)
advantages of digital radiography Right Ans - -Immediate viewing of
images
-less radiation
-no chemicals
,-ability to enhance images
-communication with other dentists
-no more lost films
-remote consultation capability
disadvantages of digital radiography Right Ans - -cost
-converting previous records to digital
-learning the computer software
-thickness and rigidity of sensors
-infection control
2 things intraoral film is made of Right Ans - film base, silver halide crystals
film base Right Ans - Clear Cellulose Acetate, Thin Adhesive Layer
silver halide crystals Right Ans - absorb radiation, A protective layer to
protect the emulsion surface.
latent image Right Ans - The image on the film that is not yet visible
because it has not been processed.
film speed Right Ans - The amount of radiation that is required to produce
a radiograph of standard density.
true Right Ans - True or false: The larger the silver halide crystals, the
faster the film speed?
fastest film speed currently available Right Ans - F-speed
F-speed Right Ans - It reduces patient exposure to radiation by 20-60%
compared to E or D speed film
-fastest available
3 types of x-ray film Right Ans - Intraoral film, extraoral film, and
duplicating film.
When it is placed in the mouth backwards. Right Ans - When does a
"Herringbone" pattern occur on dental film?
, 5 basic sizes of intraoral film Right Ans - Child Size: 0
Anterior: 1
Adult Size: 2
Preformed bitewing: 3 (infrequently used)
Occlusal: 4
2 types of extraoral radiographs Right Ans - panoramic, cephalometric
intensifying screen Right Ans - device that intensifies or increases the
effect of radiation and thus decreases the amount of exposure time needed. It
is coated with phosphor which gives off light when struck by x-radiation.
5 steps of processing film Right Ans - 1. Developing (reduce the silver
halide crystals into black metallic silver)
2. Rinsing (remove developer from film)
3. Fixing. (use an acidic solution to remove unexposed silver halide crystals)
4. Washing (wash the film)
5. Drying
two techniques for intraoral x-rays Right Ans - paralleling and bisecting
5 basic rules of paralleling technique Right Ans - 1. Placement: it must
cover correct teeth to be examined
2. Position: it must be parallel to the long axis of the tooth.
3. Vertical Angulation: Central ray must be directed perpendicular to the
receptor & tooth.
4. Horizontal Angulation: Central ray must be directed through the contact
areas.
5. Central Ray: it must be centered on the receptor.
To ensure an area is not omitted or exposed twice. Right Ans - Why is it
important to have an 'exposure sequence' for receptor placement?
incorrect horizontal angulation Right Ans - results in overlap
elongation, foreshortening Right Ans - 2 vertical angulation errors that can
occur
qualities of an endodontic xray Right Ans - Tooth centered on the image
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