NJXDG EXAM STUDY GUIDE
2026/2027 ACCURATE QUESTIONS
WITH CORRECT DETAILED ANSWERS
|| 100% GUARANTEED PASS
<NEWEST VERSION>
1. Applying topical fluoride gel or foam (efda) - ANSWER ✔ Selecting the
tray
1) Select a disposable tray that is of the appropriate size for the patient's
mouth. The tray must be long and sufficiently deep to cover all
erupted teeth completely without extending beyond the distal surface
of the most posterior tooth. Trays are available in sizes to fit primary,
mixed, and adult dentition. If the patient's mouth can accommodate it,
you may use a double-arch tray. This saves time by treating both
arches at the same time. Remember, trays are discarded after a single
use & if you try a tray in the mouth but do not use it that tray must be
discarded.
Preparing the teeth
2) Check to see whether calculus is present; if it is not, no preparation is
required. Fluoride diffuses easily through the acquired pellicle and bacterial
plaque.
3) If calculus is present, request that the dentist or dental hygienist remove it.
The presence of plaque will not affect the uptake of fluoride.
Applying the topical fluoride
4) Seat the patient in an upright position and explain the procedure. Having
the pt upright prevents gel from going into the throat.
, 5) Instruct the pt not to swallow the fluoride.
6) Select the appropriate tray, and load it with a minimal amount of fluoride,
following guidelines according to the patient's age.
7) Dry the teeth using air from the air water syringe. For fluoride to be
maximally effective, the teeth must be dry when the fluoride is applied.
8) Insert the tray, and place cotton rolls between the arches. Ask the patient
to bite up and down gently on the cotton rolls, to squeeze the fluoride over
all tooth surfaces.
9) promptly place the saliva ejector, and tilt the patient's head forward.
10) Set the timer for the appropriate amount of time in accordance with the
manufacturer's instructions. During this time, do not leave the patient
unattended.
11) On comp
2. Impression trays - ANSWER ✔ Used to hold impression material within the
mouth. They must be sufficiently rigid to:
1) carry the impression material into oral cavity,
2) hold material close to teeth,
3) avoid breaking during removal,
4) prevent warping the completed impression
3. Types of impression trays - ANSWER ✔ Quadrant trays
- cover half of an arch
Section trays
- used to cover the anterior portion of the arch
Full-arch trays
- cover the entire arch
4. Impression tray characteristics - ANSWER ✔ Smooth
, - there is no mechanical lock, so the interior of the tray is
painted or sprayed w an adhesive to hold the impression
material securely in the tray.
Perforated
- the impression material oozes through the holes of the tray,
creating a mechanical lock to hold the material in place.
5. Correct sizing of impression trays accomplishes: - ANSWER ✔ - is
comfortable for the pt
- extends slightly beyond the facial surfaces of the teeth
- extends approximately 2-3 mm beyond the third molar,
retromolar, or tuberosity area of the arch
- is sufficiently deep to allow 2-3 mm of material between the
tray and the incisal or occlusal edges of the teeth
6. Adaptation to impression tray - ANSWER ✔ If necessary, the depth or
length of the tray can be extended by adding utility wax to the border of the
tray.
This may be necessary if tray does not completely cover posterior teeth.
For pt w an unusually high palate, softened utility wax can be added to the
palate area of the impression tray.
7. Cavity liners - ANSWER ✔ A thin layer of flowable material placed in the
most excavated area of the dentin layer for a therapeutic effect. This layer
protects the pulpal tissue from irritation caused by physical, mechanical,
chemical, and biologic elements.
, Examples are calcium hydroxide and glass ionomer.
8. Calcium hydroxide - ANSWER ✔ One of the most frequently selected
cavity liners. Examples include Dycal, VLC Dycal, and Life.
- It protects the pulp from chemical irritation through its sealing
abilities
- It stimulates the production of reparative and secondary dentin
- It is used for pulp capping of pulpal exposures and near
exposure.
- It is compatible w all types of restorative materials.
9. Glass ionomer - ANSWER ✔ Resin-modified glass ionomer liners are
indicated to form a strong bond to dentin, sealing the restoration to reduce
microleakage and helping to reduce post op sensitivity. Examples include
Vitrebond, Ketac bond, and Fuji lining.
Liners are supplied either as a two-paste system (base and catalyst) or as a
light-cured material. The material is prepared and placed w the use of a
Dycal applicator. The liner is placed in the deepest dentin surface of the
preparation. This material is not to be placed on enamel or in retentive
grooves of the prep.
10.Cavity sealers - ANSWER ✔ Applied in a thin film that provides a
protective layer within the prepared cavity. Examples are varnishes and
desensitizer.
11.Varnish - ANSWER ✔ A type of sealer that consists of one or more natural
resins dissolved in an organic solvent. Varnish is placed within the entire
preparation. Examples include Copalite, Plastodent, and Barrier.
2026/2027 ACCURATE QUESTIONS
WITH CORRECT DETAILED ANSWERS
|| 100% GUARANTEED PASS
<NEWEST VERSION>
1. Applying topical fluoride gel or foam (efda) - ANSWER ✔ Selecting the
tray
1) Select a disposable tray that is of the appropriate size for the patient's
mouth. The tray must be long and sufficiently deep to cover all
erupted teeth completely without extending beyond the distal surface
of the most posterior tooth. Trays are available in sizes to fit primary,
mixed, and adult dentition. If the patient's mouth can accommodate it,
you may use a double-arch tray. This saves time by treating both
arches at the same time. Remember, trays are discarded after a single
use & if you try a tray in the mouth but do not use it that tray must be
discarded.
Preparing the teeth
2) Check to see whether calculus is present; if it is not, no preparation is
required. Fluoride diffuses easily through the acquired pellicle and bacterial
plaque.
3) If calculus is present, request that the dentist or dental hygienist remove it.
The presence of plaque will not affect the uptake of fluoride.
Applying the topical fluoride
4) Seat the patient in an upright position and explain the procedure. Having
the pt upright prevents gel from going into the throat.
, 5) Instruct the pt not to swallow the fluoride.
6) Select the appropriate tray, and load it with a minimal amount of fluoride,
following guidelines according to the patient's age.
7) Dry the teeth using air from the air water syringe. For fluoride to be
maximally effective, the teeth must be dry when the fluoride is applied.
8) Insert the tray, and place cotton rolls between the arches. Ask the patient
to bite up and down gently on the cotton rolls, to squeeze the fluoride over
all tooth surfaces.
9) promptly place the saliva ejector, and tilt the patient's head forward.
10) Set the timer for the appropriate amount of time in accordance with the
manufacturer's instructions. During this time, do not leave the patient
unattended.
11) On comp
2. Impression trays - ANSWER ✔ Used to hold impression material within the
mouth. They must be sufficiently rigid to:
1) carry the impression material into oral cavity,
2) hold material close to teeth,
3) avoid breaking during removal,
4) prevent warping the completed impression
3. Types of impression trays - ANSWER ✔ Quadrant trays
- cover half of an arch
Section trays
- used to cover the anterior portion of the arch
Full-arch trays
- cover the entire arch
4. Impression tray characteristics - ANSWER ✔ Smooth
, - there is no mechanical lock, so the interior of the tray is
painted or sprayed w an adhesive to hold the impression
material securely in the tray.
Perforated
- the impression material oozes through the holes of the tray,
creating a mechanical lock to hold the material in place.
5. Correct sizing of impression trays accomplishes: - ANSWER ✔ - is
comfortable for the pt
- extends slightly beyond the facial surfaces of the teeth
- extends approximately 2-3 mm beyond the third molar,
retromolar, or tuberosity area of the arch
- is sufficiently deep to allow 2-3 mm of material between the
tray and the incisal or occlusal edges of the teeth
6. Adaptation to impression tray - ANSWER ✔ If necessary, the depth or
length of the tray can be extended by adding utility wax to the border of the
tray.
This may be necessary if tray does not completely cover posterior teeth.
For pt w an unusually high palate, softened utility wax can be added to the
palate area of the impression tray.
7. Cavity liners - ANSWER ✔ A thin layer of flowable material placed in the
most excavated area of the dentin layer for a therapeutic effect. This layer
protects the pulpal tissue from irritation caused by physical, mechanical,
chemical, and biologic elements.
, Examples are calcium hydroxide and glass ionomer.
8. Calcium hydroxide - ANSWER ✔ One of the most frequently selected
cavity liners. Examples include Dycal, VLC Dycal, and Life.
- It protects the pulp from chemical irritation through its sealing
abilities
- It stimulates the production of reparative and secondary dentin
- It is used for pulp capping of pulpal exposures and near
exposure.
- It is compatible w all types of restorative materials.
9. Glass ionomer - ANSWER ✔ Resin-modified glass ionomer liners are
indicated to form a strong bond to dentin, sealing the restoration to reduce
microleakage and helping to reduce post op sensitivity. Examples include
Vitrebond, Ketac bond, and Fuji lining.
Liners are supplied either as a two-paste system (base and catalyst) or as a
light-cured material. The material is prepared and placed w the use of a
Dycal applicator. The liner is placed in the deepest dentin surface of the
preparation. This material is not to be placed on enamel or in retentive
grooves of the prep.
10.Cavity sealers - ANSWER ✔ Applied in a thin film that provides a
protective layer within the prepared cavity. Examples are varnishes and
desensitizer.
11.Varnish - ANSWER ✔ A type of sealer that consists of one or more natural
resins dissolved in an organic solvent. Varnish is placed within the entire
preparation. Examples include Copalite, Plastodent, and Barrier.
