WASHINGTON DENTURIST LICENSING EXAM] – QUESTIONS
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1. According to Washington State law (RCW 18.30), which of the following clinical
procedures falls strictly within the legal scope of practice for a licensed denturist?
A. Making impressions and serving as the primary clinician for the fabrication of a
complete upper and lower denture
B. Preparing an abutment tooth to receive a clasp for a brand-new cast-metal partial denture
C. Placing a permanent mini-dental implant to aid in the retention of an overdenture
D. Performing a surgical gingivectomy to expose clinical crown height prior to partial denture
placement
Under Washington State law (RCW 18.30), a licensed denturist’s scope of practice includes
the making of impressions, jaw relation records, and the fabrication, fitting, and repair of
complete and partial dentures. Denturists are strictly prohibited from performing surgical
procedures on dental tissue, preparing natural teeth, or placing dental implants, which are
tasks reserved for licensed dentists.
2. A patient presents with generalized redness and inflammation across the hard palate
directly beneath an existing maxillary complete denture. The tissue is non-ulcerated but
displays a pebbly, hyperplastic appearance. What is the most likely clinical condition and
its primary etiology?
A. Epulis fissuratum caused by over-extended denture borders in the buccal vestibule
B. Inflammatory papillary hyperplasia caused by poor oral hygiene and overnight denture
wear
C. Angular cheilitis caused by an excessive vertical dimension of occlusion (VDO)
D. Acute pseudomembranous candidiasis caused by a systemic bacterial infection
CORRECT ANSWER: B. Inflammatory papillary hyperplasia caused by poor oral hygiene
and overnight denture wear
, Inflammatory papillary hyperplasia typically presents as a red, pebbly lesion on the hard
palate beneath a maxillary denture. It is heavily associated with continuous, overnight denture
wear and inadequate denture hygiene. Epulis fissuratum manifests as tissue folds in the
vestibules, angular cheilitis occurs at the corners of the mouth due to insufficient VDO, and
candidiasis presents as removable white plaques.
3. During a border molding procedure for a mandibular custom tray, which muscle is
primarily responsible for shaping the distobuccal border of the impression?
A. Temporalis
B. Buccinator
C. Masseter
D. Genioglossus
The masseter muscle, when activated, pushes against the buccinator muscle in the distobuccal
area of the mandibular arch. When a patient closes against resistance during border molding,
the masseter muscle contracts, shaping the distobuccal flange of the custom tray (masseteric
notch area). The genioglossus influences the anterior lingual border, and the temporalis does
not directly border-mold the mandibular denture.
4. A patient returning for a 24-hour post-insertion checkup complains of soreness on the
lingual aspect of the mandibular ridge in the premolar region. Upon visual inspection, you
observe a small localized erythema. Which of the following is the most appropriate clinical
action?
A. Perform a hard chairside reline using self-curing acrylic resin to stabilize the base
B. Relieve the tissue-side denture base in the corresponding area using a vulcanite bur and apply
pressure-indicating paste to verify clearance
C. Instruct the patient to keep the denture out of their mouth for one week and rinse with warm
salt water
D. Increase the vertical dimension of occlusion by adding tooth-colored composite to the
occlusal surfaces
A localized sore spot 24 hours after insertion is a common minor issue typically caused by
high pressure or a slight undercut on the denture base. Applying pressure-indicating paste
(PIP) helps identify the exact contact area, which is then carefully adjusted using a laboratory
acrylic bur. A hard reline is contraindicated and premature, while changing the VDO does not
address localized tissue impingement.
AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS
PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST|
DOWNLOAD INSTANT PDF
1. According to Washington State law (RCW 18.30), which of the following clinical
procedures falls strictly within the legal scope of practice for a licensed denturist?
A. Making impressions and serving as the primary clinician for the fabrication of a
complete upper and lower denture
B. Preparing an abutment tooth to receive a clasp for a brand-new cast-metal partial denture
C. Placing a permanent mini-dental implant to aid in the retention of an overdenture
D. Performing a surgical gingivectomy to expose clinical crown height prior to partial denture
placement
Under Washington State law (RCW 18.30), a licensed denturist’s scope of practice includes
the making of impressions, jaw relation records, and the fabrication, fitting, and repair of
complete and partial dentures. Denturists are strictly prohibited from performing surgical
procedures on dental tissue, preparing natural teeth, or placing dental implants, which are
tasks reserved for licensed dentists.
2. A patient presents with generalized redness and inflammation across the hard palate
directly beneath an existing maxillary complete denture. The tissue is non-ulcerated but
displays a pebbly, hyperplastic appearance. What is the most likely clinical condition and
its primary etiology?
A. Epulis fissuratum caused by over-extended denture borders in the buccal vestibule
B. Inflammatory papillary hyperplasia caused by poor oral hygiene and overnight denture
wear
C. Angular cheilitis caused by an excessive vertical dimension of occlusion (VDO)
D. Acute pseudomembranous candidiasis caused by a systemic bacterial infection
CORRECT ANSWER: B. Inflammatory papillary hyperplasia caused by poor oral hygiene
and overnight denture wear
, Inflammatory papillary hyperplasia typically presents as a red, pebbly lesion on the hard
palate beneath a maxillary denture. It is heavily associated with continuous, overnight denture
wear and inadequate denture hygiene. Epulis fissuratum manifests as tissue folds in the
vestibules, angular cheilitis occurs at the corners of the mouth due to insufficient VDO, and
candidiasis presents as removable white plaques.
3. During a border molding procedure for a mandibular custom tray, which muscle is
primarily responsible for shaping the distobuccal border of the impression?
A. Temporalis
B. Buccinator
C. Masseter
D. Genioglossus
The masseter muscle, when activated, pushes against the buccinator muscle in the distobuccal
area of the mandibular arch. When a patient closes against resistance during border molding,
the masseter muscle contracts, shaping the distobuccal flange of the custom tray (masseteric
notch area). The genioglossus influences the anterior lingual border, and the temporalis does
not directly border-mold the mandibular denture.
4. A patient returning for a 24-hour post-insertion checkup complains of soreness on the
lingual aspect of the mandibular ridge in the premolar region. Upon visual inspection, you
observe a small localized erythema. Which of the following is the most appropriate clinical
action?
A. Perform a hard chairside reline using self-curing acrylic resin to stabilize the base
B. Relieve the tissue-side denture base in the corresponding area using a vulcanite bur and apply
pressure-indicating paste to verify clearance
C. Instruct the patient to keep the denture out of their mouth for one week and rinse with warm
salt water
D. Increase the vertical dimension of occlusion by adding tooth-colored composite to the
occlusal surfaces
A localized sore spot 24 hours after insertion is a common minor issue typically caused by
high pressure or a slight undercut on the denture base. Applying pressure-indicating paste
(PIP) helps identify the exact contact area, which is then carefully adjusted using a laboratory
acrylic bur. A hard reline is contraindicated and premature, while changing the VDO does not
address localized tissue impingement.
