Dentures Midterm || All Questions Answered Correctly.
Physically impaired, Disabled, Handicapped correct answers According to World Health
Organization criteria, individuals with no teeth are considered to be...
Resorption of the Residual Ridges correct answers RRR stands for
RRR correct answers a continuous loss of bone and soft tissues after tooth extraction and denture
placement. Will occur more rapidly in areas with thin cortical (compact) bone (labial of maxilla,
lingual of mandible). Loss of vertical bone height during 1st year after extraction: 2-3 mm in
maxilla, 4-5 mm in mandible; After first year and ridge healing: 0.1-0.2 mm annually (Maxilla
4x less than in mandible); Pathogenesis is poorly understood (alveolar remodeling, pressure from
dentures, infection, etc), but it is chronic, progressive and irreversible.
Intaglio surface correct answers that portion of the denture or other restoration surface that has
its contour determined by the impression: the interior or reversal surface of an object.
Cameo surface correct answers the viewable portion of a removable denture prosthesis—the
portion of the surface that extends in an occlusal direction from the border of the denture, and
includes the facial, lingual, and palatal surface; it is the part of the denture base that is usually
polished, and includes the buccal and lingual surface of the teeth.
Adhesion correct answers property of remaining in close proximity, as that resulting from
physical attraction of molecules to a substance, or molecular attraction existing between the
surfaces/bodies in contact.
Cohesion correct answers state of sticking together tightly via attraction
Interfacial surface tension correct answers property of liquids in which the exposed surface tends
to contract to the smallest possible area (like in drops)
Atmospheric pressure correct answers the pressure exerted by the weight of the atmosphere: 14.7
psi at sea level, 4.36 psi at 30,000 feet
Capillary attraction correct answers due to surface tension, causes elevation or depression of the
surface of a liquid in contact with the solid walls of a vessel.
Gravity correct answers can affect both arches
Neuromuscular control correct answers patient's ability to use their musculature to stabilize the
dentures in the oral cavity.
Saliva correct answers Assists in oral hygiene—washing debris from dentures; Lubrication—
makes dentures more compatible with movements of tissues (Glycoproteins facilitate movement
of soft tissues and tongue during speech, mastication, and swallowing); Denture retention--
adhesion; Excess can compromise impressions; Deficit can lead to loss of denture retention;
,Quality: Thin, serous—ideal, Thick, ropy mucous: can lead to negative hydrostatic pressure in
the area anterior to PPS, loss of retention
Extra-oral Assessment correct answers Facial thirds, Midlines, Lip / tooth support and display,
Naso-labial angle, Patient acceptance of existing dentures (retention, stability, esthetics, etc)
Clinical Observations with Edentulism correct answers Loss of sulcus depth and width (ridge
height reduction); Displacement of muscle attachments and frenae toward ridge crest; Loss of
vertical dimension of occlusion; Anterior rotation of mandible, with increase in apparent
prognathism (witch's chin); Reduction in lower face height; Loss of lip display
Intra-oral Observations with Edentulism correct answers Changes in inter-alveolar ridge
relationship (centripetal (move toward center) in maxilla, and centrifugal (move away from
center) in mandible); Presence of alveolar changes—sharp, spiny, uneven ridges; migration of
mental foramina toward ridge crest; Close correlation between the patient's satisfaction with
dentures and the anatomical changes that occur; retromylohyoid ridge on the posterior mandible
resorbs and can cause sore spots
House's Classification Philosophic correct answers ideal patient to treat; reliable follow-up;
interested in their work and will follow through with any suggestions you made for their
acclimatizing to their dentures
House's Classification Indifferent correct answers often tend to be non-compliant regarding
learning to wear and function with their dentures. They will usually just take out a denture that
bothers them and go edentulous
House's Classification Hysterical (skeptical) correct answers do not accept responsibility for their
condition, or follow instructions; question you professional judgement, may cry and believe
you're mistreating them; may believe you have motives as to why you are not accepting
responsibility for their inability to adapt to the dentures.
House's Classification Exacting (critical) correct answers most difficult to treat—diagnose their
own conditions, set conditions that they expect you to meet; denture must fit according to THEIR
definition of "fit", exacting about position of every tooth, often refuse to pay until they are
satisfied with dentures; refuse to accept any responsibility for their situation.
frenulum correct answers a fold of mucous membrane that overlies dense connective tissue
Hamular Notch correct answers Lying between the maxillary tuberosity and the hamulus is this
groove; a key clinical landmark in maxillary denture construction because the maximum
posterior extent of the denture is the vibrating line, which runs bilaterally through 'these'
Mid-palatal Raphe correct answers a line in the middle of the mucosa of the hard palate
, fovea palatini correct answers two depressions that lie bilateral to the midline of the palate, at the
approximate junction between the soft and hard palate. Can be used to identify the posterior
extent of the denture base
Vibrating Line correct answers a very important feature to be located in the construction of the
maxillary complete denture. It can be considered as the junction between the hard and soft
palates and is important because it is the maximum posterior limit to the maxillary denture.
Posterior Palatal Seal correct answers very important in maxillary complete denture fabrication
and must be identified and evaluated. It is the area of compressible tissue located lateral to the
midline and in the posterior third of the hard palate. The distal extent of this area is the vibrating
line, while the anterior border is indistinct
Parotid Gland correct answers guarded by a mucous membrane swelling called the parotid
papilla
retromolar pad area correct answers the most stable area of the mandibular alveolar ridge
because it is an area where there has been no tooth that has weakened the bone in this area; A
triangular area of thick mucosa distal to the last molar, basically on the crest of the ridge.
Extremely important in denture construction from both a denture extension and plane of
occlusion standpoint. Denture base covers all of 'this'. Occlusal plane extends 2/3's up 'this'.
Therefore, teeth are never set higher than this.
lingual frenulum correct answers plays a very important role in the stability of mandibular
denture as it attaches the tongue to the anterior alveolar ridge area and if it is not allowed
freedom of movement it will cause the denture to rise during function
labial vestibule correct answers an area that the flange of the mandibular denture is most
commonly under-reduced during the insertion. The patient will return with a large ulcer and the
complaint that the denture moves up and down when he eats or speaks.
retromylohyoid fossa correct answers plays an important role in the retention of a mandibular
denture by resisting the tendency of the denture to move up in the posterior region when a patient
bites down on the anterior teeth; The most distal extent of the inner surfaces of the mandibular
ridges
The submaxillary caruncles and the lingual tubercle correct answers major areas that become
very sore when the denture flanges are left long in this area
Pterygomandibular Raphe correct answers Extending from the hamulus above to the area of the
retromolar pad below
Masseteric Notch correct answers Just buccal to the crest of the mandibular ridge in the distal-
buccal corner of the arch
