Overview Flashcards
What are the characteristics of the partial edentulous patient population
increasing
patients are keeping teeth longer
71.5% of 65-74 year old patients are partially edentulous
By the year 2030, 26% of the US population is expected to be >65 years old, what is the trend of their life style
focusing on maintaining an active and productive life; oral health is expected to be more highly sought after, especially partially edentulous care
What is the Kennedy Class of a bilateral edentulous area located posterior to the remaining natural teeth
class I
What is the Kennedy class of an unilateral edentulous area located posterior to the remaining natural teeth
class II
What is the Kennedy class of an unilateral edentulous area with natural teeth remaining both anterior and posterior to it
class III
What is the Kennedy class of a single, but bilateral edentulous area located anterior to the remaining natural teeth
class IV
What is the first Applegate Rule
classification should follow, rather than precede any extractions of teeth that might alter the original classification
What is the second Applegate rule
if a third molar is missing and not to be replaces, it is not considered in the classification
What is the third Applegate rule
if a third molar is present and is to be used as an abutment, it is considered in the classification
What is the fourth Applegate rule
If a second molar is missing and is not to be replaced, it is not considered in the classification
What is the fifth Applegate rule
the most posterior edentulous area always determines the classification
What is the sixth Applegate rule
edentulous areas other than those determining the classification are referred to as modifications and are designated by their number
What is the seventh Applegate rule
The extent of the modification is not considered, only the number of additional edentulous areas
What is the eighth Applegate rule
There can be no modification areas in class IV arches
This connects the parts of an RPD located on one side of the arch with those on the opposite side
major connector
What are the maxillary major connectors
anterior-posterior palatal strap single palatal strap modified full palatal complete palatal coverage U-shaped or horseshoe
This is indicated when there is ≤ 6 teeth, shallow vault; very small mouth or flat or flabby ridges, when all posterior teeth are to be replaced bilaterally
full palatal coverage
This is a wide palatal strap; indicated for distal extension when support of palate needed; but there is desire to not cover the rugae area
modified full palatal coverage
This is the least rigid maxillary connector and may be needed to avoid torus palitinus, unusual vault shape
U-shpaed or horseshoe shaped
What are the mandibular major connectors
lingual bar
lingual plate
labial bar; swinglock
This mandibular connector has the highest patient acceptance
lingual bar
What is the functional depth the lingual vestibule needed for the lingual bar
7-8mm
What are the measurements of the lingual bar
4mm in height
3-4mm from free gingival margin
When is the lingual plate indicated (3)
when the lingual vestibule is <7mm
may be used when additional loss of teeth is anticipated
may be used when lingual tori are present
This is sometimes used with a lingual plate
swinglock; hinged continuous labial bar
When is the swing lock indicated (3)
missing key abutments
unfavorable tooth contours
labial inclination of teeth
This is the most rigid maxillary major connector, may be used to circumvent tori, or for a Kennedy class IV
anterior-posterior palatal strap
What are the dimensions of the anterior-posteiror palatal strap
anterior strap should be no further anterior than the most anterior rests, following the valleys of the rugae and runs perpendicular to the mid palatine suture
posterior strap should be as far posterior as possible but remain anterior to the soft palatal or vibrating line
This maxillary major connector is indicated primarily for Kennedy III of which the width is a wide as the edentulous space, the anterior border should be posterior to rugae area
single palatal strap
This maxillary major connector provides the most rigidity and support but also has the most soft tissue coverage, may alter taste and tactile sensation, phonetic problems
complete palatal coverage
This mandibular major connector may be used when depth on the vestibule exceeded 7-8mm; simplest, high patient acceptance, half pear shaped, 4mm in height
lingual bar
This mandibular major connector is indicated when the vestibule is less than 7mm, may be used when additional loss of teeth is anticipated, may be used when lingual tori are present, indicated when all posterior teeth are to be replaces bilaterally because it offers indirect retention
lingual plate
