Lecture 6-Delivery and adjustments of the RPD Flashcards
A properly fabricated clasp assembly will not apply ______ forces to the associated abutment.
LATERAL
What is the main way a clasp assembly can cause damage to an abutment tooth?
if it is not seated all the way
_______ finish lines should be sharpley defined and slightly UNDERCUT to help retain acrylic
EXTERNAL
The framework should be rigid enough to resist ______ under finger pressure
flexure
RED STAR: The framework ALWAYS must be fitted to the ________ arch before _______ adjustments are made
supporting….occlusal
What are the two main disclosing mediums used for identifying areas of interference and binding of the metal framework? (WHICH medium is NOT used?!!)
1.Disclosing wax 2.occlude…NOT USED: pip paste (just for acrylic
When evaluating disclosing wax- areas where there is lots of contact between the framework and the tissue will be what color? What color will be places with little or no contact?
heavy contact (thin wax) will be grey….light contact (thick wax)will be white
When doing the metal try in-pressure is NEVER applied to the _______ areas of the framework.
extension base areas
Disclosing wax- When the framework has been properly adjusted, the disclosing wax displays a ______ hue
grayish
Identify the patients existing occlusal contacts with ________. The same occlusal contacts must be present after insertion of the framework
shim stock
Which do you check for first: centric or eccentric interferences?
centric
What are the three indications for a necessary CORRECTED CAST IMPRESSION?
1.Mandibular Distal Extension 2.long-span maxillary distal extension 3.long-span anterior replacements
When are jaw relation records usually taken?
at the metal try-in
Which type of RPD is there an esthetic try in appointment associated with it?
any RPD with anterior teeth to be replaced
Altered cast: Utility wax is used to rim the impression. The utility wax should be located __-__ mm from the impression borders and should extend peripherally __-__ mm
2-3mm….3-4mm
When getting a mounting record with occlusal rims: Each occlusion rim is adjusted so that NO CONTACT occurs between its surface and the opposing occlusal surfaces. A space of approximately ___ mm should be evident
1mm
When getting the mounting record for RPD Class I you put the patient into which jaw position?
CR
When getting the mounting record for RPD Class III,IV you put the patient into which jaw position?
Mi
When getting the mounting record for RPD Class II you put the patient into which jaw position?
CR or Mi, a judgement call depending on the situation
What are the three possible occlusal schemes?
1.Canine guidance 2.unilateral balance occlusion (group fxn) 3.bilateral balance occlusion (complete dentures)
Occlusal _______ between a removable partial denture and the remaining natural teeth is a major factor in the preservation of the health of their surrounding structures
harmony
_______________ is the only factor not within the control of the dentist
The inclination of the condyle path
Which can be more damaging, Complete denture occlusal stresses or RPD occlusal stresses?
RPD
What are the 3 reasons why occlusion fails on an RPD?
1.lack of support 2.only used a static jaw relation record 3. unacceptable occlusal plane
What are the 2 exceptions when we wouldn’t rely on the existing teeth to establish occlusion with our RPD?
1.opposing a complete denture 2.only anterior teeth remain in both arches
To make desirable occlusion with an RPD: Simultaneous ________ contacts of opposing posterior teeth must occur in centric occlusion
bilateral
To make desirable occlusion with an RPD: Occlusion for ______-supported removable partial dentures may be arranged similarly to the occlusion seen in a harmonious natural dentition
tooth
To make desirable occlusion with an RPD: BILATERAL BALANCED occlusion in eccentric positions should be formulated when a maxillary ________ opposes the removable partial denture…do PROTRUSIVE contacts take priority over esthetics or phonetics?
complete denture…hell naw
To make desirable occlusion with an RPD: ________ side contacts should be obtained for the mandibular distal extension denture….________ contacts are purposefully AVOIDED because they would not enhance the stability of the restoration…. _______ balance is AVOIDED in favor of an acceptable appearance and a favorable occlusal plane.
Working…balancing…protrusive
DID YOU KNOW? Simultaneous working and balancing contacts should be formulated for the ______ bilateral distal extension removable partial denture whenever possible.
maxillary
When do I have to compromise bilateral balanced occlusion in a maxillary class I?
pt has STEEP VO and no HO
To make desirable occlusion with an RPD: Only working contacts need to be formulated for the maxillary or mandibular _______ (Class __) removable partial denture.
unilateral distal extension..class II
In the Kennedy Class IV RPD configuration, contact of opposing anterior teeth in the planned intercuspal position is desired to prevent continuous ______ of the opposing natural incisors
eruption
The mandibular buccal cusps, however, must be favorably placed to direct stress toward the _______
buccal shelf
Thee posterior teeth in a distal extension with a ________ buccal-lingual width than the original teeth!
NARROWER
Random aside: with a recent extraction, what type of material do you want for your RPD base?
Acrylic! you can reline it as the bone reforms
The artificial teeth of the Class I maxillary RPD often must be placed ______ to the crest of the residual ridge.
LATERAL
The practitioner may estimate the width of a maxillary central incisor by determining the ______ width and dividing it by WHAT NUMBER??
bizygomatic..16
The length of a maxillary central incisor may be estimated by determining the _______ distance and dividing it by WHAT NUMBER?
chin to-hairline..16
What are the 4 most common facial forms for choosing denture teeth?
1.Square 2.Tapering 3.Square-Tapering 4.Ovoid
The occlusion is adjusted by recontouring the occlusal surfaces of the _______ teeth
ARTIFICIAL
Can you put an I bar on the distal of a tooth in a class III situation?
YES! Only Class III
Which kennedy classifications do we ONLY use the Terms RPI and RPA??
Class I and Class II
EXAM Q!!It should not be necessary to adjust cast ______ during the DELIVERY appointment
BASES
It should not be necessary to adjust cast bases during the _______ appointment
DELIVERY….its done at the TRY in dawg!!
What is the most important aspect of applying and using pip paste?
uniform BRUSH STROKES! they tell you what you need to know
What are the two types of pliers used in adjusting wires?
139 plier and 200 plier
Which Class(es) of RPD are generally adjusted INTRAMURALLY?
Class III
Which Class(es) of RPD are generally adjusted via a CLINICAL REMOUNT procedure?
Class I, II, IV
What are the two exceptions for the Patient to NOT removing the RPD at night?
1.splinting hypermobile teeth 2.occlusial vertical dimension
Which type of impression material do you use to quickly check if a partial needs to be relined?
alginate
First step in indirect reline-Undercuts are relieved from the acrylic tissue surface of the RPD. The acrylic bases are shortened from the vestibular reflections by ___mm
2mm
When applying vaseline to an RPD when doing a direct remount, keep it __mm away from the borders of the RPD.
3mm
When using porcelain denture teeth they can ONLY oppose ______ teeth..
other porcelain teeth (they will wear down natural or acrylic teeth)
What is the term for preparing a portion of a denture tooth for mechanical retention?
Di-A-Tor-ics
When replacing a denture tooth, how much room do you leave for the repair acrylic?
2mm
What are the 3 types of TEMPORARY RPDs?
1.Interim 2.tranisitonal 3.treatement
An interim RPD….Note the absence of rest seats, hence the term “gingival-stripper”
gingival-stripper
_______ “partials”. Note absence of rest seats and wire clasps are “plastic”. This type of prosthesis has no rigidity and is damaging to tissues.
VAL-PLAST
A ________ denture is planned when some or all of the remaining teeth are beyond the point of restoration but immediate extractions are not indicated for physical or psychological reasons
transitional
A ________ partial denture is used to carry tissue conditioner to abused oral tissues
treatment
________: An alternate design FOR PERIODONTALLY COMPROMISED PATIENTS with Anterior Mobility
swinglock
_______: an alternate design FOR PERIODONTALLY COMPROMISED PATIENTS with Posterior Mobility
splinting
What is an example of a PRECISION ATTACHMENT?
patrix/matrix
WHAT IS THE MINIMUM HEIGHT REQUIREMENT for a patrix/matrix precision attachment? (BREAK IT DOWN TOO!)
7mm (1.5mm occ embrasure, 4mm tall attachment, 1.5mm gingival embrasure)
How wide (B-L) and how thick (M-D) is a precision attachment?
3mm wide (B-L)…1.0mm thick (M-D)
What is the name of the “ball and socket” type attachment?
DAL-BO
What are the three types of ROTATIONAL PATH RPDs?
1.AP 2.PA 3.Lateral
