Lec 9: THE OCCLUSAL SURFACEs Flashcards
T/F
patients’ family members and friends opinion or input are also
considered in teeth selection protocol
T
T/F
ANTERIOR TEETH SELECTION
window light from north side as well as on the south side
T
GUIDES IN TEETH SELECTION AND ARRANGEMENT
→ current or previous prosthetic teeth
→ old study casts
→ photographs wherein patient is smiling
→ children’s photos
same, curved, or straight, amount of wear
Tooth shape
same or moved left/right
A. Midline
B. Occlusal Plane
C. Dental Arch
D. Lip support
E. Unique features
F. Gingival Color
A
same or tilted, moved up/down, more or less visible
A. Midline
B. Occlusal Plane
C. Dental Arch
D. Lip support
E. Unique features
F. Gingival Color
B
same or moved in/out, more or less curved or flat, more or less visible
A. Midline
B. Occlusal Plane
C. Dental Arch
D. Lip support
E. Unique features
F. Gingival Color
C
same or too little/too much
A. Midline
B. Occlusal Plane
C. Dental Arch
D. Lip support
E. Unique features
F. Gingival Color
D
same or incisal wear, chips, rotations, spaces, restorations
A. Midline
B. Occlusal Plane
C. Dental Arch
D. Lip support
E. Unique features
F. Gingival Color
E
same or less/more pigmented, custom shading
A. Midline
B. Occlusal Plane
C. Dental Arch
D. Lip support
E. Unique features
F. Gingival Color
F
T/F
When planned improvement means change, work within the range that the patient can accept and assess the tolerance and motivation of your patient for change
T
T/f
shade selection process can be done by elimination from the set of complete shade guide, by selecting first the lightest and darkest tabs
T
SIZE SELECTION
valuable inputs:
→ existing dentures
→ models or previous teeth
→ photographs
→ set two different sizes on a piece of wax and place it under the
upper lip and find out which on the patient prefers
a high smile line that displays a lot of gingiva would benefit
from the selection of a less tapered mold with a long contact point
PATIENT PREFERENCES
porcelain or acrylic
PATIENT PREFERENCES
OVERDENTURES AND IMPLANT DENTURES
→ implant abutments create areas of limited ____ space
interocclusal
use larger square mold acrylic unlayered teeth
OVERDENTURES AND IMPLANT DENTURES
T/F
→ acrylic teeth is preferred for dentures that oppose natural teeth
T
T/ F
porcelain can be very abrasive and can contribute to the wear and destruction of opposing teeth’s enamel
T
T/ F
porcelain teeth should only be used if the opposing dentition is also porcelain (as in set of dentures) because porcelain can rapidly wear opposing enamel and restorations
T
porcelain anterior teeth have two small ___ ___
plated pins
porcelain posterior teeth have hollowed out center or
__
diatoric
Denture tooth molds are often ___ than the natural teeth they replace
narrower
T/ F
The improved attachment provided by titanium implants has dramatically improved the chewing ability of edentulous patients far more than any posterior tooth mold.
T
posterior artificial teeth are manufactured with cusp inclines that vary from ___ degrees (anatomical) to 0 degree (flat)
30
guide to the midline for the maxillary central incisors and the prominence of the incisors and cuspids
Incisive Papilla
guides the bucco-lingual positioning of the bicuspids
Mandibular bicuspid residual ridge
T/ F
anterior artificial teeth should be set into positions similar to that previously occupied by the natural teeth for esthetics and speech
T
good static guide to the midline position of the two upper central incisors in the denture
Incisive Papilla
set on this midline will have positions similar to those of the natural teeth
Central Incisors
will have midline marked based on the appearance of the lips and face
Wax Registration Rim
to create a minimum overbite/overjet for a standard anterior setup–use the maxillary ____as a guide to position the mandibular teeth
wax rim
T/ F
mandibular occlusal plane would be located at a height near the corners of the mouth so as to be visible with a “lips apart/mouth breathing” posture
T
MANDIBULAR CENTRAL INCISOR POSITIONS
the incisal edges of these teeth are set at the height of the maxillary wax occlusal rim to create minimal ___ overlap with the maxillary central and canine teeth
vertical
MANDIBULAR CENTRAL INCISOR POSITIONS
a ____ mm horizontal overlap should exist between the lingual surface of the maxillary anterior teeth and the labial surface of the mandibular anterior teeth
1-2
MANDIBULAR LATERAL INCISORS
position the lateral incisors next to the central incisors, with their long axes directed ___ the residual ridge
toward
MANDIBULAR LATERAL INCISORS
-the incisal edge should be at the height of the wax ____
-continue the 1-2 mm of horizontal overlap between the maxillary and mandibular anterior teeth
occlusal rim
MANDIBULAR CANINES
place the mandibular canines with the anterior ___of the incisal edge in symmetry with the lateral and central incisors
-place the incisal tip at the same level as the lateral and central incisors
1⁄2
MAXILLARY CENTRAL INCISORS
the long axes should ____ slightly on each side of the midline
diverge
the teeth should not look like a “white picket fence”
MAXILLARY CENTRAL INCISORS
T/F
MAXILLARY LATERAL INCISORS
place the maxillary lateral incisor next to the central incisor, with the neck slightly depressed
T
T/F
MAXILLARY LATERAL INCISORS
→ this incisal edge is even with the remaining maxillary wax occlusal rim and is therefore slightly elevated from the central incisor
T
T/ F
MAXILLARY LATERAL INCISORS
the incisal edge is parallel with the mandibular wax occlusal rim
T
T/F
MAXILLARY CANINES
place the maxillary canine so that the anterior one half of the incisal edge is in symmetry with the lateral and central incisors as it curved around the labial contour of the wax occlusal rim
→ the neck of the tooth must be prominent and the tooth tilted slightly to the distal
T
T/F
mandibular denture covers a smaller area than the maxillary one, it requires more muscular control for its stability
T
T/F
the posterior references of the center of the retro-molar pads (RMPs) will place the mandibular occlusal plane at a level and width similar to the natural dentition that is familiar to the tongue
T
T/ F
tooth contact should be in the area where the resorbed ridge is parallel to the occlusal plane
T
cuspless teeth, can also be used for balance concept with compensating curves
Monoplane or Non-Anatomical
combinations of upper anatomical and lower nonatomical molds
Lingualized Articulations
T/F
the buccal cusps of both the maxillary and mandibular teeth appear realistic, but they do not touch in occlusion or excursions
T
