Manuals_files/CD Manual 12.pdf - Removable Prosthodontics

Selecting & Setting Teeth - 49
Intraoral Checks:
- Maxillary central incisors should lightly touch inside of vermilion border of lower lip
for ‘F’,‘V’ sounds; ‘S’ sounds — incisal edges should approximate each other
- Incisal edges of maxillary incisors should follow line of lower lip when smiling (‘smile
line’)
- Crown removing forceps can be used to bodily move and angle teeth that need
repositioning
- Do not hesitate to grind the record base and/or tooth to modify position if teeth do not
appear properly positioned – don't let the record base dictate the position
- The nasolabial angle should be approximately 90°; if there is insufficient support, the
lip will thin, lengthen and the vermilion border will be reduced or lost
- The junction of glossy oral mucosa should just be barely visible when the lips are
slightly separated. If it is not visible, then the lip is probably insufficiently supported;
lips should meet at the junction of the oral and transitional epithelium
- Excessive blockout of the record base in the anterior will tend to push the lip out at the
height of the vestibule, shortening and distorting the lip and nasolabial angle – the
teeth will look short when denture is finished and the flange is properly contoured
- Lisping: • too much horizontal overlap • palatal contour too constricted
• anterior teeth too far labially • broaden & thicken contour for tongue contact
• arch form too broad
Remember that anterior teeth are not set just where precursors were -
Stability is important
AVOID THE DENTURE SMILE: TEETH TOO SMALL, NOT SHOWING, TOO
STRAIGHT ACROSS; “CHICLETS”