Incisors General Flashcards
(24 cards)
How much lobes form all incisors ?
4
What’s the form of incisors from fascial view ?
Straight or slightly curved Incisal edge lingually
Incisors are rectangular in shape they are wide in one direction and narrow from other what’s them does this property help In smile design ?
Longer incisors-gingivally than M-D
From which are crown start to narrow or wide ?
Start taper from contact point to cervical area where its narrow form found and widen Incisally
Where does fascial high of contour (greatest bulge ) found in incisors ?
Cervical 3rd just Incisal to cervical line
Where is the lingual high of contour ?
In cinglum , middle 3rd of lingual part
Cervical line proximally its curved toward Incisal edge in one are that other can you name them?
Curved more mesially than distally
From Incisal view how does lingual fossa appear ?
Concave just Incisal to cinglum
From Incisal edge what’s the differences between labial Ang lingual outlines ?
Labial outline broader and less curved than convex lingual outline
Which outline is more narrow fascial or lingual ?
Margin, ridges converge toward cinglum , and crown outline tapers from proximal contact area toward cinglum
RESULT IN , narrow lingual than fascial
What’s the difference between mandibular incisors than maxillary ?
Mandibular they are more equal in size , and flat the maxillary on M and D surfaces and contact point more incisally than maxillary
compared to maxillary central incisors, which are wider mesiodistally what about mandibular ?
Mandibular incisor crowns are relatively wider
faciolingually than mesiodistally
maxillary crowns, which have deeper fossae and more pronounced marginal ridges what about mandible?
Mandibular incisor crowns also have smoother lingual surfaces with less prominent anatomy
maxillary crowns, which have deeper fossae and more pronounced marginal ridges what about mandible?
Mandibular incisor crowns also have smoother lingual surfaces with less prominent anatomy
Incisal ridges of mandibular incisors are usually positioned lingual to the mid-root axis line, whereas the incisal ridges of maxillary incisors are ?
more often on or labial to the root axis line (best seen from the proximal
views on Appendix 2o).
What’s the mechanism of wear in mandibular incisors ?
This wear occurs when the labial part of the incisal edges of mandibular incisors slides forward and downward while contacting the lingual surface and part
of the incisal edge of opposing maxillary incisors.
What’s facet ?
When wear results in a shiny, flat, polished surface of enamel on
the incisal edge
Compare maxillary incisors wear to mandibular ?
**mandibular incisors are more on the labial slope of the incisal edge, sloping cervically toward the labial.
**on maxillary incisors occur more on the lingual slope of the incisal edge, sloping cervically toward the lingual fossa and may occur on the lingual marginal ridges.
All incisors convex in distal area than mesial except ?
MANDIBULAR CENTRAL
All incisors mesioincisal angle acute (sharp) than distal except ?
Man central no noticeable difference
All incisors mesial contact are more in Incisal 3rd and distal more cervically except ?
Man central distal and mesial at same level
All incisors appear shorter in distal Incisal edge than mesial except ?
Man incisors
Where does cervical line curves ?
Toward apex in fascial and lingual
All incisors roots except maxillary central are ?
Wider F-L than M-D
All of them roots bend in apicalm1/3 distally
