Incisors General

Question 1

How much lobes form all incisors ?

Answer 1

4

Question 2

What’s the form of incisors from fascial view ?

Answer 2

Straight or slightly curved Incisal edge lingually

Question 3

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 ?

Answer 3

Longer incisors-gingivally than M-D

Question 4

From which are crown start to narrow or wide ?

Answer 4

Start taper from contact point to cervical area where its narrow form found and widen Incisally

Question 5

Where does fascial high of contour (greatest bulge ) found in incisors ?

Answer 5

Cervical 3rd just Incisal to cervical line

Question 6

Where is the lingual high of contour ?

Answer 6

In cinglum , middle 3rd of lingual part

Question 7

Cervical line proximally its curved toward Incisal edge in one are that other can you name them?

Answer 7

Curved more mesially than distally

Question 8

From Incisal view how does lingual fossa appear ?

Answer 8

Concave just Incisal to cinglum

Question 9

From Incisal edge what’s the differences between labial Ang lingual outlines ?

Answer 9

Labial outline broader and less curved than convex lingual outline

Question 10

Which outline is more narrow fascial or lingual ?

Answer 10

Margin, ridges converge toward cinglum , and crown outline tapers from proximal contact area toward cinglum

RESULT IN , narrow lingual than fascial

Question 11

What’s the difference between mandibular incisors than maxillary ?

Answer 11

Mandibular they are more equal in size , and flat the maxillary on M and D surfaces and contact point more incisally than maxillary

Question 12

compared to maxillary central incisors, which are wider mesiodistally what about mandibular ?

Answer 12

Mandibular incisor crowns are relatively wider
faciolingually than mesiodistally

Question 13

maxillary crowns, which have deeper fossae and more pronounced marginal ridges what about mandible?

Answer 13

Mandibular incisor crowns also have smoother lingual surfaces with less prominent anatomy

Question 14

maxillary crowns, which have deeper fossae and more pronounced marginal ridges what about mandible?

Answer 14

Mandibular incisor crowns also have smoother lingual surfaces with less prominent anatomy

Question 15

Incisal ridges of mandibular incisors are usually positioned lingual to the mid-root axis line, whereas the incisal ridges of maxillary incisors are ?

Answer 15

more often on or labial to the root axis line (best seen from the proximal
views on Appendix 2o).

Question 16

What’s the mechanism of wear in mandibular incisors ?

Answer 16

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.

Question 17

What’s facet ?

Answer 17

When wear results in a shiny, flat, polished surface of enamel on
the incisal edge

Question 18

Compare maxillary incisors wear to mandibular ?

Answer 18

**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.

Question 19

All incisors convex in distal area than mesial except ?

Answer 19

MANDIBULAR CENTRAL

Question 20

All incisors mesioincisal angle acute (sharp) than distal except ?

Answer 20

Man central no noticeable difference

Question 21

All incisors mesial contact are more in Incisal 3rd and distal more cervically except ?

Answer 21

Man central distal and mesial at same level

Question 22

All incisors appear shorter in distal Incisal edge than mesial except ?

Answer 22

Man incisors

Question 23

Where does cervical line curves ?

Answer 23

Toward apex in fascial and lingual

Question 24

All incisors roots except maxillary central are ?

Answer 24

Wider F-L than M-D
All of them roots bend in apicalm1/3 distally