INCISORS Flashcards
These are located on either side in their respective arch with their mesial surfaces next to one another at midline, usually in contact. Their distal surfaces contact the mesial surfaces of the lateral incisors.
Central incisors
They are just distal to the central incisors, while their mesial surfaces are in contact with the distal surfaces of adjacent central incisors. Their distal surfaces contact the canines.
Lateral incisors
These are pair of eight teeth directly situated in the front and center of your mouth. These pair of teeth are used to take bites of food.
Incisors
What are the functions of incisors?
Cut food, enable articulate speech, help to support the lip and maintain an esthetic appearance, help guide the mandible posteriorly during the final phase of closing just before the posterior teeth contact
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
They have relatively ___________ incisal
edge
straight or slightly curved
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
Crowns are relatively rectangular, _________ than wide mesiodistally
longer incisogingivally
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
They _____ from the widest mesiodistal areas of
proximal contact toward the cervical line
Taper
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
The incisor crown outlines are more convex on the distal than on the mesial surfaces EXCEPT on?
mandibular central incisors
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
The incisor mesioincisal angles are more _____
than distoincisal angles EXCEPT on
mandibular central incisors
acute
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
Incisor crown contact areas on mesial surfaces are located in the _______
incisal third
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
On the distal surfaces, the contact areas are
_________________ EXCEPT on the distal of the mandibular central
more cervical than mesial
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
Before wear, the incisal edge of all incisors
EXCEPT the symmetrical mandibular central
________________.
slopes cervically toward the distal.
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR CROWNS:
The cervical line curves toward the ____ in the middle of the facial surfaces
apex
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR ROOTS:
When viewed from the _____, taper from the cervical line to the apex
facial
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR ROOTS:
They are wider faciolingually than mesiodistally EXCEPT on __________.
maxillary central incisor
GENERAL SIMILARITIES OF MOST INCISORS FROM THE FACIAL VIEWINCISOR ROOTS:
Incisor roots may bend in the _____________ EXCEPT maxillary central incisor roots
apical one third
CHARACTERISTICS OF ALL INCISORS FROM THE LINGUAL VIEW:
Incisor crowns, when viewed from the lingual, have a _________.
narrower lingual surface
CHARACTERISTICS OF ALL INCISORS FROM THE LINGUAL VIEW:
The mesial and distal marginal ridges converge toward the____________.
lingual cingulum
CHARACTERISTICS OF ALL INCISORS FROM THE PROXIMAL VIEW- INCISOR CROWNS:
What is the shape of the crown in the proximal view?
Wedge shape or triangular
CHARACTERISTICS OF ALL INCISORS FROM THE PROXIMAL VIEW- INCISOR CROWNS:
They have a facial outline that is more convex cervically than _______.
incisally
CHARACTERISTICS OF ALL INCISORS FROM THE PROXIMAL VIEW- INCISOR CROWNS:
The facial height of _______ that is in the
cervical third, just incisal to the cervical line
contour or outline
CHARACTERISTICS OF ALL INCISORS FROM THE PROXIMAL VIEW- INCISOR ROOTS:
The incisor root from the proximal view is?
Widest in the cervical third
CHARACTERISTICS OF ALL INCISORS FROM THE PROXIMAL VIEW- INCISOR ROOTS:
They gradually taper to a ______ apex
rounded
CHARACTERISTICS OF ALL INCISORS FROM THE INCISAL VIEW:
Incisal ridge that terminates mesiodistally at the ___________ of the crown
widest portion
CHARACTERISTICS OF ALL INCISORS FROM THE INCISAL VIEW:
The labial outline is ______________
than the convex lingual outline
broader and less curved
CHARACTERISTICS OF ALL INCISORS FROM THE INCISAL VIEW:
Marginal ridges converge toward the ______.
cingulum
CHARACTERISTICS OF ALL INCISORS FROM THE INCISAL VIEW:
The crown outline tapers from proximal _________ toward the cingulum.
contact area
ARCH TRAITS THAT DISTINGUISH MAXILLARY FROM MANDIBULAR INCISORS:
Mandibular incisor crowns are relatively wider __________ than mesiodistally compared to maxillary central incisors.
faciolingually
ARCH TRAITS THAT DISTINGUISH MAXILLARY FROM MANDIBULAR INCISORS:
Mandibular incisor crowns also have _______________ with less prominent anatomy than maxillary crowns, which have deeper fossae and more pronounced marginal ridges
smoother lingual surfaces
ARCH TRAITS THAT DISTINGUISH MAXILLARY FROM MANDIBULAR INCISORS:
Mandibular incisor roots are longer in proportion to their crowns than are ____________.
maxillary incisor roots
ARCH TRAITS THAT DISTINGUISH MAXILLARY FROM MANDIBULAR INCISORS:
Incisal ridges of mandibular incisors are usually positioned lingual to the ______________: incisal ridges of maxillary incisors are more often on or labial to the root axis line
mid root axis line
ARCH TRAITS THAT DISTINGUISH MAXILLARY FROM MANDIBULAR INCISORS:
Facets that commonly form on mandibular incisors are more on the _______ of the incisal edge, sloping cervically toward the labial.
labial slope
ARCH TRAITS THAT DISTINGUISH MAXILLARY FROM MANDIBULAR INCISORS:
Facets 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
