PERMANENT MAXILLARY ANTRIOR TEETH

MAXILLARY INCISORS Most prominent Widest MD Straight incisal edge Straight M Slightly curved D

Labial view Convex at cervical portion of crown Mamelons – visible when fresh Development lines divide into 3 parts D rounded at contact Root – cone, blunt apex

Lingual view Lingual fossa, bordered by M and D marginal and incisal ridges prominent cingulum Crow & root taper L L portion of the root – narrower than F

Mesial view triangular outline incisal ridge of the crown is aligned on the long axis of the tooth & the root apex The greatest cervical curvature in the mouth Root – cone shaped, blunt

Distal view Little difference with M Less cervical curvature

Incisal view crown is roughly triangular in outline the incisal edge is nearly a straight line

Maxillary Lateral Incisor resembles the central incisor, narrower MD Smaller All futures more prominent

Labial view Distal incisal angle is more rounded Cervical curvature is more rounded Crown more convex (more rounded)

Distal / Mesial view line through the long axis of the tooth bisects the crown Root appears longer D cervical curvature bigger than M

Incisal view resemble either the central or the canine to varying degrees (with large cingulum) more rounded than the mesial incisal angle

Root tip of the root may incline distally Straight, thick, cylindrically shaped

Pulp cavity Varies in size Smaller with age One root canal with three (or one or two) pulp horns in the center

Maxillary Canine longest and most stable of teeth in the mouth Self cleaning qualities cornerstones of the dental arch (canine eminence) only teeth in the dentition with a single cusp

Resemble an incisor – four developmental lobes Middle lobe – a single cusp L lobe larger than incisors Cingulum has the greatest development of all anterior

Labial Crown narrower MD than incisors Cervicoincisal length is much large M crown is straighter, convexity at contact D crown more rounded Developmental lines – 2 shallow depressions Well developed middle lobe Root slender than crown, blunt apex, turns sharply distal

Lingual view Distinct M and D marginal ridges Well-devloped cingulum, and the lingual ridge runing from cusp tip to cingulum L ridge extends from the cusp tip to the cingulum, dividing the lingual surface into mesial and distal fossae Root is narrow than F, cross section triangular

Mesial view Bulky cingulum region L line more convex triangular outline Root broad LF & long M surface – convex, cervical can be flat Developmental depression appears divides single root in two

Distal view Cervical – less curvature D marginal ridge – more developed than M D surface – more concavity at contact More pronounced developmental root depression

Incisal view thicker LF than MD tip of the cusp is displaced labially (F) Larger LF from any anterior teeth

Root Longest Tapers from F toward L Apex points D

Pulp cavity Large pulp chamber and single canal One single pulp horn which extends toward the tip of the cusp