Dental Anatomy Overview

What is the curvature of the CEJ on the distal surface of a tooth compared to the mesial surface?

Tooth roots usually curve mesially.

The distal incisal edges of anterior teeth are more pointed than the mesial incisal edges.

Mandibular anterior teeth tend to wear on the lingual incisal edges.

Permanent molars are generally larger in height and have more cusps than deciduous molars.

Permanent molars tend to have less secondary and tertiary anatomy than deciduous molars.

The roots of molars tend to be longer and farther apart the more posterior they are positioned.

The more posterior a molar is positioned, the less variation in its anatomy is evident.

Deciduous teeth are larger in size than permanent teeth.

Deciduous teeth have a greater width-to-height ratio than permanent teeth.

Deciduous teeth have less prominent cervical ridges, incisal edges, and a less constricted cervix compared to permanent teeth.

Deciduous teeth have weaker and thinner roots compared to permanent teeth.

Incisors have a cusp on their incisal edge.

Maxillary incisors are wider mesiodistally than faciolingually.

The root of a maxillary incisor is narrower on the facial side than on the lingual side.

Maxillary central incisors have a smaller crown-to-root ratio than maxillary lateral incisors.

The mesio-incisal angle of a maxillary central incisor is rounded.

The contact area of a maxillary central incisor is located in the incisal third.

Maxillary central incisors have a narrow, shallow lingual fossa without a cingulum.

Maxillary lateral incisors have a greater crown-to-root ratio than maxillary central incisors.

The mesio-incisal angle of a maxillary lateral incisor is sharp and defined.

The contact area of a maxillary lateral incisor is located at the junction of the middle and incisal thirds.

Maxillary lateral incisors have a prominent cingulum.

The mesio-incisal angles of incisors are more rounded than the disto-incisal angles.

The crest of the cervical line on incisors is more often displaced distally.

The mesio-cervical line on incisors curves more incisally than the disto-cervical line.

Mandibular incisors are larger than maxillary central or lateral incisors.

The crown of a mandibular incisor is wider faciolingually than mesiodistally.

Mandibular incisors have a square root cross-section.

Mandibular incisors generally wear on the lingual surface.

The incisal edge of a mandibular incisor is angled towards the labial side.

The incisal edge of a mandibular central incisor is perpendicular to the faciolingual axis of the tooth.

The mesial and distal lobes of a mandibular central incisor look different.

The cervical line of a mandibular central incisor curves more incisally on the mesial side than on the distal side.

The root tip of a mandibular central incisor is more likely to have a mesial curve.

Mandibular central incisors are more likely to show wear on the mesial surface.

The distoincisal edge of a mandibular lateral incisor is angled towards the labial side.

The mesial lobe of a mandibular lateral incisor is generally larger than the distal lobe.

Canines have a single, conical cusp with a well-developed mesiofacial lobe.

Canines have a lingual cusp ridge that extends from the cusp tip to the lingual fossa.

Maxillary canines have a poorly developed marginal ridge, cingulum, and fossa on the lingual surface.

Maxillary canines have a larger crown than incisors and mandibular canines.

The mandibular canines are more rounded than maxillary canines.

The cusp tip of a maxillary canine is located directly midcenter over the root.

The cervical line on a maxillary canine curves more incisally on the distal side than on the mesial side.

The distofacial lobe of a maxillary canine is elongated when viewed from the incisal angle.

The distal surface of a maxillary canine is rounded when viewed from the facial angle.

The contact area of a maxillary canine is located more cervically.

Mandibular canines have a well-developed cingulum and fossa on the lingual surface.

Mandibular canines are wider than maxillary canines.

Mandibular canines are more likely to show wear on the facial (labial) surface than maxillary canines.

Mandibular canines are more prominent than maxillary canines.

Premolars have at least three cusps, with at least two being lingual cusps.

Maxillary premolars have two major cusps: buccal and mesial.

Maxillary premolars are wider mesiodistally than faciolingually.

The facial and lingual cusps of maxillary premolars are nearly the same height.

Maxillary premolars are located over the root trunk.

The facial cusp of a maxillary first premolar is shorter than the lingual cusp.

Maxillary first premolars have two roots, buccal and lingual, in over 95% of cases.

The occlusal surface of a maxillary first premolar has a well-developed central groove, with numerous supplemental grooves.

The mesial surface of a maxillary first premolar has a depression below the cervical line.

The mesial marginal groove of a maxillary first premolar is a very distinguishing feature.

The cervical line on the mesial surface of a maxillary first premolar curves more occlusally than on the distal surface.

The mesio-facial cusp ridge of a maxillary first premolar forms a rounded angle with the mesial marginal ridge.

The disto-facial cusp ridge of a maxillary first premolar forms a sharp angle with the distal marginal ridge.

Maxillary second premolars have two roots: facial and lingual.

Maxillary second premolars have a large, central groove.

Maxillary second premolars have a depression on the mesial surface.

The lingual cusp of a maxillary second premolar is displaced towards the mesial side.

Mandibular premolars have a dominant lingual cusp.

Mandibular premolars are narrower mesiodistally than faciolingually.

The facial cusp of a mandibular premolar is smaller than the lingual cusp.

The lingual cusps on a mandibular premolar extend lingually past the lingual border of the root.

The occlusal surface of a mandibular first premolar is tilted towards the mesial side.

The cervical line on a mandibular first premolar curves more occlusally on the distal side than on the mesial side.

The occlusal view of a mandibular first premolar is shaped like a triangle.

There is a central pit present in the occlusal view of a mandibular second premolar.

Mandibular second premolars are more similar in appearance to molars than mandibular first premolars.

The occlusal surface of a mandibular second premolar is significantly tilted towards the lingual side.

Mandibular second premolars can have two lingual cusps.

Molars typically have three to five cusps, with at least two being lingual cusps.

Maxillary molars have a wider crown in the mesiodistal direction than in the faciolingual direction.

Maxillary molars typically have two roots on the facial side and one root on the lingual side.

The oblique ridge on a maxillary first molar is likely to be crossed by a groove.

The roots of a maxillary first molar are closely held together.

A fifth cusp, known as Carabelli's cusp, is often present on the mesiolingual cusp of a maxillary first molar.

The oblique ridge on a maxillary second molar is usually interrupted by a groove.

The mesiolingual cusp on a maxillary second molar is smaller than the distolingual cusp.

The roots of a maxillary second molar are farther apart than the roots of a maxillary first molar.

A fifth cusp is typically present on a maxillary second molar.

The distolingual cusp on a maxillary third molar is typically smaller than the distolingual cusp on a maxillary first molar.

Maxillary third molars typically have a distinct oblique ridge.

Maxillary third molars have three main cusps.

Maxillary third molars are frequently fused together.

The roots of maxillary third molars are longer than the roots of maxillary first molars.

The disto-facial cusp of a maxillary third molar is much shorter than the disto-facial cusps of other maxillary molars.

The roots of maxillary third molars are typically curved mesially.

Mandibular molars have a wider crown faciolingually than mesiodistally.

Mandibular molars typically have three roots.

Mandibular first molars have four facial cusps.

The roots of mandibular first molars are closely together.

Mandibular second molars have three facial cusps and a distinct occlusal groove.

Mandibular second molars have more secondary anatomy than mandibular first molars.

The occlusal groove of a mandibular second molar runs straight from the mesial to the distal side.

The buccal height of the contour on a mandibular second molar is greater in the middle third than in the cervical third.

Mandibular third molars are similar in morphology to mandibular second molars.

Mandibular third molars typically have a large central groove.

Mandibular third molars have very long roots.

The crown of a mandibular third molar tapers mesially.

The crown of a mandibular third molar is wider from the facial to lingual side on the distal surface than on the mesial surface.