Tooth Landmarks

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Cingulum
A bulge or prominence of enamel found on the cervical third of the lingual surface of an anterior tooth

Cusp
(a) a pronounced elevation on the occlusal surface of a tooth terminating in conical or rounded surface; (b) any crown elevation which begins calcification as an independent center. A cusp is considered to have an apex and four ridges.

Cusp of Carabelli
The “fifth” cusp located on the lingual surface of Maxillary 1st Molars

Fissure
A fault occuring along a developmental groove caused by incomplete or imperfect joining of the lobes. When two fissures cross they form a pit.

Fossa
A rounded or angular depression of varying size on the surface of the tooth.

Lingual Fossa
A broad, shallow depression on the lingual surface of incisor or canine.

Central Fossa, Maxillary Molars
A relatively broad, deep angular valley in the central portion of the occlusal surface of a maxillary molar.

Central Fossa, Mandibular Molars
A relatively broad, deep angular valley in the central portion of the occlusal surface of mandibular molar.

Triangular Fossa
A comparatively shallow pyramid-shaped depression on the occlusal surfaces of the posterior teeth, located just within the confines of the mesial and/or distal marginal ridges

Groove
A small linear depression on the surface of a tooth

Developmental Groove
A groove formed by the union of two lobes during development of the crown

Supplemental Groove
An indistinct lineardepression, irregular in extent and direction, which does not demarcate major divisional portions of a tooth. These often give the occlusal surface a wrinkled appearance.

Incisal Edge
Formed by the junction of the linguoincisal surfaces of an anterior tooth. This edge does not exist until occlusal wear has creates a surface linguoincisally. This surface forms an angle with the labial surface.

Lobe
A developmental segment of the tooth. As lobes develop they coalesce to form a single unit

Mamelon
A rounded or conical prominence on the incisal ridge of a newly erupted incisor. They are usually three in number, and soon disappea as the result of wear.

Ridge
A linear elevation on the surface of a tooth. It is named according to its location or form.

Cusp Ridge
An elevation which extends in a mesial and distal direction from the cusp tip. Cusp ridges form the buccal and lingual margins of the occlusal surfaces of posterior teeth.

Incisal Ridge
The incisal portion os anewly erupted anterior tooth

Marginal Ridges
Elevated crests or rounded folds of enamel which form the mesial and distal margins of the occlusal surfaces of posterior teeth and the lingual surfaces of the anterior teeth. Marginal ridges on the anterior teeth are less prominent and are linear extensions from the cingulum, forming the lateral borders of the lingual surface.

Oblique Ridges
Elevated prominences on the occlusal surfaces of a maxillary molar extending obliquely from tips of the mesiolingual cusp to the distobuccal cusp

Triangular Ridges
Prominent elevations, triangular in cross section, which extend from the tip of a cusp toward the central portion of the occlusal surface of a tooth. They are named for the cusp to which they belong.Also described as those ridges which descend from the tip of the cusps and widen toward the central area of the occlusal surface.

Transverse Ridges
Made up of the triangular ridges of a buccal and lingual cusp which join to form a more or less continous elevation extending transversely across the occlusal surface of a posterior tooth.

Sulcus
An elongated valley in the surface of a tooth formed by the inclines of adjacent cusps or ridges which meet at an angle.

Ridges
A linear elevation on the surface of the tooth

Grooves
Linear depression on tooth

Embrasures
Open spaces b/w proxiaml surfaces of 2 adjacent teeth

Embrasures Importance
Natural spillway for food
Self-cleansing avoid food impaction b/w teeth

Functions of Contact Area
2 Adjacent tooth in alveolus
Stabilizes tooth in alveolus
Prevents food impaction
Shunts food away from interdental papilla

Lack of contact areas and embrasures
Local pathology
Negative affect periodontium
Restorative dentistry’s Goal replace contacts

Tubercles
Small, rounded projections of enamel often present on lingual tooth surfaces

Labial Ridges
Run from canine cusps toward CEJ on facial surface

Buccal Ridges
Run from centers of premolar of buccal cusps toward CEJ on buccal surface

Cervical Ridges
Runs mesiodistally just above CEJ at cervical third of a tooth

Tertiary Groove
Tiny grooves, smaller than developmental or secondary grooves. May be found on third molars, making tooth looks wrinkled

Pit
Small depression at deepest part of fossa where two or more developmental grooves

Developmental Depression
Concavity on crown or root of tooth that occurs at junctionof two lobes or roots.

Convexities (Bumps)
Cusps, Cingulum, Mamelons, and Ridges

Depressions
Sulcus, Developmental Groove, Supplemental Groove, Fossa, and Pits

Crest of Cruvature (Height of Contour)
Greatest Convexity Buccal, Lingual, Mesial, and Distal

Proximal Crest of Curvature
Contact Area

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Coalesce Fusion of lobes Developmental grooves/depressions Grooves that appear where lobes have coalesced WE WILL WRITE A CUSTOM ESSAY …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Where is the facial height of contour for all molars The Cervical 1/3 Where is the lingual height of …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Primary teeth emerge in children between the ages of ____ and _____. 6 months and 2 1/2 years. Beginning …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy The primary tooth that has the most distinctly prominent facial cervical ridge is Mandibular 1st molar The lingual cusp …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Alveolar Process The bone that surrounds and supports the teeth Alveolus The bony socket in which the tooth is …

We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy Incisors Cut food, Articulate speech, support lips, Guide mandibular movement Mesial Angle Has S shape **** WE WILL WRITE …

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