The process by which the roots of a baby tooth are resorbed and dissolved until the deciduous tooth falls out
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Resorption
Osteoclasts (bone destroying cells) destroy the roots of the deciduous teeth
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Congenitally missing
A tooth that has never formed because a tooth bud was never produced
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Edentulous
No teeth present
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Cusp
Is a point or a peak on the occlusal surface
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Cusp Slope or Cusp Ridge
Inclined surface that forms an angle from the tip of a cusp.
1 cusp=4 cusp ridges
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Cingulum
An enlargement or bump located on the crown lingually along the gingival or CEJ
(Cemento-enamel junction) on the anterior teeth in cervical third.
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Ridge
Longitudinal convexities of enamel (raised border)
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Labial ridge
A linear elevation located on the labial side of the incisors/canines
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Buccal ridge
A linear elevation located on the buccal side of the premolars/molars
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Cusp ridge
An elevation that extends in the mesial and distal direction from the cusp
tip
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Marginal ridge
Elevated crests of enamel of the tooth where the sides meet the top –
the borders around the crown
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Oblique ridge
Elevated prominences on the occlusal surface of maxillary molars from
the tip of the mesiolingual to distobuccal cusp (only on maxillary molars is the
Distobuccal cusp and the Mesiolingual cusp).
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Triangular ridge
Prominent elevations, triangle in cross-section, extend from the tip
of a cusp towards the central portion of the occlusal surface. On ALL posterior teeth
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Transverse ridge
Made up of triangular ridges of a buccal and lingual cusp which join
to form a continuous elevation (one cusp to another)
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Mamelon
A rounded prominence on the incisial ridge of a newly erupted incisor, usually
disappears as the result of mechanical wear (attrition).
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Sulcus
Broad depression / valley on the occlusal surface of a posterior teeth
formed by inclines of adjacent cusps or ridges which meet at an angle.
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Groove
A small linear depression on the surface of a tooth (It is not the kind
of groove you get on at a party!)
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Developmental groove
A groove formed by the union of two lobes. It is a sharply
defined narrow linear depression
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Supplemental groove
An indistinct linear depression, irregular in extent and direction
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Lobe
A development segment of the tooth. As lobes develop they join to form a single unit
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Fossa
A rounded / angular depression of varying size on the surface of the tooth – on ALL
posterior occlusal surfaces
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Pits
When two fissures cross, they form a pit
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Fissure
A fault occurring along a developmental groove caused by incomplete or imperfect
joining of lobes
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Convex
Curving outward or away from the focus
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Concave
Curving inwards or towards the focus
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Overbite
Vertical overlap of upper teeth on lower teeth when you close jaws, upper teeth are longer and extending on lower teeth crown.
Amount of vertical overlap: 2-4 mm.
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Overjet
Horizontal overlap when lower teeth edges are located more orally or lingually than upper teeth edges.
Amount of horizontal overlap: 2-4 mm.
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Embrasure
Open space between the proximal surfaces of two adjacent teeth in the same arch, where they diverge facially or lingually, and incisally (occlusally) or cervically from the contact area.
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Other cards in this set
Card 2
Front
Resorption
Back
Osteoclasts (bone destroying cells) destroy the roots of the deciduous teeth
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