Oral Anatomy 4
Terms
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- A small cell or cavity, hence a tooth socket, alveolus dentalis
- Alveolus
- portion of tooth covered with enamel
- Anatomic crown
- a division into 2 parts, as any two roots of a tooth
- Bifurcation
- an accessory cusp often noted on the lingual surface of the maxillary molar mesiolingual cusp
- Carabelli’s cusp
- a relatively broad deep angular valley in the central portion of the occlusal surface of a molar
- Central Fossa
- a line formed by the junction of enamel and cementum (CEJ)
- Cervical line
- a narrow or constricted portion of a tooth in the region of the junction of crown and root
- Cervix (pl. cervices)
- a small cusp or tubercle on the lingual face of the tooth
- Cingule
- the ridge or tubercle on the lingual face of the tooth near the gingival
- Cingulum (pl. cingula)
- the portion of crown visible in oral cavity
- Clinical crown
- that region of the mesial or distal surface that touches the adjacent tooth in the same arch
- Contact area
- of or pertaining to a crown; applied by some to the occlusal surface
- Coronal
- the sinous cusps or enamel ridges on the molars of herbivore; a projecting ridge or structure
- Crest
- that portion of the tooth covered with enamel, which is normally visible in the oral cavity. See anatomic and clinical crown
- Crown
- a pronounced elevation on the occlusal surface
- Cusp
- elevations which extend in a mesial and distal direction from cusp tips. They form the buccal and lingual margins of the occlusal surfaces of posterior teeth.
- Cusp Ridges
- calcareous bodies which serve the purposes of teeth; a concretion which develops in the dental pulp as a part of the aging process.
- Denticles
- marks the fushion areas between adjacent cusps and other major parts of a tooth
- Developmental groove
- a “V-shpaed†space between the proximal surfaces of two adjoining, contacting teeth
- Embrasure
- a cleft or crevice in a tooth surface resulting from the imperfect fusion of the enamel of the adjoining cusps or lobes
- Fissure
-
a passage perforating hard tissues that transmits either vessels and
or nerves - Foramen (foramina)
- a shallow depression or concavity on the surface of the tooth (see central f, lingual f, triangular f)
- Fossa
- the region of a multi-rooted tooth where the roots divide
- Furcation
- a shallow, linear depression on the surface of a tooth (see supplemental g, developmental g)
- Groove
- The incisal portion of an anterior tooth.
- Incisal Ridge
- A broad, shallow depression on the lingual surface of an incisor or canine.
- Lingual Fossa
- A division of a tooth crown formed from a distinct point of calcification.
- Lobe
- A rounded or conical prominence on the incisal ridge of a newly erupted incisor.
- Mamelon
- Elevated crests which form the mesial and distal margins of the occlusal surfaces of the posterior teeth, and the lingual surfaces of the anterior teeth.
- Marginal Ridges
- A place in which something is nurtured
- Nidus (pl. Nidi)
- An elevated crest comprised of the triangular ridge of the distobuccal cusp and the distal ridge of the mesiolingual cusp.
- Oblique ridge
- A sharp depression usually located at the junction of two or more developmental grooves or at the termination of a single developmental groove.
- Pit
- A depression extending longitudinally on the mesial or distal surface of a root.
- Proximal root concavity
- The narrow area of the pulp chamber within the root. (Root canal).
- Pulp canal
- The expanded cavity within the tooth that contains the pulp.
- Pulp chamber
- A liner elevation on the surface of a tooth.
- Ridge
- The portion of a tooth covered with cementum and normally embedded in the alveolar process.
- Root
- See pulp canal.
- Root canal
- That portion or a multirooted tooth between the cervical line and furcation of the roots.
- Root trunk
- A fold or crease. The irregular ridges of the membrane of the palate.
- Ruga (pl. rugae)
- A small sac or cyst.
- Saccule
- An elongated valley in the surface of a tooth formed by the inclines of adjacent cusps or ridges which meet at an angle.
- Sulcus
- An indistinct liner depression, irregular in extent and direction that does not demarcate major divisional portions of a tooth.
- Supplemental groove
- The triangular ridges of a buccal and a lingual cusp that join to form a more or less continuous elevation extending transversely across the occlusal surface of a posterior tooth.
- Transverse ridge
- A shallow depression on the occlusal surfaces of posterior teeth located within the confines of the mesial or distal marginal ridges.
- Triangular fossa
- Prominent elevations, triangular in cross-section, which extend from the tip of a cusp towards the central portion of the occlusal surface of a tooth.
- Triangular ridges
- A division into three parts or branches, as the three roots of a maxillary first molar.
- Trifurcation
- A small elevation on the crown of a tooth possibly by excessive accumulation of enamel.
- Tubercle