Term
| what are the rounded or pointed areas on a tooth? |
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Definition
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Term
| what are 5 elevations found on teeth? |
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Definition
(1) cusps
(2) cingula (cingulum)
(3) tubercles
(4) mamelons
(5) perikymata |
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Term
what is the rounded, somewhat pointed pyramid shaped
structure on a tooth called? |
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Definition
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Term
| what is the pointed part on the cusp called? |
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Definition
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Term
| how many cusps do teeth typically have? |
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Definition
1 to 5
canines/cuspids have 1 cusp
premolars or bicuspids have 2 or 3 cusps
molars have 4 or 5 cusps |
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Term
| how are cusps located on the cuspid and posterior teeth named? |
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Definition
after the closest tooth surface or line angle
ex: buccal cusp, mesiobuccal cusp |
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Term
a cusp is a rounded, pyramid shaped structure with four
ridges: |
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Definition
(1) mesial cusp ridge
(2) distal cusp ridge
(3) buccal cusp ridge (cuspids have a facial or labial cusp ridge)
(4) triangular ridge (from cusp
tip to central groove; cuspids have a lingual ridge) |
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Term
| what are linear “bulges” or elevations named for their location called? |
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Definition
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Term
| what are 6 types of linear ridges? |
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Definition
(1) cusp ridges (mesiobuccal cusp ridge, etc)
(2) marginal ridges
(3) triangular ridges
(4) transverse ridges
(5) oblique ridges
(6) cervical ridges |
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Term
| what borders the medial and distal areas on both anterior and posterior teeth? |
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Definition
| mesial and distal marginal ridges |
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Term
| two ridges result from two ridges joining to form one ridge: |
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Definition
(1) transverse ridge
(2) oblique ride |
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Term
what ridge forms when the buccal triangular ridge meets the
lingual triangular ridge? |
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Definition
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Term
| what ridge is only on maxillary molars? |
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Definition
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Term
| a tubercle is an elevation on a tooth that is... |
|
Definition
(1) smaller than a cusp
(2) deviates from the typical form/not a “normal” finding-- though common
(3) variable in size and shape |
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Term
| where is a tubercle most likely to be found? |
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Definition
| on the lingual surface of the maxillary teeth |
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Term
| what is the bulge in the gingival third of the facial surface of an anatomic crown? |
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Definition
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Term
| where are cervical ridges commonly found? |
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Definition
on the mesiobuccal cusp of mandibular second molars (buccal cervical ridge) and is usually
very subtle |
|
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Term
| where is the buccal cervical ridge found? |
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Definition
| near cementoenamel junction [CEJ] on buccal outline of mesiobuccal cusp |
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Term
| what is the sloping area between two cusp ridges that are named for these two cusp ridges? |
|
Definition
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Term
|
Definition
(1) distal cusp ridge of buccal cusp
(2) buccal (cusp) ridge
(3) mesial cusp ridge of buccal cusp
(4) mesial marginal ridge
(5) mesial cusp ridge of lingual cusp
(6) distal cusp ridge of lingual cusp
(7) distal marginal ridge
(8) triangular ridge of buccal cusp
(9) triangular ridge of lingual cusp |
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Term
| what are the shallow, bowl-like depressions often with grooves or pits? |
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Definition
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Term
| incisors have a fossa that is... |
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Definition
| broad and shallow on the lingual side (sometimes with a lingual pit) |
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Term
| three-cusped premolars and most molars have which three fossae? |
|
Definition
(1) mesial fossa
(2) central fossa
(3) distal fossa |
|
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Term
|
Definition
(1) central fossa
(2) lingual fossa
(3) mesial fossa
(4) distal fossa
(5) triangular fossa |
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Term
| what is a small depressed area where grooves join or terminate that is usually located in the deepest part of the fossa? |
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Definition
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Term
| what are the primary anatomy or major grooves/developmental grooves/primary grooves in the teeth? |
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Definition
| central groove, triangular grooves, fossa grooves |
|
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Term
| what are the secondary anatomy or minor grooves/supplemental grooves/secondary grooves in the teeth? |
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Definition
| they branch from primary grooves and are usually not as deep as primary grooves |
|
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Term
| how are central grooves positioned? |
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Definition
|
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Term
| how are major grooves named? |
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Definition
| for the surface or line angle they “aim” toward |
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Term
| what is a cleft or deep ditch in the surface of a tooth, usually due to imperfect fusion of adjoining enamel lobes that is distinguished from a groove or sulcus? |
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Definition
| fissure or enamel fissure |
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Term
| what is a broad V-shaped depression or valley running mesiodistally on the occlusal surfaces of posterior teeth? |
|
Definition
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