well, that's unique
Curved, angled, or "dancing" roots
dilaceration
forms around the crown of an unerupted or developing tooth. Most common location = unerupted or impacted 3rd molars
Dentigerous Cyst (Follicular Cyst)
Median anterior maxillary cyst, incisive canal cyst. Most common sutural cyst. Proliferation of epithelial cells at the nasopalatine duct. Well circumscribed radiolucent area on anterior part of the maxilla at the incisive papillae or nasopalatine canal
Nasopalatine Duct Cyst
most commonly congenitally missing tooth
3rd molar
microdont
tooth cannot erupt due to a physical obstruction
impacted
Develops in place of a tooth. Most common area = 3rd molars or behind 3rd molars
Primordial cyst
•Soft tissue sutural cyst - Extra osseous
•Clinical appearance – swelling at base of the nose that can be seen under the upper lip and the nasal floor
Nasolabial cyst
tooth condition when someone is without teeth (partial or full)
anodontia
bigger than normal tooth
macrodont
a deciduous tooth in which the bone has fused to cementum and dentin, preventing exfoliation
ankylosed
•Expansive lesion that can move teeth and resorb tooth structure. Unique histological appearance. Frequent recurrence
•Most often in mandibular 3rd molar
•Well-defined, multilocular radiolucent
Odontogenic Keratocyst
This cyst contains trapped epithelium and cells of mesoderm and endoderm. May be found in submental region (floor of the mouth).
dermoid cyst
supernumerary tooth located between maxillary central incisors
mesiodens
Tooth with enlarged crown, short roots, large pulp chamber
Teeth united by cementum only. Seen most often in maxillary molars and supernumerary teeth.
concresecence
•Named for location
•Most often seen in mandibular cuspid and premolar area
•Mostly in males
Lateral Periodontal Cysts
Pseudocyst. Well-defined, cyst-like radiolucency observed in the posterior of the mandible. Actually it is a lingual depression in the mandible, surrounding normal salivary gland tissue
Stafne Defect (Static Bone Cyst)
tooth present at birth
neonatal tooth
this anomaly, occurring most often on mandibular premolars, displays with a different size and shape of the enamel as an accessory cusp is present on the occlusal surface
dens evaginatus
A tooth is said to be _________ when it does not erupt because of a lack of eruptive force
embedded
Located in soft tissue. Appears as a small bulge or swelling of attached gingiva or interdental papillae.
gingival cyst
well-defined pear shaped radiolucency located between the roots of the maxillary lateral incisor and cuspid (page 172)
globulomaxillary cyst
union of two normally separated tooth gems
fusion
single tooth germ attempts to slip into two teeth
gemination