Pathology

-One or more teeth smaller than normal -True Generalized= all teeth uniformly smaller
-Relative Generalized= Man and max are larger than normal, but teeth are normal size

-most commonly affects lateral incisors and maxillary thirrd molars

-One or more teeth that are larger than normal
-True Generalized= All teeth uniformly larger
-Relative Generalized= Man and Max are smaller than normal but teeth are normal size

-Congenital absence of teeth

-Rare
-Genetic
-Hair Absent
-Inability to regulate body temp.
-usually not total ( Hypodontia or partial)

-Absence of one or more teeth.
- most common

-More teeth than the normal number
-90% in maxilla
- Most common:
~mesiodens
~Maxillary 4th molars( paramolars)
~Max. lateral incisors
- mandibular
~ Premolars

-Deciduous teeth that are present at birth
-Most commonly one or two teeth
-most commonly mandibular central incisors

-1st thirty days of life

-Idiopathic or associated with Rickets, cleidocranial dysplasia
-Gingival fibramatosis- dense fibrous connective tissue

Physical barriers- crowding, supernumerary teeth, odontogenic cyst and tumors

Most common-3rd molars, max. cuspids, man. 2nd molars

- Sharp bend or angulation invloving the root

-Molar with an enlongated crown and apically placed furcation and enlarged, rectangular coronal pulpal chamber
-results from damage to Hertwigs's sheath (determines shape)

-The tendency to revert to ancestral type.
-Evolutional throwback, such as traits reappearing which had disappeared.

-deep enamel- lined pit that extends into the dentin
-Maxillary lateral incisors, max central incisors
- causes- pulpitis, pulpal necrosis and inflammatory periapical disease

-Mesiolingual of maxillary 1st molars