1. Premature eruption

2. General information
The eruption of teeth may occur
before their normal eruption time
in some cases tooth may be present
as Natal teeth are neonatal teeth

3. Aetiology
Familial pattern
Endocrine disorders secretion of several
endocrine organs like thyroid, adrenals and
gonads may alter the eruption rate of teeth. It
can also be occurred in adrenogenital syndrome

4. Clinical features
Usually only one or two teeth erupt early, mostly
deciduous and mandibular Central incisors
the teeth are mobile
may give rise to premature eruption of
permanent teeth

5. Delayed eruption
In some cases eruption
may be delayed
it may occur due to various
conditions

6. Aetiology
Systemic conditions like rickets,
cretinism and cleidocranial dysplasia
Local factors like fibromatosis gingiva
in which dense connective tissue does
not permit the eruption of teeth

7. Clinical features
Partially impacted teeth
deviation in eruption path
pseudo anodontia

8. Management
Extraction of teeth
and space maintainer
– extract the primary
teeth and use space
maintainers until the
permanent tooth
erupts