Dentine dysplasia is a rare genetic disorder characterized by abnormal dentin formation and pulp morphology. There are two main types - Shield Type I, which affects the roots and causes extremely small, translucent teeth with excessive mobility. Shield Type II affects both the roots and crowns, resulting in differences in tooth color and normal root size. Radiographs reveal short, conical roots with obliterated pulp chambers and canals for Shield Type I, and a "thistle tube" appearance with multiple pulp stones for Shield Type II. Proper oral hygiene and endodontic treatments are recommended for management.

1. Dentine dysplasia

2. General information
It is a rare disturbance of dentine formation,
characterised by normal but a typical dentine
formation, with abnormal pulp morphology
it represents an autosomal dominant trait
some systemic diseases are also manifested as
dentin dysplasia features. They are calcinosis cutis,
vitaminosis d and tumoural calcinosis

3. Classification
According to shield
•Shield type I – dentine dysplasia
•Shield type II – anomalous dysplasia
According to Witkop
•Radicular dentine dysplasia
•coronal dentine dysplasia

4. Clinical features – shield type I
Also called radicular dentine dysplasia
Slightly Amber and translucent teeth
Malalignment and malpositioning due to extreme
mobility
Root size is extremely small

5. Clinical features – shield Type II
Root is normal in size
there is significant differences
of colour in both the dentitions

6. Radiographic features
Radicular
• Short roots with sharp conical and apical
constriction
• pulp chamber and canals are obliterated before
eruption
Coronal
• thistle tube appearance
• Teeth show multiple pulp stones

7. Diagnosis
Unusual mobility of tooth without
periodontal involvement
Very short root of the teeth
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8. Management
Oral hygiene
should be
maintained
Retrograde
endodontic
treatment
Periapical
curettage
should be
done