INHERITED DENTIN DEFECTS

Ahmed Abdulwahab UG: 1330095

INHERITED DENTIN DEFECTS

Two categories of heritable dentin defects

Dentinogenesis imperfecta Dentin dysplasia

Dentinogenesis imperfecta• is a disorder of tooth development. • This condition causes the teeth to be discolored and translucent.

Teeth are also weaker than normal, making them prone to rapid wear, breakage, and loss. • These problems can affect both primary (baby) teeth and

permanent teeth.

Dentinogenesis imperfecta• two types of dentinogenesis imperfecta with similar dental abnormalities.• Type I occurs in people who have osteogenesis imperfecta• Type II usually occur in people

without other inherited disorders

Dentinogenesis imperfectaClinical signs :• normal dentin formation is confined to the layer next to the enamel and

cementum;• Disordered dentin contains a few tubules;• The roots of shell teeth are short;• The primary teeth may be exfoliated prematurely;• Teeth are characteristic reddish brown to gray opalescent color;

Dentinogenesis imperfecta• Radiographs show slender roots and bulbous crowns;• The pulp chamber is small, or entirely absent;• Pulp canals are small and ribbon-like;• Periapical rarefaction Is the primary dentition is occasionally

observed;• Multiple root fractures are often seen, particularly in older

patients.

Dentinogenesis imperfectaTreatment: • The placement of the stainless steel crowns

on the primary posterior teeth may be considered as a means of preventing gross abrasion of the tooth structure;

• Full-coverage restorations (On anterior teeth are being successfully used for esthetic improved when full-coverage restorations are unnecessary).

• Teeth with periapical rarefaction and root fracture should be removed;

Dentin dysplasiaIt is presence of normal enamel but atypical dentin with abnormal pulpal morphology. There are two types:

Radicular Coronal

Dentin dysplasia• In the radicular type,• the roots of teeth are shorter than normal and the pulp

chamber may be nearly gone.• The color of the crowns are usually normal or may be

slightly opalescent and blue or brown.

Dentin dysplasiaIn the coronal type,• the pulps are enlarged• Primary dentition appears opalescent;• Permanent dentition has normal color;• Radiographically exhibits a thistle pulp stones.

Dentin dysplasiaTreatment• is directed toward the specific symptoms that are

apparent in each individual. • Because permanent teeth are often unaffected, no

specific or unusually dental therapy is necessary.• Recommended treatment may include regular

monitoring by dental specialists and ongoing preventive dental care.

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ATTENTIONAhmed Abdulwahab UG: 1330095