6.concrescence

1. concrescence

2. General information It is a form of fusion that occurs after the root and other major parts involved in the teeth are formed or when the roots of two or more teeth are united by cementum , below the cemento enamel junction.

3. Aetiology Developmental – space restriction during development resulting in extend of cementum of the position between closely approximated roots of teeth Inflammatory – in cases of inflammatory damage to the roots of teeth are repaired by cementum Traumatic injury – this may also lead to concrescence of teeth

4. Types True concrescence – if the roots are bound during development Acquired concrescence – if the condition occurs after development

5. Clinical features Common in maxillary second and third molar area Primary or secondary teeth are affected Usually are involved only two teeth roots are fused by cementum There may be malocclusion or the teeth may be impacted

6. Radiographic features Diagnosis is made by radiographs. It is not always possible to distinguish between concrescence, teeth in close contact and superimposed teeth

7. Diagnosis It is difficult to differentiate between fusion and concrescence Radiograph will show union of two teeth with the help of cementum

8. Management Dentist must be careful while doing extraction