In the evaluation of earlier radiographs taken just after the trauma, external resorption associated with an ectopic maxillary canine was noted in the middle third of the root of tooth 22 (Figure-1A, 1B)
This report shows that MTA can be used in a non-surgical approach for the treatment of external resorption caused by ectopic eruption of an adjacent tooth complicated by luxation injury.
The most common type of external resorption is inflammatory root resorption, caused by external pressure exerted on the tooth by the force of the orthodontic movement, coexistence of tumors, cysts and impacted teeth .
The process of external resorption due to pressure begins from the cementum.
The radiological criteria for exclusion included external resorption
internal resorption periapical and inter radicular radiolucency pulp calcifications and pathological root resorption.
The use of 30% H2O2 is not recommended, always due to the risk of external resorption
presenting as an intra-coronal radiolucent lesion in a pre-eruptive tooth.
The most frequent sequela was external resorption (18.
Luxation was the most frequent traumatic lesion, and coronal discoloration and external resorption were the most prevalent sequelae.
Therefore, the radiological appearance of external resorption
of a crown has to be distinguished from pre-eruptive radiolucent lesions such as caries, internal resorption and hypoplasia [Wood and Crozier, 1985; Rankow et al.
No pulp calcifications or external resorption
was seen [Figure 3].
Most root fractures displayed transient external resorption
around the fracture lines.