From Volume 13, Issue 2, April 2020 | Pages 89-90
A common way of treating impacted teeth is by orthodontic extrusion. When the teeth are deeply buried in the alveolar bone a closed eruption technique is often indicated. When multiple teeth are impacted and need to be extruded in a particular sequence, it may be difficult to be sure which eruption chain is attached to a particular tooth. This case report demonstrates a novel way of identifying individual eruption chains.
Dental impaction can be defined as a tooth that is prevented from erupting into position because of a malposition, lack of space or other impediments.1 Although it has been reported to affect as many as 25% to 50% of the population, multiple impactions are less commonly seen.2
According to a review by Bishara, the causes of tooth impaction can be divided into generalized and localized factors.3 The more common localized and generalized factors are summarized in Table 1.
The impaction of multiple permanent teeth occurs less frequently than that of single teeth. Multiple impactions add significant complexity to treatment, often resulting in lengthened overall treatment time.
Factors reported to increase treatment complexity and time include:
During treatment there is a further risk of failure due to ankylosis, external root resorption, and/or root exposure during or after orthodontic tooth movement.
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