Abstract
In Part 2 of this article, we highlight the differences between the open and closed exposure techniques in the management of palatally displaced canines (PDCs), the mechanical principles of alignment and the management of ankylosis.
References
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Management of the palatally displaced maxillary canine. Part 2: exposure and orthodontic alignment
From Volume 15, Issue 4, October 2022 | Pages 175-180
Article
In this article, the differences between the open and closed exposure techniques are discussed, before focusing on the basic mechanical principles of alignment and the management of true ankylosis.
The evidence base in this area stems from two well-conducted, multicentre randomized clinical trials (RCTs) that investigated the effectiveness of open versus closed exposures for patients with PDCs. In one of these RCTs, Parkin et al reported that there were no differences between the techniques in terms of periodontal health, perceived discomfort, operating time, aesthetics and cost-effectiveness.1,2 Although there were also no statistically significant differences in the mean active alignment time of the two groups, the associated 95% confidence intervals were wider for the closed exposure group.3 This suggests that there may be less variability associated with the open technique, which may be reflective of the orthodontist's ability to visualize the direction of traction with this method.
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