Envisioning Post-treatment Occlusions after Space Closure Using Temporary Skeletal Anchorage Devices

Abstract

Missing posterior teeth and posterior tooth extractions are commonly seen and needed within orthodontic practices. With the invention of temporary skeletal anchorage devices (TSADs), clinicians can now effectively close posterior tooth spaces. Various molar occlusions are discussed to help clinicians envision post-treatment occlusions after posterior teeth space closure using TSADs.

Factors associated with spontaneous mesialization of impacted mandibular third molars after second molar protraction

“…In cases of anterior crowding or protrusion, incisors can be aligned and retracted to close the space due to missing posterior teeth. 4,5 In contrast, in patients with no anterior crowding or protrusion, the space can be closed through molar protraction, which can be challenging for clinicians. Using temporary anchorage devices (TADs), the molars could be more easily protracted.…”

Space closure by miniscrew-assisted mesialization of an upper third molar and partial vestibular fixed appliance: A case report

“…In such cases, miniscrews can provide support for dental anchorage, thereby enabling the use of partial orthodontic appliances to attain complicated dental movements such as bodily mesialization of the posterior teeth [10]. Baik et al argued that protraction of the posterior teeth in the absence of crowding or labial protrusion can be a valid therapeutic option and, in such cases, the use of skeletal anchorage is particularly indicated [23,24]. The success rate of these cases seems to be greater in the maxillary arch, as there is a reduced amount of cortical bone [25], and a lower tendency to postextractive bone resorption of the crest over time [26], as compared to the mandibular arch.…”