Applying extrusive orthodontic force without compromising the obturated canal space

作者：Keinan David^*; Szwec Jerard; Matas Avital; Moshonov Joshua; Yitschaky Oded

来源：Journal of the American Dental Association, 2013, 144(8): 910-913.

DOI：10.14219/jada.archive.2013.0208

• Forced eruption
• crown-root fracture
• orthodontic extrusion
• dental trauma

Background. Complicated tooth fractures can be the unfortunate result of orofacial trauma and can offer a therapeutic challenge for the dentist. A conservative solution for gaining supragingival sound tooth structure often includes orthodontic forced eruption. Usually, this procedure is carried out by applying extrusive force after placing a provisional acrylic Richmond crown on the tooth. However, this long-lasting dental treatment. may jeopardize the coronal seal of the riot canal space, leading to microleakage and endodontic failure.
Case Description. Orthodontic forced eruption demands application of force to an attachment connected to the remaining short clinical crown. In this article, the authors describe a case in which they used a new technique for orthodontic forced eruption of a traumatized tooth, using an extracanal attachment to apply extrusion force, and discuss its possible advantages and limitations.
Conclusions. An extracanal attachment approach for orthodontic forced eruption without compromising the obturated canal space can be a solution for posttraumatic crown fracture.
Practical Implications. The described procedure for forced eruption by using an extracanal pin attachment is efficient and convenient and does not require the clinician to apply force directly to the provisional crown. Therefore, during the application of force, there is less risk of loosening the provisional crown, and the canal space is kept intact with either the final restoration or dressing material.

• 出版日期2013-8