Relapse and stability of surgically assisted rapid maxillary expansion, an anatomical biomechanical study

M.J. Koudstaal, J.B.J. Smeets, G.J. Kleinrensink, A.J.M. Schulten, K.G.H. van der Wal

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    Purpose: This anatomic biomechanical study was undertaken to gain insight into the underlining mechanism of tipping of the maxillary segments during transverse expansion using tooth-borne and bone-borne distraction devices. Materials and Methods: An anatomic biomechanical study was performed on 10 dentate human cadaver heads using tooth-borne and bone-borne distraction devices. Results: The amount of tipping of the maxillary halves was greater in the tooth-borne group, but the difference was not significant. Four of the specimens demonstrated an asymmetrical widening of the maxilla. Conclusions: Segmental tipping was seen in both study groups. In this anatomic model, tooth-borne distraction led to greater segmental tipping compared with bone-borne distraction. Keep in mind, however, that this anatomic model by no means depicts a patient situation, and any extrapolation from it must be done with great care. The fact that the tooth-borne group demonstrated greater tipping might reflect the general opinion that bone-borne distraction causes less segmental angulation than tooth-borne distraction. Some tipping was seen in the bone-borne group, suggesting that overcorrection to counteract relapse will be necessary with this treatment modality. © 2009 American Association of Oral and Maxillofacial Surgeons.
    Original languageEnglish
    Pages (from-to)10-14
    JournalJournal of Oral and Maxillofacial Surgery
    Volume67
    DOIs
    Publication statusPublished - 2009

    Fingerprint

    Dive into the research topics of 'Relapse and stability of surgically assisted rapid maxillary expansion, an anatomical biomechanical study'. Together they form a unique fingerprint.

    Cite this