Praeger, Thomas-Michael, Brochhagen, Hans Georg, Mischkowski, Robert, Jost-Brinkmann, Paul-Georg and Mueller-Hartwich, Ralf (2015). Bone condition of the maxillary zygomatic process prior to orthodontic anchorage plate fixation. J. Orofac. Orthop., 76 (1). S. 3 - 14. MUNICH: URBAN & VOGEL. ISSN 1615-6714

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Abstract

The clinical success of orthodontic miniplates depends on the stability of the miniscrews used for fixation. For good stability, it is essential that the application site provides enough bone of good quality. This study was performed to analyze the amount of bone available for orthodontic miniplates in the zygomatic process of the maxilla. We examined 51 dental CT scans (Somatom Plus 4; Siemens, Erlangen, Germany) obtained from 51 fully dentate adult patients (mean age 24.0 +/- 8.1 years; 27 male and 24 female) prior to third molar surgery. The amount of bone in the zygomatic process region at the level of the first molar root tips and at several other cranial levels as far as 15 mm from the root tips was measured Bone thickness at the root tip level averaged 4.1 +/- 1.0 mm; the lowest value measured at this level in any of the patients was 2.7 mm. Bone thickness averaged 8.3 +/- 1.0 mm at 15 mm cranial to the root tips; 6.9 mm was the lowest value. The zygomatic process appears to provide sufficient bone to accommodate screws for miniplate fixation. While some patients may possess a borderline amount of bone at more caudal levels, lack of volume is not a problem near the zygomatic bone.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Praeger, Thomas-MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brochhagen, Hans GeorgUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mischkowski, RobertUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jost-Brinkmann, Paul-GeorgUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mueller-Hartwich, RalfUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-417452
DOI: 10.1007/s00056-014-0261-5
Journal or Publication Title: J. Orofac. Orthop.
Volume: 76
Number: 1
Page Range: S. 3 - 14
Date: 2015
Publisher: URBAN & VOGEL
Place of Publication: MUNICH
ISSN: 1615-6714
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SPIRAL COMPUTED-TOMOGRAPHY; SKELETAL ANCHORAGE; LINEAR MEASUREMENTS; SUCCESS RATE; OPEN-BITE; PROTRACTION; PLACEMENT; THICKNESS; AUGMENTATION; MINISCREWSMultiple languages
Dentistry, Oral Surgery & MedicineMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/41745

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