Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2010 May 19:6:6.
doi: 10.1186/1746-160X-6-6.

Unilateral cross bite treated by corticotomy-assisted expansion: two case reports

Ali H Hassan  1 , Ali T AlGhamdi, Ahmad A Al-Fraidi, Aziza Al-Hubail, Manar K Hajrassy
Affiliations
Case Reports

Unilateral cross bite treated by corticotomy-assisted expansion: two case reports

Ali H Hassan et al. Head Face Med. .

Abstract

Background: True unilateral posterior crossbite in adults is a challenging malocclusion to treat. Conventional expansion methods are expected to have some shortcomings. The aim of this paper is to introduce a new technique for treating unilateral posterior crossbite in adults, namely, corticotomy-assisted expansion (CAE) applied on two adult patients: one with a true unilateral crossbite and the other with an asymmetrical bilateral crossbite, both treated via modified corticotomy techniques and fixed orthodontic appliances.

Methods: Two cases with asymmetric maxillary constriction were treated using CAE.

Results: In both cases, effective asymmetrical expansion was achieved using CAE, and functional occlusion was established as well.

Conclusions: Unilateral CAE presents an effective and reliable technique to treat true unilateral crossbite.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Initial intra-oral composite photograph of case 1.
Figure 2
Figure 2
Initial study model of case 1.
Figure 3
Figure 3
The unilateral asymmetry of the upper arch is shown.
Figure 4
Figure 4
The lingually positioned lower right 2nd premolar and the rotation of the right 2nd molar, masked the severity of the cross-bite.
Figure 5
Figure 5
Initial cephalogram of case 1.
Figure 6
Figure 6
Initial OPG of case1.
Figure 7
Figure 7
Surgical procedure of CAE. A &B: buccal and palatal incisions are made. C & D: full thickness flap is reflected. E: selective alveolar decortications lines and points are made. F & G: bone graft is placed. H & I: flap is sutured back.
Figure 8
Figure 8
Heavy labial bow used as the expanding appliance for case 1.
Figure 9
Figure 9
OPG showing the use of a miniscrew to upright the lower left third molar.
Figure 10
Figure 10
Final intraoral composite photograph of case 1.
Figure 11
Figure 11
Final study model of case 1.
Figure 12
Figure 12
Final cephalogram of case 1.
Figure 13
Figure 13
Final OPG of case 1.
Figure 14
Figure 14
Initial intra-oral composite photograph of case 2.
Figure 15
Figure 15
Initial study model of case 2.
Figure 16
Figure 16
Initial cephalogram of case 2.
Figure 17
Figure 17
Initial OPG of case 2.
Figure 18
Figure 18
Final intraoral composite photograph of case 2.
Figure 19
Figure 19
Final study model of case 2.
Figure 20
Figure 20
Final cephalogram of case 2.
Figure 21
Figure 21
Final OPG of case 2.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Kutin G, Hawes RR. Posterior cross-bites in the deciduous and mixed dentitions. Am J Orthod. 1969;56:491–504. doi: 10.1016/0002-9416(69)90210-3. - DOI - PubMed
    1. Thilander B, Myrberg N. The prevalence of malocclusion in Swedish schoolchildren. Scand J Dent Res. 1973;81:12–21. - PubMed
    1. Egermark-Eriksson I, Carlsson GE, Magnusson T, Thilander B. A longitudinal study on malocclusion in relation to signs and symptoms of cranio-mandibular disorders in children and adolescents. Eur J Orthod. 1990;12:399–407. - PubMed
    1. Heikenheimo KSK. Need for orthodontic intervention in five-year-old Finnish children. Proc Finn Dent Soc. 1987;83:165–169. - PubMed
    1. Proffit W. Contemporary orthodontics. 4. St Louis: C. V. Mosby; 2007.

Publication types