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References

Marshall S In: Huang G, Richmond S, Vig K Oxford: Blackwell Publishing Ltd; 2011
Orthodontic treatment for posterior crossbites. 2014. http://www.ncbi.nlm.nih.gov/pubmed/25104166
Marshall S, English JJ, Huang G Long-term stability of maxillary expansion. Am J Orthod Dentofacial Orthop. 2008; 87:584-588
Malandris M, Mahoney E Aetiology, diagnosis and treatment of posterior cross-bites in the primary dentition. Int J Paediatr Dent. 2004; 14:155-166
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Managing the transverse dimension

From Volume 10, Issue 3, July 2017 | Pages 86-94

Authors

Catherine A Brierley

BDS(Hons), MFDS RCS, MClinDent, Orthodontic, Post-CCST

Sheffield and Chesterfield, Chesterfield, Derbyshire, UK

Articles by Catherine A Brierley

Jonathan Sandler

BDS (Hons), MSc, PhD, MOrth RCS, FDS RCPS, BDS(Hons), MSc, PhD, FDSRCPS, MOrth RCS, Consultant Orthodontist, , DOrth RCS

Consultant Orthodontist, Chesterfield Royal Hospital, Chesterfield, UK

Articles by Jonathan Sandler

Email Jonathan Sandler

Abstract

The management of transverse discrepancies is one of the most challenging aspects of high quality orthodontic treatment. There are many different methods of managing the transverse dimension. We will outline the indications, advantages and disadvantages of these methods.

CPD/Clinical Relevance: Transverse discrepancies are a common malocclusion which clinicians need to be able to manage.

Article

A crossbite exists when the buccal cusps of the mandibular teeth occlude buccally to the buccal cusps of the maxillary dentition. The estimated prevalence of posterior crossbites ranges from 5% to 23% with a greater prevalence of unilateral crossbite with associated mandibular shift.1 Most posterior crossbites (50% to 90%) persist when the permanent teeth erupt though, for a minority, the crossbite self corrects.2 Maxillary transverse expansion is widely used in orthodontic treatment and indications for maxillary expansion include:

Some authors report that, if left untreated, a crossbite with associated mandibular shift could increase the risk of the individual developing bruxism,4 facial asymmetry and temporomandibular joint dysfunction (TMD). The relationship between posterior crossbites and TMD has been long debated and the link is unclear.5 Other reported indications for maxillary expansion include improved nasal breathing, however, these changes are of questionable significance.6 It has also been thought to have an effect on nocturnal enuresis.7

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