Pacific Coast Society of Orthodontists Bulletin Fall 2019 - 50

Case Report

marginal ridge discrepancies could have been
accomplished, but the patient refused to stay in
braces any longer as she was so satisfied with the
treatment outcome. A posttreatment panoramic
radiograph showed acceptable root parallelism,
and there were no significant signs of root resorption or alveolar bone resorption (Figure 9). Clinical
and periodontal evaluations showed healthy
periodontium and stable dentition.

Figure	10. Overall (A), maxillary (B), and mandibular (C) cephalometric
superimpositions. Black: pretreatment, 15 years, 5 months; red: posttreatment, 17 years, 1 month

Editor's Comment
Although a true relationship between UPC and
skeletal asymmetry has not been established,
some studies have found that UPC can affect
both skeletal and functional growth,1 and more
asymmetric condyles are typically seen in UPC patients.2 The authors presented a well-treated case
with unilateral anterior and posterior crossbite
using a modified palatal expander. The design of
this modification was inspired by previous studies,3,4 but it is suggested that the effectiveness of
this expander should be further investigated.
References
1. Iodice G, Danzi G, Cimino R, Paduano S, Michelotti A.
Association between posterior crossbite, skeletal, and
muscle asymmetry: a systematic review. Eur J Orthod
2016;38:638-651.
2. Kilic N, Kiki A, Oktay H. Condylar asymmetry in unilateral posterior crossbite patients. Am J Orthod Dentofacial Orthop 2008;133:382-387.
3. Ileri Z, Basciftci FA. Asymmetric rapid maxillary
expansion in true unilateral crossbite malocclusion:
a prospective controlled clinical study. Angle Orthod
2015;85:245-252.
4. Toroglu MS, Uzel E, Kayalioglu M, Uzel I. Asymmetric
maxillary expansion (AMEX) appliance for treatment of
true unilateral posterior crossbite. Am J Orthod Dentofacial Orthop 2002;122:164-173.

Figure	11. ABO Cast-Radiograph Evaluation score

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PCSO	Bulletin	 	 Fall	2019



Pacific Coast Society of Orthodontists Bulletin Fall 2019

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