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Quintessence Publishing: Journals: ORTHODONTICS
The Art and Practice of Dentofacial Enhancement

Formerly World Journal of Orthodontics

Edited by
Rafi Romano, DMD, MSc (Editor-in-Chief)

ISSN 2160-2999 (print) / ISSN 2160-3006 (online)

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Yearbook 2012
Volume 13 , Issue 1

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The effects of fixed and removable face masks on maxillary deficiencies in growing patients

Abdolreza Jamilian, DDS/Rahman Showkatbakhsh, DDS/Tannaz Taban, DDS

Aim: To compare the effects of two different types of face masks in the treatment of Class III malocclusions with maxillary deficiency in growing patients. Methods: Forty-three patients (21 boys and 22 girls) with maxillary deficiencies were selected. Twenty-one patients (10 boys and 11 girls) with a mean age of 8.9 1.4 years were treated with maxillary removable appliances and face masks. Twenty-two patients (10 boys and 12 girls) with a mean age of 9.3 1.2 years were treated with maxillary fixed appliances and face masks. Lateral cephalograms obtained at the beginning and end of the study were analyzed. Results: Paired t tests and Wilcoxon tests showed that SNA and ANB significantly increased in both groups. The Mann-Whitney test showed that there were no statistically significant differences between the two groups except for U1-SN, which increased by 6.2 7.1 degrees in the removable face mask group and 11.1 6.9 degrees in the fixed face mask group (P < .02). Conclusion: Both treatment modalities were successful in moving the maxilla forward. However, the maxillary incisors had more labial inclination in the fixed appliance group. ORTHODONTICS (CHIC) 2012;13:e37e43.

Key words: Class III malocclusion, fixed face mask, growth modification, maxillary deficiency, removable face mask

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