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<italic>Objective:</italic> To examine the effects of face mask therapy with and without associated rapid maxillary expansion (RME) in adolescent patients presenting with skeletal Class III malocclusion characterised by maxillary retrognathism.
<italic>Methods:</italic> Case records consisting of lateral cephalograms and hand-wrist films of 43 patients with hypoplastic maxillary Class III malocclusions treated using a face mask with and without an RME were analysed. The patients were divided into two groups; Group A (N = 27) were treated with a face mask coupled with rapid maxillary expansion and patients in Group B (N = 16) were treated with a face mask appliance only. Ten cephalometric linear and 9 angular variables were measured to assess the dentofacial changes. Within group and between groups comparisons were determined by a paired <italic>t-</italic>test and Student’s <italic>t-</italic>test, respectively.
<italic>Results:</italic> Forward displacement of the maxilla and a clockwise rotation of the mandible occurred in both groups. The maxillarymandibular relationship improved and soft-tissue changes resulted in a more convex profile. The maxillary incisors moved forward only in Group B subjects but the mandibular incisors moved backward in both groups.
<italic>Conclusions:</italic> Face mask therapy with and without an associated RME improved skeletal Class III malocclusion by a combination of skeletal and dental changes. These results suggested that the use of an RME should be based on clinical criteria rather than assisting the Class III correction.
</abstract>

Objective: To examine the effects of face mask therapy with and without associated rapid maxillary expansion (RME) in adolescent patients presenting with skeletal Class III malocclusion characterised by maxillary retrognathism.
Methods: Case records consisting of lateral cephalograms and hand-wrist films of 43 patients with hypoplastic maxillary Class III malocclusions treated using a face mask with and without an RME were analysed. The patients were divided into two groups; Group A (N = 27) were treated with a face mask coupled with rapid maxillary expansion and patients in Group B (N = 16) were treated with a face mask appliance only. Ten cephalometric linear and 9 angular variables were measured to assess the dentofacial changes. Within group and between groups comparisons were determined by a paired t-test and Student’s t-test, respectively.
Results: Forward displacement of the maxilla and a clockwise rotation of the mandible occurred in both groups. The maxillarymandibular relationship improved and soft-tissue changes resulted in a more convex profile. The maxillary incisors moved forward only in Group B subjects but the mandibular incisors moved backward in both groups.
Conclusions: Face mask therapy with and without an associated RME improved skeletal Class III malocclusion by a combination of skeletal and dental changes. These results suggested that the use of an RME should be based on clinical criteria rather than assisting the Class III correction.

The effects of face mask therapy with and without rapid maxillary expansion in adolescent patients

Department Orthodontics, Faculty of Dentistry

Australasian Orthodontic Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

Objective: To examine the effects of face mask therapy with and without associated rapid maxillary expansion (RME) in adolescent patients presenting with...

The effects of face mask therapy with and without rapid maxillary expansion in adolescent patients

Pubblicato online: 01 ago 2023

Pagine: 63 - 71

Ricevuto: 01 ago 2011

Accettato: 01 mar 2012

DOI: https://doi.org/10.2478/aoj-2012-0010

© 2012 İbrahim Yavuz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.