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Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie

Published in:

01-05-2015 | Original article

Association between changes in soft and hard tissue after early chin cup treatment

Authors: Dr. J.A. Alarcón, M.A. Requena, A.C. Delgado, E. González, C. Martín

Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Issue 3/2015

Abstract

Objective

To assess the soft tissue and to determine the potential association between changes in soft and hard tissue after early chin cup treatment in prognathic children.

Materials and methods

A total of 42 children (21 boys, 21 girls) with skeletal Class III malocclusion due to mandibular prognathism were examined before (mean age, 8.5 ± 0.5 years) and after (mean age, 11.4 ± 0.6 years) chin cup treatment. Data were compared with 25 untreated matched controls (12 boys, 13 girls) with mean ages of 8.5 ± 0.5 years at the first and 11.7 ± 0.5 years at the second observation. Lateral cephalograms were taken before and after 36 months of treatment/observation. We evaluated the changes in hard and soft tissue and the correlations between these changes in both groups.

Results

The skeletal and soft-tissue facial profiles improved significantly in the treated patients, mainly due to changes in the mandible. The chin cup group revealed significant reductions in the facial-convexity angle and lower-lip inclination, leading to a remarkable improvement in the soft-tissue facial profile. We noted similar correlations between changes in the hard and soft tissue in both groups, except for a significant correlation between a pogonion retrusion and reduction in the facial-convexity angle detected only in the chin cup group. Various correlations were observed between corresponding soft and dentoalveolar changes between groups.

Conclusion

Soft-tissue changes accompanied the underlying skeletal and dentoalveolar tissue changes after chin cup treatment.

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Title: Association between changes in soft and hard tissue after early chin cup treatment
Authors: Dr. J.A. Alarcón
M.A. Requena
A.C. Delgado
E. González
C. Martín
Publication date: 01-05-2015
Publisher: Springer Berlin Heidelberg
Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Issue 3/2015
Print ISSN: 1434-5293
Electronic ISSN: 1615-6714
DOI: https://doi.org/10.1007/s00056-015-0286-4

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Association between changes in soft and hard tissue after early chin cup treatment

Abstract

Objective

Materials and methods

Results

Conclusion

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Abstract

Objective

Materials and methods

Results

Conclusion

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