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Longitudinal growth changes in untreated subjects with Class II Division 1 malocclusion.
Am J Orthod Dentofacial Orthop. 2008 Jul; 134(1):125-37.AJ

Abstract

INTRODUCTION

The purpose of this longitudinal study was to compare the craniofacial growth changes in untreated subjects with Class II Division 1 malocclusion with those in subjects with normal (Class I) occlusion from the prepubertal through the postpubertal stages of development, as defined by a biological indicator of individual skeletal maturity (cervical vertebral maturation method).

METHODS

The Class II Division 1 sample consisted of 17 subjects (11 boys, 6 girls). The Class I sample also consisted of 17 subjects (13 boys, 4 girls). The lateral cephalograms of the subjects in both groups were analyzed at 6 consecutive stages of development, from CS1 through CS6. The statistical comparisons of the growth changes in the study groups were performed with Mann-Whitney U tests.

RESULTS

Craniofacial growth in subjects with untreated Class II malocclusion is essentially similar to that in untreated subjects with normal occlusion at all developmental intervals, with the exception of significantly smaller increases in mandibular length (P <0.001) at the growth spurt (interval CS3-CS4) and during the overall observation period (intervals CS1-CS6).

CONCLUSIONS

Class II dentoskeletal disharmony does not tend to self-correct with growth in association with worsening of the deficiency in total mandibular length and mandibular ramus height.

Authors+Show Affiliations

Department of Orthodontics, University of Rostock, Rostock, Germany.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18617112

Citation

Stahl, Franka, et al. "Longitudinal Growth Changes in Untreated Subjects With Class II Division 1 Malocclusion." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 134, no. 1, 2008, pp. 125-37.
Stahl F, Baccetti T, Franchi L, et al. Longitudinal growth changes in untreated subjects with Class II Division 1 malocclusion. Am J Orthod Dentofacial Orthop. 2008;134(1):125-37.
Stahl, F., Baccetti, T., Franchi, L., & McNamara, J. A. (2008). Longitudinal growth changes in untreated subjects with Class II Division 1 malocclusion. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 134(1), 125-37. https://doi.org/10.1016/j.ajodo.2006.06.028
Stahl F, et al. Longitudinal Growth Changes in Untreated Subjects With Class II Division 1 Malocclusion. Am J Orthod Dentofacial Orthop. 2008;134(1):125-37. PubMed PMID: 18617112.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Longitudinal growth changes in untreated subjects with Class II Division 1 malocclusion. AU - Stahl,Franka, AU - Baccetti,Tiziano, AU - Franchi,Lorenzo, AU - McNamara,James A,Jr PY - 2006/04/01/received PY - 2006/06/01/revised PY - 2006/06/01/accepted PY - 2008/7/12/pubmed PY - 2008/8/22/medline PY - 2008/7/12/entrez SP - 125 EP - 37 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 134 IS - 1 N2 - INTRODUCTION: The purpose of this longitudinal study was to compare the craniofacial growth changes in untreated subjects with Class II Division 1 malocclusion with those in subjects with normal (Class I) occlusion from the prepubertal through the postpubertal stages of development, as defined by a biological indicator of individual skeletal maturity (cervical vertebral maturation method). METHODS: The Class II Division 1 sample consisted of 17 subjects (11 boys, 6 girls). The Class I sample also consisted of 17 subjects (13 boys, 4 girls). The lateral cephalograms of the subjects in both groups were analyzed at 6 consecutive stages of development, from CS1 through CS6. The statistical comparisons of the growth changes in the study groups were performed with Mann-Whitney U tests. RESULTS: Craniofacial growth in subjects with untreated Class II malocclusion is essentially similar to that in untreated subjects with normal occlusion at all developmental intervals, with the exception of significantly smaller increases in mandibular length (P <0.001) at the growth spurt (interval CS3-CS4) and during the overall observation period (intervals CS1-CS6). CONCLUSIONS: Class II dentoskeletal disharmony does not tend to self-correct with growth in association with worsening of the deficiency in total mandibular length and mandibular ramus height. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/18617112/Longitudinal_growth_changes_in_untreated_subjects_with_Class_II_Division_1_malocclusion_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(08)00115-7 DB - PRIME DP - Unbound Medicine ER -