Introduction: The purpose of this study was to describe the craniofacial growth changes of subjects with Class II malocclusion associated with maxillary skeletal protrusion at the circumpubertal growth period. Methods: The records of 25 untreated subjects with normal Class I occlusion and 25 untreated Class II subjects (14 boys and 11 girls in each group) were selected from the longitudinal records of the University of Michigan Growth Study. All Class II subjects had maxillary protrusion. Measurements were made on lateral and posteroanterior cephalograms and on dental casts at 2 times. The first observation (T1) was during the prepubertal growth phase (vertebral stages CS1 to CS3). The second observation (T2) was during the postpubertal phase of growth (vertebral stages CS4 to CS6). The following comparisons were made: Class I vs Class II at T1, Class I vs Class II at T2, and growth changes in Class I vs Class II. Results: No dentofacial feature studied showed any statistically significant difference when comparing the growth changes between the Class II and the Class I groups. Conclusions: These results suggest that dentofacial features of Class II malocclusion associated with maxillary skeletal protrusion are maintained during the circumpubertal period, and that growth changes in this type of Class II disharmony are similar to those in subjects with normal occlusion.

Dentofacial features of Class II malocclusion associated with maxillary skeletal protrusion: A longitudinal study at the circumpubertal growth period / M. J. Vasquez;T. Baccetti;L. Franchi;J. A. McNamara. - In: AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS. - ISSN 0889-5406. - ELETTRONICO. - 135:(2009), pp. 0-0. [10.1016/j.ajodo.2007.05.026]

Dentofacial features of Class II malocclusion associated with maxillary skeletal protrusion: A longitudinal study at the circumpubertal growth period

BACCETTI, TIZIANO;FRANCHI, LORENZO;
2009

Abstract

Introduction: The purpose of this study was to describe the craniofacial growth changes of subjects with Class II malocclusion associated with maxillary skeletal protrusion at the circumpubertal growth period. Methods: The records of 25 untreated subjects with normal Class I occlusion and 25 untreated Class II subjects (14 boys and 11 girls in each group) were selected from the longitudinal records of the University of Michigan Growth Study. All Class II subjects had maxillary protrusion. Measurements were made on lateral and posteroanterior cephalograms and on dental casts at 2 times. The first observation (T1) was during the prepubertal growth phase (vertebral stages CS1 to CS3). The second observation (T2) was during the postpubertal phase of growth (vertebral stages CS4 to CS6). The following comparisons were made: Class I vs Class II at T1, Class I vs Class II at T2, and growth changes in Class I vs Class II. Results: No dentofacial feature studied showed any statistically significant difference when comparing the growth changes between the Class II and the Class I groups. Conclusions: These results suggest that dentofacial features of Class II malocclusion associated with maxillary skeletal protrusion are maintained during the circumpubertal period, and that growth changes in this type of Class II disharmony are similar to those in subjects with normal occlusion.
2009
135
0
0
M. J. Vasquez;T. Baccetti;L. Franchi;J. A. McNamara
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0889540609000523-main.pdf

Accesso chiuso

Tipologia: Pdf editoriale (Version of record)
Licenza: Tutti i diritti riservati
Dimensione 118.86 kB
Formato Adobe PDF
118.86 kB Adobe PDF   Richiedi una copia

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/361096
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 3
social impact