Dental arch dimensional changes after adenotonsillectomy in prepubertal children

Am J Orthod Dentofacial Orthop. 2014 Apr;145(4):461-8. doi: 10.1016/j.ajodo.2013.12.018.

Abstract

Introduction: The purposes of this study were to investigate the dental arch changes after adenotonsillectomies in prepubertal children and to compare the dental arch dimensions of mouth-breathing and nasal-breathing children.

Methods: The sample included 49 prepubertal severely obstructed mouth-breathing children and 46 prepubertal nasal-breathing children. Twenty-four of the 49 mouth-breathing children had an adenotonsillectomy and composed the adenotonsillectomy subgroup. The 25 children in whom the mouth-breathing pattern was unchanged during the 1-year study period composed the control subgroup.

Results: The mouth-breathing children showed a deeper palatal vault, a larger mandibular width, and a larger mandibular arch length in comparison with the nasal-breathing children. After airway clearance, the adenotonsillectomy group showed a significant maxillary transverse width gain compared with the control subgroup. The control subgroup showed a significant deepening of the palatal height when compared with the adenotonsillectomy subgroup after 1 year.

Conclusions: The adenotonsillectomy subgroup had a significantly different pattern of arch development compared with the untreated controls. After adenotonsillectomy, the mouth-breathing children showed greater maxillary transverse development than did the controls. The palatal vault deepened in the untreated children. The mouth-breathing children showed a deeper palatal vault, a larger mandibular width, and a larger mandibular arch length in comparison with the nasal-breathing children.

Publication types

  • Comparative Study

MeSH terms

  • Adenoidectomy*
  • Airway Obstruction / pathology
  • Case-Control Studies
  • Cephalometry / methods
  • Child
  • Child, Preschool
  • Cohort Studies
  • Cuspid / pathology
  • Dental Arch / pathology*
  • Female
  • Follow-Up Studies
  • Humans
  • Hypertrophy
  • Male
  • Malocclusion, Angle Class II / pathology
  • Mandible / pathology
  • Maxilla / growth & development
  • Maxilla / pathology
  • Molar / pathology
  • Mouth Breathing / pathology
  • Nasopharyngeal Diseases / pathology
  • Nose / physiology
  • Open Bite / pathology
  • Palate / pathology
  • Palatine Tonsil / pathology
  • Puberty
  • Respiration
  • Tonsillectomy*