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Growth and treatment changes in patients treated with a headgear-activator appliance.
Am J Orthod Dentofacial Orthop. 2002 Apr; 121(4):376-84.AJ

Abstract

The aim of this study was to investigate growth and treatment changes in patients with Class II Division 1 malocclusion treated with a combined headgear-activator appliance. The sample consisted of 20 consecutive male patients treated with headgear-activator. Their compliance was checked after 2 months of treatment, and 3 patients dropped out. Lateral cephalograms, obtained 6 months before treatment, at the start of treatment, after 6 and 12 months of treatment, and 24 months after treatment, were analyzed by the method of Pancherz. The results disclosed that during growth, on average, overjet, molar relationship, and jaw-base relationship improved, and the mandibular incisors became retruded; the changes were statistically significant over a 2-year period. There was no significant change in the overbite. During the 12 months of treatment, there was no maxillary forward growth, and the jaw relationship improved (P <.001) because of forward growth of the mandible (P <.001). The molar relationship and the overbite improved (P <.001). Significant treatment effects included reduction in overjet (P <.001) and overbite (P <.01), and improvement of jaw-base (P <.05) and molar (P <.001) relationships. There was significant restraint of maxillary forward growth (P <.05). The eruption of the maxillary incisors and molars was restrained (P <.05). The average basic growth pattern in Class II Division 1 malocclusion resulted in small favorable changes in overjet, molar relationship, and jaw-base relationship. The main effect of the headgear-activator appliance was a favorable dental change, limited to restraint of maxillary forward growth but not affecting the vertical dimension.

Authors+Show Affiliations

Department of Orthodontics, Faculty of Dentistry, The University of Hong Kong, SAR China. sambende@hkusau.hku.hkNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11997762

Citation

Bendeus, Margareta, et al. "Growth and Treatment Changes in Patients Treated With a Headgear-activator Appliance." 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. 121, no. 4, 2002, pp. 376-84.
Bendeus M, Hägg U, Rabie B. Growth and treatment changes in patients treated with a headgear-activator appliance. Am J Orthod Dentofacial Orthop. 2002;121(4):376-84.
Bendeus, M., Hägg, U., & Rabie, B. (2002). Growth and treatment changes in patients treated with a headgear-activator appliance. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 121(4), 376-84.
Bendeus M, Hägg U, Rabie B. Growth and Treatment Changes in Patients Treated With a Headgear-activator Appliance. Am J Orthod Dentofacial Orthop. 2002;121(4):376-84. PubMed PMID: 11997762.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Growth and treatment changes in patients treated with a headgear-activator appliance. AU - Bendeus,Margareta, AU - Hägg,Urban, AU - Rabie,Bakr, PY - 2002/5/9/pubmed PY - 2002/8/3/medline PY - 2002/5/9/entrez SP - 376 EP - 84 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 - 121 IS - 4 N2 - The aim of this study was to investigate growth and treatment changes in patients with Class II Division 1 malocclusion treated with a combined headgear-activator appliance. The sample consisted of 20 consecutive male patients treated with headgear-activator. Their compliance was checked after 2 months of treatment, and 3 patients dropped out. Lateral cephalograms, obtained 6 months before treatment, at the start of treatment, after 6 and 12 months of treatment, and 24 months after treatment, were analyzed by the method of Pancherz. The results disclosed that during growth, on average, overjet, molar relationship, and jaw-base relationship improved, and the mandibular incisors became retruded; the changes were statistically significant over a 2-year period. There was no significant change in the overbite. During the 12 months of treatment, there was no maxillary forward growth, and the jaw relationship improved (P <.001) because of forward growth of the mandible (P <.001). The molar relationship and the overbite improved (P <.001). Significant treatment effects included reduction in overjet (P <.001) and overbite (P <.01), and improvement of jaw-base (P <.05) and molar (P <.001) relationships. There was significant restraint of maxillary forward growth (P <.05). The eruption of the maxillary incisors and molars was restrained (P <.05). The average basic growth pattern in Class II Division 1 malocclusion resulted in small favorable changes in overjet, molar relationship, and jaw-base relationship. The main effect of the headgear-activator appliance was a favorable dental change, limited to restraint of maxillary forward growth but not affecting the vertical dimension. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/11997762/Growth_and_treatment_changes_in_patients_treated_with_a_headgear_activator_appliance_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889540602518011 DB - PRIME DP - Unbound Medicine ER -