Tags

Type your tag names separated by a space and hit enter

Evaluation of posttreatment changes in Class II Division 1 patients after nonextraction orthodontic treatment: cephalometric and model analysis.

Abstract

BACKGROUND

The aim of this retrospective study was to evaluate changes in patients with Class II Division 1 malocclusions treated with cervical headgear and full fixed orthodontic appliances and without extractions.

METHODS

Lateral cephalograms and dental casts of 18 patients were obtained at the beginning and the end of treatment and at the postretention period. Pretreatment records were taken at 11.9 +/- 2.6 years, and the mean treatment time was 2.8 +/- 1.2 years. All patients were asked to use maxillary and mandibular Hawley retainers for 1 year. The average postretention interval was 5.3 years.

RESULTS

The assessment of cephalometric findings showed that maxillary growth was restricted; maxillary incisor inclination, overjet, and overbite were decreased; the mandibular incisors were proclined; and a slight mandibular posterior rotation occurred at the end of treatment. At the postretention period, the maxilla remained stable, the mandible moved anteriorly, and the overjet increased slightly (1.25 mm, P < .01). The dental cast changes indicated that both maxillary and mandibular irregularity index values decreased significantly during treatment but increased after 5 years. Mandibular intercanine width decreased 0.47 mm ( P < .01) during the postretention period.

CONCLUSIONS

The redirection of maxillary growth remained stable in patients with Class II malocclusions treated with cervical headgear and fixed orthodontic appliances and without extractions, but treatment-induced mandibular rotations tended to return to their original patterns. Various dental changes occurred during the postretention period.

Links

  • Publisher Full Text
  • Authors+Show Affiliations

    ,

    Department of Orthodontics, Faculty of Dentistry, Hacettepe University, Sihhiye Ankara 06100, Turkey.

    ,

    Source

    MeSH

    Cephalometry
    Child
    Extraoral Traction Appliances
    Female
    Humans
    Longitudinal Studies
    Male
    Malocclusion, Angle Class II
    Orthodontic Appliances
    Orthodontic Retainers
    Orthodontics, Corrective
    Recurrence
    Retrospective Studies
    Tooth Extraction
    Treatment Outcome

    Pub Type(s)

    Evaluation Studies
    Journal Article

    Language

    eng

    PubMed ID

    15750542

    Citation

    Ciger, Semra, et al. "Evaluation of Posttreatment Changes in Class II Division 1 Patients After Nonextraction Orthodontic Treatment: Cephalometric and Model Analysis." 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. 127, no. 2, 2005, pp. 219-23.
    Ciger S, Aksu M, Germeç D. Evaluation of posttreatment changes in Class II Division 1 patients after nonextraction orthodontic treatment: cephalometric and model analysis. Am J Orthod Dentofacial Orthop. 2005;127(2):219-23.
    Ciger, S., Aksu, M., & Germeç, D. (2005). Evaluation of posttreatment changes in Class II Division 1 patients after nonextraction orthodontic treatment: cephalometric and model analysis. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 127(2), pp. 219-23.
    Ciger S, Aksu M, Germeç D. Evaluation of Posttreatment Changes in Class II Division 1 Patients After Nonextraction Orthodontic Treatment: Cephalometric and Model Analysis. Am J Orthod Dentofacial Orthop. 2005;127(2):219-23. PubMed PMID: 15750542.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Evaluation of posttreatment changes in Class II Division 1 patients after nonextraction orthodontic treatment: cephalometric and model analysis. AU - Ciger,Semra, AU - Aksu,Muge, AU - Germeç,Derya, PY - 2005/3/8/pubmed PY - 2005/3/22/medline PY - 2005/3/8/entrez SP - 219 EP - 23 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 - 127 IS - 2 N2 - BACKGROUND: The aim of this retrospective study was to evaluate changes in patients with Class II Division 1 malocclusions treated with cervical headgear and full fixed orthodontic appliances and without extractions. METHODS: Lateral cephalograms and dental casts of 18 patients were obtained at the beginning and the end of treatment and at the postretention period. Pretreatment records were taken at 11.9 +/- 2.6 years, and the mean treatment time was 2.8 +/- 1.2 years. All patients were asked to use maxillary and mandibular Hawley retainers for 1 year. The average postretention interval was 5.3 years. RESULTS: The assessment of cephalometric findings showed that maxillary growth was restricted; maxillary incisor inclination, overjet, and overbite were decreased; the mandibular incisors were proclined; and a slight mandibular posterior rotation occurred at the end of treatment. At the postretention period, the maxilla remained stable, the mandible moved anteriorly, and the overjet increased slightly (1.25 mm, P < .01). The dental cast changes indicated that both maxillary and mandibular irregularity index values decreased significantly during treatment but increased after 5 years. Mandibular intercanine width decreased 0.47 mm ( P < .01) during the postretention period. CONCLUSIONS: The redirection of maxillary growth remained stable in patients with Class II malocclusions treated with cervical headgear and fixed orthodontic appliances and without extractions, but treatment-induced mandibular rotations tended to return to their original patterns. Various dental changes occurred during the postretention period. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/15750542/Evaluation_of_posttreatment_changes_in_Class_II_Division_1_patients_after_nonextraction_orthodontic_treatment:_cephalometric_and_model_analysis_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889540604008753 DB - PRIME DP - Unbound Medicine ER -