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Class II Division 1 malocclusion with severe overbite: cephalometric evaluation of the effects of orthodontic treatment.
World J Orthod. 2008 Winter; 9(4):319-28.WJ

Abstract

AIM

To evaluate the effects of orthodontic treatment among individuals with Class II Division 1 malocclusion and severe overbite.

METHODS

The sample was made up of 70 patients (35 males and 35 females), with an average age of 11.6 years in pretreatment and 14.9 years in posttreatment. One hundred forty lateral cephalograms were obtained and traced by a single investigator. All individuals were treated with the edgewise technique associated with the Kloehn cervical extraoral headgear during the growth spurt, and simultaneously presented ANB > or = 5 degrees and overbite > or = 4 mm. Statistical analysis involved t tests for both independent and paired samples and the Spearman correlation test.

RESULTS

There were no significant differences between genders regarding the effects of treatment. The cases treated with extraction presented a greater reduction in the SNA angle. On average, all the variables of the study were significantly different when comparing the pretreatment and posttreatment conditions, except for the measurement of the mandibular plane angle (SNGoMe).

CONCLUSION

Correction of severe overbite occurred in virtue of the intrusion of the maxillary and mandibular incisors associated to a reduction of the maxillary prognathism and differential growth of the mandible, as well as dentoalveolar growth.

Authors+Show Affiliations

University of Vale do Rio Verde, Três Corações, Brazil. lsmarques21@yahoo.com.brNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

19146013

Citation

Marques, Leandro Silva, et al. "Class II Division 1 Malocclusion With Severe Overbite: Cephalometric Evaluation of the Effects of Orthodontic Treatment." World Journal of Orthodontics, vol. 9, no. 4, 2008, pp. 319-28.
Marques LS, Ramos-Jorge ML, Araujo MT, et al. Class II Division 1 malocclusion with severe overbite: cephalometric evaluation of the effects of orthodontic treatment. World J Orthod. 2008;9(4):319-28.
Marques, L. S., Ramos-Jorge, M. L., Araujo, M. T., & Bolognese, A. M. (2008). Class II Division 1 malocclusion with severe overbite: cephalometric evaluation of the effects of orthodontic treatment. World Journal of Orthodontics, 9(4), 319-28.
Marques LS, et al. Class II Division 1 Malocclusion With Severe Overbite: Cephalometric Evaluation of the Effects of Orthodontic Treatment. World J Orthod. 2008;9(4):319-28. PubMed PMID: 19146013.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Class II Division 1 malocclusion with severe overbite: cephalometric evaluation of the effects of orthodontic treatment. AU - Marques,Leandro Silva, AU - Ramos-Jorge,Maria Leticia, AU - Araujo,Mônica Tirre de Souza, AU - Bolognese,Ana Maria, PY - 2009/1/17/entrez PY - 2009/1/17/pubmed PY - 2009/3/21/medline SP - 319 EP - 28 JF - World journal of orthodontics JO - World J Orthod VL - 9 IS - 4 N2 - AIM: To evaluate the effects of orthodontic treatment among individuals with Class II Division 1 malocclusion and severe overbite. METHODS: The sample was made up of 70 patients (35 males and 35 females), with an average age of 11.6 years in pretreatment and 14.9 years in posttreatment. One hundred forty lateral cephalograms were obtained and traced by a single investigator. All individuals were treated with the edgewise technique associated with the Kloehn cervical extraoral headgear during the growth spurt, and simultaneously presented ANB > or = 5 degrees and overbite > or = 4 mm. Statistical analysis involved t tests for both independent and paired samples and the Spearman correlation test. RESULTS: There were no significant differences between genders regarding the effects of treatment. The cases treated with extraction presented a greater reduction in the SNA angle. On average, all the variables of the study were significantly different when comparing the pretreatment and posttreatment conditions, except for the measurement of the mandibular plane angle (SNGoMe). CONCLUSION: Correction of severe overbite occurred in virtue of the intrusion of the maxillary and mandibular incisors associated to a reduction of the maxillary prognathism and differential growth of the mandible, as well as dentoalveolar growth. SN - 1530-5678 UR - https://www.unboundmedicine.com/medline/citation/19146013/Class_II_Division_1_malocclusion_with_severe_overbite:_cephalometric_evaluation_of_the_effects_of_orthodontic_treatment_ L2 - https://antibodies.cancer.gov/detail/CPTC-SNAI1-1 DB - PRIME DP - Unbound Medicine ER -