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Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II Division 1 malocclusion.
Am J Orthod Dentofacial Orthop. 2000 Dec; 118(6):641-8.AJ

Abstract

This prospective cephalometric study was undertaken to assess the mode and magnitude of Class II correction with nonextraction Begg mechanotherapy in growing children. The sample comprised subjects with similar malocclusion and age range (9-12 years) who were specifically selected for nonextraction Begg mechanotherapy. Cephalograms were analyzed to assess the skeletal, dental, and soft tissue changes that occurred after correction of the molar relationship, the overjet, and the overbite during the 9-month treatment period. The results revealed a significant improvement in the anteroposterior jaw relationship, suggested by the significant reduction in the ANB angle (1.62 degrees) and in Wits AO-BO (1.42 mm). The mandibular length increase of 0.56 mm suggests that the Class II elastics used in nonextraction Begg mechanotherapy had a minimal stimulatory effect on mandibular growth. There was a significant increase in the anterior and posterior facial heights and the ramal height. Almost all of the dental changes were significant. The most striking feature were a significant retraction and extrusion of the maxillary incisors and proclination and intrusion of the lower incisors accompanied by extrusion of the mandibular molars. The maxillary incisors extruded by 1.64 mm under the influence of the undesirable downward component of the Class II elastic forces. The major contribution to overjet and molar correction was predominantly dentoalveolar.

Authors+Show Affiliations

Division of Orthodontics, Department of Dental Surgery, All India Institute of Medical Sciences, New Delhi, India.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11113799

Citation

Reddy, P, et al. "Skeletal and Dental Changes With Nonextraction Begg Mechanotherapy in Patients With Class II Division 1 Malocclusion." 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. 118, no. 6, 2000, pp. 641-8.
Reddy P, Kharbanda OP, Duggal R, et al. Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II Division 1 malocclusion. Am J Orthod Dentofacial Orthop. 2000;118(6):641-8.
Reddy, P., Kharbanda, O. P., Duggal, R., & Parkash, H. (2000). Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II Division 1 malocclusion. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 118(6), 641-8.
Reddy P, et al. Skeletal and Dental Changes With Nonextraction Begg Mechanotherapy in Patients With Class II Division 1 Malocclusion. Am J Orthod Dentofacial Orthop. 2000;118(6):641-8. PubMed PMID: 11113799.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II Division 1 malocclusion. AU - Reddy,P, AU - Kharbanda,O P, AU - Duggal,R, AU - Parkash,H, PY - 2000/12/13/pubmed PY - 2001/6/22/medline PY - 2000/12/13/entrez SP - 641 EP - 8 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 - 118 IS - 6 N2 - This prospective cephalometric study was undertaken to assess the mode and magnitude of Class II correction with nonextraction Begg mechanotherapy in growing children. The sample comprised subjects with similar malocclusion and age range (9-12 years) who were specifically selected for nonextraction Begg mechanotherapy. Cephalograms were analyzed to assess the skeletal, dental, and soft tissue changes that occurred after correction of the molar relationship, the overjet, and the overbite during the 9-month treatment period. The results revealed a significant improvement in the anteroposterior jaw relationship, suggested by the significant reduction in the ANB angle (1.62 degrees) and in Wits AO-BO (1.42 mm). The mandibular length increase of 0.56 mm suggests that the Class II elastics used in nonextraction Begg mechanotherapy had a minimal stimulatory effect on mandibular growth. There was a significant increase in the anterior and posterior facial heights and the ramal height. Almost all of the dental changes were significant. The most striking feature were a significant retraction and extrusion of the maxillary incisors and proclination and intrusion of the lower incisors accompanied by extrusion of the mandibular molars. The maxillary incisors extruded by 1.64 mm under the influence of the undesirable downward component of the Class II elastic forces. The major contribution to overjet and molar correction was predominantly dentoalveolar. SN - 0889-5406 UR - https://www.unboundmedicine.com/medline/citation/11113799/Skeletal_and_dental_changes_with_nonextraction_Begg_mechanotherapy_in_patients_with_Class_II_Division_1_malocclusion_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(00)13083-5 DB - PRIME DP - Unbound Medicine ER -