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A cephalometric study of class II Division 1 malocclusions treated with the Jasper Jumper appliance.
Angle Orthod. 1999 Aug; 69(4):311-20.AO

Abstract

This lateral cephalometric study investigated the dental and skeletal effects of the Jasper Jumper appliance used in the correction of Class II Division 1 malocclusions. A sample of 36 growing patients treated with the Jasper Jumper appliance was divided into two groups: (1) 24 patients with records obtained at the start and completion of orthodontic treatment, and (2) 12 patients with records available at the beginning and end of the Jumper phase of treatment. Treatment effects were determined by statistical comparisons of cephalometric changes in the patients relative to age-adjusted cephalometric standards, and from structural superimpositions. While the Jumpers were in place, maxillary incisors were retroclined and the molars were moved distally, tipped back, and intruded. The mandibular incisors were proclined and intruded, while the molars were translated mesially, tipped forward, and extruded. Skeletal measures showed reduced forward maxillary displacement and no significant alteration of horizontal mandibular growth. During orthodontic finishing, molar tipping and maxillary incisor retroclination were corrected, although the mandibular incisors remained proclined. In summary, this study found that the Jasper Jumper appliance corrected Class II discrepancies largely through maxillary and mandibular dentoalveolar effects and, to a limited extent, by restraint of forward maxillary growth.

Authors+Show Affiliations

Department of Orthodontics, New Jersey Dental School, Newark 07103-2400, USA. covellda@umdnj.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

10456598

Citation

Covell, D A., et al. "A Cephalometric Study of Class II Division 1 Malocclusions Treated With the Jasper Jumper Appliance." The Angle Orthodontist, vol. 69, no. 4, 1999, pp. 311-20.
Covell DA, Trammell DW, Boero RP, et al. A cephalometric study of class II Division 1 malocclusions treated with the Jasper Jumper appliance. Angle Orthod. 1999;69(4):311-20.
Covell, D. A., Trammell, D. W., Boero, R. P., & West, R. (1999). A cephalometric study of class II Division 1 malocclusions treated with the Jasper Jumper appliance. The Angle Orthodontist, 69(4), 311-20.
Covell DA, et al. A Cephalometric Study of Class II Division 1 Malocclusions Treated With the Jasper Jumper Appliance. Angle Orthod. 1999;69(4):311-20. PubMed PMID: 10456598.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A cephalometric study of class II Division 1 malocclusions treated with the Jasper Jumper appliance. AU - Covell,D A,Jr AU - Trammell,D W, AU - Boero,R P, AU - West,R, PY - 1999/8/24/pubmed PY - 2001/3/28/medline PY - 1999/8/24/entrez SP - 311 EP - 20 JF - The Angle orthodontist JO - Angle Orthod VL - 69 IS - 4 N2 - This lateral cephalometric study investigated the dental and skeletal effects of the Jasper Jumper appliance used in the correction of Class II Division 1 malocclusions. A sample of 36 growing patients treated with the Jasper Jumper appliance was divided into two groups: (1) 24 patients with records obtained at the start and completion of orthodontic treatment, and (2) 12 patients with records available at the beginning and end of the Jumper phase of treatment. Treatment effects were determined by statistical comparisons of cephalometric changes in the patients relative to age-adjusted cephalometric standards, and from structural superimpositions. While the Jumpers were in place, maxillary incisors were retroclined and the molars were moved distally, tipped back, and intruded. The mandibular incisors were proclined and intruded, while the molars were translated mesially, tipped forward, and extruded. Skeletal measures showed reduced forward maxillary displacement and no significant alteration of horizontal mandibular growth. During orthodontic finishing, molar tipping and maxillary incisor retroclination were corrected, although the mandibular incisors remained proclined. In summary, this study found that the Jasper Jumper appliance corrected Class II discrepancies largely through maxillary and mandibular dentoalveolar effects and, to a limited extent, by restraint of forward maxillary growth. SN - 0003-3219 UR - https://www.unboundmedicine.com/medline/citation/10456598/A_cephalometric_study_of_class_II_Division_1_malocclusions_treated_with_the_Jasper_Jumper_appliance_ L2 - https://meridian.allenpress.com/angle-orthodontist/article-lookup/doi/10.1043/0003-3219(1999)069<0311:ACSOCI>2.3.CO;2 DB - PRIME DP - Unbound Medicine ER -