title: Modification of the bidimensional system.
abstract: In the mid 1970s, Schudy and Schudy developed and described an edgewise bimetric system in which there were brackets with 0.016-inch slots on the incisors and canines and brackets with 0.022-inch slots on the premolars and molars. Modeling after Schudy and Schudy, Gianelly devised a similar, preadjusted system called the bidimensional system, in which the incisor brackets have 0.018-inch slots while the remaining teeth have brackets with 0.022-inch slots. We have further modified the bidimensional system and developed a dual-slot system. Hence, this article compares the bidimensional and dual-slot systems and provides justification for both. The main concerns regarding the bidimensional and dual-slot systems are posterior "play" and lack of three-dimensional control. We rationalize both as well as the self-ligating hybrid and dual-slot system.
authors.affiliation: Graduate Program in Orthodontics Seton Hill University, Greensburg, PA, USA. drinchuse@aol.com
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Rinchuse
authors.forename: Donald J
authors.initials: DJ
authors.lastname: Rinchuse
mesh_terms: D001641:Bicuspid / Q000473:pathology; D003481:Cuspid / Q000473:pathology; D003722:Dental Alloys / Q000737:chemistry; D006801:Humans; D007180:Incisor / Q000473:pathology; D009532:Nickel / Q000737:chemistry; D016382:Orthodontic Appliance Design; D016910:Orthodontic Brackets; D019516:Orthodontic Space Closure / Q000295:instrumentation; D009969:Orthodontic Wires; D013193:Stainless Steel / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry; D014087:Tooth Movement Techniques / Q000295:instrumentation* / Q000379:methods; D019415:Torque
chemical_list: D003722:Dental Alloys; C040654:titanium nickelide; D013193:Stainless Steel; D009532:Nickel; D014025:Titanium