title: Effect of ion implantation of TMA archwires on the rate of orthodontic sliding space closure.
abstract: A split-mouth randomized clinical trial was used to determine whether ion implantation of beta-titanium archwire would facilitate sliding space closure. After bilateral maxillary first premolar extractions, 0.19 x 0.025-inch beta-titanium arch wires, ion-implanted on one half only, were placed in 30 subjects aged 10 to 42 years wearing unimplanted 0.022 inch slot appliances. Nickel-titanium springs (150 g) were placed bilaterally to close the extraction spaces. Space closure was measured intraorally at monthly intervals until either the space on one side closed or 6 months had elapsed. The median rates of space closure were not significantly different between the ion-implanted and the unimplanted sides. The average rate of space closure on these beta-titanium wires, with or without ion implantation, was similar to the rate reported on stainless steel arch wires.
authors.affiliation: Department of Orthodontics, University of North Carolina Dental School, Chapel Hill, USA.
authors.forename: K
authors.initials: K
authors.lastname: Kula
authors.forename: C
authors.initials: C
authors.lastname: Phillips
authors.forename: A
authors.initials: A
authors.lastname: Gibilaro
authors.forename: W R
authors.initials: WR
authors.lastname: Proffit
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003722:Dental Alloys / Q000737:chemistry*; D004498:Education, Dental, Continuing; D005260:Female; D006801:Humans; D008297:Male; D016382:Orthodontic Appliance Design; D019516:Orthodontic Space Closure / Q000379:methods* / Q000706:statistics & numerical data; D009969:Orthodontic Wires; D009970:Orthodontics / Q000193:education; D011446:Prospective Studies; D013997:Time Factors; D014025:Titanium / Q000737:chemistry*
chemical_list: D003722:Dental Alloys; C023988:beta titanium; D014025:Titanium