title: Effect of the length of orthodontic mini-screw implants on their long-term stability: a prospective study.
abstract: OBJECTIVE
  To analyze the influence of the length of temporary intraoral skeletal anchorage devices (TISAD/TAD) on their long-term stability in the mandible in a homogenous group of patients.
  
  
  METHODS
  A group of generally healthy patients of the same gender (female) and with a statistically insignificant age difference (20-29 years) highly homogenous with respect to known factors affecting the success rate of TISAD/TAD was evaluated. One type of TISAD/TAD was applied (6- or 8-mm long). Each patient received both 6- and 8-mm-long TISAD/TAD in randomly selected mandibular quadrants: left or right. The long-term success rate of TISAD/TAD was analyzed.
  
  
  RESULTS
  The 8-mm orthodontic mini-screw implants were significantly more stable than the 6-mm ones in the analyzed group.
  
  
  CONCLUSIONS
  The length of the TISAD/TAD may be one of the factors that can affect the long-term success rate in the mandibles of 20- to 29-year-old women.
authors.affiliation: a  Lecturer, Department of Dentofacial Orthopedics and Orthodontics, Wroclaw Medical University, Wroclaw, Poland.
authors.forename: Michał
authors.initials: M
authors.lastname: Sarul
authors.forename: Liwia
authors.initials: L
authors.lastname: Minch
authors.forename: Hyo-Sang
authors.initials: HS
authors.lastname: Park
authors.forename: Joanna
authors.initials: J
authors.lastname: Antoszewska-Smith
mesh_terms: D000328:Adult; D015519:Bone Density / Q000502:physiology; D001863:Bone Screws; D015921:Dental Implants; D004868:Equipment Failure; D005260:Female; D006801:Humans; D008334:Mandible / Q000601:surgery; D008904:Miniaturization; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D016382:Orthodontic Appliance Design; D011446:Prospective Studies; D013499:Surface Properties; D016019:Survival Analysis; D014087:Tooth Movement Techniques / Q000295:instrumentation; D055815:Young Adult
chemical_list: D015921:Dental Implants
keywords: Anchorage; Long-term stability; Mini-screw implants; TISAD/TAD
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