title: Clinical evaluation of neodymium-iron-boron (Ne2Fe14B) rare earth magnets in the treatment of mid line diastemas.
abstract: BACKGROUND
  To evaluate the closure of midline diastema using the Neodymium-Iron-Boron magnets and to compare the treatment duration of midline diastemas with the use of magnets compared to regular orthodontic treatment.
  
  
  METHODS
  Thirty patients with age group 12 to 30 years with the midline diastema ranging from 0.5 to 3mm were selected. These patients were divided into two groups. Diastema closure in one group was accomplished by conventional method, in other group was done with Ne2Fe14B magnets. These magnets were fitted to the labial surfaces of the maxillary central incisors such a way that the opposite poles of the magnets face each other. At each appointment, study models and radiographs were taken for study subjects and the midline diastema was measured using digital vernier calipers on the study models obtained. Descriptive statistics carried out using Paired t-test.
  
  
  RESULTS
  Subjects treated with Ne2Fe14B magnets showed a significant difference compared to fixed orthodontic appliance subjects with respect to time of closure, rate of space closure and incisal inclination. Significant difference between 2 groups with reduction of 64.6 days in time to diastema closure in subjects treated with Ne2Fe14B magnets (P<0.05).
  
  
  CONCLUSIONS
  Ne2Fe14B magnets more efficient in complete closure of mid line diastema in less duration of time.
  
  
  BACKGROUND
  Midline diastema, Ne2Fe14B magnets, rare earth magnets, space closure.
authors.affiliation: Professor and Head, Orthodontics, Narayana Dental College and Hospital, Nellore, AP, India.
authors.forename: Mandava
authors.initials: M
authors.lastname: Prasad
authors.affiliation: Postgraduate student, Orthodontics, Narayana Dental College and Hospital, Nellore, AP, India.
authors.forename: Mitta
authors.initials: M
authors.lastname: Manoj-Kumar
authors.affiliation: Professor, Orthodontics, Narayana Dental College and Hospital, Nellore, AP, India.
authors.forename: Singaraju
authors.initials: S
authors.lastname: Gowri-Sankar
authors.affiliation: Senior lecturer, Orthodontics, Narayana Dental College and Hospital, Nellore, AP, India.
authors.forename: Nellore
authors.initials: N
authors.lastname: Chaitanya
authors.affiliation: Senior lecturer, Orthodontics, Narayana Dental College and Hospital, Nellore, AP, India.
authors.forename: Ganugapanta
authors.initials: G
authors.lastname: Vivek-Reddy
authors.affiliation: Postgraduate student, Orthodontics, Narayana Dental College and Hospital, Nellore, AP, India.
authors.forename: Nettam
authors.initials: N
authors.lastname: Venkatesh