title: Clinical Evaluation of Proclination of Lower Anterior Teeth during Alignment using a Single Width Bracket-A Pilot Study.
abstract: BACKGROUND
  The pre-adjusted brackets are available in various prescriptions and sizes; nevertheless there are still many controversies as to which pre-adjusted edgewise bracket offers the maximum clinical efficiency.
  
  
  OBJECTIVE
  This study was conducted to determine and compare the amount of lower incisor proclination during de-crowding if any of the Mini-Uni Twin Brackets with that of the standard double width brackets.
  
  
  METHODS
  A total of 20 patients i.e., 10 patients in each group both males and females were randomly selected for the study from subjects seeking treatment, the selected samples were grouped as follows. Group I - Double Width Brackets (3M Unitek Gemini Series) 0.018" slot with Roth prescription. Group II - Mini Uni-Twin Bracket (3M Unitek) 0.018" slot with Roth prescription.
  
  
  RESULTS
  The Mini-Uni Twin Brackets had statistically significant (p = 0.01) amount of proclination of the lower anteriors (0.8(o)± 0.3(o)) after de-crowding as compared to the standard Double Width Brackets and since the mean change in the Incisor Mandibular Plane Angle (IMPA) was lesser than 1(o), its clinical significance could be questionable.
  
  
  CONCLUSIONS
  The Mini Uni Twin brackets are comparatively efficient in the lower anterior decrowding but further comparative clinical studies need to be performed on these Mini Uni Twin brackets, with an increase in the sample size and also the number of parameters to prove its total clinical efficiency.
authors: Professor, Department of Orthodontics, KGF College of Dental Sciences , Kolar, Karnataka, India .
authors: Naveen Kumar
authors: NK
authors: Krishna
authors: Ex. Professor, Department of Orthodontics, Private Practice, India .
authors: Azeem
authors: A
authors: Farhan
authors: Reader, Department of Conservative Dentistry & Endodontics, Patna Dental College , Patna, Bihar, India .
authors: Rashmi
authors: R
authors: Issar
authors: Professor and Head, Department of Orthodontics, KGF College of Dental Sciences , Kolar, Karnataka, India .
authors: Shashikala
authors: S
authors: Subramanian
authors: Senior Lecturer, Department of Orthodontics, Vydehi Institute of Dental Sciences , Bangalore, Karnataka, India .
authors: Manju Prasad
authors: MP
authors: Muniyappa
authors: Reader, Department of Oral & Maxillofacial Pathology, Private Practice, Buddha Dental College , Patna, Bihar, India .
authors: Shashi
authors: S
authors: Ranjan
authors: Senior Resident, Department of Oral & Maxillofacial Surgery, Indira Gandhi Institute Of Medical Sciences , Patna, Bihar, India .
authors: Priyankar
authors: P
authors: Singh
authors: Reader, Department of Oral & Maxillofacial Surgery, B.R. Ambedkar Institute of Dental Sciences & Hospital , Patna, Bihar, India .
authors: Kumar Tathagat
authors: KT
authors: Singh
keywords: Incisor crowding; Incisor proclination; Interbracket span; Mini-Uni Twin brackets