title: Evaluation and Comparison of Intermaxillary Tooth Size Discrepancy among Class I, Class II Division 1, and Class III Subjects Using Bolton's Analysis: An in vitro Study.
abstract: OBJECTIVE
  The aim of the present study was to evaluation and comparison of intermaxillary tooth size discrepancy among Class I, Class II division 1, and Class III subjects using Bolton's analysis.
  
  
  METHODS
  The pre-treatment casts were selected from the records of patients attending the Department of Orthodontics of Meenakshi Ammal Dental College, Chennai. The sample consists of 180 pre-treatment casts with both sexes evenly distributed with 60 casts in each type of malocclusion, i.e., Class I, Class II div 1, and Class III malocclusion. The sample was selected according to angles classification. All patients were Indian nationals, between the age group of 12 to 20 years and Bolton's analysis done on all the casts.
  
  
  RESULTS
  Statistically no significant difference in all types of malocclusion except anterior Bolton's discrepancy in Class III.
  
  
  CONCLUSIONS
  Mean Bolton's anterior ratio for angles Class III subjects was significantly greater than for Class I and Class II subjects. When Bolton's overall ratio was compared there was no statistically significant difference among Class I, Class II div 1, and Class III malocclusions.
authors.affiliation: Reader, Department of Orthodontics and Dentofacial Orthopaedics, Panineeya institute of Dental sciences and Hospital, Dilsukhnagar, Hyderabad, Telangana, India.
authors.forename: A Lakshmi
authors.initials: AL
authors.lastname: Prasanna
authors.affiliation: Professor, Department of Orthodontics and Dentofacial Orthopaedics, Panineeya institute of Dental sciences and Hospital, Dilsukhnagar, Hyderabad, Telangana, India.
authors.forename: V
authors.initials: V
authors.lastname: Venkatramana
authors.affiliation: Senior Lecturer, Department of Orthodontics and Dentofacial Orthopaedics, Panineeya institute of Dental sciences and Hospital, Dilsukhnagar, Hyderabad, Telangana, India.
authors.forename: A Srikanth
authors.initials: AS
authors.lastname: Aryasri
authors.affiliation: Senior Lecturer, Department of Orthodontics and Dentofacial Orthopaedics, Sibar Institute of Dental sciences, Guntur, Andhra Pradesh, India.
authors.forename: Anil Kumar
authors.initials: AK
authors.lastname: Katta
authors.affiliation: Senior Lecturer, Department of Orthodontics and Dentofacial Orthopaedics, Rajah Muthiah Dental College and Hospital, Annamalai University, Chidambaram, Tamil Nadu, India.
authors.forename: K
authors.initials: K
authors.lastname: Santhanakrishnan
authors.affiliation: Professor, Department of Orthodontics and Dentofacial Orthopaedics, Meenakshi Ammal Dental College, Chennai, Tamil Nadu, India.
authors.forename: Uma
authors.initials: U
authors.lastname: Maheshwari
keywords: Angle’s classification of malocclusions (Class I, Class II, and Class III); Bolton’s analysis; pre-treatment casts