title: Tooth size discrepancy in a Libyan population, a cross-sectional study in schoolchildren.
abstract: Objetives: The aim of this cross-sectional study was to investigate the tooth size discrepancy (TSD) in a group of Libyan schoolchildren, and to compare TSD between sexes.
  
  
  METHODS
  The sample comprised 333 Libyan schoolchildren (162 males with a mean (SD) age of 14.4 (1.1) years, and 171 females with a mean age of 14.1 (1.1) years). Anterior and overall TSD ratios were computed using descriptive statistics. Sex differences were statistically assessed using an independent t-test (P<0.05).
  
  
  RESULTS
  Males showed significantly wider MD tooth width compared to females (P<0.05), except for the maxillary first premolars and mandibular central incisors. There were significant differences (P<0.05) between the paired (right and left sides) tooth measurements except for the maxillary and mandibular central and lateral incisors as well as mandibular canines. The mean (SD) for overall and anterior TSD ratios were 91.3% (2.1) and 78.2% (2.6), respectively, with no significant sex differences for both variables (P> 0.05). The percentages of participants showing more than 2 SD variation for the anterior and overall ratios comprised 3% and 4.2% of the total sample, respectively.
  
  
  CONCLUSIONS
  The anterior and overall TSD ratios for the examined subjects were established and showed no significant sexual dimorphism. Key words:Tooth size discrepancy, Libyan, schoolchildren.
authors: BDS, MDS, PhD. Department of Orthodontics, Dental Faculty, Benghazi University, Benghazi, Libya.
authors: Iman
authors: I
authors: Bugaighis
authors: BDS, MDS, M Orth RCS. The Multispecialty Dental Clinic, Porvorim, Bardez, Goa, India.
authors: Divakar
authors: D
authors: Karanth
authors: MScD, M Orth RCS, Fellowship Craniofac Orth (CHLA/USC). Orthodontics, Warwick Dentistry, Warwick Medical School, University of Warwick, Coventry; Maxillofacial Unit and Orthodontics, Northampton General Hospital, Northampton, UK.
authors: Ali
authors: A
authors: Borzabadi-Farahani