title: Analysis of Dental Maturation in Relation to Sagittal Jaw Relationships.
abstract: BACKGROUND
  The degree of mineralization of permanent tooth germs in dental age assessment has been an area of interest among many authors for years. However, only recently have researchers attempted to determine the potential interdependencies between dental age and jaw relationships. The aim of this work was to compare dental maturation in patients with skeletal Class II to patients with skeletal Classes I and III.
  
  
  METHODS
  The study involved 150 patients who sought orthodontic treatment. Dental age was assessed from panoramic radiographs using the Demirjian's method. Skeletal class was evaluated according to the value of the ANPg angle from the Björk's analysis. We used the analysis of variance (ANOVA) and the Student's t-test.
  
  
  RESULTS
  The mean dental age in patients with skeletal Class III was significantly higher than the mean dental age in patients with skeletal Class II (p<0.0005). A correlation between the dental age and chronological age was established. The weakest correlation was seen between the dental age and skeletal Class II. Among patients with skeletal Class II, the strongest correlation was found between chronological age and the formation of the germ of the second lower premolar (r=0.67; p<0.001).
  
  
  CONCLUSIONS
  Dental age among patients with skeletal Class II was the lowest.
authors.affiliation: Specialist Orthodontic Practice in Mierzyn, Mierzyn, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Durka-Zając
authors.affiliation: Resident of Orthodontics, Individual Dental Practice in Grudziądz, Grudziądz, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Derwich
authors.affiliation: Department of Dental Prophylaxis and Experimental Dentistry, Collegium Medicum of Jagiellonian University (CMUJ), Cracow, Poland.
authors.forename: Maria
authors.initials: M
authors.lastname: Mituś-Kenig
authors.affiliation: Specialist Unit of Orthodontics, District Outpatient Clinic Zbigniew Żak Memorial in Cracow, Cracow, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Łoboda
authors.affiliation: Department of Orthodontics, Medical University in Łódź, Łódź, Poland.
authors.forename: Elżbieta
authors.initials: E
authors.lastname: Pawłowska
keywords: Age Determination by Skeleton; Age Determination by Teeth; Malocclusion, Angle Class II