Original scientific paper

Orthodontic Anomalies and Differences in Gnathometric Variables in Twins

Vladimir Lapter ; School of Dentistry, Orthodontic Department, University of Zagreb, Croatia
Mladen Šlaj ; School of Dentistry, Orthodontic Department, University of Zagreb, Croatia
Želimir Muretić ; School of Dentistry, Orthodontic Department, University of Zagreb, Croatia
Dragutin Weber ; Public Medical Centre, Varaždin, Croatia

Abstract

Actuality of gnathometric measurements by means of plaster casts persisting to the present days is stressed and the major research of the kind in twins mentioned. The study included 96 pairs of twins of both sexes (36 monozygotic and 60 dizygotic). Both qualitative and quantitative variables were evaluated and the results computer-processed. For most parameters evaluated, statistical processing revealed a markedly higher compatibility in monozygotes than in dizygotes. This held particularly true for types and severity of anomalies as well as for all qualitative variables, with the exception of over bite, overjet, class and class severity. The maxilla-related variables were shown to be highly genetically determined, which might be explained by the dynamics of manidbular movements andpossibly, a stronger effect of external factors on its growth and development.

Keywords

gnathometric variables; twins

Hrčak ID:

100777

URI

https://hrcak.srce.hr/100777

Publication date:

15.1.1991.

Article data in other languages: croatian

Visits: 1.057 *