Avtor/Urednik		Primožič, Jasmina; Farčnik, Franc; Ovsenik, Maja
Naslov		Places in the dental arch that show a greater variability in tooth number, shape and position - a prevalence study
Tip		članek
Vir		Arch Oral Biol
Vol. in št.		Letnik 57, št. 6
Leto izdaje		2012
Obseg		str. 744-8
Jezik		eng
Abstrakt		Objective The aim of this study was to assess the frequency of variations in tooth number, shape and position in the dentalarch to determine if there are parts of the dentalarch that show a higher prevalence of tooth variability. Design 198 randomly selected Caucasian subjects (93 females, 105 males) aged between 10.0 and 24.5 years (mean age 14.15, SD 2.34 years) were included. A total of 5544 teeth were examined and dental anomalies of tooth number, shape and position (oral teeth positions and teeth rotations greater than 45⁰) were recorded. Results 18.68 per cent of the subjects had one or more unerupted teeth. Aplasia as the cause of uneruption was found in 12.12 per cent of the subjects, statistically significantly more frequently in females than males (Fisher test, p < 0.05). Tooth shape anomalies were found in 6.57 per cent of the sample, more frequently in males than females (Fisher test, p < 0.05). Oral position of one or more teeth was found in 47.98 per cent of the sample, whilst rotations greater than 45⁰ were found in 15.66 per cent, with no statistically significant differences between females and males. One or more of the observed dental anomalies were found in several tooth types, however all the observed dental anomalies were found only in second premolars and in upper lateral incisor. Conclusions According to the results of this study, it seems that some places in the dentalarch show agreatervariability in terms of tooth number, shape and position. This could be a result of genetic and environmental influences during odontogenesis or a result of evolutionary trends.
Deskriptorji		TOOTH ABNORMALITIES PREVALENCE DENTAL ARCH TOOTH, UNERUPTED ODONTODYSPLASIA CHILD ADOLESCENCE