Vol.13, No 1, 2006 pp. 36 - 43
UC 616.314.3-089.23
INFLUENCE
OF THE SIZE OF INCISORS
ON THE OCCURRENCE OF CROWDING
Mirjana Janošević1,
Gordana Filipović1, Saša
Stanković2, Olivera Tričković
Janjić3
1Clinic of Dentistry, Faculty of Medicine,
Department of Orthodontics, Niš, Serbia
2Clinic of Dentistry, Faculty of Medicine,
Department of Prosthetics, Niš, Serbia
3Clinic of Dentistry, Faculty of Medicine,
Department of Preventive and Pediatric Dentistry Niš, Serbia
Summary. The size of teeth is one of the crucial factors
affecting occlusion formation. In the occurrence of the crowding of
dental strings, the size of teeth has a significant role. The aim of
the study was to determine the influence of the size of permanent
frontal teeth (bicuspids) on the appearance of the crowding of the
frontal segment of dental strings. The study included 140 subjects,
aged 15-20 years. All the examinees were divided into two groups. The
first group comprised 90 subjects (39 males and 51 females) who had
marked symptoms of crowding, especially in the frontal segment. The
second group comprised 50 subjects (20 males and 30 females) with
normal occlusion. The measurement was performed using a digital nonius,
0.01mm of accuracy. The following parameters were examined: mesiodistal
(MD) and vestibulolingual (VL) diameter of the maxillary and mandibular
incisors. The index of the crown of the tooth was calculated using the
formula MD-VL x 100. The results of the study show that males have
significantly wider teeth both in the upper and the lower jaw. The same
results were obtained for subjects with crowding and subjects with
normal occlusion. The vestibulolingual diameter of the maxillary and
mandibular incisors in subjects with normal occlusion is greater in
males. The vestibulolingual diameter of permanent incisors in subjects
with crowding shows a sex-related dimorphism only with lateral incisors
in the upper jaw. A statistically significant difference at a lower
level of significance of the tooth crown index for upper incisors was
observed in females, while the index of the crown of lateral incisors
in the lower jaw did not show significant sex-related differences.
Key words: Tooth size,
incisors, crowding
UTICAJ VELIČINE SEKUTIĆA NA NASTANAK
TESKOBE
Kratak sadržaj: Veličina zuba je jedan od bitnih faktora koji
utiče na formiranje okluzije. U nastanku teskobe zubnih nizova veličina
zuba ima značajnu ulogu. Cilj ispitivanja je bio da se utvrdi uticaj
veličine stalnih sekutića na nastanak teskobe frontalnog segmenta
zubnih nizova. Ispitivanjem je obuhvaćeno 140 osoba starosti od 15-20
godina. Svi ispitanici su podeljeni u dve grupe. Prva grupa obuhvata 90
osoba (39 muškog i 51 ženskog pola) sa izraženim simptomima teskobe
naročito u frontalnom segmentu. Druga grupa obuhvata 50 osoba (20
muškog i 30 ženskog pola) sa normalnom okluzijom. Merenja su obavljena
pomoću digitalnog nonijusa sa preciznošću 0,01 mm. Ispitivani su
sledeći parametri: meziodistalni (MD) i vestibulolingvalni (VL) promer
maksilarnih i mandibularnih sekutića. Indeks krune zuba izračunat je
formulom MD-VL x 100. Rezultati ispitivanja pokazuju da osobe
muškog pola imaju šire zube na visokom nivou značajnosti i u
gornjoj i u donjoj vilici, kako kod osoba sa teskobom tako i kod osoba
sa normalnom okluzijom. Vestibulolingvalni promer maksilarnih i
mandibularnih sekutića kod osoba sa normalnom okluzijom veći je kod
osoba muškog pola. Vestibulolingvalni promer stalnih sekutića kod osoba
sa teskobom pokazuje polni dimorfizam samo kod lateralnih sekutića u
gornjoj vilici u korist osoba muškog pola. Postoji statistički
značajna razlika na niskom nivou značajnosti indeksa krune
gornjih sekutića u korist osoba ženskog pola dok indeks krune
donjih lateralnih sekutića ne pokazuje značajne polne razlike.
Ključne reči: Veličina zuba,
sekutići, teskoba, normalna okluzija
