3 research outputs found
Cephalometric assesement of the cranio-facial pattern skeletal class III in the period of mixed dentition
Suštinu malokluzije III skeletne klase čini smanjena vrednost ugla koji definiše skeletni
sagitalni MVO. Malokluzija III skeletne klase je skeletna disharmonija koja se razvija
postepeno, u toku specifičnog razvojnog procesa, pod uticajem genetskih i negenetskih
etioloških faktora. Cilj ovog istraživanja je da se ispitaju kranijalni, facijalni i dentalni
parametri kod dece sa III skeletnom klasom u doba mešovite denticije. Zatim, da se
uporede sa istim parametrima kod dece sa I skeletnom klasom istog uzrasta i odraslih sa
III skeletnom klasom. Tako bi se utvrdili relevantni parametri za što raniju dijagnozu
ove malokluzije, definisao njen dominantni model u populaciji srpske dece i u skladu sa
tim, sačinio predlog ranog terapijskog protokola.
ISPITANICI I METOD RADA:
Uzorak je formiran metodom slučajnog izbora. Svi ispitanici su imali pisanu saglasnost
roditelja, uz predhodno potpuno informisanje, usmeno i u pisanoj formi o ciljevima
istraživanja. Svakom ispitaniku načinjen je lateralni kefalometrijski snimak u centralnoj
okluziji, standardnom procedurom. Svaki snimak je iscrtan preko paus papira. Najpre su
određene relevantne kefalometrijske tačke, prave i ravni, a zatim su sprovedena
angularna i linearna merenja iz kefalometrijskih analiza: Bjork, Wits, Chang, Downs,
Steiner, Swarz, Tweed. Ispitanici su podeljeni u tri grupe, pri čemu je u svakoj po 50
ispitanika oba pola, koji ranije nisu bili ortodontski lečeni. Prvu grupu čine deca sa
mešovitom denticijom (uzrast 6 – 12 godina života) i III skeletnom klasom (ugao ANB
< 2°). Drugu grupu čine deca sa mešovitom denticijom (uzrast 6 – 12 godina života) i I
skeletnom klasom (ugao ANB = 2° - 4°, ugao SNA = 80° – 82°, ugao SNB = 78° –
80°). Treću grupu čine odrasli ispitanici (uzrast 18 – 26 godina života) sa III skeletnom
klasom (ugao ANB < 2°). Ispitanici iz 1. i 2. grupe podeljeni su u podgrupe prema
godinama starosti na: a - podgrupa uzrasta od 6 godina – 7 godina i 11 meseci, b -
podgrupa uzrasta od 8 godina – 9 godina i 11 meseci i c - podgrupa uzrasta od 10
godina –12 godina. Ispitanici iz 1. i 3. grupe podeljeni su po tipovima malokluzije III skeletne klase, određenim prema poziciji maksile i mandibule u odnosu na kranijalnu
bazu na: I tip - maksilarni ortognatizam i mandibularni prognatizam, II tip - maksilarni
retrognatizam i mandibularni ortognatizam, III tip - bimaksilarni retrognatizam, IV tip -
bimaksilarni prognatizam, V - maksilarni retrognatizam i mandibularni prognatizam i
VI tip - bimaksilarni ortognatizam, koji je definisan samo u 1. grupi...The essence of
the
class III malocclusions is
a
decreased
value of the
angle which defines
sagittal jaw relationships.
This
is
a
skeletal disharmony which develops
slowly, during the
specific
process of
the
development, under the influence of genetic and non
-
genetic
etiological
factors.
The
AIM
of this research
is to
examine cranial, facial and dental
parameters
with
children with
skeletal
class
III
in
the period of
mixed dentition.
Furthermore,
to compare them to the parameters
of
children at the same age,
with I class
skeletal class
and adults with
skeletal
class
III.
That is how we can determine
relevant
parameters for
early diagnostic of this malocclusion, define their dominate model in
Serbian children
population
and
accordingly,
suggest the best early
therapeutic
treatment
protocol. Sample
was
made by random selection. All
the
examinees
had
their
parents’ written
consent
and
had been
fully informed about
the
purpose of this research
in both aural and
written form.
Lateral
cephalometric
images were
done in central occlusion
using
standard
procedure
for all the patients.
Each image was drawn on
the tracing paper.
First, the
relevant cephalometric
marks, lines
and planes were specified and then the
angular and
linear
measurements
from cephalometric analysis were performed: Bjork, Wits, Chang,
Downs, Steiner,
Swartz, Tweed.
The examinees
were divided into three groups. Each group
consisted of
50
examinees, male and female, with no
previous
orthodontic treatment.
The
first group
consisted of
children with mixed dentition (aged
6
-
12) and
skeletal class
III
(ANB
˂
2°).
The second group
consisted of
children with mixed dentition
(aged
6
-
12
years)
and
skeletal class
I
(
ANB
= 2°
-
4°, SNA
=
80°
-
82°, SNB
=
78°
-
80°).
The third
group
consisted of
adults (aged
18
-
26) with
skeletal
class
III
(ANB
˂
2
°
).
The examinees
from
the first
and
the second
group
were
divided
in
to
two subgroups
by their age: a) subgroup
aged
6
-
7
and
11 months, b)
aged
8
-
9 and 11 months and
c)
aged
10
-
12.
The
examinees
from
the first
and
the third
group
were
divided
by the type of skeletal class III
malocclusion
determined by
the maxillas and mandibles position in comparison with
cranial base:
I type
-
maxilla
r
is
orthognat
h
is
m and mandibles prognat
his
m, II type
- maxillas
retrognat
h
ism
an
d mandibles orthognat
h
is
m
, III
type
-
bimaxillar
retrognat
h
is
m,
IV type
-
bimaxillar
prognat
h
is
m,
V
type
-
maxillas
retrognat
h
is
m
and mandibles
prognat
h
is
m and
VI type
–
bimaxillar
orth
ognat
h
is
m, which
was
defined only in
the
first
group..
Radiographic cephalometry assessment of the linear and angular parameters on cranial base in children with skeletal class III
Background/Aim. In malocclusion of skeletal class III, mandible is located in front of maxilla in sagital plain, which is manifested by a lower value of the sagital inter-jaw angle than in skeletal class I, where the jaw sagital relation is normal. Apart from the deformities on mandible and/or maxilla, in skeletal class III deformities are also frequent on the cranial base. The aim of this research was to find the differences in the parameter values on the cranial base among the children with skeletal class III and the children with skeletal class I in the period of mixed dentition. Methods. After clinical examination and orthopan-tomography, profile radiography of the head was analyzed in 60 examinees, aged from 6−12 years. The examinees were divided into two groups: group 1 - the children with skeletal class III; group 2 - the children with skeletal class I. Both linear and angular parameters on the cranial base were measured, as well as the angles of maxillary and mandible prognatism and the angle of sagital inter-jaw relation. The level of difference in the parameter values between the groups was estimated and the degree of correlation of the main angle of the cranial base with the angles of sagital position of the jaws in each of the two groups was established. Results. A significant difference between the groups was found only in the average values of the angles of maxillary prognatism and sagital interjaw relation. In the group 1, the main angle of the cranial base was in a significant correlation with the angles of sagital positions of the jaws, while in the group 2, such significance was not found. Conclusion. There were no significant differences in the parameter values on the cranial base between the groups. There was a significant correlation of the main angle of the cranial base with the angles of sagital position of the jaws in the group 1 only.
CANNED MEAT PRODUCTS FOR MEMBERS OF THE SERBIAN ARMED FORCES: Na, K, Ca, AND Mg CONTENT AND HEALTH RISKS/BENEFITS
Macroelements such as Na, K, Ca, and Mg play a significant physiological role, and their inadequate intake has been linked to severe diseases, such as high blood pressure. Data on risk assessment for human health in Serbia, from the intake of these macroelements through the consumption of canned food, are minimal. Therefore, the content of Na, K, Ca, and Mg in five types of canned meat that members of the Serbian Armed Forces regularly use was examined. Macroelements were determined by inductively coupled plasma mass spectrometry in cans of beef goulash, pork ragout, spam, liver pate, and meatballs in tomato sauce, which were stored from one month to six years. The sodium content was significantly higher than the potassium content in all types of food, so the Na/K ratio below 1, desirable for good health, was not found in any of the analyzed products. Also, a significant number of samples had an unfavorable Ca/Mg ratio above 1. However, due to the low consumption of canned food by members of the Serbian Armed Forces, its contribution to the average daily intake of macroelements is almost negligible. The concentration of macroelements decreased with the shelf life, while a significant source of Ka and Mg, among analyzed ingredients, was ground red pepper. © 2022 University of Belgrade - Faculty of Agriculture. All Rights Reserved