Prevalence of Dentel Fluorosis among high School Students in Nazareath, Ethiopia.
No Thumbnail Available
Date
1986-09
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Abeba Universty
Abstract
JL cross-sectional study of the prevalence of
dental fluorosis among Nazareath higb school student
population and determination of the concentration of
fluoride in tne water supoly of t he town was carried
out in June 1986 . Of the 4092 9th , l0th and 11th
grades student population 1023 (25%) students '!Jere
selected f or dental examination and interview by the
process of random sampling method using t a bl e of ran dom
numbers . Out of the 1023 s tud en t s , 821 (80 . 3%) responded
to t~e s t udy. Of the 821 , 334 (40 . 7%) are born i n
~Iazareath , 58 (7.1%) are b orn in ':ionji , Koka , lolenchiti
and Hetehar a snd the remaining 429 students (52 . 2%) are
born in othe r ol aces Rn~ a rri ved to live in Nazareath
a t di ffe r ent year of their ages. The prevalence of
dental fluoro Gis a~ong the High School student population
is found to be 38 . 2% with no s tatistic a lly s ignifican t
differ enc e betwe en the mal es (36 . 9%) and femal es ( 40 . 9%)
(x
2 = 0 . 77 , x
2
95 ( 1 d. f) = 3.84 , x
2
99 (1 d.f) = 6 .63,
P ", 0 . 01 , P 0 . 05) . i.nd the preva l enc e among those born
and brought up in ~azR r ea th is 69 . 1% with significant
difference when comnar ed to thos e who have come to live
in Nazareath at differ en t times of t heir age
(x
2
= 232 . 19, x2 99 ( ) d . £) = 11.34 , (p < 0 : 01) . There i s
also sta tistically significant difference among the
differen~ ege groups with the young er age gr oups the
percent being high (x
2
= Yf . 22 , x
2
99 (~ d . fJ = 13 . 27 , P <0 . 01 ) .
v iii
Water samples from thr ee functioning sourc es of
water SuoJply for trle to',1n ( g wells junction- main
suppliers of t he town for the last 23 year s , Deke- Hadi
and High way \l; ells - recently dug or on us e tV10 wells ,
1983, 1984 r espectively) are also analysed and the
results indicate high fluoride l evel (5.30, 1.32, and
1.16mg/litre of wat e r , respec t ive l y .
Thus th ere is an assoc i at i on between t he
flu oride cont en t of the water su~)ply and the prevalence
of dental fluorosis in those that are born and brought
up in Nazareath and those that have arrived t o Nazareath
at an e a r l i e r age of th eir life .
Description
Keywords
Prevalence of Dentel F luorosis