Prediciting growth and evacuating g th potentials in o } z z~7}0}7~ r~3N~~ o ´F}~~
malocclusion patients are important `not only fo; teatment L ate´ o o L_ L o
planning but also for evaluating treatman! res0´t3 and prognosis (chronolOglc age) j4 IJ--4o (developmental age)
during retention period. Studying growth and development, }~ L jl JqO4
therefore, is essential in orthodontic therapy. The age at onset 0 -0- l ~ 7 7N
o ~~ T~ o 7~~ L L i
cf menarche is one of the important indicators of physical o ,to o}o okAo o Ao o~ o} a a
~~ 4 }
maturation in adolescence, and it can provide help in es`imating
the degree of sl:eleta´ maturation. o ji7} 7,] 11t}T~ 7qO&] 11~o~ o1E}~,z til 73~ ;o
h the present study, the age at onset of menarche was ZL ~0 o } IAj 0 P-jt~
p}7j1 ~7} TL ~~ a o a~Q
analvzed in 617 patients (263 with Class I malccclut en, 189 w ,r ,L 7} 1 z
L LT~~ - ,iT .url´
Class II maiocclusion, 165 with Class Ili maloech sicn) betere --
orthodontic treatment. >~1Ih, 07 0-1 107 t-ry17~:´Jj=1 i
~yTZ 1
{ 7}71. Aj~F]t´ 1 Pj8q Aj 01* I_t LL~I
1. The average age at onset of menarche was 12.82-1.10,
2: The average age at onset of irIenarche for eech group was : ado ice, Flo}~o ~ - ~l~Q y ´ o O1 ~´ o &
12.74-1.09 for Class i malocdusion group, 13.14-1.05 for nt 4 11 ~t j p =1 1
Class II malocclusion group and 12_.611.11 *o- Class IN 107 rlaB ~}o j, of~j~> } ~~ o z
malocclusion, group, showing late onset of menarche for Class v} r o d ~~rt oArt
yl `T
II malocclusion group.
3. The average age at onset of menarche for age groups L71011L of,kl-,kOj ol(secondary sexual Characteristics)
shot/ed:´ 13.591.01 for those born between 1961 and 1970, V
~ 01 ~al~olu~ olajt} Aj j,t "-I_-7}
I
13.021.11 for those born between 1971 and 1980,´ and ´- o L o 0
12.46-0.96 for those born after 1981. 5047P.- - Io~ A -p-z T 012= ~ 011,7t~JAJj A1n,(p~1C
4. The onset of, menarche in all three malocclusion groups u II ( %Y!
showed accelerating secular trends.
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