الفهرس 
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Abstract
Summary and Conclusions
118
The present s[ud" ~ " was designed If) order to evaluate effect of Diode
Gallium Arsenide laser therapy (low level laser therapy) on hone
regeneration in rhe midpalatal suture and evaluate its potential for redu lllg
relapse after rapid maxillary expansion in patients \\ ith transv erse rnaxillary
deficiencv,
The stud) was carried DuI on J 8 patients (3 males and t 5 females},
\ " ~ "
\\ here the sample was collected from the outpatient clinic of Faculty of
Dentistry. Sua-Canal University, \\ ill! means age 12.94 ) ears ranging from
10 10 J..J years \\ uhout any congenital anomalies in the craniofacial
structures Our investigation included uniform R;\U; appliance designs and
activation rates.
The sample was divided into two groups after termination of expansion
randomly using a random number table:
A. Control group (no laser treatment); included 9 patients v, 110 did not
receive soft Iaver therapy after maxillary expansion,
B, Experimental group (with Iase r treatment): included ) patients
\\ ho received soft laser therapy after rnax diary expansion.
The following record, were taken and analyzed at different lime points:
1, Postero-anterior Cephalogramswere traced and measured all patients at
time pointsT, and TI_ to evaluate the efficiency ofRME,
" ~ " The occlusal radiograph (topographic view) using the xame machine and
same angulation for all patients ar time points T”, ’1’1. T> ”1’) and T, and
analyzed u”ing linear measurements and densitometric anaiysrs ,
3. The maxillary arch models for all patients at all time points L, Ti- T2-
f;, I’J and T5. The iruercanine width {ICWl_intermo!ar \\ idth (l\lWI and
4.
Summary and Conclusions
119
5.
the palatal vault depth were measured on the models, \\ hile the palatal
surface area and volume were measured from 3D laser scanned model.
The foll(lwing conclusions can be draw n from the current study:
l . For both lased and unlased gr()up" ~ " R\lE efficiently caused a skeletal
e\pan" ~ "l()n.
1 1,0\’ intensity laser was useful in promoting bone healing following
Rlvn-: at the mid-palatal suture as bone density in lased group showed
" ~ "ignificanI increase starting fj-om 45 days after expansion. \\ hile in
unlased group from 3 months after expansion.
3. Low intensity laser was useful in reducing the long term relapse alter
expansion (’) months after evpan-ion) due to the: early high hone density
at the mid palatal suture area gained by low imcnsnv laser therapy.
" ~ "uggt’" ~ "tion for further inYesligalions:
L To applv the LILT mer a larger sample of patieurs with rZ:v1E for longer
follow -up periods 3 10 5 years after removal of fixed orthodontic
appliance.
2. To studv the effect of LILT ()\ er bone regeneration after other surgical
onhodontic case:” as distraction osteogenesis. orthognathic surgeries ami
transplantations.
3. To apply LILT at different wiJ\c-lengths and number or applications to
e\ aluatc the best inrensuy and timing of applications.
6.