Nada Abdelhamid Abdel, <br/><br/>
Relationship between organizational support and nursing staff burnout / 
 العلاقة بين الدعم المؤسسي والأحتراق الوظيفي لدي هيئة التمريض 
Nada Abdelhamid Abdel ; Somaya A. Bayoumy, Fatma Ahmed Abed 
 - 184 pages :   illustrations ;  30 cm. +   CD. 
<br/><br/>Thesis (M.Sc)-Cairo University, 2021. 
<br/><br/>Bibliography: pages  174-180. 
<br/><br/> 	The current study was conducted to investigate the effect of wire gauge on rate and type of<br/>tooth movement during sliding mechanics and its effect on root resorption of the teeth moved and<br/>amount of anchorage loss.<br/>Total of 36 canines of eighteen adult female patients with age range (16-26) years old who<br/>had dento-alveolar maxillary protrusion necessitating extraction of the maxillary first premolars were<br/>investigated in the study. Canines were retracted using Ni-Ti coil spring extending between canines’<br/>brackets and second molars’ tubes which was used for anchorage while no additional anchorage<br/>means were used. Canines were retracted with 1.5 N force over three archwire gauges (0.016Ⅹ0.022”,<br/>0.017Ⅹ0.025” and 0.19Ⅹ0.025”) St.St wires in three-arm parallel group study. 3D digital models were<br/>used in the assessment of monthly canine retraction rate, which was the primary outcome of the study<br/>and amount of first molar anchorage loss that was secondary outcome. CBCT images were used in<br/>the assessment of other secondary outcomes; amount of canine root resorption, change in canine<br/>tipping, torque and rotation occurred after 6 months of retraction.<br/>The results revealed that there was small difference in the mean rate of canine retraction<br/>between the three groups as canine was retracted by 1.01, 0.67 and 0.7 mm/month in 0.016Ⅹ0.022”,<br/>0.017Ⅹ0.025” and 0.19Ⅹ0.025” St.St groups, respectively with no statistical significant difference<br/>between all groups (P-value=0.2). Canine tipping increased with the decrease in archwire gauge yet<br/>that tipping was of no statistical or clinical significant difference (P-value=0.085, CI= 8.15-11.42).<br/>Root resorption was significantly higher in 0.19Ⅹ0.025” St.St group 1.39±1.23 mm than the other<br/>two groups (0.5±0.66 and 0.41±0.55) mm in 0.016Ⅹ0.022” and 0.017Ⅹ0.025” St.St groups (pvalue=0.024). Additionally, there was statistical significant difference between 0.016Ⅹ0.022” and<br/>0.017Ⅹ0.025” St.St groups regarding amount of anchorage loss (P-value=0.028) with no statistical<br/>significance between any other two groups. The mean value of anchorage loss was 1.71, 2.99 and<br/>2.72 mm in 0.016Ⅹ0.022”, 0.017Ⅹ0.025” and 0.19Ⅹ0.025” St.St correspondingly. For the other<br/>outcomes, there was no significant difference among the groups 
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<br/><br/><br/>Text in English and abstract in Arabic & English. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nursing Administration
<br/><br/><label>Subjects--Index Terms: </label>Organizationalsupport  Burnout  Nursingstaff 
<br/><br/><label>Dewey Class. No.: </label>613