2024-03-29T00:24:34Z
https://eos.journals.ekb.eg/?_action=export&rf=summon&issue=11755
Egyptian Orthodontic Journal
1110-435X
1110-435X
2015
48
December 2015
Maxillary symmetry, mandibular symmetry and condylar position in functional unilateral posterior cross bite patients
Ahmed
Madian
Nadia
El-Harouni
Essam
Abdallah
Objective: To investigate mandibular symmetry, maxillary symmetry and condylar position in patients with functional unilateral posterior crossbite (FUPXB) using Multi-slice computed tomography (MSCT). Materials and Methods: 15 patients (mean age 13 ± 3 years) with FUPXB underwent MSCT scans. Skeletal and dental measurements were taken to assess mandibular and maxillary symmetry. Medial and Lateral Joint spaces were compared between normal and crossbite sides in those patients. Results: There were no statistically significant differences between crossbite and normal sides regarding skeletal and dental mandibular and maxillary measurements and regarding condylar position. Conclusions: patients with FUPXB showed mandibular and maxillary symmetry. Those patients revealed symmetric condylar position between normal and crossbite sides.
2015
12
01
11
22
https://eos.journals.ekb.eg/article_78699_b3778706849b9d4fc90f79245481f15f.pdf
Egyptian Orthodontic Journal
1110-435X
1110-435X
2015
48
December 2015
Effect of low level laser on root resorption with en masse maxillary anterior retraction: A randomized clinical trial
Tarek
Yousry
Nadia
El-Harouni
Nagwa
Enany
The aim of this RCT is to study the effect of low level laser therapy (LLLT) with en masse maxillary anterior retraction in class II division 1 female patients on root resorption. Materials and Methods: 20 non-growing female patients were randomly allocated in 2 groups: Group I receiving LLLT 4 times/month (0, 3, 7 and, 14) days of activation, Group II receiving no laser therapy. CBCT was taken at T1 (prior to retraction) and T2 (after closure of spaces). Root resorption was evaluated by analyzing both root length (RL) and root area (RA) of six anterior teeth and compared between T1 and T2. Results: Root resorption was detected in all teeth in both groups with significant difference between the two groups regarding RL and RA (P<0.01).No significant difference recorded between the percentage change in RL and RA in both groups. Conclusion: Low-level laser therapy had no effect whether directly or indirectly on amount of apical root resorption during in masse retraction.
2015
12
01
23
36
https://eos.journals.ekb.eg/article_78700_39b5ddfdb0e98b5e66c87f89da2a2d2e.pdf
Egyptian Orthodontic Journal
1110-435X
1110-435X
2015
48
December 2015
Sydney Magnoglide- Influence of magnetic forces for class II corrections - Preliminary results of a pilot study
Shazia
Naser-ud-Din
M.
Darendeliler
Paul
Taylor
Chien
Tan
Objective: To investigate the influence of magnetic forces on the skeletal and dentoalveolar effects for the correction of Class II malocclusion using the Sydney Magnoglide design with or without magnets. Study Design: An Inter university Prospective Randomized Controlled Clinical Trial Place & Duration of Study: Universities of Sydney and University of Queensland, Australia from March 2011 to August 2012. Methodology: Final sample size comprised of 12 subjects in Sydney magnoglide magnetic version at University of Sydney compared to 13 in the non-magnetic version at University of Queensland, Brisbane, Australia. A strict selection criteria was followed to ensure comparable groups hence the sample size. Lateral cephalograms were taken prior to treatment and immediately after functional correction. Pancherz analysis utilized. Comparisons performed with Student’s t-tests significance set at (P <0.05). Results: The two groups were fairly homogenous reducing the selection bias. Overall treatment was successful for all patients treated either with the magnetic or non-magnetic Sydney Magnoglide. Conclusion: Based on the statistical results and the limitations of the current study the non-magnetic and the magnetic Sydney Magnoglide appliance seem to be equally effective in this pilot study.
Magnets Nd2Fe14 Br
Functional Appliance
Sydney Magnoglide
Pancherz analysis
2015
12
01
37
54
https://eos.journals.ekb.eg/article_78703_62ec038b40da6244ad9ba3cb6c9e21d3.pdf
Egyptian Orthodontic Journal
1110-435X
1110-435X
2015
48
December 2015
Evaluation of three methods of surface treatment for bonding orthodontic metal brackets to resin composite in vitro
Sherif
Darwish
Hassan
Abdallah
Mohamed
Mowafy
Objective: The aim of this study is to compare shear bond strength of orthodontic stainless steel brackets to resin composite surfaces In vitro using three different methods of surface treatment. Materials and methods: 60 composite resin discs, 6 mm in diameter and 2 mm in height, were prepared and aged by immersion in water for 4 weeks. After ageing, the specimens were randomly assigned to one of the following groups: (1) Control with no surface treatment, (2) 99 per cent Acetone, (3) methyl methacrylate monomer, (4) Diamond bur. The metal brackets were bonded to composite surfaces by means of an orthodontic adhesive. All specimens were stored in water for 1 week. Shear Bond Strength values were tested using a universal testing machine at a crosshead speed of 1 mm/minute, the brackets bases and corresponding RC discs were examined under stereomicroscope at 10X magnification for adhesive remnant evaluation. Shear bond strength values were analyzed using 1-way analysis of variance (ANOVA)), Adhesive remnant index scores were analysed using Chi-square test using Monte Carlo correction. Significance of the obtained results was judged at the 5% level (P ≤ 0.05). Results: The results of 1-way ANOVA for SBS means showed no statistical significant difference among the 4 groups (P = 0.564). The result of Chi-square test for ARI scores between the four groups showed a statistically significant difference (MCp = 0.039). Chi square comparisons of ARI scores showed statistically significant difference only between group 1 (control) with groups 3 (P1= 0.003) and group 4 (P1= 0.046)
2015
12
01
55
69
https://eos.journals.ekb.eg/article_78707_0647f45e8508c38a90790bdcbc7acafd.pdf
Egyptian Orthodontic Journal
1110-435X
1110-435X
2015
48
December 2015
Effect of nano-hydroxyapatite versus caesin-phosphopeptide amorphous calcium phosphate on remineralization of early enamel lesions - In vitro study
Yomna
Yacout
Mohamed
Mowafy
Essam
Abdallah
Objective: To evaluate and compare the effect of zinc carbonate - nano hydroxyapatite (n-HA) (Biorepair toothpaste) and casein phosphopeptide - amorphous calcium phosphate (CPP-ACP) (GC Tooth Mousse creme) on the depth of white spot lesions (WSLs). Materials and Methods: Thirty six human premolar teeth with artificially induced WSLs were randomly assigned to three groups (n=12). Group I: n-HA toothpaste, Group II: CPP-ACP topical creme, and Group III: negative control. The teeth were longitudinally sectioned and photographed using polarized light microscopy (PLM) and the depth of enamel subsurface demineralization was measured. Statistical analysis was performed. Results: The n-HA group showed the least mean lesion depth, followed by the CPP-ACP group (76.8 ± 10.2 μm and 79.8 ± 9.7 μm respectively), while, the control group showed the largest mean lesion depth (107.8 ± 8.5 μm). The difference between the control group and each of the test groups was significant (p < 0.001), while there was no significant difference between the two test groups. Conclusion: Both n-HA and CPP-ACP showed significant remineralization of the early enamel lesions compared to the control group.
2015
12
01
71
84
https://eos.journals.ekb.eg/article_78711_66fc52f7abb1fc4ae5db922c43e9b89a.pdf
Egyptian Orthodontic Journal
1110-435X
1110-435X
2015
48
December 2015
Location of palatally impacted canine and its effect on root resorption using CBCT
Samier
Elhebieshy
Sherif
Morcos
Ahmed
Ramadan
Background: Maxillary canines are important aesthetically and functionally, but impacted canines are more difficult and time consuming to treat. Moreover, impacted canines vary greatly in the inclination and location and can lead to resorption of neighboring incisors. Aim: To locate the impacted canine and compare resorption cases with non-resorption cases. Methods: Thirty -five 3 D CBCT scans were evaluated 17 presented with bilateral palatal impactions and 18 with unilateral impactions. Fifty –two canines were divided in two groups: group A: included impacted canines causing resorption to neighboring teeth and group B: impacted canines not causing resorption. Canine axis inclination, horizontal cusp location and distance to nearest adjacent tooth were recorded. T-tests (paired, student) determined the significance (P≤0.05) performed to evaluate the effect of resorption within and between each group. Results: Twenty–one canines caused resorption (40%) of the lateral incisor while there were 31 canines not causing resorption. Palatally impacted canines causing resorption to the adjacent teeth showed higher inclination of their axis to the midsagittal plane. Conclusions: Palatally impacted canines have high chance of causing resorption to adjacent teeth. As the canine is more medially located there is an increased chance of resorption especially when the cusp of the maxillary canine was positioned medially to the long axis of the lateral incisor. Highly significant correlation between palatally impacted canines in contact with neighboring teeth and resorption was found.
Palatally impacted canine
CBCT
root resorption
2015
12
01
85
96
https://eos.journals.ekb.eg/article_78718_349c0ab8d5a8635c0575a7460685c837.pdf