Egyptian Orthodontic Journal最新文献

{"title":"Buccal bone graft with surgically assisted rapid maxillary expansion in young adults: a cone beam computerized tomographic study","authors":"Abdullah M Agniah, A. Bedwehi, H. Al-khalifa, W. Mohandes","doi":"10.21608/eos.2018.77144","DOIUrl":"https://doi.org/10.21608/eos.2018.77144","url":null,"abstract":"","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125907303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the effect of systemic omega-3 polyunsaturated fatty acids on post-orthodontic relapse in a rabbit model","authors":"Asser Gad, Essam M. Abdallah, Nadia El-Harouni, Samia Soliman","doi":"10.21608/eos.2018.77151","DOIUrl":"https://doi.org/10.21608/eos.2018.77151","url":null,"abstract":"Introduction: Long term stability is the major goal of orthodontic treatment. Hence, a series of safe pharmacological agents have been investigated to increase osteoblastic activity around orthodontically moved teeth to help in retention and stability of their correction. Aim of the study: To evaluate the effect of systemic administration of Omega-3 fatty acids on post-orthodontic relapse, and to histologically assess bone changes concurrent with its administration in rabbits. Materials and Methods: Thirty two adult albino male rabbits were divided equally and randomly into two groups. Each group received NiTi coil springs installed on mandibular first molars and ligated to anterior incisors. Omega-3 or Saline were given from day one of orthodontic tooth movement (OTM) till end of relapse period by oral gavage. After 21 days of active OTM, appliances were removed from both groups to allow orthodontic relapse (OR); then amount and percentage of relapse were measuredon days 21, 28 and 42. Animals were sacrificed for histomorphometric analysis of alveolar bone remodeling. Results: A significant difference in relapse percentage was found on the third week of OR with means (66.04 ± 6.01 %) and (75.22 ± 13.61%) for experimental and control groups, respectively. Histomorphometric analysis showed a significant reduction in the area of active bone-resorptive lacunae and a significant increase in newly formed bone area related to omega-3 group. Conclusions: A strong evidence of the osteoblastic simulative effect of Omega-3 had been found with decreased percentage of OR after OTM.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122009493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of direct miniplate anchorage in conjugation with Forsus Fatigue Resistant device in class II growing females: a randomized controlled trial","authors":"Sherif A. Elkordy, A. Aboulezz, M. Fayed, Mai H Aboulfotouh, Y. Mostafa","doi":"10.21608/eos.2018.77159","DOIUrl":"https://doi.org/10.21608/eos.2018.77159","url":null,"abstract":"Objective: The current randomized clinical trial aimed toevaluate the use of direct miniplates anchorage in conjunction with the Forsus Fatigue Resistant Device (FFRD) in treatment of skeletal Class II malocclusion. Material and Methods:48 Class II femaleswere randomly allocated to either the conventional Forsus (FFRD) group (16 patients, mean age 12.1±0.9years) Forsus with miniplates (FMP) group (16 patients, mean age 12.5±0.9 years), or untreated control group (16 subjects, mean age 12.1±0.9 years). After the leveling and alignment stage, miniplates were inserted in the mandibular symphysis in the FMP group. FFRD was inserted directly on the miniplates in the FMP and onto the lower wire in the FFRD group. The appliance was removed after reaching an edge to edge incisor relationship. Results: The effective mandibular length significantly increased in the FMP group only (4.05±0.78).no significant differences were found in the maxillary dimensions. The upper incisors retroclined in the FFRD and FMP groups with no difference between them. The lower incisors showed a significant proclination in the FFRD group (9.17±2.42) and non-significant retroclination in the FMP group. Soft tissue parameters were improved in both treatment groups. Conclusion: The use of miniplates with the FFRD was successful in increasing the effective mandibular length in Class II malocclusion subjects in the short term. The unfavorable proclination of the lower incisors was evident with the conventional FFRD but was successfully eliminated with the miniplates anchorage. 19 Volume 54 – December 2018 Egyptian Orthodontic Journal Registration: This trial was registered at ClinicalTrials.gov with an identifier number: NCT02475785. Clinical Relevance: The current trial proved the efficiency of the use of miniplates anchorage with FFRD in enhancement the skeletal outcomes of Class II treatment. The technique is advocated for use in Class II subjects having pre-treatment proclined lower incisors. INTRODUCTION Scientific background and explanation of rationale: Mandibular retrusion was reported to be the most common characteristic of Skeletal Class II malocclusion . Class II profile attractiveness was previously investigated in the literature. It was found that patients, laypersons, orthodontists and oral surgeons, rated subjects with Class II profiles as nonattractive . Fixed functional appliances (FFA) are considered an attractive alternative over removable functional appliances (RFA) for treatment of Class II malocclusion in growing children; where the factor of patient cooperation is controlled. The Forsus Fatigue Resistant Device (FFRD), (3M Unitek Corp, Monrovia, Calif), is a semi-rigid FFA that was reported to be efficient and well-accepted by the patients. Recently, systematic reviews concluded that the skeletal effects of RFAs and FFAs could be considered of negligible clinical importance. This could be attributed to the anchorage loss accompanied by these appliances that co","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130118169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Study of the Rate of Tooth Movement Between Corticotomy and Piezocision to Facilitate En-Masse Retraction in Bimaxillary Protrusion.","authors":"Rehab Khalil, W. Abbas, W. Refaat, A. Ramadan","doi":"10.21608/eos.2018.77155","DOIUrl":"https://doi.org/10.21608/eos.2018.77155","url":null,"abstract":"","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125545418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antiibacterial effect of orthodontic adhesive containing titanium dioxide nanoparticles: An experimental animal study","authors":"M. Moustafa, Abbadi El Kady, Mohamed Nadim, E. Soliman, Reem M Hazem","doi":"10.21608/eos.2018.77116","DOIUrl":"https://doi.org/10.21608/eos.2018.77116","url":null,"abstract":"Introduction: The most important goal of orthodontic treatment is to improve esthetics in the dentofacial region. Demineralization around orthodontic brackets is a discouraging sequela during and after orthodontic treatment. In order to overcome this phenomena, TiO2-NPs was added to orthodontic adhesives to assess its antibacterial effect. Materials and Methods: Twenty healthy albino rats were randomly divided into two groups. A small increment of commercial unmodified composite was placed on the lower central incisor of rats for study group. A small increment of composite containing TiO2-NPs was placed on the lower central incisor of rats for study group. For antibacterial test, a swab was taken every week to for counting S. mutans and total bacterial count in both groups. Results: Results showed significant reduction in bacterial counting for S. mutans and total bacterial count in study group more than that of control group. Conclusion: TiO2-NPs is a promising antibacterial agent and may play a major role in preventing WSLs which developed during orthodontic treatment. INTRODUCTION Orthodontic appliances can affect the self-cleaning ability of teeth, alter the oral micro flora and increase the levels of acidogenic bacteria. These bacterial byproducts causes demineralization and formation of WSLs which formed around fixed orthodontic attachments. These can cause caries thereby leading to poor esthetics and patient dissatisfaction. Due to antibacterial capabilities of certain NPs, these have been incorporated in orthodontic adhesives to control the oral biofilm and reduce the demineralization around the brackets. Since certain NPs have antibacterial activity directly on bacteria and indirect by providing smooth surface both inhibit bacterial growth and plaque accumulation, so in the current study we are going to evaluate the antibacterial effect of the composite containing TiO2-NPs.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127397423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of some carbonated drinks on force decay of elastomeric chains: An in vitro study","authors":"S. Sallam, A. Ramadan, Wallaa Elgamy","doi":"10.21608/eos.2018.77119","DOIUrl":"https://doi.org/10.21608/eos.2018.77119","url":null,"abstract":"The aim of this study was to evaluate the effect of some carbonated drinks on the force decay properties of commercially available elastomeric chains. 200 short elastomeric chains of two types, conventional and memory chains, were evaluated under the same conditions (150-200 gm at 25 mm). The samples were divided in five groups (40 chains for each group). The control group represented by artificial saliva and four test groups represented by orange based drinks, lemon based drinks, diet pepsi and regular pepsi. The Force was measured at five different time intervals: At initial, 24 hours and 7, 14 and 21 days by a digital force gauge. The result showed that there were significant differences among groups. Statistically significant effects of time on force decay were seen in all groups. Statistically significant difference was found between conventional and memory chains.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133410754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative study of root resorption between two methods for accelerated tooth movement","authors":"Ahmad Elkalza, A. Rateb","doi":"10.21608/eos.2018.77118","DOIUrl":"https://doi.org/10.21608/eos.2018.77118","url":null,"abstract":"","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133053081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Er,Cr:YSGG laser and CPP-ACP on the prevention of enamel demineralization: In vitro study","authors":"Samar M. Adel, E. Marzouk, N. Harouni","doi":"10.21608/eos.2018.77120","DOIUrl":"https://doi.org/10.21608/eos.2018.77120","url":null,"abstract":"Objectives: This study was conducted to compare the effect of Er,Cr:YSGG laser, Casein Phosphopeptide Amorphous Calcium Phosphate (CPP-ACP), and the combined effect of their use on the prevention of enamel demineralization in a sample of extracted premolars.Firstly, using stereomicroscope to assess the severity of the White Spot Lesions (WSLs) visually and secondly, using polarized light microscope to assess the lesions depth. Materials and Methods: Eighty sound extracted premolar teeth were randomly allocated to four equal groups (n=20). Group I: Control group received none of the preventive treatments. Group II: CPP-ACP topical application. Group III: Er,Cr:YSGG laser irradiation. Group IV: Er,Cr:YSGG laser irradiation followed by CPP-ACP application. Specimens were subjected to thermocycling and brushing challenge protocols equivalent to 1 year in oral environment. Then, all teeth were subjected to acid challenge. Each tooth was examined visually and photographed using stereomicroscope to assess the severity of the WSL. The teeth were then sectioned longitudinally and examined under polarized light microscope and the depth of the lesions were measured and compared between the four groups. Results: The combined use of laser and CPP-ACP (Group IV) resulted in the formation of the least severe WSLs and the least lesions depth with a statistically significant difference between group IV and the other three groups.Group IV resulted in 92.5% less lesion depth when compared to the control group. CPP-ACP alone and laser alone also showed a significant difference in the severity of WSLs and lesion depth when compared to the control group, however; no significant difference was found between them. Conclusions: The combined use of Er,Cr:YSGG laser and CPP-ACP showed the best prevention against the development of WSLs regarding the severity and depth. The use of CPP-ACP alone or laser alone also resulted in a significant reduction in lesion depth and severity but was significantly less than their combined use. No significant difference was found between the CPP-ACP alone and laser alone groups.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132768405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laboratory evaluation of shear bond strength of three different bonding systems for orthodontic brackets","authors":"Ahmed R. Elkalza, D. Mostafa","doi":"10.21608/eos.2018.77121","DOIUrl":"https://doi.org/10.21608/eos.2018.77121","url":null,"abstract":"Objectives: The aim of this study was to evaluate the shear bond strength of three different types of bonding systems for orthodontic brackets to tooth surface. Materials and Methods: Sixty sound premolar teeth divided randomly into three groups of 20 each. In group A, the brackets were bonded using conventional etch system. In group B, brackets were bonded using self-etch primer system, while in group C, brackets were bonded using one step adhesive system. Premolar teeth were mounted with cold acrylic resin in metallic mold and brackets were shear tested to failure using universal testing machine recorded in Newton for all specimens. Results: Group C shows significantly higher value of shear bond strength in comparison to groups A and B, while there was no significant difference between group A and B. Conclusion: Orthodontic brackets bonded to enamel surface using one-step bonding system (GC ortho connect) without primer was significantly higher than brackets bonded using conventional or self-etch systems.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122575260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of premolar extraction and incisor retraction on the soft tissue in adult skeletal open bite subjects with miniplate anchored intrusion of maxillary posterior teeth","authors":"E. Marzouk, Hassan E Kassem","doi":"10.21608/eos.2018.77117","DOIUrl":"https://doi.org/10.21608/eos.2018.77117","url":null,"abstract":"Objective: This study was conducted to determine the effect of premolar extraction and incisor retraction on the soft tissue profile of skeletal open bite adults following maxillary posterior teeth intrusion. Materials and Methods: Lateral cephalometric radiographs of 28 adults with skeletal open bite (age = 22.6 ± 2.1 years) were taken following molar intrusion with zygomatic miniplate skeletal anchorage and after four first premolars extraction. Several soft tissue variables were measured. Correlations, mean ratios and regression equations between the change in lip position and incisor retraction were calculated. Results:Both the upper and lower lips moved backwards by 3.46 mm ± 0.84 mm (P ≤0.01) and 0.87 mm ± 0.23 mm (P ≤ 0.05) respectively, with a significant reduction in the angle of convexity by 1.36° ± 0.24° (P ≤ 0.05). Strong correlations were found between the amount of upper incisor retraction and backward movement of the upper lip with a mean ratio of 1.04:1 (r = 0.812, P ≤ 0.01) and with the reduction of soft tissue convexity angle with a mean ratio of 2.65:1 (r = 0.814, P ≤ 0.01) and between the lower incisor retraction and backward movement of the lower lip with a mean ratio of 0.76:1 (r = 0.802, P ≤ 0.01). Conclusion: The pattern of change in soft tissue profile in this study was similar to studies of premolar extraction without prior molar intrusion. However, the ratio of change of upper lip position relative to the upper incisor retraction was higher compared to ratios reported in the literature which may be attributed to the underlying long face skeletal pattern.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121102464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}