Egyptian Orthodontic Journal最新文献_第2页

Evaluation of anchorage loss of the upper first molar using two different retraction methods: A randomized clinical trial 使用两种不同的牵引方法评估上第一磨牙的锚固丧失：随机临床试验

Egyptian Orthodontic Journal Pub Date : 2024-06-01 DOI: 10.21608/eos.2024.257662.1103

Hamza Rajab Alshamam, Abdullah M Agniah, S. Alsullei

引用次数: 0

CBCT comparison of dental, dentoalveolar and skeletal treatment results of Hyrax expander and monocortical hybrid expander in late-adolescence CBCT 比较 Hyrax 膨体和单皮质混合膨体在晚青春期的牙齿、齿槽和骨骼治疗效果

Egyptian Orthodontic Journal Pub Date : 2024-06-01 DOI: 10.21608/eos.2024.269700.1104

Tawfic Mahmoud Tawfic, W. Refai, K. Mohamed

{"title":"CBCT comparison of dental, dentoalveolar and skeletal treatment results of Hyrax expander and monocortical hybrid expander in late-adolescence","authors":"Tawfic Mahmoud Tawfic, W. Refai, K. Mohamed","doi":"10.21608/eos.2024.269700.1104","DOIUrl":"https://doi.org/10.21608/eos.2024.269700.1104","url":null,"abstract":"Objective: To compare skeletal and dentoalveolar treatment results of using a conventional Hyrax and Hybrid appliances in late-adolescent patients using CBCT scans. Materials and Methods: eighteen patients with maxillary skeletal crossbites, aged between 18 and 21 were selected, divided randomly into a group treated with a conventional Hyrax, and a group with Hybrid appliance using palatal miniscrews with monocortical engagement. The Hybrid appliance was fabricated using a digital workflow; CBCT scans merged with intraoral digital scans, used to virtually position miniscews and fabricating a surgical guide through 3D printing. Both groups followed the same activation protocols. CBCT scans were taken for all patients before and after treatment. These were used for comparing dental, alveolar and skeletal treatment results. The resulting data were statistically analyzed using Shapiro Wilk Normality test and Kolmogorov test, and Paired t test between the pre and post treatment results. Results: Transverse linear and angular measurements were higher in the Hyrax group due to increased buccal tipping, the dentoalveolar linear measurements showed buccal alveolar bone thinning in the Hyrax group, there was statistically significant increase in the right first premolar alveolar inclination in the Hyrax group showing more alveolar bone bending, and the skeletal linear measurements showed more parallel sutural opening with the Hybrid group .In both groups, opening happened more on the right side. Conclusions: Sutural separation was possible with both appliances at the late-adolescent stage with comparable results. However, the Hybrid appliance exhibited less side effects, giving a qualitatively better expansion pattern.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":"28 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141276220","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}

引用次数: 0

Deep bite correction using auxiliary intrusion cantilevers with initial arch wires in adolescents 在青少年中使用带初始弓丝的辅助侵入式悬臂进行深咬合矫正

Egyptian Orthodontic Journal Pub Date : 2024-06-01 DOI: 10.21608/eos.2023.244870.1091

Mona Mostafa El-Maghraby, E. Marzouk, H. Ismail

{"title":"Deep bite correction using auxiliary intrusion cantilevers with initial arch wires in adolescents","authors":"Mona Mostafa El-Maghraby, E. Marzouk, H. Ismail","doi":"10.21608/eos.2023.244870.1091","DOIUrl":"https://doi.org/10.21608/eos.2023.244870.1091","url":null,"abstract":": Deep overbite is a challenging malocclusion facing orthodontists and numerous treatment options were proposed to correct it. The intrusion of lower incisors is found to be particularly practical in patients with adequate upper incisor display. Aim of the study: The purpose of this study is to compare deep overbite correction using auxiliary cantilever springs to relative intrusion during initial stages of orthodontic treatment. Materials and methods: Thirty patients exhibiting deep overbite malocclusion were divided into test and control groups. Test group received auxiliary cantilever springs on top of leveling arches to intrude lower incisors. Control group received sequential leveling arch wires. Treatment effect was evaluated after six months by using lateral cephalometric radiographs to assess incisors, molars and premolars changes. Comparison between T0 (preoperative) and T1 (6 months postoperative) within each group was done using paired samples T-test, while comparison of mean difference of different parameters between both groups was done using Mann-Whitney U test. Results: A mean overbite reduction of 3.2 mm was found in the experimental group. Incisor intrusion was found to be significant in the test group with a mean of -1.33 and -1.31 when measured from center of resistance and apex. Distal tipping of lower 1 st molars was significant in the experimental group (P<0.001) while premolar extrusion was more significant in the control one. Conclusion: Deep bite correction can be achieved during the leveling and alignment phase using cantilever springs with lower incisors intrusion without significant difference in labial tipping other than that created by relative intrusion with continuous sequential archwires.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141278492","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}

引用次数: 0

Evaluating the shear bond strength of rebonded ceramic brackets after using three different techniques for adhesive removal: an in-vitro study 评估使用三种不同技术去除粘合剂后再粘接陶瓷托架的剪切粘接强度：体外研究

Egyptian Orthodontic Journal Pub Date : 2024-06-01 DOI: 10.21608/eos.2023.245444.1094

Fatma Haggag, Walaa Elsayed Mohamed Elgameay, Youssef Sedky, Waleed El-Nagar Refaat

{"title":"Evaluating the shear bond strength of rebonded ceramic brackets after using three different techniques for adhesive removal: an in-vitro study","authors":"Fatma Haggag, Walaa Elsayed Mohamed Elgameay, Youssef Sedky, Waleed El-Nagar Refaat","doi":"10.21608/eos.2023.245444.1094","DOIUrl":"https://doi.org/10.21608/eos.2023.245444.1094","url":null,"abstract":"Objective: The main purpose of the study was to compare the shear bond strength of the rebonded ceramic bracket after using different techniques for removal of the adhesive from the debonded brackets base to find the most favorable method for recycling ceramic brackets. The Research Question of the study was that In recycling of ceramic brackets, would removal of the adhesive from the debonded brackets base using Er,Cr:YSGG laser versus using carbide bur and sandblasting, enhance the shear bond strength of the rebonded ceramic bracket? Materials and Methods: Sixty premolar teeth were randomly divided into 4 equal groups (n = 15) then embedded in resin blocks with their crowns exposed. Sixty upper premolar ceramic orthodontic brackets were used in this study and were divided into 4 equal groups (n = 15) according to different adhesive resin removal protocols; Control Group (New brackets), Laser Group, Sandblast Group, and Handpiece Group. Then ceramic brackets were rebonded and the shear bond strength of the rebonded brackets was evaluated using a universal testing machine. All collected data were statistically analyzed. Results: The highest statistically significant shear bond strength mean value was revealed between control group (13.2302MPa) and handpiece (carbide bur) as it has showed the smallest mean (6.1863MPa). While there was no statistically significant difference between Control group vs Laser group and Sandblast group. Conclusion: Er,Cr:YSGG laser and Sandblasting were efficient for reconditioning of mechanically retentive ceramic brackets.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":"5 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141279153","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}

引用次数: 0

The effect of Atorvastatin on relapse after orthodontic tooth movement 阿托伐他汀对牙齿矫正后复发的影响

Egyptian Orthodontic Journal Pub Date : 2024-06-01 DOI: 10.21608/eos.2023.245026.1092

Amr M Abu-bakr, Ahmed Nasef, Mostafa A Mohammed, Safaa S Ali, K. Mohamed

引用次数: 0

Three dimensional evaluation of maxillary anterior teeth intrusion for treatment of anterior deep bite accompanied with gummy smile using two different biomechanical techniques. 采用两种不同的生物力学技术，对上颌前牙内陷进行三维评估，以治疗前牙深咬合伴牙龈笑。

Egyptian Orthodontic Journal Pub Date : 2024-06-01 DOI: 10.21608/eos.2023.249101.1095

Amr Khaled Hamed, Wael Mobarak Refai, K. Mohamed, Ahmed Nasef Abd EL-Hameed

{"title":"Three dimensional evaluation of maxillary anterior teeth intrusion for treatment of anterior deep bite accompanied with gummy smile using two different biomechanical techniques.","authors":"Amr Khaled Hamed, Wael Mobarak Refai, K. Mohamed, Ahmed Nasef Abd EL-Hameed","doi":"10.21608/eos.2023.249101.1095","DOIUrl":"https://doi.org/10.21608/eos.2023.249101.1095","url":null,"abstract":"Objective: this clinical study was designed to three dimensionally evaluate maxillary anterior teeth intrusion for treatment of anterior deep bite combined with Gummy Smile using TMA arch wire supported on two posterior miniscrews versus direct intrusion on two anterior miniscrews. Materials and methods : A clinical trial was conducted on 20 deep bite and gummy smile patients, divided into two groups. Group A had two miniscrews inserted in between upper second premolars and upper first molars, while Group B had two miniscrews inserted in between upper canines and upper lateral incisors. In group A, 80 gm force was applied from the TMA intrusion arch to the anterior segment, while in group B, an equivalent magnitude of force was exerted by the use of an elastomeric chain, the measurement of intrusion was conducted utilizing CBCT. Results: results showed significant decrease in intrusion measurements with mean difference in incisal edge to horizontal plane 2.72 ± 0.33mm for group A and 2.92 ± 0.17mm for group B. While with mean difference in apex to horizontal plane 2.61 ± 0.4mm for group A and 2.76 ± 0.31mm for group B. Conclusion: The comparison between group A and group B showed no significant difference in intrusion measurements. As both groups used intrusion mechanics near to the center of resistance of the anterior segment and the same amount of force, allowing for similar intrusive effects.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":"66 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141276584","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}

引用次数: 0

Measurement of the rate of maxillary molar distalization using steel bar distalizer 使用钢棒拔牙器测量上颌臼齿拔牙率

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.207115.1069

Youssef Osama, Noha Abdel Rahman, Ramy Abdeldayem

{"title":"Measurement of the rate of maxillary molar distalization using steel bar distalizer","authors":"Youssef Osama, Noha Abdel Rahman, Ramy Abdeldayem","doi":"10.21608/eos.2023.207115.1069","DOIUrl":"https://doi.org/10.21608/eos.2023.207115.1069","url":null,"abstract":"Background: The treatment of Class II malocclusions has always been a subject of great interest for orthodontists. The use of distalization mechanics to correct Class II malocclusions is a common treatment modality. Many devices have been developed and used to distalize the maxillary molars and show positive clinical results. Aim of the Work: The aim of this study was to evaluate the rate of tooth movement on digital casts caused by distalization of maxillary molars using steel bar distalizer in the treatment of class II malocclusion. Materials and Methods: Twenty patients with age ranging from 15 to 30 years were recruited from the out-patient clinic of the Orthodontic Department of the Faculty of Dentistry Ain-Shams University. All patients required maxillary molar distalization as part of their orthodontic treatment plan. Impression for appliance fabrication was done then mini-screws were inserted after appliance cementation. The rate of maxillary first molar movement was assessed through the analysis of successive digital model scans taken every 4 weeks. Results: The changes accompanying the maxillary first molar distalization were evaluated by analyzing digital models showed the mean rate of tooth movement was 0.3 mm/month. Conclusion: The steel bar distalizer is an efficient and cheaper alternative in maxillary molar distalization.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":"7 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138609782","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}

引用次数: 0

Correlation of symphysis morphology with different vertical growth patterns 干骺端形态与不同垂直生长模式的相关性

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.207911.1070

Muneeza Gul, Nazir Ahmad, Imran Tajik, Kosar Bahadur, Sasir Shahabi

{"title":"Correlation of symphysis morphology with different vertical growth patterns","authors":"Muneeza Gul, Nazir Ahmad, Imran Tajik, Kosar Bahadur, Sasir Shahabi","doi":"10.21608/eos.2023.207911.1070","DOIUrl":"https://doi.org/10.21608/eos.2023.207911.1070","url":null,"abstract":"Introduction: Facial growth relative to the cranial base line proceeds along a vector composed of variable amount of horizontal forward growth and vertical downward growth. Growth of the mandible plays an important role in facial growth and development. Objective: The purpose of this study was to determine whether there was any relationship between symphysis shape and vertical skeletal growth patterns, categorized into normodivergent, hypodivergent and hyperdivergent groups using various parameters. Materials and Methods: Pretreatment lateral cephalometric radiographs of 330 individuals ranging in age from 18 to 30 years. The symphysis height, symphysis depth, ratio (height of symphysis/depth of symphysis) and angulation of symphysis were analyzed statistically. Results: It was found that the mandible with the hyperdivergent growth pattern was associated with an increased symphysis height, reduced symphysis depth and small symphysis angle and vice versa in the hypodivergent group. Conclusions: The results for the symphysis height, symphysis depth and symphysis angle were statistically significant whereas the ratio of symphysis height to symphysis depth did not show statistically significant results.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138617202","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}

引用次数: 0

Comparison between different educational methods in orthodontic teaching for undergraduate dental students (A cross sectional study) 牙科本科生正畸教学中不同教育方法的比较（横断面研究）

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.223977.1082

Shereen El Mahlawy, May El mofty

{"title":"Comparison between different educational methods in orthodontic teaching for undergraduate dental students (A cross sectional study)","authors":"Shereen El Mahlawy, May El mofty","doi":"10.21608/eos.2023.223977.1082","DOIUrl":"https://doi.org/10.21608/eos.2023.223977.1082","url":null,"abstract":"Background: Nowadays, E learning can be used along with traditional learning methods as a result of internet networks infrastructure development and available access to the most of students. This study aimed to compare students’ responses and satisfaction regarding online, blended and traditional learning methods in relation to orthodontic knowledge and skills acquired for undergraduate students. Materials and Methods: An online survey was done among 262 students studying in Ahram Canadian University. The students were divided into 3 groups, where Group I represented the traditional method of teaching, Group II represented the online method and Group III, the blended method of teaching. A questionnaire including 14 questions was filled with students’ opinions regarding different teaching methods. Then the data were collected and analyzed. Simple descriptive statistics was used to compare questionnaire responses for the whole sample and T-independent and Mann-Whitney tests to compare the 3 groups. Results: The results showed that there was no significant difference between the 3 groups in students’ opinions regarding different teaching methods. The traditional teaching method group was satisfied with the way traditional lectures were conducted before the covid-19 pandemic. In the online teaching method group, most of the students agreed that lecture recordings during online classes were beneficial for self-study. While, in the blended teaching method group, most of the students agreed that regarding the lectures, they preferred a combination of traditional and online learning. Conclusion: The blended learning was the most preferable method for teaching orthodontics for undergraduate dental students.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":"35 S148","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622777","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}

引用次数: 0

Orthodontic treatment-related caregiver burden and coping strategies: a cross-sectional study 与正畸治疗相关的护理负担和应对策略：一项横断面研究

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.199462.1066

Adeyemi Fadeju, O. Ogundipe, Samuel Olowowokere

引用次数: 0