Egyptian Orthodontic Journal最新文献_第3页

Indirect Bonding Accuracy By 3D Printed Transfer Tray 通过3D打印传输托盘间接粘接精度

Egyptian Orthodontic Journal Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.146844.1052

A. Mahran, W. Refai, A. Abdelhameed, Ahmed Abdelemam, Ahmed Hashem

{"title":"Indirect Bonding Accuracy By 3D Printed Transfer Tray","authors":"A. Mahran, W. Refai, A. Abdelhameed, Ahmed Abdelemam, Ahmed Hashem","doi":"10.21608/eos.2022.146844.1052","DOIUrl":"https://doi.org/10.21608/eos.2022.146844.1052","url":null,"abstract":": Introduction: Indirect bonding is a procedure that involves transferring orthodontic attachments from dental casts (working models) and bonding them to the teeth with the help of a transfer tray. Indirect bonding is a preferred approach for many orthodontists since it takes less time than direct bonding. The merging of computer-aided design and computer-aided manufacturing (CAD/CAM) allowed for the digital formation of transfer trays. This study aimed to determine the accuracy of CAD/CAM indirect three-dimensional printed bonding trays. Materials and methods: 140 teeth were planned to be bonded by 3D printed transfer tray. The intraoral scanner was first used to produce a stereolithographic (STL) file for virtual brackets location, and then another scan was taken after the brackets were bonded. Software was used to measure position deviation of bracket placements by superimposing virtual STL files and post bonding STL files. Results: To see if the mean transfer error was statistically within the selected accuracy limits of 0.5 mm for linear measurements, a one-sample t-test was used. For linear measurements, P-values of less than 0.05 indicated differences within the accepted deviation limits. Conclusions: CAD/CAM transfer trays for indirect bonding have high transfer accuracy in all kinds of teeth.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123864071","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

CBCT Evaluation Of Modified Mini-implant Aided Trans-palatal Arch On Maxillary Molar Distalization 改良微型种植体辅助跨腭弓对上颌磨牙离体的CBCT评价

Egyptian Orthodontic Journal Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.155833.1054

I. Ghorab, H. Saifeldin, I. Abbas

{"title":"CBCT Evaluation Of Modified Mini-implant Aided Trans-palatal Arch On Maxillary Molar Distalization","authors":"I. Ghorab, H. Saifeldin, I. Abbas","doi":"10.21608/eos.2022.155833.1054","DOIUrl":"https://doi.org/10.21608/eos.2022.155833.1054","url":null,"abstract":": Objectives: the aim of this study was to evaluate the effect of modified mini-implant aided trans-palatal arch on maxillary molar distalization using CBCT. Methods: 10 adult patients with Angle class II molar relation were submitted to maxillary first molar distalization using modified mini-implant aided trans palatal arch (MIA-TPA), after completing the essential orthodontic records, CBCT was taken before distalization at T0, then trans-palatal arch (TPA) of 1mm diameter passing anterior on the palate was cemented and 2 miniscrews were inserted between the maxillary 2nd premolar and 1st molar on the palatal side. NiTi closed coil spring was applied between TPA anterior and mini- implant to produce distalization force of 250g/side parallel to the occlusal plane. Dental changes of maxillary molars were compared using cone beam computed tomography CBCT after achieving class I molar relation at T1. Results: According to the dental linear and angular measurements, the maxillary first molar showed statistically significant bodily distal movement without significant distal tipping. Vertically, the maxillary first molar showed statistically significant intrusion. Conclusion: MIA-TPA","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134548961","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

To Evaluate Success And Failure Rate Of Temporary Anchorage Devices (TADS) In Various Attachments Sites In Maxilla Abstract:- 上颌骨不同附着部位临时支抗装置(TADS)的成功率和失败率评价

Egyptian Orthodontic Journal Pub Date : 2022-06-01 DOI: 10.21608/eos.2021.90458.1029

N. Mote, Jyoti Rajbhar, N. Toshniwal, R. Rathod

{"title":"To Evaluate Success And Failure Rate Of Temporary Anchorage Devices (TADS) In Various Attachments Sites In Maxilla Abstract:-","authors":"N. Mote, Jyoti Rajbhar, N. Toshniwal, R. Rathod","doi":"10.21608/eos.2021.90458.1029","DOIUrl":"https://doi.org/10.21608/eos.2021.90458.1029","url":null,"abstract":"Introduction:-The concept of anchorage is very important in orthodontic treatment outcome and best anchorage is provided by miniscrews.This study focuses on the evaluation of success and failure rate of mini screws used for absolute anchorage. The method of placement and technique is also stated and bone density level, position of roots, anatomic landmarks such as maxillary sinus is also explained. The histologic pattern of gingiva is an important consideration in placing miniscrews,when placed in attached gingiva. Material & Method:-The span of study is 24 months with sample size of 195 mini screws placed between age group of 20-45 years in different sites of maxilla such as in the Attached and Unattached Gingiva on the Buccal and Anterior region of maxillary alveolar process, median and Paramedian region of palate with recall period of 13 month, 36 month and more than 6 months was followed. Result:-The overall success rate of mini-screw rate in Attached and Unattached gingiva was highest 90% and 70% between 1st Premolar and 2nd Premolar region region with failure rate of 0 % after 1 year follow up. Whereas in palatal region the paramedian region showed good success rate of mini screw of 80% in between first and second premolar region which is better than midpalatal region. Conclusion:-Thus this study overall concludes that miniscrews are an efficient way of providing anchorage with good success rate when placed in attached gingiva.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122815809","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: 1

Comparison between Bolton analysis and Chu’s simplified method for calculating anterior tooth size discrepancy Bolton分析法与Chu简化法计算前牙尺寸差异的比较

Egyptian Orthodontic Journal Pub Date : 2022-06-01 DOI: 10.21608/eos.2021.62217.1014

Syeda Shamal, S. Shaheed, J. Khan

引用次数: 0

Detection Of Bone Deposition On The Surface Of Immediately Removed Or Left Mini-Screw After Canine Retraction (SEM Study) 即刻取下或留下的微型螺钉犬齿内收后表面骨沉积的检测(扫描电镜研究)

Egyptian Orthodontic Journal Pub Date : 2022-03-09 DOI: 10.21608/eos.2021.107405.1037

M. El-Mezayen, Kareem Gaber, W. Refai

引用次数: 1

Effect of Artiﬁcial Intelligence versus guided Landmarks identification on the accuracy of the Lateral Cephalometric Analysis 人工智能与指标性地标识别对侧位头颅测量分析准确性的影响

Egyptian Orthodontic Journal Pub Date : 2022-03-09 DOI: 10.21608/eos.2021.104517.1032

Mohamed Hemeda, W. Refai, Mohamed Elshal, M. Mohammed, A. Abdelhameed

{"title":"Effect of Artiﬁcial Intelligence versus guided Landmarks identification on the accuracy of the Lateral Cephalometric Analysis","authors":"Mohamed Hemeda, W. Refai, Mohamed Elshal, M. Mohammed, A. Abdelhameed","doi":"10.21608/eos.2021.104517.1032","DOIUrl":"https://doi.org/10.21608/eos.2021.104517.1032","url":null,"abstract":"Objective: This study aimed to compare the effect of Artificial Intelligence versus guided Landmarks identification on the accuracy of the Lateral Cephalometric Analysis. Methodology: Three orthodontic specialists identified 17 radiographic landmarks manually for 22 different types of angular and linear measurements of 50 lateral cephalometric radiographs then tracing and analysis were done by Artificial Intelligence based software (Webceph) and Automated cephalometric analysis software (Romexis software). The measurements of the two softwares compared to humans’ gold standard (Mean values of the three examiners). Results: comparison between humans’ gold standard and (Wepceph) the AI’s predictions showed no proportional bias in 12 parameters, The mean differences range from 0.2° to 2.9° for angular measurements except Gonial angle 4.55°, Upper 1 to NA angle 3.78° and IMPA 3.72° and from 0.25 to 1.67 mm for linear measurements. Comparison betwe en humans’ gold standard and Automated cephalometric analysis software (Romexis software) showed proportional bias in 19 parameters, The mean differences range from 0.16° to 12.67° for angular measurments and from 1.01 to 13.38 mm for linear measurements. Conclusions: AI based software is able to identify landmarks of cephalometric X-rays at almost the same quality level as experienced human examiners (current gold standard).comparison between the two types of softwares showed that the accuracy of AI based (Webceph) software is better than the automated cephalometric analysis (Romexis) software.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130712601","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

Osteopontin and Periostin levels in peri-miniscrew implant crevicular fluid during Class III treatment III类治疗期间微型种植体周围沟液中的骨桥蛋白和骨膜蛋白水平

Egyptian Orthodontic Journal Pub Date : 2022-03-09 DOI: 10.21608/eos.2021.99723.1030

Sara Elkabbany, Nora Abdelgawad, O. Shaker

{"title":"Osteopontin and Periostin levels in peri-miniscrew implant crevicular fluid during Class III treatment","authors":"Sara Elkabbany, Nora Abdelgawad, O. Shaker","doi":"10.21608/eos.2021.99723.1030","DOIUrl":"https://doi.org/10.21608/eos.2021.99723.1030","url":null,"abstract":"Introduction: Anchorage control is important for the success of orthodontic treatment. The stability of miniscrew implants (MIs) is determined by the clinical, biomechanical and biochemical assessments. Purpose: The aim of this study was to evaluate the levels of Osteopontin(OPN) and Periostin (PSN)in peri-miniscrew implant crevicular fluid (PMICF) at different time intervals. Subjects and methods: Eight skeletal Class III patients with maxillary deficiency were selected. Sixteen MIs (Hubit co, Korea) of 1.6 mm diameter and10 mm length were placed bilaterally between the maxillary second premolars and first molars. Additional sixteen MIs of 1.4 mm diameter and 8 mm length were inserted between mandibular canines and first premolars. A fixed posterior bite plate was used to facilitate bite jumping. 250-300g force per side was immediately delivered by intermaxillary closed coil springs (Ortho Technology, TAD coil spring, USA). PMICF samples were obtained before loading(T1); on day one(T2), two(T3), seven(T4) and on day 30 (T5) after force application. Enzyme-linked immunosorbent assay (ELISA) kits were used to determine OPN and PSN levels. Results: The percentage change in levels of OPN and PSN broadly showed a decrease upon loading of MIs. However, at the end of observation period, there was no statistically significant difference between T1and T5. Conclusions: The OPN and PSN levels varied around MIs as a result of force application and may be used as biomarkers for assessing implant stability throughout loading periods. Immediate loading of MIs with intermaxillary closed coil springs for treatment of skeletal Class III patient did not impair implant stability.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129368448","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 two low-level laser irradiation protocols on molar anchorage loss (A randomized controlled clinical trial) 两种低强度激光照射对磨牙支抗丢失的影响(一项随机对照临床试验)

Egyptian Orthodontic Journal Pub Date : 2022-03-09 DOI: 10.21608/eos.2021.106120.1036

F. Eid, Walid El-Kenany, Mohamed I. Mowafy, Ahmed R. Elkalza, Myriam Guindi

{"title":"The effect of two low-level laser irradiation protocols on molar anchorage loss (A randomized controlled clinical trial)","authors":"F. Eid, Walid El-Kenany, Mohamed I. Mowafy, Ahmed R. Elkalza, Myriam Guindi","doi":"10.21608/eos.2021.106120.1036","DOIUrl":"https://doi.org/10.21608/eos.2021.106120.1036","url":null,"abstract":"Objective: Low-level laser therapy (LLLT) has been found to accelerate the rate of tooth movement, which in turn may aid in preserving posterior anchorage. However, one of the drawbacks of LLLT, is the high frequency of patient recall. The aim of the study was to evaluate and compare the amount of molar anchorage loss accompanying canine retraction, by employing two LLLT protocols, involving a high and a low application frequency. Materials and Methods: Sixteen patients were enrolled, in which the therapeutic extraction of maxillary 1st premolars was required for orthodontic treatment, with subsequent canine retraction. Patients were equally and randomly divided into 2 groups. In Group A, LLLT was randomly administered to one side of the maxillary arch on days 0, 3, 7, 14, and then every 2 weeks, while in Group B, one side of the maxillary arch was randomly selected for LLLT application every 3 weeks. The administered LLLT was a Diode laser with a 980 nm wavelength. Canine retraction was carried out using closed-coil springs, with 150 grams of force, and the amount of mesial molar movement was checked every 3 weeks, over the 12-week study period. Results: Equivalent amounts of mesial molar movements have been displayed with and without LLLT application, in both study groups. Also, no significant differences have been documented between the laser sides in groups A and B. Conclusion: Molar anchorage has not been augmented by LLLT, whether applied with a high frequency, or with less frequent applications coinciding with the follow-up visits.","PeriodicalId":305086,"journal":{"name":"Egyptian Orthodontic Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133481841","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

EVALUATION OF DIFFERENT TECHNIQUES FOR DEBONDING OF CERAMIC BRACKETS (AN IN VITRO STUDY) 不同陶瓷托槽脱粘技术的评价(一项体外研究)

Egyptian Orthodontic Journal Pub Date : 2022-03-09 DOI: 10.21608/eos.2021.105244.1033

A. Khalil, Nazla Tamish, Ahmed R. Elkalza

引用次数: 0

CBCT assessment of mandibular incisor orthodontically induced root resorption during accelerated tooth movement via low level Laser therapy 低水平激光治疗下门牙正畸诱导牙根吸收的CBCT评价

Egyptian Orthodontic Journal Pub Date : 2021-12-01 DOI: 10.21608/eos.2021.103251.1031

Yasmine Abdelghaffar, Khaled Aboulazm, I. Negm

引用次数: 0