Egyptian Orthodontic Journal最新文献_第3页

Effectiveness of olive oil local application in decreasing the period of alignment phase in non extraction orthodontic patients. A randomized controlled clinical trial. 橄榄油局部涂抹对缩短非拔牙期正畸患者对齐期的效果。随机对照临床试验。

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.223489.1080

Ahmed Nasef, Asmaa Abdeen

引用次数: 0

Dento-alveolar heights in Egyptian children – A retrospective study 埃及儿童牙槽骨高度--一项回顾性研究

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.225253.1083

Ahmed Fouda

引用次数: 0

The effect of diode laser in preventing enamel demineralization in permanent dentition (an in-vitro study) 二极管激光对防止恒牙釉质脱矿的影响（体外研究）

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.220854.1077

Youssef Sedky, Rene Franzen, Saya Muhammed

{"title":"The effect of diode laser in preventing enamel demineralization in permanent dentition (an in-vitro study)","authors":"Youssef Sedky, Rene Franzen, Saya Muhammed","doi":"10.21608/eos.2023.220854.1077","DOIUrl":"https://doi.org/10.21608/eos.2023.220854.1077","url":null,"abstract":"Objective: The current study tested the ability of a low power (1 watt) diode laser of wavelength (940 nm) to prevent enamel white spot lesions (WSL). Materials and Methods: A total of 30 sound natural human premolars were used and were divided into three groups (10 teeth in each group); Group 1 (control group) without any applications, Group 2 coated with fluoride varnish, and Group 3 treated with a diode laser. Samples were then subjected to a cariogenic solution for 1 week. The labial surfaces for each group were evaluated under a scanning electron microscope (SEM) to evaluate the morphological changes that occurred on all enamel surfaces. Results : The collected data were subjected to One-Way ANOVA followed by Tukey‘s honestly significant difference test, and the results revealed a significant difference in the average mean intensity between the control group (Group 1) and the laser-treated group (Group 3), as well as between the control group and the fluoride-treated group (Group 2), while the least statistically significant result was recorded for Group 1 (control group). Conclusions: According to the SEM images, preventive effect of Fluoride for WSLs on enamel surface remains better than that of the diode laser (940 nm).","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":" 43","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138612631","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 fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study. 通过传统方法制作的固定正畸保持器与通过 CAD/CAM 技术进行虚拟设计和制作的保持器之间的比较：体外研究。

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.221572.1078

Ahmed Othman, Marlene Lorenz, Jassin Arnold, Dragan A Ströbele, C. von See

{"title":"Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.","authors":"Ahmed Othman, Marlene Lorenz, Jassin Arnold, Dragan A Ströbele, C. von See","doi":"10.21608/eos.2023.221572.1078","DOIUrl":"https://doi.org/10.21608/eos.2023.221572.1078","url":null,"abstract":": Introduction: Fixed lingual retainers are commonly used to maintain teeth position after orthodontic treatment. While computer-aided design/computer-aided manufacturing (CAD/CAM) technology has been established in dentistry, its potential use in fixed retainer therapy has not been investigated. The aim of this in vitro study is to compare the mechanical properties of conventionally fixed lingual retainers to those virtually designed and machine-made using digital CAD/CAM technology. Materials and methods : The study involved producing twenty, three-dimensional, identical printed wax models using the Varseo S 3D printer (BEGO, Bremen, Germany) with VarseoWax Model Material (BEGO, Bremen, Germany). Two groups were categorized, differing in the manufacturing process and material of the lingual retainer. The first group used CAD/CAM technology to produce the retainers, while the second group used conventional stainless-steel wires. The retainers were attached to the lingual surface of the lower front teeth and subjected for a mechanical fracture test using the Zwick/Roell Z010 universal testing machine (Zwick/Roell, Ulm, Germany). The dental arch was then loaded labially to evaluate the fracture strength of the lingual retainer. Results : Statistical analysis was performed using Sigma Plot 13.0 (Systat, San Jose, USA), and no significant differences were found between the two groups (p>0.05). Conclusion : This study found no significant difference in mechanical properties between the VarseoSmile Crown plus (BEGO, Bremen, Germany) material and conventional stainless-steel wire for lingual retainers.","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":"138620686","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

Pain perception following placement of conventional and superelastic nickel-titanium initial archwires: A randomized controlled trial 植入传统和超弹性镍钛初始弓丝后的疼痛感：随机对照试验

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.219769.1076

Ahmed I. Abdul-Aziz, Ahmed Abdelaziz

引用次数: 0

Three dimensional evaluation of skeletal effects of two non-compliance appliances in the treatment of growing skeletal class III patients (A randomized controlled clinical trial) 在治疗骨骼发育不良的 III 级患者时，对两种非依从性矫治器的骨骼效果进行三维评估（随机对照临床试验）

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.208855.1072

Bassant Abbas, Tarek Yousry, Wessam Marzouk, Essam Abdullah

引用次数: 0

Effect of miswak varnish on enamel demineralization in orthodontic patients (A randomized controlled study) 米斯瓦克清漆对正畸患者釉质脱矿的影响（随机对照研究）

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.211286.1073

Tarek Yousry, Sherief H. Abdel-haffiez

引用次数: 0

The effect of buccal shelf miniscrew retraction techniques on alveolar bone remodeling of mandibular anterior area 颊架微型螺钉牵引技术对下颌前牙区牙槽骨重塑的影响

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.217100.1075

Mostafa Abdelrhem, Mohamed EL-Shall, Wael Refai

{"title":"The effect of buccal shelf miniscrew retraction techniques on alveolar bone remodeling of mandibular anterior area","authors":"Mostafa Abdelrhem, Mohamed EL-Shall, Wael Refai","doi":"10.21608/eos.2023.217100.1075","DOIUrl":"https://doi.org/10.21608/eos.2023.217100.1075","url":null,"abstract":"Bone remodeling is considered the main process occurred during orthodontic tooth movement especially affecting the alveolus. This process may be a risk factor for the development of gingival recessions, which are 5.8-11.5% common in orthodontically treated patients. The purpose of our study was to assess the changes in the alveolar bone at the level of lower central incisors in adolescent and adult patients after orthodontic tooth movements using CBCT (Cone beam computed tomography) scans. This review's criteria were met by 20 pts out of a total of 47. Retraction of lower incisors was carried out utilizing buccal shelf miniscrews by two en masse retraction techniques to assure full control of tipping movements during orthodontic treatment, the distance from the cementoenamel junction to marginal bone crest was measured before starting space closure and after 6 months. In both types of retraction techniques, the difference in the bone loss was greater on the lingual side of the incisors, especially in Group 1 which utilized a continuous elastomeric chain extended along the main archwire it was comparable to the retraction of lower anteriors within the chain connected to a hook attached to the wire at the level of the centre of resistance of lower anterior teeth between lower lateral and canine although the G1 had a higher retractive effect on lingual bone as compared to G2 (P value= 0.036). The lingual bone movement after retraction showed no statistically significant difference between both groups.","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":" 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138613647","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

Effect of maxillary sinus proximity on upper molar movement during distalization with clear aligner therapy: A retrospective study 上颌窦邻近度对使用透明矫治器进行远端矫治时上磨牙移动的影响：回顾性研究

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.208372.1071

Dina Elfouly, Hanan A. Ismail, Nadia El Harouni, Tarek El- Bialy, A. Ghoneima, Abbas Zaher

{"title":"Effect of maxillary sinus proximity on upper molar movement during distalization with clear aligner therapy: A retrospective study","authors":"Dina Elfouly, Hanan A. Ismail, Nadia El Harouni, Tarek El- Bialy, A. Ghoneima, Abbas Zaher","doi":"10.21608/eos.2023.208372.1071","DOIUrl":"https://doi.org/10.21608/eos.2023.208372.1071","url":null,"abstract":"Background: The objective of this study was to assess the correlation between maxillary sinus proximity to root apices of maxillary molars and changes in molar angulation (tipping), inclination (torque), and rotation during molar distalization using clear aligner therapy (CAT). Methods: This study evaluated 38 cone beam computed tomography (CBCT) images obtained pre (T0) and post (T1) treatment from 19 adult patients who underwent maxillary molar distalization using Invisalign aligners (Align Technology, Inc., San José, CA, USA) with at least 2mm distalization. Only those who wore the aligner for at least 22 hours daily were included in the study. Sinus proximity and the changes in tip, torque and rotation were measured for 61 molars. Spearman coefficient analysis was used to appraise the correlation between sinus proximity and each of the other measured variables. The level of significance was set at p≤ 0.05. The reproducibility of measurements was assessed by the intraclass correlation coefficient (ICC). Results: Spearman coefficient revealed a significant positive correlation between maxillary sinus proximity to root apices and molar inclination (buccal crown torque) (p=0.044). Palatal root proximity to the sinus was the only individual root eliciting a positive correlation with molar inclination (p=0.022). No significant correlation was found between sinus proximity and molar angulation (tipping) nor rotation","PeriodicalId":483969,"journal":{"name":"Egyptian Orthodontic Journal","volume":" 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138616022","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

Novel digitally simplified method for detection of best position for attachments placement on tooth surface during clear aligner designing procedures. 在透明矫治器设计过程中检测牙齿表面附着物最佳位置的数字简化新方法。

Egyptian Orthodontic Journal Pub Date : 2023-12-01 DOI: 10.21608/eos.2023.227146.1085

Ahmed Nasef, Mohamed Zait

引用次数: 0