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Egyptian Orthodontic Journal最新文献

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Evaluation Of Diode Laseer-Aided Debonding Of Two Different Types Of Ceramic Brakets (An In Vitro Study) 两种不同类型陶瓷支架二极管激光辅助脱粘的评价(体外研究)
Pub Date : 2023-06-01 DOI: 10.21608/eos.2022.175753.1060
Y. Omar, E. Marzouk, Sherief H. Abdel-haffiez
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引用次数: 0
Evaluating the efficiency of Er,Cr:YSGG laser in removing adhesive remnants from tooth structure after orthodontic brackets debonding 评价Er,Cr:YSGG激光去除正畸托槽脱粘后牙结构粘接剂残留的效果
Pub Date : 2023-02-02 DOI: 10.21608/eos.2023.187196.1064
Rokaya Mady, Youssef Sedky, R. Franzen
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引用次数: 0
Three Dimenaional Evaluation Of The Effect Of Discision On Canine Retraction 裁断对犬后收效果的三维评价
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.144792.1049
Mohamed Abd elaziz, W. Refai, Kareem M. Mohamed
The discision technique was developed as a minimally invasive alternative method to piezocision technique, and the authors suggest that this new method yields good outcomes in achieving rapid tooth movement. The efficacy of this newly developed technique should be proved by performing controlled clinical trials comparing this technique with powerchain retraction method method 1 .
该技术是作为一种微创替代压切技术而发展起来的,作者认为这种新方法在实现牙齿快速移动方面效果良好。这种新技术的有效性需要通过对照临床试验来证明,并将其与动力链回缩法进行比较。
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引用次数: 0
Factors That Influence Self-perception Of Smile Attractiveness Among Adolescents 影响青少年微笑吸引力自我知觉的因素
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.122079.1044
I. Akpasa, T. Yemitan, B. Ogunbanjo, A. Oyapero
Objective: This study explored the variables that determine self-perception of smile attractiveness in an adolescent sample population. Methods: An analytical cross-sectional study conducted among 398 adolescents (184 males and 214 females) patients at a dental outpatient clinic in Lagos State, Nigeria between March and December 2019. The subjects were clinically assessed using the Dental Aesthetic Index. Photographs of their frontal posed smiles and intraoral frontal view with teeth in centric occlusion were taken for rating on a visual analog scale (VAS) for self-perception of smile attractiveness and dental aesthetics attractiveness, and objective smile analysis. Data were analyzed with ANOVA and Tukey’s post-hoc tests to compare variables among groups based on their self-perceived smile attractiveness. Regression analysis was done with smile attractiveness as a dependent variable to determine predictors of smile attractiveness. Results: Participants’ mean age was 14.17 years (SD + 2.74). Respondents who perceived their smile as unattractive significantly had more severe malocclusion (p = 0.034) and significantly perceived their dental aesthetics as unattractive (p < 0.01) compared to those who perceived their smile to be very attractive. Regression model showed a significant effect of self-perceived dental aesthetics attractiveness and buccal corridor ratio (p < 0.05) on smile attractiveness. The strongest predictor of self-perceived smile attractiveness was self-perceived dental aesthetics attractiveness. Conclusion: Self-perception of dental aesthetics attractiveness is a strong predictor of smile attractiveness and should therefore be assessed during orthodontic pre-treatment assessment since this can influence patients’ satisfaction with treatment results.
目的:本研究探讨了在青少年样本人群中决定微笑吸引力自我知觉的变量。方法:对2019年3月至12月在尼日利亚拉各斯州牙科门诊就诊的398名青少年(184名男性,214名女性)进行了一项分析性横断面研究。采用口腔美观指数对受试者进行临床评估。采用视觉模拟量表(visual analogue scale, VAS)评定患者对微笑吸引力和牙齿美学吸引力的自我知觉,并进行客观微笑分析。数据通过方差分析和Tukey的事后检验进行分析,以根据他们自我感知的微笑吸引力来比较各组之间的变量。以微笑吸引力为因变量进行回归分析,确定微笑吸引力的预测因子。结果:参与者平均年龄为14.17岁(SD + 2.74)。与那些认为自己的微笑非常吸引人的人相比,认为自己的微笑不吸引人的人明显有更严重的错颌(p = 0.034),并且明显认为自己的牙齿美观不吸引人(p < 0.01)。回归模型显示,自我感知牙齿美学吸引力和颊道比对微笑吸引力有显著影响(p < 0.05)。自我感知的微笑吸引力的最强预测因子是自我感知的牙齿美学吸引力。结论:口腔美学吸引力的自我感知是微笑吸引力的重要预测因子,影响患者对治疗结果的满意度,因此应在正畸治疗前评估中进行评估。
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引用次数: 0
Evaluation Of Bone Thickness Of The Mandibular Buccal Shelf In Different Age Groups For Mini-screw Insertion 不同年龄组下颌颊架骨厚度对微型螺钉置入的评价
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.119537.1043
Osama Ezz El Regal, Abbadi El-Kady, W. Refaat
Introduction: The mandibular buccal shelf has been presented lately, as an available extra-alveolar mini-screw insertion site, which is located bilaterally in the posterior part of the mandibular body, buccal to the roots of the first and second molars and anterior to the oblique line of the mandibular ramus specially at the buccal bone lateral to the distal root of the second molar, with screw insertion located 4 mm buccal to the CEJ. The objective: was to evaluate the bone thickness of the mandibular buccal shelf in different age groups for mini- screw insertion by using CBCT digital radiographs. Methods: 90 CBCT digital records were selected randomly and were grouped according to age. Each group contains 30 CBCT digital records as follows: Group A: with age from 14 to 18 years old. Group B: with age from 19 to 23 years old. Group C: with age from 24 to 28 years old. then quantitative bone characteristics of the mandibular buccal shelf of bone were evaluated. Results: showed that no statistically significant differences between all age groups at all the sites. Conclusion: Mandibular buccal shelf offers optimal sites for the insertion of mini-screw.
简介:下颌颊架最近被提出,作为一种可用的牙槽外微型螺钉插入位置,它位于双侧下颌体的后部,与第一和第二磨牙根颊部和下颌分支斜线前方,特别是在第二磨牙远根外侧的颊骨处,螺钉插入位置位于CEJ颊部4mm处。目的:利用CBCT数字x线片评估不同年龄组下颌颊架的骨厚度,以适应微型螺钉的置入。方法:随机选取90例CBCT数字病历,按年龄分组。每组包含30条CBCT数字记录,具体如下:A组:年龄14 - 18岁。B组:年龄19 - 23岁。C组:年龄24 - 28岁。然后定量评价下颌颊架骨的骨特性。结果:各部位各年龄组间差异无统计学意义。结论:下颌颊架是微型螺钉置入的最佳位置。
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引用次数: 0
Reliability Of Lateral Cephalogram Versus Study Cast In Assessment Of Anchorage Loss With Corticotomy 侧位头颅造影与研究模型评估皮质切开术后锚固丧失的可靠性
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.145813.1050
Shereen El Mahlawy
: Objectives: The aim of the study was to compare the effectiveness of lateral cephalogram and study cast measurements in assessment of anteroposterior molar movement with corticotomy assisted en masse retraction. Materials and Methods: This retrospective study was done on pre and post treatment study casts and lateral cephalograms of previously treated twenty female patients, age range (18-25 years) with Class II division 1 malocclusion where orthodontic treatment entailed extraction of upper first premolars. Patients were orthodontically treated with preadjusted edgewise appliances. Anchorage was reinforced by transpalatal arch with engagement of second molar. En masse retraction of the maxillary anterior teeth using sliding mechanics. Flapless piezoelectric corticotomy was done. The anchorage loss was assessed through pterygoid vertical method on digitally traced lateral cephalograms. Maxillary casts were digitally scanned. The distance between medial end of third palatal rugae and central fossa of anchor molar was measured to evaluate the anteroposterior molar movement. Statistical Analysis was performed to compare the mean values of anchorage loss measured on lateral cephalograms and study models. Results: Anchorage loss measurements were statistically significant on both lateral cephalogram and study cast with corticotomy assisted en masse retraction. There was no significant difference between the mean horizontal movement of maxillary first molar measured on the lateral cephalogram and that was seen on the study cast. Conclusion: Study cast was as reliable as lateral cephalogram in assessment of anchorage loss. Either of the methods could be used to measure anteroposterior tooth movement.
目的:本研究的目的是比较侧位头颅造影和研究铸型测量在皮质切开术辅助整体后缩时评估前后磨牙运动的有效性。材料和方法:本回顾性研究对20例年龄在18-25岁的II类1类错颌患者进行了治疗前后的研究模型和侧位头片,这些患者的正畸治疗需要拔除上颌第一前磨牙。患者使用预调整的边缘矫治器进行正畸治疗。通过第二磨牙接合的经腭弓加强锚固。上颌前牙整体内收的滑动力学。行无瓣压电皮质切开术。通过数字追踪侧位脑电图上的翼状垂直法评估锚固损失。上颌铸型进行数字扫描。测量第三腭襞中端与锚牙中央窝之间的距离,评价前后磨牙的运动。对侧位头颅造影和研究模型测量的锚固损失平均值进行统计分析。结果:侧位脑电图和皮质切开术辅助下的整体回缩研究模型的锚固损失测量均有统计学意义。上颌第一磨牙的平均水平移动在侧位脑电图上与研究模型上没有显著差异。结论:研究模型在评估支具丢失方面与侧位头颅造影一样可靠。两种方法均可用于测量前后牙的运动。
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引用次数: 0
Effectiveness Of Invisalign® in Upper Incisors’ Movements: A Systematic Review Invisalign®在上门牙运动中的有效性:一项系统综述
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.129654.1045
Edoardo Ricci, Jose Eduardo Tapia Vidal, Cecilia Eugenia Nieto Romero
Objectives: The aim of this systematic review is to review all the evidence available about the efficacy of the Invisalign® system in upper incisors’ movements in the last decade, since 2010. Materials and Methods: A search strategy was performed in a number of databases to include as many studies as possible. MEDLINE, Scopus, Pubmed and the Cochrane Oral Health databases were searched. 10 studies were included in the systematic review. Results: Incisor rotation and extrusion seemed to be the most predictable movements (all results had a predictability score of more than 50%), whilst torque and translation seemed to be the most difficult to be performed (most results were under 50%). Intrusion movements seemed also to be overcorrected (142.4%), resulting in possible apex resorption if not calibrated correctly. Conclusions: Single isolated dental movements seem to be predictable with the Invisalign® system, but major complex movements seem to be more unpredictable. The most predictable types of movements seem to be incisor rotation and extrusion, whilst the least predictable seem to be incisor torque and translation. Further studies are needed to examine further the predictability of the Invisalign® system considering more variables influencing the results of the studies.
目的:本系统综述的目的是回顾自2010年以来近十年来有关Invisalign®系统在上切牙运动方面的有效性的所有可用证据。材料和方法:在许多数据库中执行搜索策略,以包括尽可能多的研究。检索MEDLINE、Scopus、Pubmed和Cochrane口腔健康数据库。系统评价纳入了10项研究。结果:切牙旋转和挤压似乎是最可预测的运动(所有结果的可预测性评分超过50%),而扭矩和平移似乎是最难执行的(大多数结果低于50%)。入侵运动似乎也校正过度(142.4%),如果校准不正确,可能导致顶点吸收。结论:使用Invisalign®系统,单个孤立的牙齿运动似乎是可预测的,但主要的复杂运动似乎更不可预测。最可预测的运动类型似乎是切牙旋转和挤压,而最不可预测的似乎是切牙扭矩和平移。考虑到影响研究结果的更多变量,需要进一步的研究来进一步检查Invisalign®系统的可预测性。
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引用次数: 0
Association Of Palatally Displaced Canines With Sella Turcica Bridging And Ponticulus Posticus In Orthodontic Patients. 正畸患者腭移位犬与蝶鞍桥和后桥的关系。
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.105535.1053
Kosar Bahadur, Nazir Ahmad, Imran Tajik, A. A. Khan, Nadia Sharafat
: Objective: To evaluate if there is an association between palatally displaced canines and sella turcica bridging, ponticulus posticus development. Materials and methods: There was a total of 70 patients in the control group with normally erupted canines and 35 patients in the cases group with palatally displaced canines. Pre-treatment records (Lateral Cephalogram and CBCT) of all patients were used to assess sella turcica bridging and palatally displaced canines. Independent sample t tests were used to compare sella dimensions between patients and controls, whereas chi-square test was used to compare the association between sella bridging and palatally displaced canines. Results: The prevalence of Type I bridging was 25.7% in the cases group, compared to 54.3% in the control group. The control group contained 32 subjects (45.7%) with sella turcica bridging (types II and III according to Leonardi et al), while the cases group had 26 subjects (74.3%) with this anomaly (types II and III combined). In participants with canine impaction, the frequency of sella bridging was substantially higher than in controls (P=0.006). In PDC patients, the sagittal interclinoidal distance was observed to be significantly reduced (P=0.002). Ponticulus posticus was seen in 22% of the cases group and 12% of the controls group. (chi-square P=0.006) Conclusions: Palatally displaced canine patients showed a higher prevalence of sella turcica bridging. The length of sella is reduced in these patients. The development of ponticulus posticus is also associated with the occurrence
目的:评价腭移位与蝶鞍桥、后桥发育之间是否存在关联。材料与方法:正常出牙组70例,上颌移位组35例。所有患者的治疗前记录(侧位脑电图和CBCT)用于评估蝶鞍桥和腭移位犬。独立样本t检验用于比较患者和对照组之间的蝶鞍尺寸,而卡方检验用于比较蝶鞍桥和腭移位犬之间的关系。结果:病例组I型桥接发生率为25.7%,对照组为54.3%。对照组有32例(45.7%)患者有蝶鞍桥接(Leonardi等人的II型和III型),而病例组有26例(74.3%)患者有这种异常(II型和III型合并)。在犬牙嵌塞的参与者中,蝶鞍桥接的频率明显高于对照组(P=0.006)。在PDC患者中,矢状面斜间距离明显缩短(P=0.002)。病例组和对照组分别有22%和12%的病例出现后ponticus。结论:犬腭移位患者有较高的鞍桥发生率。这些患者的蝶鞍长度减少。后丛的发育也与此病的发生有关
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引用次数: 0
Evaluation Of Systemic Omega-3 PUFAs On Orthodontic Tooth Movement In A Rabbit Model: Randomized Clinical Trial 评价全身性Omega-3 PUFAs对兔正畸牙齿运动的影响:随机临床试验
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.172634.1056
Asser Gad, Samia Soliman
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引用次数: 0
Dependability Of A Digital Indirect Bonding Approach Using E-models And Two Transfer Trays 使用电子模型和两个传输托盘的数字间接连接方法的可靠性
Pub Date : 2022-12-01 DOI: 10.21608/eos.2022.146611.1051
Tarek Eissa, W. Rifai, M. El-Shal, M. Ibrahim
Introduction: Orthodontics have been affected by digital technology, including diagnostic tools, treatment planning, appliance production, and 3D printing. To enable bracket arrangement more precisely and effectively, various CAD applications were available. Numerous research that examined the effectiveness and precision of the digital indirect bonding approach discovered that it is, overall, an effective solution. However, there was little investigation on the literatures regarding the external reliability of digital indirect bonding systems. Aim of the study: to assess digitally the amount of variation in bracket locations that occurred during their transfer using an indirect bonding tray within the patient's mouth, as well as the exterior accuracy of the measurements.
正畸学已经受到数字技术的影响,包括诊断工具、治疗计划、器具生产和3D打印。为了使支架排列更精确和有效,有各种CAD应用程序可用。许多研究检查了数字间接连接方法的有效性和精度,发现它总体上是一种有效的解决方案。然而,关于数字间接键合系统外部可靠性的研究文献很少。该研究的目的是:使用患者口腔内的间接粘接托盘,以数字方式评估在支架转移过程中发生的支架位置变化量,以及测量的外部准确性。
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引用次数: 0
期刊
Egyptian Orthodontic Journal
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