World journal of orthodontics最新文献_第5页

Prof Athanasiou on WFO past accomplishments and expectations for the future. Athanasiou教授谈世界气象组织过去的成就和对未来的期望。

World journal of orthodontics Pub Date : 2010-01-01

Athanasios E Athanasiou

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Simplified abutment tooth extrusion using a mini-implant. 使用微型种植体简化基牙挤压。

World journal of orthodontics Pub Date : 2010-01-01

Yoon-Ah Kook, Mohamed Bayome, Seong-Hun Kim, Dong-Hoon Lee, Yoon-Ji Kim, Seok-Gyu Kim

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Correction of horizontal and vertical discrepancies with a new interactive self-ligating bracket system: the Quick system. 纠正水平和垂直差异与一个新的交互式自结扎支架系统:快速系统。

World journal of orthodontics Pub Date : 2010-01-01

Vittorio Cacciafesta, M Francesca Sfondrini

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The effects of myofunctional appliance treatment on the perioral and masticatory muscles in Class II, Division 1 patients. 肌功能矫治器对II类1科患者口周肌和咀嚼肌的影响。

World journal of orthodontics Pub Date : 2010-01-01

Ahmet Yagci, Tancan Uysal, Sadik Kara, Sukru Okkesim

{"title":"The effects of myofunctional appliance treatment on the perioral and masticatory muscles in Class II, Division 1 patients.","authors":"Ahmet Yagci, Tancan Uysal, Sadik Kara, Sukru Okkesim","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To evaluate the effect of a myofunctional appliance--the preorthodontic trainer (POT)--on the perioral and masticatory muscles by electromyography (EMG) in individuals with an Angle Class II, Division 1 malocclusion.Methods: Twenty children were treated with a POT appliance, which had to be worn every day for 1 hour and overnight. The EMG recordings were made at the beginning and end of POT therapy during maximal clenching, swallowing, and sucking. For statistical evaluation, the Wilcoxon nonparametric test was used at the P<.05 level.Results: During POT treatment, the EMG value for clenching of the anterior temporal muscle decreased significantly (P<.001). Also, for the mentalis muscle, the EMG value during clenching decreased significantly; for the orbicularis oris muscle, this was true for sucking (P<.05) and clenching (P<.01). For the masseter muscle, all EMG values were decreased during treatment but significantly only for clenching.Conclusion: During the 6 months of POT treatment, the perioral and masticatory muscles of Class II, Division 1 patients improved significantly.","PeriodicalId":87213,"journal":{"name":"World journal of orthodontics","volume":"11 2","pages":"117-22"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"29058166","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}

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Factors associated with orthodontic stability: a retrospective study of 209 patients. 正畸稳定性相关因素:209例患者的回顾性研究

World journal of orthodontics Pub Date : 2010-01-01

Nair Galvão Maia, Antonio David Corrêa Normando, Francisco Ajalmar Maia, Maria Angêla Fernandes Ferreira, Maria Socorro Costa Feitosa Alves

{"title":"Factors associated with orthodontic stability: a retrospective study of 209 patients.","authors":"Nair Galvão Maia, Antonio David Corrêa Normando, Francisco Ajalmar Maia, Maria Angêla Fernandes Ferreira, Maria Socorro Costa Feitosa Alves","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To assess the long-term stability of orthodontic treatment and some factors associated to posttreatment changes.Methods: Six hundred twenty-seven dental casts of 209 patients were examined with the PAR Index at pretreatment (T1), end of treatment (T2), and at long-term follow-up (T3, mean 8.5 years posttreatment). Friedman test and multiple regression analysis at P < .05 were used to evaluate changes among the time points and factors associated with stability.Results: After orthodontic treatment, the PAR Index improved by 94.2%. No significant change was observed between T2 and T3 (P>.05). However, when the sample was divided into a well- (PAR Index ≠ 3) and a less well-finished (PAR Index >3) group, it was observed that well-finished patients experienced some deterioration (P<.001), whereas the less well-finished ones showed some improvement (P<.05). Even with the deterioration, the well-finished patients still had a better PAR Index at T3 compared to the less well-finished ones. Regression analysis showed that PAR Index at T1 and T2, age at T1, and length of retainer wear had a slight association with occlusal stability (R(2)=0.27). No significant association was observed between stability and length of treatment, length of follow-up, sex, extraction, or third molar status on the other side.Conclusion: Orthodontic treatment is quite stable. Not so well-finished treatments tend to show some improvement and well-finished ones deteriorate some. Well-finished patients still have better occlusal characteristics. Retention contributes to maintenance of the final orthodontic results.","PeriodicalId":87213,"journal":{"name":"World journal of orthodontics","volume":"11 1","pages":"61-6"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28758258","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 enamel pretreatment on shear bond strength of brackets bonded with resin-modified glass-ionomer cement. 搪瓷预处理对树脂改性玻璃离子水门铁支架抗剪强度的影响。

World journal of orthodontics Pub Date : 2010-01-01

Ricardo Oliveira Chicri, Robson Tetsuo Sasaki, Adriana S Carvalho, Paulo Roberto Aranha Nouer, Ynara B O Lima-Arsati

{"title":"Effect of enamel pretreatment on shear bond strength of brackets bonded with resin-modified glass-ionomer cement.","authors":"Ricardo Oliveira Chicri, Robson Tetsuo Sasaki, Adriana S Carvalho, Paulo Roberto Aranha Nouer, Ynara B O Lima-Arsati","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To evaluate the shear bond strength of brackets bonded with resin-modified glass-ionomer cement (RMGIC) using various methods of enamel conditioning.Methods: Forty-five human premolars were randomly divided into five groups. The roots of these teeth were fixed in acrylic resin cylinders, and brackets were bonded to the teeth's crowns using the following material combinations: RMGIC only; RMGIC and corresponding primer; RMGIC, acid etching, and Scotchbond Multipurpose; RMGIC and two-step self-etching primer; and RMGIC and one-step primer. All specimens were submitted to pH cycling for 14 days before shear bond strength was assessed in a universal test machine.Results: The medians and standard deviations (in MPa) were RMGIC only = 8.34 ± 1.11; RMGIC and corresponding primer = 7.05 ± 2.24; RMGIC, acid etching, and Scotchbond Multipurpose = 7.00 ± 4.79; RMGIC and two-step self-etching primer = 0.54 ± 0.30; and RMGIC and one-step primer = 10.61 ± 4.58. The value for RMGIC and two-step self-etching primer was significantly lower than all other values.Conclusion: It can be concluded that the tested RMGIC is suitable for bonding orthodontic brackets, even when used by itself. Different enamel preparations do not improve its performance. However, they can worsen its bonding capacity as the combination with the two-step primer system clearly shows.","PeriodicalId":87213,"journal":{"name":"World journal of orthodontics","volume":"11 1","pages":"11-5"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28758332","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}

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Divine proportions in attractive and nonattractive faces. 漂亮和不漂亮的脸上的神圣比例。

World journal of orthodontics Pub Date : 2010-01-01

Hans Pancherz, Verena Knapp, Christina Erbe, Anja Melina Heiss

{"title":"Divine proportions in attractive and nonattractive faces.","authors":"Hans Pancherz, Verena Knapp, Christina Erbe, Anja Melina Heiss","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To test Ricketts' 1982 hypothesis that facial beauty is measurable by comparing attractive and nonattractive faces of females and males with respect to the presence of the divine proportions.Methods: The analysis of frontal view facial photos of 90 cover models (50 females, 40 males) from famous fashion magazines and of 34 attractive (29 females, five males) and 34 nonattractive (13 females, 21 males) persons selected from a group of former orthodontic patients was carried out in this study. Based on Ricketts' method, five transverse and seven vertical facial reference distances were measured and compared with the corresponding calculated divine distances expressed in phi-relationships (f=1.618). Furthermore, transverse and vertical facial disproportion indices were created.Results: For both the models and patients, all the reference distances varied largely from respective divine values. The average deviations ranged from 0.3% to 7.8% in the female groups of models and attractive patients with no difference between them. In the male groups of models and attractive patients, the average deviations ranged from 0.2% to 11.2%. When comparing attractive and nonattractive female, as well as male, patients, deviations from the divine values for all variables were larger in the nonattractive sample.Conclusion: Attractive individuals have facial proportions closer to the divine values than nonattractive ones. In accordance with the hypothesis of Ricketts, facial beauty is measurable to some degree.","PeriodicalId":87213,"journal":{"name":"World journal of orthodontics","volume":"11 1","pages":"27-36"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"28758335","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}

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World Village Day provides global exposure to participating WFO affiliate organizations. 世界村庄日向参与的世界农村组织附属组织提供全球曝光机会。

World journal of orthodontics Pub Date : 2010-01-01

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Digital subtraction radiography of panoramic radiographs to evaluate maxillary central incisor root resorption after orthodontic treatment. 正畸治疗后上颌中切牙根吸收的数字减影x线全景片评价。

World journal of orthodontics Pub Date : 2010-01-01

Ioulia Ioannidou-Marathiotou, Moschos A Papadopoulos, Athina Kondylidou-Sidira, Andreas Kokkas, Vassilis Karagiannis

{"title":"Digital subtraction radiography of panoramic radiographs to evaluate maxillary central incisor root resorption after orthodontic treatment.","authors":"Ioulia Ioannidou-Marathiotou, Moschos A Papadopoulos, Athina Kondylidou-Sidira, Andreas Kokkas, Vassilis Karagiannis","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To quantitatively assess the extent of morphologic changes of the apical root area and root length of maxillary central incisors after orthodontic treatment using digital subtraction radiography (DSR) and to investigate possible contributing parameters.Methods: The subtracted images of panoramic radiographs of 21 patients before and after orthodontic treatment were evaluated using I/RAS C and Image J software. The retrieved data were analyzed by means of SPSS statistical software, and the method's error was assessed.Results: There was a small but significant decrease of the root dimensions of the maxillary central incisors at the end of orthodontic treatment. The amount of root resorption was not significantly influenced by sex, age, dentition, malocclusion classification, extraction, overjet, overbite, elastic wear, and number of teeth with resorption as measured by DSR.Conclusion: DSR of pre- and posttreatment panoramic radiographs was able to confirm minor root resorption of the maxillary central incisors after orthodontic treatment.","PeriodicalId":87213,"journal":{"name":"World journal of orthodontics","volume":"11 2","pages":"142-52"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"29058103","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}

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The Hybrid Orthodontic Treatment System (HOTS). 混合正畸治疗系统(HOTS)。

World journal of orthodontics Pub Date : 2010-01-01

Tomio Ikegami, Ricky Wing-Kit Wong, Urban Hägg, Wilson Lee, Kyoko Hibino

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