Orthodontics : the art and practice of dentofacial enhancement最新文献_第10页

Ortho-perio: 45 years in retrospect. 正时:回顾45年。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Robert Boyd

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Evaluation of the power arm in bringing about bodily movement using finite element analysis. 用有限元分析评价动力臂对人体运动的影响。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Tariq Ajaz Ansari, Rohan Mascarenhas, Akhter Husain, Mohammed Salim

{"title":"Evaluation of the power arm in bringing about bodily movement using finite element analysis.","authors":"Tariq Ajaz Ansari, Rohan Mascarenhas, Akhter Husain, Mohammed Salim","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To evaluate the effectiveness of the power arm in bringing about bodily movement and to determine the ideal length and location of the power arm.Methods: A geometric model of the maxillary right canine was constructed and subsequently converted to a finite element model. Material property data were represented, boundary conditions were defined, and force was applied. Different situations were simulated in which a power arm of varying vertical lengths were attached at different locations on the tooth--namely, the incisal, middle, and cervical thirds.Results: The amount of bodily movement is maximum when the force is delivered directly at the cervical third. It decreases at the middle third and is least when attached at incisal third. The varying lengths of the power arm for a particular site of attachment does not bring about any change in the movement.Conclusion: The attachment of the power arm at the cervical third brought about maximum bodily movement, followed by the middle and incisal thirds. Variations in length of the power arm at different sites of attachment did not bring any change in the outcome. Thus, the point of attachment is critical in bringing about bodily movement.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 4","pages":"318-29"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30431220","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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Anterior dental alignment and smile: perception and sensations in a sample of 8- to 10-year-old children and their parents. 前牙排列和微笑:8至10岁儿童及其父母的感知和感觉样本。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Luca Lombardo, Chiara Berveglieri, Maria Paola Guarneri, Giuseppe Siciliani

{"title":"Anterior dental alignment and smile: perception and sensations in a sample of 8- to 10-year-old children and their parents.","authors":"Luca Lombardo, Chiara Berveglieri, Maria Paola Guarneri, Giuseppe Siciliani","doi":"","DOIUrl":"","url":null,"abstract":"Aim: To describe the perception and sensations that dental alignment and smile determine in a sample of 180 children aged between 8 and 10 years, to assess whether there is a general trend in the classification of smiles, and to understand the influence of background attractiveness and sexual traits on the judgment of smile in the sample of children and 150 parents.Methods: We employed visual media showing a smile in four different arrangements (ideal incisal occlusion [N], median diastema [D], incisal crowding [A], and protruding incisors [P), in both a dynamic and static way, with and without background attractiveness.Results: Trends were found among responses to the four classes of videos and photographs: The boy's smile gained a higher score than the girl's smile. In both the boy and girl presentations, there was an important preference to the following sequence of smiles: N, D, A, and P. Furthermore, the girl photographs showed no relevant difference between A and D.Conclusion: This study showed that there are no different perceptions and sensations due to the variation of dental alignment. There is a general trend in the classification of smiles according to dental alignment. Background attractiveness and sexual traits influenced the judgment of smile.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 4","pages":"366-77"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30431224","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

Double impact: intrusion of two mandibular molars using an SAS--a case report. 双重冲击:使用SAS侵入两颗下颌磨牙- 1例报告。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Kartik D Dholakia, Shweta R Bhat

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Changes in the morphology of the labial alveolar bone of protruded permanent maxillary incisors secondary to orthodontic alignment. 正畸对准后上颌恒切牙唇槽骨形态的变化。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Zuber Ahamed Naqvi, Sonahita Agarwal, Tanmay Sharma

{"title":"Changes in the morphology of the labial alveolar bone of protruded permanent maxillary incisors secondary to orthodontic alignment.","authors":"Zuber Ahamed Naqvi, Sonahita Agarwal, Tanmay Sharma","doi":"","DOIUrl":"","url":null,"abstract":"Aim: Treatment of protruded maxillary incisors involves retraction. Lingual positioning of protruded incisors improves the width of the attached gingiva. This study was conducted to document changes in the buccal alveolar bone upon retraction of protruded permanent maxillary central incisors.Methods: Cephalometric radiographs of 13 patients, ages 12 to 18 years, whose orthodontic treatment involved lingual positioning of protruded permanent maxillary central incisors were selected.Results: Comparison of tracings from radiographs taken before and after treatment indicated that the alveolar bone height increased in 76.9% of cases. In addition, a significant positive correlation (r = 0.95) was found between the changes in the distance from the M point to the incisal edge and alveolar bone height.Conclusion: The present study indicated that an increase in the amount of buccal alveolar bone was a result of orthodontic treatment that involved lingual positioning of protruded maxillary permanent central incisors.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 3","pages":"196-201"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30084089","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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Posttreatment compliance with removable maxillary retention in a teenage population: a short-term randomized clinical trial. 治疗后依从性可移动上颌固位在青少年人群:短期随机临床试验。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Marc Bernard Ackerman, Barry Thornton

{"title":"Posttreatment compliance with removable maxillary retention in a teenage population: a short-term randomized clinical trial.","authors":"Marc Bernard Ackerman, Barry Thornton","doi":"","DOIUrl":"","url":null,"abstract":"Removable retainer wear is most related to patient comfort and acceptance. Patient compliance is essential for retention and maintenance of the orthodontic treatment results. Even though patients are educated about the need for prolonged retention after active treatment and asked to sign informed consent regarding the risk of noncompliance (relapse) prior to treatment, most orthodontists would estimate that at least half of their teenage patients do not comply at optimal levels. The aim of the present study was to quantify teenage patient compliance with removable maxillary retention and compare actual usage vs prescribed usage between subjects who knew they were being monitored via an implanted microsensor in the retainer and those subjects who were unaware of any monitoring. The final sample consisted of 9 subjects in the test group (5 males and 4 females) and 10 subjects in the control group (4 males and 6 females). The evidence suggests that individuals who were made aware of the orthodontist's ability to monitor compliance wore the device for a significantly larger number of hours per day than those who were unaware of this fact. Patients reporting full usage of the retainer wore the appliance a mean of 4.3 hours more per day than those reporting less than full usage, holding all other variables constant. Patients who misrepresented their retainer use (reported full usage but wore the device less than 19 hours per day) wore the appliance a mean 12.4 hours less than the more honest patients who participated in the study.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 1","pages":"22-7"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30032929","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

Agenesis of maxillary lateral incisors: a global overview of the clinical problem. 上颌侧切牙发育不全:临床问题的全球概述。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Smaragda Kavadia, Sofia Papadiochou, Ioannis Papadiochos, Lazaros Zafiriadis

{"title":"Agenesis of maxillary lateral incisors: a global overview of the clinical problem.","authors":"Smaragda Kavadia, Sofia Papadiochou, Ioannis Papadiochos, Lazaros Zafiriadis","doi":"","DOIUrl":"","url":null,"abstract":"The agenesis of maxillary lateral incisors is a common developmental anomaly and represents a clinical problem impairing dental esthetics and function from a very young age. Several dental specialties deal with the management of this clinical problem because a multidisciplinary approach can cover the complete dental needs of patients with dental agenesis. There is controversy, however, about whether missing lateral incisor spaces should be orthodontically opened or closed using permanent canines to replace the missing teeth. The article presents a review of the existing literature about the prevalence, etiology, diagnostic evaluation, and treatment strategy of maxillary lateral incisor agenesis. Also, this article aims to present the key determinants leading to selection of space opening or closure and to report professional judgments and layperson perception concerning the available treatment alternatives. The English-language literature associated with this topic was searched via PubMed. The articles retrieved were then reviewed with an attempt to fulfill the aims of this review. Maxillary lateral incisors are one of the most common congenitally missing teeth, and to date, the origin of their agenesis has not been completely identified. Prompt diagnosis and careful evaluation of treatment determinants through a multidisciplinary approach are essential for the proper management of clinical problems. Each of the available means of rehabilitation has its own advantages, disadvantages, indications, and limitations. The configuration of the treatment plan should be devoid of clinician biases, whereas patients' realistic expectations should be taken into account.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 4","pages":"296-317"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30430754","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

Does the design of self-ligating brackets show different behavior in terms of friction? 自栓支架的设计在摩擦方面是否表现出不同的行为?

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Simona Tecco, Giuseppe Marzo, Beatrice Di Bisceglie, Vito Crincoli, Stefano Tetè, Felice Festa

{"title":"Does the design of self-ligating brackets show different behavior in terms of friction?","authors":"Simona Tecco, Giuseppe Marzo, Beatrice Di Bisceglie, Vito Crincoli, Stefano Tetè, Felice Festa","doi":"","DOIUrl":"","url":null,"abstract":"Aim: This in vitro study evaluated the friction generated by aligned stainless steel conventional brackets, self-ligating Damon MX brackets, Time3 brackets, Vision LP brackets, and low-friction Slide ligatures coupled with various stainless steel, nickel-titanium (Ni-Ti), and beta-titanium (TMA) archwires.Methods: All brackets had a 0.022-inch slot; the orthodontic archwires were 0.014-inch Ni-Ti, 0.016-inch Ni-Ti, 0.014 x 0.025-inch Ni-Ti, 0.018 x 0.025-inch Ni-Ti, 0.017 x 0.025-inch TMA, 0.019 x 0.025-inch stainless steel, and 0.019 x 0.025-inch Ni-Ti. Each bracket-archwire combination was tested 10 times.Results: Coupled with 0.014-inch Ni-Ti and 0.016-inch Ni-Ti archwire, conventional brackets generated the greatest friction, while Damon MX and Vision LP brackets generated the lowest (P < .05). No significant difference was observed between Time3 brackets and Slide ligatures. Coupled with all the rectangular archwires, Victory Series brackets, Slide ligatures, and Vision LP self-ligating brackets generated significantly lower friction than Time3 and Damon MX self-ligating brackets (P < .05).Conclusion: These findings suggest that self-ligating brackets are a great family of brackets that, in vitro, can generate different levels of friction when coupled with thin, thick, rectangular, or round archwires. Clinical conclusions based on our results are not possible, due to the limitations of the experimental conditions.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 4","pages":"330-9"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30431221","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

Treatment planning challenge 1: outcome. 治疗计划挑战1:结果。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

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A multidisciplinary approach to the treatment of a horizontally impacted mandibular second premolar: 10-year follow-up. 多学科方法治疗下颌第二前磨牙水平阻生:10年随访。

Orthodontics : the art and practice of dentofacial enhancement Pub Date : 2011-01-01

Dror Aizenbud, Liran Levin, Shaul Lin, Eli E Michtei

{"title":"A multidisciplinary approach to the treatment of a horizontally impacted mandibular second premolar: 10-year follow-up.","authors":"Dror Aizenbud, Liran Levin, Shaul Lin, Eli E Michtei","doi":"","DOIUrl":"","url":null,"abstract":"This report presents a multidisciplinary approach to the treatment of a rare case of a distally impacted mandibular second premolar indicating a 90-degree tilt of the long axis in a healthy, 15-year-old girl. It also describes the clinical and radiologic findings after a 10-year longitudinal follow-up period. The horizontally impacted mandibular second premolar was positioned behind the roots of the first molar and in close proximity to the root of the second molar, toward the lingual cortex of the mandibular body. Treatment methods required 2 years of cooperation among an orthodontist, an oral and maxillofacial surgeon, a periodontist, and an endodontist to achieve a leveled and aligned position in a properly healed condition. Finally, the horizontally impacted mandibular second premolar was correctly positioned in the arch surrounded by healed periodontal ligament tissue. Root resorption of the adjacent orthodontic anchorage units was recorded. The 10-year postoperative follow-up presented a stable, functional, and symptom-free permanent mandibular second premolar. The multidisciplinary dental team's considerations and cooperation account for the successful repositioning of the compromised mandibular second premolar with minimal damage to the surrounding hard and soft tissue following 10 years of longitudinal follow-up.","PeriodicalId":89450,"journal":{"name":"Orthodontics : the art and practice of dentofacial enhancement","volume":"12 1","pages":"48-59"},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30031793","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