International Journal of Orthodontic Rehabilitation最新文献_第6页

Forces generated with the use of intrusion arches in orthodontics – A review of literature 在正畸中使用侵入弓产生的力——文献综述

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-07-01 DOI: 10.4103/ijor.ijor_17_21

Stuti Raj, P. Chandra, Ragni Tandon, N. Asok, Abhimanyu Singh

引用次数: 0

Evaluation of stress distribution in maxilla, mandible, and glenoid fossa after Class III intermaxillary traction: A three-dimensional finite element analysis study III类上颌间牵引后上颌、下颌骨和关节窝应力分布的评估:三维有限元分析研究

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-07-01 DOI: 10.4103/ijor.ijor_22_21

W. Bhad, Anil Dhage, N. Baheti, Santosh J. Chavan, N. Mehta

{"title":"Evaluation of stress distribution in maxilla, mandible, and glenoid fossa after Class III intermaxillary traction: A three-dimensional finite element analysis study","authors":"W. Bhad, Anil Dhage, N. Baheti, Santosh J. Chavan, N. Mehta","doi":"10.4103/ijor.ijor_22_21","DOIUrl":"https://doi.org/10.4103/ijor.ijor_22_21","url":null,"abstract":"Aim: In this study, we aimed to evaluate the stress distribution on maxilla, mandible, and glenoid fossa after application of Class III intermaxillary anteroposterior orthopedic forces of 150, 250, and 400 gas applied to a three-dimensional (3D) model of the young human dry skull. Methods: A 3D finite element model was developed from the computed tomography images of a growing boy (age, 13 years). ANSYS (version 16.0) software used to simulate Class III force of progressively increasing intensity over maxilla, mandible, and glenoid fossa to quantify the biomechanical reaction with two components, direction and stress. Results: We quantified detailed changes in the maxillofacial sutures, dentition, mandible, and glenoid fossa with bone-anchored maxillary protraction (BAMP) to analyze their effects. Conclusions: As the force increases from 150, 250 to 400 g, stresses are increased on all structures associated except maxillary central incisor which show a decrease in the stresses. Although forces were for maxillary protraction, stress generated at the circummaxillary sutures was minimal. As with any other Class III force, stresses were distributed on whole of condyle, capsular ligament, and minimal at glenoid fossa. This suggests that BAMP has more of mandibular restraining effect.","PeriodicalId":29888,"journal":{"name":"International Journal of Orthodontic Rehabilitation","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48767279","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

Evaluation of skeletal changes in mandibular ramus height, corpus length, and mandibular angle changes following twin block appliance therapy using cone-beam computed tomography: A clinical prospective study 锥形束计算机断层扫描评估双块矫治器治疗后下颌支高度、体长和下颌角变化的骨骼变化：一项临床前瞻性研究

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-07-01 DOI: 10.4103/ijor.ijor_3_21

V. Shetty, K. Shetty

{"title":"Evaluation of skeletal changes in mandibular ramus height, corpus length, and mandibular angle changes following twin block appliance therapy using cone-beam computed tomography: A clinical prospective study","authors":"V. Shetty, K. Shetty","doi":"10.4103/ijor.ijor_3_21","DOIUrl":"https://doi.org/10.4103/ijor.ijor_3_21","url":null,"abstract":"Aim and Objectives: This study aims to evaluate the skeletal changes in mandibular ramus height, corpus length, and mandibular angles changes following twin block (TB) functional appliance therapy using cone-beam computed tomography (CBCT). Methodology: Fifteen patients with skeletal Class II, growing of 9–14 years of age with mandibular retrognathism, were treated with TB functional appliance treatment. Pretreatment CBCT and posttreatment CBCT were taken (T0) before treatment and (T1) at the end of the 12 months following TB therapy. The data obtained are analyzed and compared for the skeletal changes in ramus height, corpus length, and mandibular angle changes following therapy. Student's paired t-test was used compare the pre- and post-treatment periods. Results: The test results demonstrate that the Ramus height (mm) in posttreatment period was significantly increased as compared to pretreatment period. The mean increase of 1.23 mm in the ramus height between pre- and post-treatment period was statistically significant at P < 0.001, and that the corpus length (mm) in posttreatment period was significantly increased as compared to pretreatment period. The mean increase of 3.35 mm in the corpus length between pre- and post-treatment period was statistically significant at P < 0.001, and demonstrate that the mean gonial angle (degrees) in posttreatment period was significantly increased as compared to pretreatment period. This mean increase of 3.18° in the gonial angle between pre- and post-treatment period was statistically significant at P < 0.001. Conclusion: TB appliance therapy increases the ramus height, and corpus length stimulating the growth of condyle in backward and upward direction and increases the gonial angle by backward rotation of mandible.","PeriodicalId":29888,"journal":{"name":"International Journal of Orthodontic Rehabilitation","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41842794","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 and comparison of mechanical properties between commercially available mini-implants: An in vitro study 评估和比较市售微型植入物的机械性能:一项体外研究

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-07-01 DOI: 10.4103/ijor.ijor_18_21

A. Singh, M. Rathore, S. Govil, Vinay Umale, R. Kulshrestha, R. Singh

{"title":"Evaluation and comparison of mechanical properties between commercially available mini-implants: An in vitro study","authors":"A. Singh, M. Rathore, S. Govil, Vinay Umale, R. Kulshrestha, R. Singh","doi":"10.4103/ijor.ijor_18_21","DOIUrl":"https://doi.org/10.4103/ijor.ijor_18_21","url":null,"abstract":"Objective: The objective of this study is to evaluate the mechanical properties of different commercial brands of mini-implants by subjecting them to loads perpendicular to their long axis. Materials and Methods: A total of 120 mini-implants were divided into six groups (n = 20): Group 1A - 20 stainless steel (SS) mini-implants (SK Orthodontics, India), Group 1B - 20 SS mini-implants (BK Orthodontics, India), Group 1C - 20 SS mini-implants (JSV Surgicals, India), Group 2A - 20 titanium mini-implants (Koden surgical, India), Group 2B - 20 Titanium mini-implants (JSV Orthodontics, India), and Group 2C - 20 titanium mini-implants (Dentos, Korea) were used. The mini-implants were placed perpendicularly into 12 acrylic blocks and were submitted to mechanical tests using a standard universal testing machine (ACME, India. Model no. UNIT TEST-10). The different forces required to fracture mini-implants after undergoing 0.5, 1, 1.5, and 2 mm deformation was assessed. Results: Mini-implants in Group 2C (Titanium Dentos Korea) required the greatest force to deform and fracture, whereas Group 1C (JSV Surgicals, India) had the lowest fracture force. Statistically significant differences were seen when an intragroup comparison was done. Statistically significant differences were seen in the comparison between the SS and titanium groups (P < 0.05). The SS group required lower forces to deform and fracture as compared to the titanium group. Conclusions: SS mini-implants exhibited a high degree of resistance to deform and fracture, but they were inferior compared with titanium mini-implants. Titanium mini-implants required higher force values to deform and fracture.","PeriodicalId":29888,"journal":{"name":"International Journal of Orthodontic Rehabilitation","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43969173","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

Fast track orthodontics: A review on methods of accelerating orthodontic treatment 快速口腔正畸：加速正畸治疗方法综述

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-04-01 DOI: 10.4103/ijor.ijor_4_21

Vaibhav R Ambashikar, Suresh K. Kangane, S. Ambekar, Yatishkumar S. Joshi

引用次数: 1

A Content Analysis of “Ultra morphology, Surface Roughness of Enamel, and Clinical Manifestations on Dental Health after Various Enamel Stripping, Polishing, and Poststripping Enamel Protection Methods” “各种脱釉、抛光及脱釉后保护方法对牙釉质的超微形态、表面粗糙度及临床表现”内容分析

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-04-01 DOI: 10.4103/ijor.ijor_7_21

Shitanshu Tiwari, Purva Joneja, D. Choudhary

{"title":"A Content Analysis of “Ultra morphology, Surface Roughness of Enamel, and Clinical Manifestations on Dental Health after Various Enamel Stripping, Polishing, and Poststripping Enamel Protection Methods”","authors":"Shitanshu Tiwari, Purva Joneja, D. Choudhary","doi":"10.4103/ijor.ijor_7_21","DOIUrl":"https://doi.org/10.4103/ijor.ijor_7_21","url":null,"abstract":"Background: The purpose of the study is to qualitatively evaluate the ultramorphology, surface roughness, and clinical manifestations on dental health after various stripping, polishing, and postpolishing enamel protection methods which were followed by various researchers to sum up the more pragmatic and less pragmatic results through the research methodology of content analysis. Objectives: To qualitatively and inductively evaluate various stripping, polishing, and postpolishing enamel protection methods on ultramorphology and enamel surface roughness along with its clinical effects on dental health after thorough content analysis to provide a sound knowledge to the clinician to justify their decisions related to interproximal reduction (IPR), to make it an extremely useful space gaining tool if used with due caution. Materials and Methods: A comprehensive search of articles related to this study was collected from the past 25 years and a conceptual type of content analysis of all the selected articles was done. Inferences obtained through the analysis of the documented research data were then summed up in tabular form. Results: The results summated to the very important fact that all stripping methods microscopically leave a roughened enamel surface but clinically have no deleterious effects on dental health if performed judiciously followed by appropriate polishing and postpolishing protection methods. Conclusion: It can be determined that IPR should be carried out with greatest caution when using coarser stripping devices followed by prolonged polishing, but cautious use of finer stripping devices could be a better choice along with suitable polishing and protection methods.","PeriodicalId":29888,"journal":{"name":"International Journal of Orthodontic Rehabilitation","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46936344","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

A novel diagnostic tool for sagittal jaw relationship: The P angle 一种新的矢状颌关系诊断工具:P角

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-04-01 DOI: 10.4103/ijor.ijor_6_21

Pavankumar R Singh, A. Ambekar, Suresh K. Kangane

{"title":"A novel diagnostic tool for sagittal jaw relationship: The P angle","authors":"Pavankumar R Singh, A. Ambekar, Suresh K. Kangane","doi":"10.4103/ijor.ijor_6_21","DOIUrl":"https://doi.org/10.4103/ijor.ijor_6_21","url":null,"abstract":"Aim: To introduce a new cephalometric measurement called P-angle using three skeletal landmarks&#s8212;point S, point Gn, and point A, to evaluate the sagittal relationship between the maxilla and mandible. Materials and Methods: A total of 130 pretreatment lateral cephalograms were selected and segregated into skeletal Class I, II, and III groups based on W-angle and ANB angle. It included 50 Class I (25 males and 25 females), 50 Class II (25 males and 25 females), and 30 Class III (13 males and 17 females) skeletal pattern patients. The P angle was formed between the line from point A perpendicular to the S-Gn line and line A-Gn. The P-angle and W-angle were measured in each patient. Data was entered in MS Excel sheet and analyzed by using SPSS software 24.0 version IBM USA. The mean and standard deviation of P-angle and W-angle was calculated and were compared using an unpaired t-test. Results: The unpaired t-test results showed that there is no significant difference between P-angle and W-angle in Class I, Class II, and Class III skeletal pattern. Conclusion: P-angle can be used as an adjunct for W-angle during pretreatment cephalometric tracing.","PeriodicalId":29888,"journal":{"name":"International Journal of Orthodontic Rehabilitation","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46489726","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

An innovative therapeutic alternative for correcting the direction of eruption of a lower mandibular cuspid: A mixed dentition case report 矫正下颌尖牙萌出方向的创新治疗方案：一例混合牙列病例报告

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-04-01 DOI: 10.4103/ijor.ijor_8_21

Patricia Vergara-Villareal, Karen Del Castillo, D. Ramírez-Ossa, D. Barbosa-Liz

引用次数: 1

Noncompliant way of maxillary molar distalization 上颌磨牙远端方式不顺应

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-04-01 DOI: 10.4103/ijor.ijor_43_20

N. Chanu, Kuldeep Phukon, Trilokya Bharali, Jitendra Sharan

引用次数: 0

Severe acute respiratory syndrome-coronavirus-2 viral infection and orofacial clefts: A review on patient care during and after COVID-19 pandemic 严重急性呼吸综合征-冠状病毒-2病毒感染与口腔颌面部裂:COVID-19大流行期间和之后患者护理综述

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International Journal of Orthodontic Rehabilitation Pub Date : 2021-04-01 DOI: 10.4103/ijor.ijor_42_20

Smarika Jain, P. Vibhute, C. Patil, Vinay Umale, Balaji Kendre, Pankaj J Akhare

{"title":"Severe acute respiratory syndrome-coronavirus-2 viral infection and orofacial clefts: A review on patient care during and after COVID-19 pandemic","authors":"Smarika Jain, P. Vibhute, C. Patil, Vinay Umale, Balaji Kendre, Pankaj J Akhare","doi":"10.4103/ijor.ijor_42_20","DOIUrl":"https://doi.org/10.4103/ijor.ijor_42_20","url":null,"abstract":"To summarize the details on severe acute respiratory syndrome-coronavirus-2 (SARS-Cov-2) viral infection and the effects of this infection on care of patients with orofacial clefts and provision of guidelines for orofacial cleft surgeries during Corona virus disease 2019 (COVID-19) by using recent available literature. PubMed and Google Scholar and current reports from major health bodies such as the Centers of Disease Control and Prevention, World Health Organization, National Institutes of Health, and major national associations of cleft lip and palate were searched for information which is relevant from orthodontic care for orofacial cleft point of view. Major priority is given to recent articles and peer-reviewed articles. Narration is done due to limitations in the quality of evidence and rapidly evolving information on the nature of COVID-19. Major relevance to the dental field is human-to human transmission of SARS-CoV-2. People who are infected mostly show mild symptoms, but patients with advanced age or any underlying disease or comorbidity may show severe multiorgan complications. During the COVID-19 pandemic, it is important to maintain social distancing and minimize direct contact. Most clinics and hospitals have determined that multidisciplinary visits, feeding, and speech-language evaluations are largely nonessential and can tolerate a delay. A specific plan with good foundation should be followed for emergency orthodontic care with effective communication and triage.","PeriodicalId":29888,"journal":{"name":"International Journal of Orthodontic Rehabilitation","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45156181","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