Journal of Contemporary Orthodontics最新文献

A finite element method study to compare enmasse retraction of maxillary anteriors using mini implant and conventional anchorage method 使用微型种植体和传统锚固法比较上颌前牙整体后缩的有限元法研究

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.023

Mohit Makkar, Astitav Mittal, Ashish Gupta, Nazia Beg

{"title":"A finite element method study to compare enmasse retraction of maxillary anteriors using mini implant and conventional anchorage method","authors":"Mohit Makkar, Astitav Mittal, Ashish Gupta, Nazia Beg","doi":"10.18231/j.jco.2024.023","DOIUrl":"https://doi.org/10.18231/j.jco.2024.023","url":null,"abstract":"Increased upper lip procumbency is associated with protrusive maxillary dentition in Angle’s class I malocclusion, creating unaesthetic facial profile, leading to the need of orthodontic treatment where Enmasse retraction will require maximum anchorage.The present study was conducted to compare Enmasse retraction of maxillary anteriors using mini implant and conventional anchorage in Angle’s Class I malocclusion with bimaxillary protrusion. A numeric approach was adopted. Finite element method was used to determine the stress and displacement of various components at a given time by dividing it into two groups namely, Implant arrangement and T- loop arrangement for enmasse retraction. Significant differences were observed when the stress values were compared between Implant arrangement and T-loop arrangement. In Implant arrangement highest stress values were seen around the lateral incisors and in T loop arrangement stresses were found around canine and premolar. Comparison of displacement in both arrangements gave results of greater displacement in anterior and posterior segments in T-loop arrangement. Mini implants were considered more effective for enmasse retraction but in this study, it was found that although the rate of retraction/ displacement was more in T-loop arrangement but Mini implants in implant arrangement served as an absolute anchorage.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"125 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140977509","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 of cytotoxicity of copper oxide and zinc oxide hybrid nanocoated orthodontic brackets 评估氧化铜和氧化锌混合纳米涂层正畸托槽的细胞毒性

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.024

S. Duraisamy, Nirmala Anandan

{"title":"Evaluation of cytotoxicity of copper oxide and zinc oxide hybrid nanocoated orthodontic brackets","authors":"S. Duraisamy, Nirmala Anandan","doi":"10.18231/j.jco.2024.024","DOIUrl":"https://doi.org/10.18231/j.jco.2024.024","url":null,"abstract":"Using a combination of two nanoparticles for coating stainless orthodontic brackets might alter their potential cytotoxicity. The study investigated the cytotoxicity of brackets nanocoated with copper oxide, zinc oxide and a combination of both the particles. Stainless steel orthodontic brackets (Ormco Mini -Diamond series 0.22” slot, MBT prescription) (ORMCO CORP Glendora, California, USA) (n= 31 in each group) were coated with nanoparticles of copper oxide, zinc oxide and a combination of copper oxide –zinc oxide using a spray pyrolysis method. The brackets was assessed for cytotoxicity in mouse fibroblast (L929) using MTT assay with a standard control and a group of uncoated brackets for comparison. The optical density and percentage of cell viability of the 5 groups were compared with ANOVA and Post hoc Tuckey HSD. P value ≤ 0.05 was considered as statistically significant. The three groups of coated brackets and the uncoated brackets exhibited significantly lesser percentage of cell viability than the control group. The percentage of cell viability in all the four groups was greater than 70% Zinc oxide and copper oxide nanocoated brackets exhibited lesser cell viability than the combination group and the uncoated brackets.Brackets coated with combination of copper oxide and zinc oxide nanoparticles exhibited lesser cytotoxicity than the brackets coated with copper oxide or zinc oxide nanoparticles.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"27 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975509","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 comparative assessment of dento-facial aesthetics among dental, medical, nursing and physiotherapy students in a college of health sciences 卫生科学学院牙科、医学、护理和理疗专业学生牙面美学比较评估

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.029

O. Oginni, O. Soyele

{"title":"A comparative assessment of dento-facial aesthetics among dental, medical, nursing and physiotherapy students in a college of health sciences","authors":"O. Oginni, O. Soyele","doi":"10.18231/j.jco.2024.029","DOIUrl":"https://doi.org/10.18231/j.jco.2024.029","url":null,"abstract":"There is increased awareness and concerns about dentofacial aesthetics in most population. We sought to determine the self-assessment of dental aesthetics and perceived treatment need among a group of health professions trainees and compare the same with the researcher’s report using the Aesthetic component (AC) of Index of Orthodontic Treatment Need (IOTN). This was a cross-sectional study of undergraduates in our College of Health Sciences. The researcher was calibrated. Subjects supplied their socio-demographic details, responses on perception of their teeth, and smile on a self-administered questionnaire. Additionally, respondents selected and documented a picture that best matches theirs from the AC of the IOTN chart, while the researcher did the same and compared the scores. Data were analyzed using the SPSS version 16.0.: 121 students were studied. 59% were previous dental clinic attendees. The majority (80.2%) usually females rated their smile pleasant. 69.4% expressed satisfaction with the appearance of their teeth. Male and female subjects differed significantly in the ratings of their smile and teeth; with significantly more females rating themselves better than average. Subjects’ scores differ significantly from the researcher’s; most subjects rated their occlusion better especially females (p<0.001), physiotherapy students(p=0.0016), and previous clinic attendees(p=0.02). The odds of correct self-assessment increased by 1.6 with respondents' gender and department.: While dental students are well suited for dento-facial aesthetic assessment, there is a need to introduce aspects of dental aesthetics and orthodontic treatment need appraisal among other oral health subjects to curricula in college of health science.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"46 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975725","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

To evaluate the effectiveness of biting on chewie as pain management during debonding: A cross-sectional study 评估在剥离过程中咬嚼小嚼子作为止痛方法的有效性：横断面研究

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.021

Jainav Balmukund Thakkar, Harshit Naik, Kalpesh Patel, Jagruti Patil

引用次数: 0

Has social media changed the barometers of professional validation? 社交媒体是否改变了职业认可的晴雨表？

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.017

Sridevi Padmanabhan

引用次数: 0

Failure rate of infra-zygomatic crest (IZC) bone screws in orthodontics: A Systematic review 颧骨下（IZC）骨螺钉在正畸中的失败率：系统回顾

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.019

H. Nandan, Srinivas Gosla Reddy, A. Chug, Ashutosh Dixit, Pragjyoti Jha

{"title":"Failure rate of infra-zygomatic crest (IZC) bone screws in orthodontics: A Systematic review","authors":"H. Nandan, Srinivas Gosla Reddy, A. Chug, Ashutosh Dixit, Pragjyoti Jha","doi":"10.18231/j.jco.2024.019","DOIUrl":"https://doi.org/10.18231/j.jco.2024.019","url":null,"abstract":"The aim of this review is to provide a precise estimation of infra-zygomatic crest (IZC) bone screw failure rate during orthodontic treatment. Data were obtained using the Cochrane Central Register of Controlled Trails (central), PUBMED, EMBASE, google scholar, OVID, Wiley library till 1 January 2022. The titles and abstract of the electronic search were screened and evaluated by two observers according to the inclusion and exclusion criteria. This review was enrolled in PROSPERO (registration ID number CRD42020206610). There were 1725 records identified through electronic and 1 additional record identified through manual search. After 377 duplicate removal, 1349 studies were screened on the base of title and abstract the final sample included 9 studies that meet the primary inclusion criteria were selected. Each study was assessed using the evaluation method described in the Cochrane handbook for systematic reviews. All studier collectively included of the 1238 IZC miniscrews. Included studies ranged from 20 to 772 IZC miniscrews and the average number was approximate 137 IZC miniscrews per study. The diameter of inserted IZC miniscrews ranged from 1.2 to 2.3 mm and length ranged from 6 to 17 mm. The recorded failure rate ranged from 0% to 47.2%, and the average failure rate for IZC miniscrew was 9.45% (with 95% CI [58.91; 93.82]).IZC miniscrew has low failure rate which suggest that IZC miniscrew are clinically reliable. Miniscrew are a stable anchorage for orthodontic tooth movement and zygomatic buttress of maxilla is suitable region for skeletal anchorage device placement.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"19 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140976675","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

Management of class III malocclusion in adult patient using buccal shelf bone screw: A case report 使用颊架骨螺钉治疗成年患者的 III 类错牙合畸形：病例报告

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.034

Sandeep Atmaramji Jethe, Shirish Game, Varsha V. Merani, Shailesh Dongre, Arun R. Mhaske, Suyog Shendage

{"title":"Management of class III malocclusion in adult patient using buccal shelf bone screw: A case report","authors":"Sandeep Atmaramji Jethe, Shirish Game, Varsha V. Merani, Shailesh Dongre, Arun R. Mhaske, Suyog Shendage","doi":"10.18231/j.jco.2024.034","DOIUrl":"https://doi.org/10.18231/j.jco.2024.034","url":null,"abstract":"A skeletal Class III malocclusion can be treated with orthopaedic camouflage either with Face mask or Chin cup therapy or extraction of premolar, and orthognathic surgical method depending on the complexity of skeletal and dental manifestation that Class III malocclusion had. Skeletal Class III malocclusion can be treated with Accurate treatment planning since malocclusion having lot off aesthetic as well as functional problem depending on the severity of the discrepancy.Here we presenting a case reports of Angle's Class III malocclusion which has been treated effectively with distalisation of lower arch Using 2 buccal shelf screws (2x12mm) with elastic chains following lower third molars extraction. In addition, improvement was observed in the soft tissue profile of the case. After 16 months of treatment, the case achieved an aesthetic and functional occlusion. A non-surgical approach of a 23-year-old male with skeletal and dental Class III malocclusion, concave profile, anterior crossbite, and a negative overjet of 5 mm while retaining the patient's profile was achieved. At the conclusion of the procedure, positive improvement with functional and aesthetic result were attained.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"34 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140974677","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

Composite lateral cephalometric norms– A pooled estimate of 137 Indian studies 复合头侧测量标准--137 项印度研究的汇总估算结果

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.025

Elbe Peter, J. Monisha

{"title":"Composite lateral cephalometric norms– A pooled estimate of 137 Indian studies","authors":"Elbe Peter, J. Monisha","doi":"10.18231/j.jco.2024.025","DOIUrl":"https://doi.org/10.18231/j.jco.2024.025","url":null,"abstract":"The aim was to derive pooled mean for the commonly used lateral cephalometric parameters for populations belonging to different regions of the country and to compare the derived norms between them. Electronic databases such as Google, Google Scholar, Medline (via PubMed), and Scopus were searched for studies deriving regional lateral cephalometric norms. Grey literature search and hand search were also performed. An online survey was conducted among orthodontists to identify the most commonly used cephalometric parameters.137 studies were included from a total of 9693 records. The studies retrieved were grouped according to region of study as South, North, Central and West, and North-East. A total of 44 parameters were finalised for which the pooled mean and SD were estimated. The values differed significantly between different populations for most skeletal and dental parameters. The South Indians were found to have more prognathic maxilla (M= 82.74±2.07, F= 82.80±2.05) and mandible (M= 80.36±2.01, F= 79.94±1.93) compared to North Indians (SNA: M= 81.68±4.71, F= 81.15±3.26; SNB: M= 79.40±4.30, F= 78.76±3.39). The ANB angle was found to be the least in the Central and West Indians (M= 1.91±2.07, F= 2.06±1.95). The South Indians also showed increased upper incisor inclination (Upper 1 to NA: M= 27.46±4.2, F= 27.41±6.16), while it was least in the North Indians (M= 21.59, F= 23.73).This was a novel attempt to derive pooled mean for the commonly used cephalometric parameters for the Indian population, which can serve as a reference for clinicians and researchers alike.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"62 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972467","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 of a challenging case of impacted, severely dilacerated & deflected maxillary central incisors: A case report with 10 years follow up 治疗一例具有挑战性的上颌中切牙撞击、严重扩张和偏斜病例：病例报告及 10 年随访

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.033

Kratika Mishra, Param Makhija, Mukesh Gupta

引用次数: 0

A survey on the knowledge and perception of orthodontic clear aligner systems among general dentists 关于普通牙医对透明牙齿矫正系统的了解和看法的调查

Journal of Contemporary Orthodontics Pub Date : 2024-05-15 DOI: 10.18231/j.jco.2024.027

Diptiman Narayan Goswami, Nishan Ansari, Arun AV, Mahendra S, Chandrashekar BS, Aravind S Raju, Mahesh Manjunath Chikamagalur

{"title":"A survey on the knowledge and perception of orthodontic clear aligner systems among general dentists","authors":"Diptiman Narayan Goswami, Nishan Ansari, Arun AV, Mahendra S, Chandrashekar BS, Aravind S Raju, Mahesh Manjunath Chikamagalur","doi":"10.18231/j.jco.2024.027","DOIUrl":"https://doi.org/10.18231/j.jco.2024.027","url":null,"abstract":"To date, there is no information available on the general dentist’s experience with Clear Aligner case selection, type of clinical practice etc. Therefore, the purpose of this survey was to evaluate the knowledge of general dentists in their experience and types of dental malocclusion treated with CA, the patients demand and perception of CA treatment.A structured questionnaire was created to evaluate the knowledge and perception of clear aligner therapy among the general dentists. The study sample comprised of 196 licensed general dental practitioners who had more than 2 years of clinical experience post graduation. The structured questionnaire included 17 closed ended questions which sought to assess the knowledge and perception of Clear Aligner Therapy among the general dentists.There is a need for increased education and awareness among general dentists to enhance their knowledge and expertise in providing clear aligner treatment.: Overall, clear aligners have revolutionized orthodontic treatment by offering improved aesthetics, patient acceptance, and quality of life.","PeriodicalId":497876,"journal":{"name":"Journal of Contemporary Orthodontics","volume":"39 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972770","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