Journal of Orthodontic Science最新文献_第8页

Comparative evaluation of frictional characteristics between nano coated and non coated orthodontic brackets and arch wire configuration-An experimental in vitro study. 纳米涂层和非涂层正畸托槽与弓丝结构摩擦特性的比较评价一项体外实验研究。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_47_23

M Hemanth, S W Afshan, B Alif Ahmed, J P Darsan, M Aravind, M P Suchitra

{"title":"Comparative evaluation of frictional characteristics between nano coated and non coated orthodontic brackets and arch wire configuration-An experimental in vitro study.","authors":"M Hemanth, S W Afshan, B Alif Ahmed, J P Darsan, M Aravind, M P Suchitra","doi":"10.4103/jos.jos_47_23","DOIUrl":"10.4103/jos.jos_47_23","url":null,"abstract":"Objective: To compare and assess the coefficient of frictional resistance between nano-coated orthodontic brackets and orthodontic archwires with conventional orthodontic brackets and archwires.Methodology: In this experimental study, 128 samples were divided into 4 groups consisting of 32 orthodontic wires and brackets in each group. The samples were randomly allocated into GROUP A- ZNO nanoparticle coated archwires and brackets, GROUP B ZNO nanoparticle coated bracket and conventional archwire, GROUP C-ZNO nanoparticle coated archwire and conventional bracket, and GROUP D- conventional archwire and bracket after positioning them on special jigs frictional resistance was studied and evaluated. Bon - Ferroni test was used for inter group comparison and one way ANOVA was used for intr-group comparison.Results: The lowest mean frictional resistance is seen with Group A (nanocoated archwire with nanocoated bracket) N = 0.3401 ± 0.420; and highest with Group D (conventional brackets with conventional archwires) N = 0.8413 ± 0.60. a significant difference in mean frictional resistance was observed between the groups (P ≤ 0.01). The frictional resistance for the groups was in the following order from lowest to highest: group A Conclusion: The study showed decreased friction in ZNO nanoparticle coated archwires and brackets than conventional archwires and brackets.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"59"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/eb/1c/JOS-12-59.PMC10597377.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A cross-sectional study into the reasons behind orthodontic re-treatment. 一项关于正畸再治疗背后原因的横断面研究。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_116_22

Nada E Tashkandi, Sara A Asiri, Raneem A Al Bin Ali, Amal Z Maalawi, Sumaia H Alwan, Shaden M Alabood, Ruba M Alsharif

{"title":"A cross-sectional study into the reasons behind orthodontic re-treatment.","authors":"Nada E Tashkandi, Sara A Asiri, Raneem A Al Bin Ali, Amal Z Maalawi, Sumaia H Alwan, Shaden M Alabood, Ruba M Alsharif","doi":"10.4103/jos.jos_116_22","DOIUrl":"10.4103/jos.jos_116_22","url":null,"abstract":"Objective: This study aims to identify the motivations behind orthodontic re-treatment in Saudi Arabia.Materials and methods: This is a cross-sectional study performed through a patient questionnaire. The questionnaire elicited data on the respondents' socio-demographic data, type of previous orthodontic treatment, retention, satisfaction level, and reasons for undergoing orthodontic re-treatment.Results: Four hundred and nineteen responses were received during the study period from June to July 2022. The result showed a pre-dominant female predilection (83, 29%), with the majority belonging to the 21-25 age group (47.26%). Most participants had had one previous orthodontic treatment (77%), with an active treatment time of approximately 1-3 years (55.85%). There was no significant difference between the satisfaction of outcomes after the initial treatment and at the time of the survey. Most participants received retention appliances (69.45%) and were informed about the importance of appliances. The type of retention was mainly removable retainers (47.5%). Around one-third of the sample (31.98%) were interested in seeking orthodontic re-treatment, with self-motivation as the primary drive and improving the smile as the predominant reason.Conclusion: The study's findings show that a large portion of the population is seeking orthodontic re-treatment, which must be considered. Self-motivation was a driving force rather than external motivation. The most common reason for seeking orthodontic re-treatment was to improve their smile and the increased esthetic demand.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"56"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/26/4a/JOS-12-56.PMC10597372.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of maxillary first molar rotation on the severity of dental class II malocclusion: A cross-sectional study. 上颌第一磨牙旋转对II类错牙合严重程度的影响：一项横断面研究。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_3_23

Lidhiya Alexander, A Shanaj Doulath, V Arun

{"title":"Influence of maxillary first molar rotation on the severity of dental class II malocclusion: A cross-sectional study.","authors":"Lidhiya Alexander, A Shanaj Doulath, V Arun","doi":"10.4103/jos.jos_3_23","DOIUrl":"10.4103/jos.jos_3_23","url":null,"abstract":"Aim: The aim of the study was to evaluate and assess the influence of maxillary molar rotation on severity of dental class II malocclusion.Materials and methods: The study comprised of 4 different groups namely, 1/4th class II malocclusion, 2/4th class II malocclusion, 3/4th class II malocclusion and full class II malocclusion involving sample size of 20,15,16 and 12. The samples were subjected to digital evaluation of maxillary 1st permanent molar rotation using 4 parameters namely angle of Friel, Ricketts E-Line, angle of Henry and Premolar angle.Results: The results were subjected to statistical analysis using one way ANOVA wherein group IV (Full class II malocclusion) exhibited a greater rotational value. On evaluation, angle of Friel exhibited a mean of 59.6±1.61 degrees, Ricketts E-Line was found to be 12.3±1.77mm while angle of Henry showed a mean of 19±3.19 degrees and premolar angle was 12.5±5.83 degrees.Conclusion: On evaluating molar rotation using angle of Friel, Ricketts E-Line, angle of Henry and premolar angle, full cusp class II malocclusion presented higher degree of mesiopalatal rotation maxillary molar rotation. With increasing mesiopalatal rotation, the severity of molar relation also increased from 1/4th to full class II. Hence the maxillary molar spatial position along the long axis majorly influences the molar relation wherein a full cusp class II molar relation exhibits higher degree of molar rotation.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"52"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/7e/6f/JOS-12-52.PMC10597379.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of vanillin nanoparticles on antimicrobial and mechanical properties of an orthodontic adhesive. 香草醛纳米颗粒对正畸粘合剂抗菌和力学性能的影响。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_124_22

Mahmood Kh Ahmed, Niam Riyadh Alsaleem, Saeed AlSamak

{"title":"The effect of vanillin nanoparticles on antimicrobial and mechanical properties of an orthodontic adhesive.","authors":"Mahmood Kh Ahmed, Niam Riyadh Alsaleem, Saeed AlSamak","doi":"10.4103/jos.jos_124_22","DOIUrl":"10.4103/jos.jos_124_22","url":null,"abstract":"Aims: To evaluate the effect of adding vanillin nanoparticles on the antimicrobial and mechanical properties of the orthodontic adhesive.Materials and methods: Transbond XT orthodontic adhesive (3M Unitek, Monrovia, California, USA) was modified with 1% and 2% vanillin nanoparticles. The chemical composition and degree of chemical conversion in orthodontic adhesive before and after adding vanillin nanoparticles to orthodontic adhesive were measured using Fourier transformation infrared spectroscopy (FTIR). Mechanical properties of unmodified orthodontic adhesive (UMOA) and 1% and 2% vanillin-modified orthodontic adhesive (VMOA) were assessed in shear bond strength (SBS) and tensile bond strength (TBS). The antimicrobial properties were evaluated using a Mueller-Hinton plate swapped with streptococcus mutans. The zone of bacterial inhibition for UMOA, 1% VMOA, and 2% VMOA was measured. Descriptive statistics, multiple comparisons, one-way ANOVA, and post hoc Duncan's test were used to compare among the results.Results: FTIR showed no chemical conversion of 1% VMOA and 2% VMOA. There was significant streptococcus mutans growth inhibition in 1% VMOA and 2% VMOA compared to UMOA. No significant difference in streptococcus mutans growth inhibition in 1% VMOA and 2% VMOA. The SBS decreased significantly in 1% VMOA compared to UMOA. In addition, SBS decreased insignificantly when comparing 1% VMOA and 2% VMOA. TBS significantly reduced in 2% VMOA compared with UMOA. In addition, there was no significant difference in TBS between UMOA and 1% VMOA, and 1% VMOA and 2% VMOA, respectively.Conclusions: The 1% VMOA has improved antimicrobial properties and kept mechanical properties of orthodontic adhesive within the acceptable level.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"46"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e4/d7/JOS-12-46.PMC10597367.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of resin infiltration pretreatment on the microleakage under orthodontic bracket (an in vitro study). 树脂浸润预处理对正畸托槽下微渗漏的影响（体外研究）。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_102_22

Leqaa H Qibi, Lamiaa A Hasan, Zaid Dewachi

{"title":"Influence of resin infiltration pretreatment on the microleakage under orthodontic bracket (an in vitro study).","authors":"Leqaa H Qibi, Lamiaa A Hasan, Zaid Dewachi","doi":"10.4103/jos.jos_102_22","DOIUrl":"10.4103/jos.jos_102_22","url":null,"abstract":"Objectives: In order to assess the changes in tooth orthodontic adhesive interface microleakage after applying a caries resin penetrated to the sound enamel tooth surface in different storage media.Materials and methods: A total of 60 human maxillary first premolars (orthodontic extraction) were collected by random separation of the teeth into two equal groups. The control group was classified into three subgroups (n = 10) (control in deionized water, control in milk, and control in energy drink), while the experimental one (treated with ICON) was categorized into three subgroups (n = 10) (ICON in deionized water, ICON in milk, and ICON in energy drink) incubation phase lasted three weeks in total.Results: A one-way analysis of variance (ANOVA) yielded a significant difference between all experimental subgroups (ICON in deionized water, ICON in milk, and ICON in energy drink) and control subgroups (control in deionized water, control in milk, and control in energy drink). The control group in the energy drink subgroup had the highest mean microleakage value when compared to the other subgroups, whereas the resin-infiltrated group in deionized water had the lowest mean value. According to the results of the T-test, ICON pre-treatment tooth samples had significantly lower mean values of microleakage than non-ICON tooth samples.Conclusions: The adhesive system (control group) revealed that a resin infiltrate on a sound enamel surface prior to orthodontic bracket bonding reduced bracket tooth interface microleakage in all examined samples. The ICON-infiltrated surface was discovered to provide a secondary preventive strategy against white spot lesion development by reducing microleakage under brackets.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"43"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/16/8b/JOS-12-43.PMC10597359.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nickel and copper ion release, deflection and the surface roughness of copper-nickel-titanium orthodontic archwire in sodium fluoride solution. 铜镍钛正畸弓丝在氟化钠溶液中的镍和铜离子释放、偏斜和表面粗糙度。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_92_22

Erliera Sufarnap, Kholidina Imanda Harahap, Sally Cynthiana, Muhammad Reza

{"title":"Nickel and copper ion release, deflection and the surface roughness of copper-nickel-titanium orthodontic archwire in sodium fluoride solution.","authors":"Erliera Sufarnap, Kholidina Imanda Harahap, Sally Cynthiana, Muhammad Reza","doi":"10.4103/jos.jos_92_22","DOIUrl":"10.4103/jos.jos_92_22","url":null,"abstract":"Objective: Sodium fluoride (NaF) is commonly used in oral hygiene products, leading to corrosion and reduced archwire properties. In addition, ion release can cause allergies and become toxic to the oral environment. This research aimed to observe the Nickel (Ni) and Copper (Cu) ions released that affected initial corrosion as deflection and surface roughness changed in the Copper-Nickel-Titanium (CuNiTi) archwire.Material and methods: The total samples were 54 copper-nickel-titanium (CuNiTi-Tanzo, American orthodontic®) archwires immersed in three solutions. Artificial saliva was used in the control group NaF 0.05%, and a NaF 0.15% solution was used in the intervention groups (n = 6). The groups were divided into three observation times (two, four, and six weeks). Cu and Ni ions released, deflection, the surface roughness of the archwires, and solution acidities were recorded and analyzed.Results: Ni and Cu ion release and surface roughness of the CuNiTi archwires significantly increased as the NaF concentration increased. The Ni ion release improved along the immersion period; the opposite was true for the Cu ion release. The solutions became more alkaline after the CuNiTi archwires were immersed. The pH and the archwires' deflections of the three solutions did not show significant differences.Conclusion: The NaF increased Cu-Ni ion release and surface roughness but not the deflection force of the CuNiTi. The increase was affected by the concentration and duration of immersion.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"44"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/86/29/JOS-12-44.PMC10597362.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Validity and reliability of the orthodontic experience questionnaire in Malayalam, an Indian language. 印度语言马拉雅拉姆语正畸体验问卷的有效性和可靠性。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_5_23

Baby Jisha, Sreehari Sathyanadhan, Shobha Sundareswaran, Prathapan Parayaruthottam, Muhammed Shibin

{"title":"Validity and reliability of the orthodontic experience questionnaire in Malayalam, an Indian language.","authors":"Baby Jisha, Sreehari Sathyanadhan, Shobha Sundareswaran, Prathapan Parayaruthottam, Muhammed Shibin","doi":"10.4103/jos.jos_5_23","DOIUrl":"10.4103/jos.jos_5_23","url":null,"abstract":"Aim: To translate the orthodontic experience questionnaire into Malayalam, an Indian language, and assess its validity and reliability in the Kerala population.Materials and methods: The original questionnaire, which was developed in English, was translated into Malayalam. Face validity was assessed, and minor changes were made, followed by a content validity assessment by an expert panel. The final version was given to 324 patients who marked their responses on a Likert scale. Internal consistency reliability was tested using Cronbach's alpha, and test-retest reliability was tested using the intraclass correlation coefficient. Principal component factor analysis was performed to regroup the valid items.Results: The principal component factor analysis revealed three domains. Reliability assessed by Cronbach's alpha of the whole questionnaire was 0.799, and that of the three domains was 0.73, 0.71, and 0.71, respectively. The test-retest reliability was found to be good (0.798).Conclusion: The Malayalam version of the orthodontic experience questionnaire was found to be content valid with good reliability. To obtain a successful treatment result, an orthodontist must be aware of these and this questionnaire, with adequate validity and reliability, has been designed to achieve this in the Malayalam-speaking population.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"48"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6f/4b/JOS-12-48.PMC10597366.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A systematic review and meta-analysis of the role of nutrition and its impact on orthodontic treatment/management. 营养作用及其对正畸治疗/管理影响的系统综述和荟萃分析。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_85_23

Mohammad Khursheed Alam, Huda Abutayyem, Haytham Jamil Alswairki, Mohammad Younis Hajeer, Yahya Abdullah Alogaibi

{"title":"A systematic review and meta-analysis of the role of nutrition and its impact on orthodontic treatment/management.","authors":"Mohammad Khursheed Alam, Huda Abutayyem, Haytham Jamil Alswairki, Mohammad Younis Hajeer, Yahya Abdullah Alogaibi","doi":"10.4103/jos.jos_85_23","DOIUrl":"10.4103/jos.jos_85_23","url":null,"abstract":"The nutritional needs already increased by adolescent growth, activity, and stress are further exacerbated by the physical, physiological, and psychological stress that orthodontic treatment causes. Hence, the main objective of this systematic review was to analyze the relationship between adequate nutrition and its impact on orthodontic treatment success rates. Using relevant keywords, reference searches, and citation searches, the databases such as PubMed-Medical Literature Analysis and Retrieval System Online, Web of Science, Cochrane, and Scopus were all searched. \"Diet,\" \"Minerals,\" \"Nutrition,\" \"Orthodontics,\" and \"Vitamins\" were the search terms used to scour the database. The 10 studies selected for the systematic review and subsequent meta-analysis could not conclusively establish the correlation between proper nutrition and its impact on orthodontic treatment of the patient. There was virtually little connection between patients' dietary intake and the effectiveness of their orthodontic treatment. Additionally, a direct causal link between the two could not be established legitimately because the majority of the studies reviewed only noted an impact during the early stages of the treatment. PROSPERO Registration Number: CRD42022380828.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"41"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f8/ac/JOS-12-41.PMC10597360.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence of malocclusion and orthodontic treatment needs among adolescents in Najran City, Saudi Arabia. 沙特阿拉伯Najran市青少年错牙合患病率和正畸治疗需求。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_51_23

Dhafer Alyami, Adel Alharbi, Yousef Hatan, Yahya M Asiri, Hussein Alharthy, Yahya Abdullah Alogaibi

{"title":"Prevalence of malocclusion and orthodontic treatment needs among adolescents in Najran City, Saudi Arabia.","authors":"Dhafer Alyami, Adel Alharbi, Yousef Hatan, Yahya M Asiri, Hussein Alharthy, Yahya Abdullah Alogaibi","doi":"10.4103/jos.jos_51_23","DOIUrl":"10.4103/jos.jos_51_23","url":null,"abstract":"Aim: To determine the prevalence of malocclusions and the need for orthodontic treatment in a sample of school-going adolescents in the Najran city, Kingdom of Saudi Arabia (KSA).Methodology: This cross-sectional study was conducted among 1094 school-going Saudi male adolescents. The age range of the sampled adolescents was 13-18 years, and none of them had any history of orthodontic treatment. A survey chart related to malocclusion was designed and filled up after clinical examination by a single experienced and calibrated examiner. The need for orthodontic treatment was assessed using the Index of Orthodontic Treatment Need (IOTN).Result: The present study's findings demonstrated 61.2% of the samples with Angle's Class I malocclusions, 27.5% with Class II, and 11.4% of samples with Class III malocclusion. A significant difference was observed between the different classes of malocclusion (P < 0.001). Most samples presented normal overjet, crossbite, and no reverse overjet, deep bite, or open bite. The number of samples with no treatment need was 573 (52.37%), with slight treatment in 185 (16.91%) samples, moderate treatment needs in 123 (11.24%) samples, and severe and extreme treatment needs were 109 (9.96%) and 104 (9.50%), respectively. A significant difference was observed between the samples with no or slight treatment need (grades 1 and 2), moderate need (grade 3), and definite treatment need (grades 4 and 5) (p < 0.001).Conclusion: The prevalence of malocclusion and IOTNs among the sample of school-going adolescents in the Najran city was 47.63%. However, 9.63% of those samples required immediate attention for orthodontic treatment.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"60"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fb/36/JOS-12-60.PMC10597378.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Survival analysis of temporary anchorage devices: A retrospective analysis in a Nigerian orthodontic patient population. 临时固定装置的生存分析：尼日利亚正畸患者群体的回顾性分析。

Journal of Orthodontic Science Pub Date : 2023-09-04 eCollection Date: 2023-01-01 DOI: 10.4103/jos.jos_10_23

Onyinye Dorothy Umeh, Uzoma Linda Offojebe, Ikenna Gerald Isiekwe, Ifeoma Utomi, Oluranti daCosta

{"title":"Survival analysis of temporary anchorage devices: A retrospective analysis in a Nigerian orthodontic patient population.","authors":"Onyinye Dorothy Umeh, Uzoma Linda Offojebe, Ikenna Gerald Isiekwe, Ifeoma Utomi, Oluranti daCosta","doi":"10.4103/jos.jos_10_23","DOIUrl":"10.4103/jos.jos_10_23","url":null,"abstract":"Objectives: Temporary anchorage devices (TADs) are skeletal anchorage devices. They are minimally invasive and placed by the orthodontist to prevent unwanted tooth movement. This study evaluated the survival rate of orthodontic TADs at 6 months. This study also assessed the effect of age, gender, side, site, dental arch of placement, and length of the TADs on its survival rate.Materials and methods: Ethical approval was obtained from the Health Research Ethics Committee of the hospital. The study sample comprised orthodontic patients who required the placement of TADs during treatment at a private dental facility in Lagos. Data for the study were obtained from the case files of the study subjects and included the subjects' age, gender, date of placement of the TADs, the site, side and arch of placement, the length of the TADs, and the survival rate of 6 months after placement.Results: We reviewed 90 placed TADs and observed a survival rate of 88.9%. Most TAD failures occurred in the first month of placement (p = 001). There was no observable statistically significant effect of all other variables assessed (age, gender, arch, site, side, or implant length) on the survival rate of the TADs.Conclusions: The survival rate of TADs was high. Most TAD failures significantly occurred within one month of placement. There was no significant association between all other clinical variables and orthodontic mini-implant survival.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"45"},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/87/04/JOS-12-45.PMC10597358.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50161952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0