Iranian Journal of Orthodontics最新文献

Nasolabial Angle in Profiles Perceived as Attractive: A Scoping Review 鼻唇角在轮廓中被认为是有吸引力的:一个范围综述

Iranian Journal of Orthodontics Pub Date : 2021-09-20 DOI: 10.5812/ijo.119232

Shekoufeh Mohammadi, L. Eslamian, S. Motamedian

{"title":"Nasolabial Angle in Profiles Perceived as Attractive: A Scoping Review","authors":"Shekoufeh Mohammadi, L. Eslamian, S. Motamedian","doi":"10.5812/ijo.119232","DOIUrl":"https://doi.org/10.5812/ijo.119232","url":null,"abstract":"Context: The nose and lips area play an important role in facial appearance and nasolabial angle (NLA) can be considered as a determinant factor for attractiveness. The perception of beauty and attractiveness is vastly influenced by media and thus, can change with trends over time. The aim of this study was to conduct a systematic review of literature on NLA in faces perceived as attractive over time and in different ethnic groups. Evidence Acquisition: This study was performed following preferred reporting items for systematic reviews and meta-analyses extension for Scoping Reviews (PRISMA-ScR) guideline. We conducted an electronic search using PubMed, Scopus, and Embase databases with the employment of MeSH and free text terms \"beauty\"[MeSH], \"esthetics\"[MeSH], \"soft tissue\", \"nasolabial angle\", \"attractive\" and \"cephalometric analysis\". The inclusion criteria were studies that indicated facial attractiveness by a panel of at least 10 judges, evaluated the soft tissue profile characteristics, and reported the preferred NLA. Results: The search results revealed 271 related articles, of which 21 studies investigated NLA as a conducive factor in profile attractiveness and were included in the review. The range of preferred NLA was 86° to 107° for men and 84° to 123.12° for women. Conclusions: The most pleasing lip position and subsequently NLA is influenced by variables including the observer and subject’s gender, and their ethnic background as well as time. Over all, NLA in faces perceived as attractive is more obtuse in women than men. Compared to white norms, NLA is more acute among Chinese and African-Americans, while amongst Iranian women, it is not distinctly far from North American Caucasians. Over the course of time, preferred NLA has significantly changed in women but has been unwavering in men.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130160182","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

Using OI and DAI Index to Compare the Need and Demand of Orthodontic Treatment 利用OI和DAI指数比较正畸治疗的需求

Iranian Journal of Orthodontics Pub Date : 2021-09-06 DOI: 10.5812/ijo.116762

F. Golfeshan, P. Salehi, K. Beygi

{"title":"Using OI and DAI Index to Compare the Need and Demand of Orthodontic Treatment","authors":"F. Golfeshan, P. Salehi, K. Beygi","doi":"10.5812/ijo.116762","DOIUrl":"https://doi.org/10.5812/ijo.116762","url":null,"abstract":"Objectives: The objective of this research was to compare the orthodontic treatment need and demand using Dental Aesthetic Index (DAI) and Occlusal Index (OI) among dentistry students of Shiraz University of Medical Sciences. Methods: This descriptive cross-sectional study was performed on 113 dental students in Shiraz University of Medical Sciences. The demand for orthodontic treatment was assessed using a standardized questionnaire and 10 photographs of aesthetic component (AC) of IOTN for the self-assessment of subjects about their dental attractiveness. Occlusal Index (OI) and Dental Aesthetic Index (DAI), which were calculated by clinical examination and dental model analysis, were used to assess the orthodontic treatment need. Students with a history of orthodontic treatment were excluded. Results: Final analysis was done on 113 cases (48 men and 65 women). The study showed that there was a significant relationship between the demand for orthodontic treatment and the self-assessment of subjects about their dental attractiveness (according to the photograph they had chosen) (P = 0.015). There is also a significant relationship between the self-assessment of subjects about their dental attractiveness (according to the photographs) and the orthodontic treatment need based on DAI (P = 0.008). Furthermore, a significant connection was found between the self-assessment of subjects about their dental attractiveness (according to the photographs) and the orthodontic treatment need based on OI (P < 0.001). Conclusions: The results of our study revealed that both indices show that the need for orthodontic treatment is in line with the demand, which could be used for planning public orthodontic and dental services.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126400004","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

Evaluating General Dental Practitioners’ Knowledge About Appropriate Timing of Orthodontic Treatment in the North of Iran 评估伊朗北部普通牙科医生关于正畸治疗适当时机的知识

Iranian Journal of Orthodontics Pub Date : 2021-09-01 DOI: 10.5812/ijo.117781

F. Sobouti, R. Alizadeh-Navaei, Mehran Armin, A. Lotfizadeh, Mehdi Aryana, S. Dadgar

{"title":"Evaluating General Dental Practitioners’ Knowledge About Appropriate Timing of Orthodontic Treatment in the North of Iran","authors":"F. Sobouti, R. Alizadeh-Navaei, Mehran Armin, A. Lotfizadeh, Mehdi Aryana, S. Dadgar","doi":"10.5812/ijo.117781","DOIUrl":"https://doi.org/10.5812/ijo.117781","url":null,"abstract":"Background: Orthodontics is defined as a branch of dentistry that concerns the correction of malocclusion. In this regard, determining the most appropriate time for orthodontic treatment is of utmost importance. General dental practitioners (GDPs) are normally the first link of the treatment chain for patients requiring orthodontic treatment. Objectives: The present study aimed to determine the GDPs’ knowledge of the appropriate timing of orthodontic treatment in Sari, Iran. Methods: This descriptive, analytical and cross-sectional study was performed on GDPs working in Sari in 2019. The statistical population included 380 GDPs, 186 of whom were selected. Data was collected using a 24-item questionnaire aimed to evaluate the GDPs’ knowledge level of the appropriate timing of orthodontic treatment. Data analysis was performed using SPSS version 19. Results: In total, 142 out of 186 GDPs participated in the study with a mean age of 36.12 ± 10.15 years. 86 subjects (59.9%) had less than 10 years of work experience. Total mean (± SD) knowledge level of the GDPs was estimated at a moderate level (14.13 ± 3.79). Percentage of the knowledge levels considered as poor, moderate and good was 12, 70, and 18, respectively. There was a significant relationship between knowledge level and gender (P = 0.013). Meanwhile, no association was observed between the work experience of the participants and their level of knowledge (P = 0.393). Conclusions: According to the results of the present study, the total mean score of GDPs’ knowledge about the appropriate timing for orthodontic treatment in Sari was moderate, and only 12% of the participants had a poor knowledge level in this regard. It is notable that male subjects had a significantly higher knowledge level, and another analysis demonstrated the lack of effectiveness of work experience on the knowledge level of individuals.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126855787","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

Assessment of the Mechanical Properties of Three Commercially Available Thermoplastic Aligner Materials Used for Orthodontic Treatment 三种用于正畸治疗的市售热塑性矫正材料的机械性能评估

Iranian Journal of Orthodontics Pub Date : 2021-07-31 DOI: 10.5812/ijo.116573

A. Ranjan, A. Biradar, Ankita Patel, Vanessa Varghese, A. Pawar, R. Kulshrestha

{"title":"Assessment of the Mechanical Properties of Three Commercially Available Thermoplastic Aligner Materials Used for Orthodontic Treatment","authors":"A. Ranjan, A. Biradar, Ankita Patel, Vanessa Varghese, A. Pawar, R. Kulshrestha","doi":"10.5812/ijo.116573","DOIUrl":"https://doi.org/10.5812/ijo.116573","url":null,"abstract":"Objectives: This studied aimed to measure the yield strength and stress relaxation properties of three commercially available thermoplastic aligner materials. Methods: The three different thermoplastics aligner materials Duran (Scheu, Iserlohn, Germany), Erkodur (Pfalzgrafenweiler, Erkodent, Germany) and Track (Forestadent, Germany) were selected. A three-point bending test was carried out via the universal testing machine to measure their yield strength and stress relaxation properties. An independent t-test was performed for intergroup comparison. P-value < 0.05 was set as the level of significance. Results: All the selected three polymers liberate a notable amount of stress during 24 hours. The highest stress release was observed in Duran i.e. 18.96 N/cm2 as compared to Erkodur, which was 13.96 N/cm2 and Track, which was 13.18 N/cm2. The yield strength of Duran was the highest (75.85 Mpa) compared to Track and Erkodur with the yield strength of 52.75 Mpa and 55.86 Mpa, respectively. Conclusions: Tooth movement is influenced by the composition of aligner material and its thickness. Duran had the highest stress release and yield strength. Stress released by different aligners exceeds around half of the initial stress value, which directly affects the orthodontic force application and subsequent tooth movement.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"22 6S 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133197405","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

The Relationship Between Salivary Dehydroepiandrosterone Sulphate (DHEAS) Levels and Skeletal Maturation Parameters Before and During Pubertal Growth Spurt in Children 儿童青春期生长高峰前后唾液硫酸脱氢表雄酮(DHEAS)水平与骨骼成熟参数的关系

Iranian Journal of Orthodontics Pub Date : 2021-07-28 DOI: 10.5812/ijo.116370

Tahseen Sultana, Penmetcha Sarada, Namineni Srinivas, C. Reddy, S. O. Kumar, S. Hasanuddin

{"title":"The Relationship Between Salivary Dehydroepiandrosterone Sulphate (DHEAS) Levels and Skeletal Maturation Parameters Before and During Pubertal Growth Spurt in Children","authors":"Tahseen Sultana, Penmetcha Sarada, Namineni Srinivas, C. Reddy, S. O. Kumar, S. Hasanuddin","doi":"10.5812/ijo.116370","DOIUrl":"https://doi.org/10.5812/ijo.116370","url":null,"abstract":"Objectives: This study aimed to assess the skeletal maturation by using salivary DHEAS levels and its correlation with existing skeletal maturity parameters represented by cervical vertebrae and MP3 region radiographs in adolescents in pre-pubertal and pubertal age groups. Methods: In this study, 80 children in the age range of 8 - 14 years were divided into two equal groups based on their chronological age as group I (pre-pubertal group) and group II (pubertal group). Pre-existing lateral cephalograms and medial phalanx of third finger (MP3) radiographs of their left hands were assessed. The levels of the DHEAS of each individual were analysed by ELISA kit. ANOVA with post-hoc Tukey’s test and student t-test were used for statistical analysis. P-value < 0.05 was considered significant. Results: The mean level of DHEAS values shown in the present study was 4.36 +/- 0.32 ng/mL in group I and 5.73+/-0.39 ng/mL in group II. This study showed that in group I, more subjects were in stage 1 of cervical vertebral maturation than stage 2 and there were significant differences between the two stages (P-value = 0.011); also, in group II, more subjects were in stage 3 than 4 and there were significant differences between the two stages (P-value = 0.017). This study revealed the highest salivary DHEAS levels to be in the F stage of pre-pubertal MP3 development in addition to the H stage of MP3 development in pubertal children. This study noted that there were significant differences for salivary DHEAS levels between males and females not only in pre-pubertal (P-value = 0.031), but also in pubertal stages (P-value < 0.001). Conclusions: Salivary DHEAS, like cervical vertebra and MP3 radiographs, can be used for growth assessment in young adolescents.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116514861","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: 2

Salivary Sodium and Potassium Concentrations in Patients with Fixed Orthodontic Appliances 固定正畸矫治器患者唾液钠钾浓度变化

Iranian Journal of Orthodontics Pub Date : 2021-07-13 DOI: 10.5812/IJO.116064

M. Esfehani, Bahareh Mohammad Zahraiee, Sepideh Arab, F. Hajmanoochehri, Mohammadtaghi Vatandoust

{"title":"Salivary Sodium and Potassium Concentrations in Patients with Fixed Orthodontic Appliances","authors":"M. Esfehani, Bahareh Mohammad Zahraiee, Sepideh Arab, F. Hajmanoochehri, Mohammadtaghi Vatandoust","doi":"10.5812/IJO.116064","DOIUrl":"https://doi.org/10.5812/IJO.116064","url":null,"abstract":"Objectives: This study was aimed to assess salivary sodium and potassium concentrations in patients with fixed orthodontic appliances. Methods: In this case-control study, saliva samples (5 cc) were collected from 13 patients with fixed orthodontic appliances before, and 1 week, 1 month and 3 months after the beginning of the orthodontic treatment using the spitting method. Saliva samples were also collected from 10 healthy individuals as controls. The saliva samples were centrifuged at 3000 rpm for 10 minutes and the salivary sodium and potassium concentrations were measured by spectrophotometry. Data were analyzed using independent and paired t-tests. P-value < 0.05 was considered as significant. Results: The salivary sodium and potassium concentrations were almost the same in both groups at baseline (P > 0.05). A significant reduction in sodium and an increase in potassium levels were noted in the case group at 1 week compared with baseline (P < 0.001). At 1 week, the potassium concentration was significantly higher and the sodium concentration was significantly lower in the case group (P < 0.01). The salivary sodium significantly increased while the salivary potassium significantly decreased at 1 month compared with 1 week (P < 0.001). The differences with the control group were also significant (P < 0.05). No significant differences were noted between the two groups at 3 months (P > 0.05). Conclusions: Time has a significant effect on the release profile of sodium and potassium ions from orthodontic appliances. The salivary sodium and potassium concentrations returned to their normal pretreatment values within 3 months after the start of fixed orthodontic treatment.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132838331","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

Comparison of Maxillary Central Incisor, Crown Angulation and Tooth Size Variation in Aesthetic and Non-aesthetic Smiles- A Cross Sectional Study 美学微笑与非美学微笑中上颌中切牙、牙冠角度及牙尺寸变化的横断面研究

Iranian Journal of Orthodontics Pub Date : 2021-07-10 DOI: 10.5812/IJO.116469

T. Shyagali, Rachita Singh, Anil Tiwari, Abhishek Gupta

{"title":"Comparison of Maxillary Central Incisor, Crown Angulation and Tooth Size Variation in Aesthetic and Non-aesthetic Smiles- A Cross Sectional Study","authors":"T. Shyagali, Rachita Singh, Anil Tiwari, Abhishek Gupta","doi":"10.5812/IJO.116469","DOIUrl":"https://doi.org/10.5812/IJO.116469","url":null,"abstract":"Background: An attractive smile is often attributed to incisor alignment and proclined or retroclined incisors could contribute to a less aesthetic smile. Objectives: This study was aimed to evaluate the maxillary central incisor crown inclination, crown angulation and tooth size variation in aesthetic and unattractive smiles. Methods: The study was conducted among 100 females (equally divided into aesthetic and unaesthetic smile groups), aged between 15 - 25 years, with Angle’s Class I normal occlusion and balanced profiles. Variations in maxillary central incisor crown inclination and angulation were measured on lateral cephalograms, photographs and the study models of the subjects. Variations in tooth morphology were also evaluated by measuring crown height and width in both groups. Mann-Whitney U test was performed to evaluate the difference between the aesthetic and unaesthetic smiles. P < 0.05 was considered as significant. Results: This study showed that incisor angulation was significantly higher in the unaesthetic group compared to the aesthetic group (P < 0.001). However, there was no statistically significant difference for the incisor inclination relative to the Palatal Plane between the aesthetic and unaesthetic smile groups (P = 0.086). In addition, there were significant differences between the aesthetic and the non-aesthetic groups regarding the central incisor height (P < 0.05). Conclusions: The findings of this study indicate that the possible variations in aesthetics are related to the ethnic elements that are associated with differences in crown angulations, as well as tooth size.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133386862","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 Evaluation of Space Closure Rate Between Newer Generation Ceramic Brackets and Conventional Straight Wire Appliances 新一代陶瓷支架与传统直丝器具空间闭合率的比较评价

Iranian Journal of Orthodontics Pub Date : 2021-06-19 DOI: 10.5812/ijo.115974

John Jr, G. Reddy, A. Kalha, S. Muddaiah, S. Somaiah, B. Shetty

{"title":"A Comparative Evaluation of Space Closure Rate Between Newer Generation Ceramic Brackets and Conventional Straight Wire Appliances","authors":"John Jr, G. Reddy, A. Kalha, S. Muddaiah, S. Somaiah, B. Shetty","doi":"10.5812/ijo.115974","DOIUrl":"https://doi.org/10.5812/ijo.115974","url":null,"abstract":"Background: With the emerging concept of aesthetics in orthodontics, ceramic brackets play a major role especially in the anterior region of the dental arch. However, the duration of the orthodontic treatment is one of the most important issues in treating patients with ceramic brackets. Objectives: This study is conducted to compare space closing rate between conventional MBT and Symetri ClearTM bracket systems. Methods: This study is comprised of 18 subjects who were equally separated into two groups. The first group was treated with conventional MBT pre-adjusted bracket and the second group with Symetri ClearTM brackets. Space closure was performed via 0.019 × 0.025 inch stainless steel wires using 9-mm nickel-titanium Sentalloy coil springs with a constant force of 150 g. The distance between the distal of the first molar buccal tube and the mesial of the canine bracket was measured by a digital caliper. The difference of the first and last values was determined to assess the sheer quantity of space closure. The value was then divided by the number of months during which the space closure was carried out to examine the ratio of space closure in mm per month. For the statistical analysis we used paired t test as well as independent t test and the P-value > 0.05 was deemed significant. Results: The MBT group showed a 0.85 mm/appointment retraction rate while the Symetri ClearTM bracket group had a 0.83 mm/appointment retraction rate. The difference in space closing between MBT and Symetri ClearTM groups was not statistically and clinically significant (P-value > 0.05). Conclusions: As the rate of space closure was almost similar in the two types of brackets, we can use Symetri ClearTM brackets instead of MBT brackets without any concern about the duration of treatment and use the esthetic benefits of these brackets simultaneously.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116776830","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

Comparison of the Postgraduate Orthodontics Curriculum in Mashhad Dental School with the Top Ten Dental Schools in the World 马什哈德牙科学院研究生正畸课程与世界排名前十的牙科学院的比较

Iranian Journal of Orthodontics Pub Date : 2021-06-07 DOI: 10.5812/ijo.114415

M. Abtahi, Negin Azizzadeh, H. Bagheri, Alireza Ghasemzadeh

{"title":"Comparison of the Postgraduate Orthodontics Curriculum in Mashhad Dental School with the Top Ten Dental Schools in the World","authors":"M. Abtahi, Negin Azizzadeh, H. Bagheri, Alireza Ghasemzadeh","doi":"10.5812/ijo.114415","DOIUrl":"https://doi.org/10.5812/ijo.114415","url":null,"abstract":"Background: Recognizing and reviewing the educational curricula of the specialized fields of dentistry and comparing it with the curricula of the top universities in the world will help to provide the necessary changes and corrections in postgraduate dental education, leading to more skilled specialists. Objectives: The aim of this study was to compare the orthodontics post graduate curriculum of Mashhad dental school with the top 10 international dental schools. Methods: Twenty-two of the world's top universities (10 main and 12 reserve) that offer orthodontics postgraduate programs were selected. A checklist including eight key factors and some secondary variables was prepared. These factors were classified as quantitative and qualitative. The checklist was filled with information provided by university websites and contacting program directors using email. A sample t-test and descriptive-analytic approach were respectively used to analyze the quantitative and qualitative data. Results: Among the quantitative factors that were evaluated, only the “percentage of completely treated patients” was significantly lower in Mashhad dental school compared with that of the top 10 international dental schools. There was no significant difference regarding the length of study, the number of professors, and the number of patients visited by each resident. Among the qualitative factors, the most diversity was seen in certificates awarded to graduates. Conclusions: No significant difference was observed in didactic education, clinical training, and research project conduction between the orthodontics post graduate program of Mashhad dental school and top-tier international universities.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130637992","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

Comparison of Changes in Incisors Inclination and Dental Arch Dimensions in Damon and MBT Systems Using Dolphin Software 用Dolphin软件比较Damon和MBT系统门牙倾斜和牙弓尺寸的变化

Iranian Journal of Orthodontics Pub Date : 2021-05-11 DOI: 10.5812/IJO.114444

N. Eslami, Farid Sharifi, Athar Nasseri, A. Jahanbin

{"title":"Comparison of Changes in Incisors Inclination and Dental Arch Dimensions in Damon and MBT Systems Using Dolphin Software","authors":"N. Eslami, Farid Sharifi, Athar Nasseri, A. Jahanbin","doi":"10.5812/IJO.114444","DOIUrl":"https://doi.org/10.5812/IJO.114444","url":null,"abstract":"Background: There is great controversy regarding the effect of MBT and Damon bracket systems on dental arch dimensions and incisor position. Objectives: We aimed to study the effects of two different brackets (MBT and Damon) on dental arch dimensions and incisors position after orthodontic treatment. Methods: In this retrospective study, the records of 20 patients who underwent orthodontic treatment with MBT or Damon bracket systems were studied. All patients had class I skeletal and dental malocclusion and were treated without extraction. The patients were treated either with Damon or MBT bracket systems (n = 10). Lateral cephalograms were traced using the Dolphin software to determine the position of incisors. In addition, transverse dimensions of dental arches were measured on occlusal photographs. Fishers’ exact test, independent-test, Man-Whitney, paired t-test, and Wilcoxon were used for statistical analysis. P < 0.05 was set as significant. Results: There was no significant difference between the two groups regarding age, sex, and initial values of the variables studied. U1-Apog (mm), upper inter-canine, lower inter-second premolar distance showed a significant difference before and after treatment in the Damon system. However, no significant difference was observed between initial and post-treatment values in the MBT group. L1-Apog (°), IMPA (°), maxillary inter-first and second premolars, inter-canine, and mandibular inter-canine distance was higher in the Damon system after treatment compared to MBT. Changes of the upper and lower transverse dimensions of the dental arches and the incisor positional did not reveal a notable difference in the Damon and MBT systems (P > 0.05). Conclusions: There was no significant difference regarding changes in dental arches and incisor positions between the Damon and MBT systems.","PeriodicalId":320129,"journal":{"name":"Iranian Journal of Orthodontics","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122126887","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