Turkish Journal of Orthodontics最新文献

Effect of Different Liquids and Thermal Aging Procedures on the Shear Bond Strength of APC II, APC Flash-Free, and Conventional Ceramic Brackets: An In Vitro Study. 不同液体和热老化程序对 APC II、APC Flash-Free 和传统陶瓷牙托剪切结合强度的影响：体外研究。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2023.2023.5

Hasan Camcı, Şeyda Canbaz Çevik

{"title":"Effect of Different Liquids and Thermal Aging Procedures on the Shear Bond Strength of APC II, APC Flash-Free, and Conventional Ceramic Brackets: An In Vitro Study.","authors":"Hasan Camcı, Şeyda Canbaz Çevik","doi":"10.4274/TurkJOrthod.2023.2023.5","DOIUrl":"10.4274/TurkJOrthod.2023.2023.5","url":null,"abstract":"Objective: The purpose of this study was to compare the effects of cherry juice, coffee, coke, gastric acid, and the thermo-aging procedure (TAP) on the shear bond strength (SBS) of APC II, APC flash-free, and conventional ceramic brackets.Methods: A total of 180 human premolar teeth were randomly divided into three major groups according to the type of ceramic bracket. Then, six subgroups (n=10) were established from each major group: Group 1: control; Group 2: only TAP; Group 3: 72 hours of cherry juice exposure + TAP; Group 4: 72 hours of coffee exposure + TAP; Group 5: 72 hours of coke exposure + TAP; and Group 6: 24 hours gastric acid exposure + TAP. SBS was assessed for each specimen using a universal test device, and the adhesive remnant index (ARI) was scored under a light microscope. Kruskal-Wallis and post-hoc Tamhane tests were used to analyze the data.Results: Among the control groups, the highest SBS value belonged to conventional ceramic brackets (p<0.01). SBS values for all groups decreased as a result of each liquid and TAP. Gastric acid and coke had the greatest detrimental effects on SBS, while TAP had the least negative effects. The SBS values of APC II, APC flash-free, and conventional brackets were found to be statistically insignificant after different liquid exposures and TAP.Conclusion: TAP and various fluids had a negative impact on the SBS value of ceramic brackets. SBS values, however, were still higher than clinically acceptable (8-9 MPa) values, even after exposure to gastric acid and coke.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"140-145"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589170/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355783","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

Evaluation of the Effects of Orthopedic Treatment on the Dentofacial Structure and Upper Airway of Subjects with Skeletal Class III Malocclusion. 评估矫形治疗对畸形牙颌面结构和上气道的影响。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2023.2023.3

Hilal Kan, Tevfik Sözen, Oğuz Öğretmenoğlu, Semra Ciğer

{"title":"Evaluation of the Effects of Orthopedic Treatment on the Dentofacial Structure and Upper Airway of Subjects with Skeletal Class III Malocclusion.","authors":"Hilal Kan, Tevfik Sözen, Oğuz Öğretmenoğlu, Semra Ciğer","doi":"10.4274/TurkJOrthod.2023.2023.3","DOIUrl":"10.4274/TurkJOrthod.2023.2023.3","url":null,"abstract":"Objective: The present study aimed to evaluate the effect of rapid maxillary expansion (RME) and face mask treatment on the upper airway in patients with maxillary retrusion in two dimensions using digital cephalograms and volumetric evaluation using acoustic rhinometric measurements.Methods: A total of 22 individuals with a concave profile and skeletal and dental Class III malocclusion during growth and development with a mean age of 9.9±1.38 years were included in the study. A bonded RME appliance and a petit face mask were adapted for the patients. Before treatment (T0) and after maxillary protraction (T1), lateral cephalometric films and acoustic rhinometric recordings were obtained. The dependent sample t-test was used for statistical evaluation.Results: Cephalometric analysis revealed forward movement of the maxilla and backward downward rotation of the mandible. A significant increase was observed in the nasopharyngeal and oropharyngeal regions of the upper airway. Three-dimensional evaluation of the upper airway by acoustic rhinometry revealed only an increase in the volumes of the left nasal cavity after decongestant administration. A statistically significant increase in acoustic rhinometric measurements in nasal valves. When the correlation of the cephalometric findings of the nasopharyngeal region with the acoustic rhinometry findings was examined, no statistically significant relationship was found.Conclusion: As a result of this study, we observed an increase in the cephalometric measurements of the nasopharyngeal and oropharyngeal areas. A significant increase was observed in the minimal cross-sectional area measured by acoustic rhinometry.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"153-161"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355785","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

Pharyngeal Airway Space Changes after Single Mandibular and Two-Jaw Surgery in Patients with Skeletal Class II Malocclusion. 骨性 II 类错牙合畸形患者下颌单颌和双颌手术后咽部气道空间的变化。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2024.2023.50

Nurver Karslı, Ayşe Tuba Altuğ

{"title":"Pharyngeal Airway Space Changes after Single Mandibular and Two-Jaw Surgery in Patients with Skeletal Class II Malocclusion.","authors":"Nurver Karslı, Ayşe Tuba Altuğ","doi":"10.4274/TurkJOrthod.2024.2023.50","DOIUrl":"10.4274/TurkJOrthod.2024.2023.50","url":null,"abstract":"Objective: To retrospectively evaluate the effects of single mandibular advancement (MA) and two-jaw surgery (2J-S) on the pharyngeal airway space (PAS) and hyoid position for the correction of skeletal Class II malocclusion.Methods: Eleven adult patients who underwent only MA surgery and twelve adult patients who underwent Le Fort I maxillary impaction-MA surgery (2-JS) were included in the retrospective study. A total of 46 cephalometric recordings obtained before (T1) and after treatment (T2) were examined. Craniofacial changes, area, and linear measurements of the pharyngeal airway and hyoid bone position were obtained in both groups. The Wilcoxon signed-rank test was used to evaluate time-dependent changes within groups. The Mann-Whitney U test was used to compare differences between groups.Results: Hyoid-Vert values increased significantly in both groups (MA, p<0.01; 2J-S, p<0.05); however, Hyoid-Hor values decreased significantly only in the 2J-S group (p<0.01). The anteroposterior dimensions of the airway increased in both groups, except for the PNS-P and PPS groups (p<0.01). Although a significant increase was observed in the nasopharyngeal area (A1) in the MA group (p<0.05), the decrease was found to be statistically significant in 2JG (p<0.01). Significant increases were found in the oropharyngeal (A2) and hypopharyngeal areas (A3) in both groups (p<0.01, p<0.05).Conclusion: Both surgical procedures for the correction of Class II malocclusion resulted in increased hypopharyngeal, oropharyngeal, and total airway measurements.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"182-192"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589177/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355788","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

Evaluation of the Effects of TENS Therapy and Acetaminophen on Pain Alleviation in Initial Orthodontic Treatment. 评估 TENS疗法和对乙酰氨基酚对缓解初期正畸治疗疼痛的效果。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2024.2022.21

Kunal Sharma, Rajiv Ahluwalia, Stutee Grewal, Tina Chugh

{"title":"Evaluation of the Effects of TENS Therapy and Acetaminophen on Pain Alleviation in Initial Orthodontic Treatment.","authors":"Kunal Sharma, Rajiv Ahluwalia, Stutee Grewal, Tina Chugh","doi":"10.4274/TurkJOrthod.2024.2022.21","DOIUrl":"10.4274/TurkJOrthod.2024.2022.21","url":null,"abstract":"Objective: This prospective study aimed to evaluate the analgesic effects of acetaminophen and Transcutaneous Electric Nerve Stimulation (TENS) therapy for pain control.Methods: Forty orthodontic patients who underwent fixed orthodontic treatment were randomly assigned to one of 3 groups: (1) acetaminophen, (2) TENS therapy, or (3) control. Pain was evaluated at 12, 24, 36, and 48 hours after the placement of both 0.014\" NiTi and 0.016\" NiTi archwires using a 10 cm visual analogue scale (VAS). Because the data were found to be non-normal, Kruskal-Wallis test was employed for both stage I and stage II intra-group comparisons.Results: For both stage I and stage II, evaluation of the VAS scores for all 3 groups at different time intervals showed that the difference between groups A and B was statistically insignificant (p>0.05). The scores of Group A compared to Group C were significant, and Group B compared to Group C showed significant values.Conclusion: Both TENS and acetaminophen reduced the pain experienced by patients compared with the placebo group. The acetaminophen group showed VAS results similar to those of the TENS group.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"162-167"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589175/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355786","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

Bibliometric Analysis of Maxillary Expansion Publications Trends. 颌骨扩张出版物趋势的文献计量分析。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2023.2023.113

Ali Kiki, Alper Özdoğan, Muhammed Abdullah Kiki, Yavuz Selim Genç

{"title":"Bibliometric Analysis of Maxillary Expansion Publications Trends.","authors":"Ali Kiki, Alper Özdoğan, Muhammed Abdullah Kiki, Yavuz Selim Genç","doi":"10.4274/TurkJOrthod.2023.2023.113","DOIUrl":"10.4274/TurkJOrthod.2023.2023.113","url":null,"abstract":"Objective: Maxillary expansion is a common treatment in clinical orthodontics and can be performed in a wide age range using different methods. This bibliometric analysis aims to provide an overview of research on maxillary expansion.Methods: A literature search was performed in the Web of Science database, and publications related to maxillary expansion between 1970 and 2023 were included. Data, including titles, abstracts, keywords, countries, regions, and references, were exported and analyzed within the scope of the bibliometric indicators.Results: The study was conducted on 2633 publications. Between 1970 and 2023, research on maxillary expansion showed a general upward trend in the number of publications. From the analyzed publications, we observed that rapid maxillary expansion (RME) was the most common type of maxillary expansion, accounting for 78% of all publications. Most publications originated from the United States (24.3%), and these articles were also the most cited (17180). Lorenzo Franchi contributed the most publications (85, 3.2%) and was cited 2830 times for maxillary expansion. The highest number of publications was from the University of Sao Paolo (119), and the most cited institution was the University of Florence (3287).Conclusion: The bibliometric indicators showed a rapid increase in the number of published works on the topic of maxillary expansion, particularly in recent years. Advances in patient evaluation (3D imaging, modeling) and application methods (mini-screws, clear aligners) appear to have helped to maintain the popularity of maxillary expansion. We also observed that maxillary expansion is associated with several other specialties in addition to dentistry.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"193-200"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589172/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355715","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

Evaluation of Maxillary Protraction Using a Mini Screw-Retained Palatal C-Shaped Plate and Face Mask. 使用微型螺钉固定腭C形板和面罩评估上颌前突。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2023.2022.63

Mohamed Abdallah Elsaharty, Safaa Ali Ghobashi, Eman El-Shorbagy

{"title":"Evaluation of Maxillary Protraction Using a Mini Screw-Retained Palatal C-Shaped Plate and Face Mask.","authors":"Mohamed Abdallah Elsaharty, Safaa Ali Ghobashi, Eman El-Shorbagy","doi":"10.4274/TurkJOrthod.2023.2022.63","DOIUrl":"10.4274/TurkJOrthod.2023.2022.63","url":null,"abstract":"Objective: To evaluate a newly designed minimally invasive palatal-plate face mask combination for the management of developing Class III malocclusion due to maxillary deficiency.Methods: A sample of 16 Class III patients due to maxillary deficiency in the early mixed dentition (8 boys and 8 girls) aged between 7 and 9 years participated in this study and were treated with a combination of palatal plate face masks. Extra-oral elastics were attached between the intra-oral and extra-oral appliances; the elastics were set at 30° to the occlusal plane. The force magnitude was 250-300 g per quadrant. Cephalometric radiographs were taken before and immediately after maxillary protraction. In addition, skeletal measurements were measured, tabulated, and statistically analyzed. The pre- and post-protraction measurements were compared using the Student's t-test, and the significance level was set at a p-value <0.05.Results: A statistically significant increase in SNA angle and maxillary length was observed by 3.13±1.52 degrees and 2.60±0.75 mm (p<0.05), respectively, indicating forward maxillary growth. The skeletal and soft tissue patterns were also improved, as evidenced by the statistically significant increase in the ANB angle, Wits appraisal, and H angle by 4.50±1.28 degrees, 5.30±1.86 mm, and 5.02±3.24 degrees (p<0.05), respectively. A favorable clockwise mandibular rotation was observed as evidenced by the increase in the SN/MP angle and the decrease in the SNB angle by 1.46±1.96 degrees and -1.38±1.86 degrees (p<0.05), respectively.Conclusion: The palatal-plate facemask combination is an effective treatment alternative for Class III malocclusion due to maxillary deficiency with minimal pain and discomfort.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"146-152"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355784","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

Pain Perception, Knowledge, Attitude, and Diet Diversity in Patients Undergoing Fixed Orthodontic Treatment: A Pilot Study. 接受固定正畸治疗的患者对疼痛的感知、知识、态度和饮食多样性：一项试点研究

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2023.2023.13

Mok E-Vien, Ummi Sofia Binti Abdul Rahman, Snigdha Misra, Kirti Saxena

{"title":"Pain Perception, Knowledge, Attitude, and Diet Diversity in Patients Undergoing Fixed Orthodontic Treatment: A Pilot Study.","authors":"Mok E-Vien, Ummi Sofia Binti Abdul Rahman, Snigdha Misra, Kirti Saxena","doi":"10.4274/TurkJOrthod.2023.2023.13","DOIUrl":"10.4274/TurkJOrthod.2023.2023.13","url":null,"abstract":"Objective: This study aimed to determine the correlation between pain perception and knowledge, attitude, and diet diversity in patients undergoing fixed orthodontic treatment.Methods: A total of 103 patients (15-40 yrs.; 67 females, 36 males) undergoing orthodontic treatment with a 0.022-inch slot (MBT prescription) in both arches were recruited. Information on pain perception, knowledge, attitude, and diet diversity scores was collected through validated questionnaires using visual analogue scale and close-ended questions at one time point. The correlation between variables was analyzed using the Pearson's correlation coefficient.Results: Of the patients, 48.5% were aged 15 to 19 years old, with 65% females and 73.8% of Chinese ethnicity. Approximately 90% of the orthodontic patients perceived low levels of pain from orthodontic treatment, and 98% had a positive attitude toward orthodontic treatment. The patients had a good level of knowledge (Mean: 6±0.65). Approximately 49.5% of patients reported having moderate diet diversity. No significant correlation was found between pain perception and knowledge, or pain perception and diet diversity (r=0.062, p=0.534). However, a significant weak negative correlation (r=-0.289, p<0.05) between pain perception and attitude was observed.Conclusion: Patients undergoing fixed orthodontic treatment presented with overall low pain perception, a positive attitude, and good knowledge about their treatment with moderate diet diversity. Informing the patient in advance about different orthodontic procedures encourages a positive attitude and facilitates patient cooperation. An interprofessional approach involving nutritionists can provide a holistic patient approach during orthodontic treatment.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"174-181"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589171/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355787","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

Corrosion Behavior of Nickel-Titanium Arch Wires Following the Use of Different Mouthwashes: An In Vivo Study. 使用不同漱口水后镍钛弓丝的腐蚀行为：体内研究。

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Turkish Journal of Orthodontics Pub Date : 2024-09-30 DOI: 10.4274/TurkJOrthod.2023.2022.182

Gonca Yıldırım, Feyza Eraydın, Didem Nalbantgil

{"title":"Corrosion Behavior of Nickel-Titanium Arch Wires Following the Use of Different Mouthwashes: An In Vivo Study.","authors":"Gonca Yıldırım, Feyza Eraydın, Didem Nalbantgil","doi":"10.4274/TurkJOrthod.2023.2022.182","DOIUrl":"10.4274/TurkJOrthod.2023.2022.182","url":null,"abstract":"Objective: The aim of this double-blind in vivo study was to compare the extent of corrosion on the surface of nickel-titanium (NiTi) wires in various mouthwashes.Methods: A total of 80 patients who received orthodontic treatment with as-received 0.016x0.022 inch NiTi wires were included in the study, and they were split into 4 groups. The first group used 0.05% of (225ppm F-) sodium fluoride (NaF) (Colgate Plax®) containing mouthwash, 21.6% alcohol (Listerine Cool Mint®) containing mouthwash, and 0.2% clorhexidine (CHX) (Klorhex®) containing mouthwash and the control group used drinking water with melt menthol as mouthwash. After 30 days of using mouthwash, the surfaces of NiTi wires were examined with atomic force microscopy (AFM), and surface roughness values were calculated.Results: Mouthwashes containing fluoride, essential oils, and CHX created higher surface roughness on NiTi wires than the control group. The floride-containing mouthwash group showed less corrosion than the CHX group, whereas there was no difference between the essential oil group. AFM images show supportive data with the results of the clinical study. The results were assessed using a 95% confidence interval and a significance level p<0.05.Conclusion: CHX, essential oil, and floride-containing mouthwashes cause corrosion of NiTi wires. Floride-containing mouthwash can be preferred over CHX mouthwash due to its lesser corrosion effect.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 3","pages":"168-173"},"PeriodicalIF":0.8,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589174/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355782","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

Assessment of Bone Thickness at the Infra Zygomatic Crest Region for Various Orthodontic Miniscrew Implant (OMSI) Insertion Angles: A Cone-Beam Computed Tomographic Study. 不同正畸微型螺丝种植体 (OMSI) 插入角度下的颧骨下缘骨厚度评估：锥形束计算机断层扫描研究。

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Turkish Journal of Orthodontics Pub Date : 2024-06-30 DOI: 10.4274/TurkJOrthod.2023.2023.14

Jitendra Sharan, Atul Bajoria, Ashok Kumar Jena, Pallawi Sinha, Arunachalam Shivakumar, Vineet Kumar Kamal, Anand Marya

{"title":"Assessment of Bone Thickness at the Infra Zygomatic Crest Region for Various Orthodontic Miniscrew Implant (OMSI) Insertion Angles: A Cone-Beam Computed Tomographic Study.","authors":"Jitendra Sharan, Atul Bajoria, Ashok Kumar Jena, Pallawi Sinha, Arunachalam Shivakumar, Vineet Kumar Kamal, Anand Marya","doi":"10.4274/TurkJOrthod.2023.2023.14","DOIUrl":"10.4274/TurkJOrthod.2023.2023.14","url":null,"abstract":"Objective: To evaluate the infrazygomatic crest (IZC) bone and develop guidelines for the optimum placement of orthodontic miniscrew implants (OMSIs) along the distobuccal root of the permanent maxillary first molar.Methods: Bone thickness of the IZC region of 50 young adults (25 males and 25 females) aged 18-30 years were evaluated using cone-beam computed tomography images. The infrazygomatic bone thickness along the distobuccal root of the permanent maxillary first molar was assessed at various insertion angles (40° to 75° i.r.t the maxillary occlusal plane) with an increment of 5°. Student's t-test was used to compare the IZC bone thickness and height at the orthodontic miniscrew insertion site for males and females on the right and left sides.Results: The bone thickness of the IZC region above the distobuccal root of the permanent maxillary first molar was estimated between 4.39±0.25 mm and 9.03±0.45 mm for insertion angles from 40° to 75° to the maxillary occlusal plane. The corresponding OMSI insertion heights were 17.71±0.61 mm to 13.69±0.75 mm, respectively, above the maxillary occlusal plane. There were statistically significant gender and side-wise variations in bone thickness at the IZC area and insertion height.Conclusion: The safe position for OMSI placement at the IZC was 13.69-16 mm from the maxillary occlusal plane with an insertion angle between 55° and 75°. These parameters provide the optimum placement of OMSIs along the distobuccal root of the permanent maxillary first molar.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 2","pages":"104-111"},"PeriodicalIF":0.8,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589249/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141477615","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

Investigation of Different Miniscrew Head Designs by Finite Element Analysis. 通过有限元分析研究不同的微型螺旋头设计

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Turkish Journal of Orthodontics Pub Date : 2024-06-30 DOI: 10.4274/TurkJOrthod.2023.2022.189

Samet Çıklaçandır, Gökçenur Gökçe Kara, Yalçın İşler

{"title":"Investigation of Different Miniscrew Head Designs by Finite Element Analysis.","authors":"Samet Çıklaçandır, Gökçenur Gökçe Kara, Yalçın İşler","doi":"10.4274/TurkJOrthod.2023.2022.189","DOIUrl":"10.4274/TurkJOrthod.2023.2022.189","url":null,"abstract":"Objective: To determine the optimum miniscrew head design in orthodontic treatments for primary stability and compare stress distribution on a representative bone structure.Methods: Miniscrews with cross heads, mushroom-shaped heads, button heads, bracket heads, and through-hole heads were compared using finite element analysis. Miniscrews, whose three-dimensional drawings were completed using the SolidWorks computer-aided software package, were inserted in the bone block. Orthodontic force was applied to the head, and stress distributions, strains, and total deformations were investigated.Results: The lowest von Mises stress of 5.67 MPa was obtained using the bracket head. On the other hand, the highest von Mises stress of 22.4 MPa was found with the button head. Through mesh convergence analysis, the most appropriate mesh size was determined to be 0.5 mm; approximately 230,000 elements were formed for each model.Conclusion: Because the need for low stress is substantial for the primary stability of the miniscrew, this study demonstrated that the bracket head miniscrew is the optimal head design. In addition, it is posited that the success rate of orthodontic anchorage treatments will increase when bracket head miniscrews are used.","PeriodicalId":37013,"journal":{"name":"Turkish Journal of Orthodontics","volume":"37 2","pages":"98-103"},"PeriodicalIF":0.8,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11589244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141477621","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