APOS Trends in Orthodontics最新文献

{"title":"Accelerated and hybrid orthodontic treatment using a combination of 2D lingual appliance and in-house aligner: An anterior cross-bite and TMD case report after 1-year follow-up","authors":"Viet Hoang, Thao Thi Nhu Dang, My Khanh Nguyen, Phuoc Hong Tran","doi":"10.25259/apos_22_2024","DOIUrl":"https://doi.org/10.25259/apos_22_2024","url":null,"abstract":"Anterior cross-bite and Class I malocclusion are common in orthodontics. There are various methods to treat this condition. In this case report, we will be discussing our approach to treating anterior cross-bite in an adult patient. We used hybrid treatment by 2D lingual-fixed appliance and in-house clear aligner to provide esthetic orthodontic treatment. In addition, we utilized 3D simulation to ensure the accuracy of our treatment plan and mechanics. In this article field, we present the case of a 23-year-old woman who came to us with complaints of anterior cross-bite, smile esthetics, and her profile. On examination, we found that she had a skeletal Class I malocclusion and anterior cross-bite on the left side with erosion in her upper left incisors. Although she had good occlusion, there was some minor crowding in her upper and lower teeth. After conducting a 3D simulation, we decided to use a 2D lingual-fixed appliance on her upper teeth and an in-house aligner on her lower teeth. We chose this treatment plan because it was suitable, efficient, and cost-effective. However, after 2 months of treatment, the patient developed TMD, and her mandible shifted to the left. As a result, she had an X-bite on the right side. To address this issue, we removed the 2D appliance and switched to an in-house aligner for both upper and lower teeth. After 2 more months with the aligner, we noticed that the patient had occlusal interference in her left lateral incisor and erosion on this tooth. To fix this problem, we filled the tooth (22) and maintained the position of the lower teeth. We continued the finishing stage with the in-house aligner on both the upper and lower teeth. After 8 months of treatment, the case was successfully completed, and the patient no longer had TMD. Using a 2D lingual appliance and in-house aligner is an effective method for treating anterior cross-bites. Careful TMD control is essential in orthodontic treatments.","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141929328","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}

{"title":"Comparison of coating stability and surface characterization of different esthetic NiTi arch wires – An in vivo study","authors":"Syed Shahid Hilal, P. Teja, S. Mittal, S. Teja, Stuti Gulati, Rohini Sharma","doi":"10.25259/apos_75_2024","DOIUrl":"https://doi.org/10.25259/apos_75_2024","url":null,"abstract":"\u0000\u0000The article aimed to compare the coating stability and surface characterization of different esthetic nickel-titanium (NiTi) archwires.\u0000\u0000\u0000\u0000A total of 48 esthetic NiTi archwires were categorized into four groups based on the type of coating material that was selected and studied (Groups: I. Epoxy coated, II. Polymer coated, III. Teflon coated, and IV. Rhodium coated). These wires were ligated in patients undergoing fixed mechanotherapy in the department. The surface details and coating stability were studied in the wires removed from patient’s mouth after 21 days using 3D profilometer, scanning electron microscope (SEM), and stereomicroscope.\u0000\u0000\u0000\u0000A maximum percentage of coating loss was observed in Group II (epoxy coated) and the minimum in Group III (polymer coated). Maximum surface roughness was observed in Group II (epoxy coated) and minimum in Group III (polymer coated).\u0000\u0000\u0000\u0000The average coating thickness of as received wires was observed to be 0.002” in dimension. All the wires had low esthetic values, as they presented a non-durable coating after oral exposure. On visual examination of SEM image, all four group esthetic wires showed variations ranging from microcracks and large sized striations to overall destruction of coating regularity.\u0000","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141928152","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}

{"title":"Clinical effect of low-level laser therapy on pain perception after placement of initial orthodontic archwires","authors":"Ramy El Shahawy, Hanady Mohamed Sameeh, Youssef Sedky, Waleed Refaat El Nagar","doi":"10.25259/apos_33_2024","DOIUrl":"https://doi.org/10.25259/apos_33_2024","url":null,"abstract":"\u0000\u0000This study evaluated the clinical effect of low-level laser therapy (LLLT) on pain perception after placement of initial orthodontic archwires.\u0000\u0000\u0000\u0000Forty-eight orthodontic patients were selected and randomly divided according to exposure to LLLT into two equal groups: Group 1 (Control group) Included 24 patients who were not subjected to any laser therapy, and Group 2 (Laser group), Included 24 patients who were subjected to LLLT. Pain perception was investigated for all patients after 6 h, 2nd day, 3rd day, and 7th day through a visual analog scale (VAS) with 0 indicating no pain and 10 indicating intolerable pain. All data were collected, tabulated, and statistically analyzed.\u0000\u0000\u0000\u0000There was a statistically significant difference between the laser group and the control group. According to VAS readings, the laser group showed lower means of pain scores than the control group .\u0000\u0000\u0000\u0000From the present study, the following could be concluded: (1) Diode laser using 940 nm wavelength with the used parameters showed positive results in reducing pain severity in the early stages of orthodontic treatment. (2) LLLT can have better biomodulating outcomes in promoting long-lasting analgesic action during the period of greatest pain sensitivity.\u0000","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141798583","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}

{"title":"The perception of facial esthetics with regard to different buccal corridors and facial proportions","authors":"Babak Sayahpour, Sara Eslami, Brenda Schulz, Mauricio Gonzalez Balut, Nicolas Plein, V. Grassia, L. Nucci","doi":"10.25259/apos_105_2024","DOIUrl":"https://doi.org/10.25259/apos_105_2024","url":null,"abstract":"\u0000\u0000The aim of the study was to examine the effects of buccal corridor width on the perception of facial esthetics and to determine the ideal buccal corridor size. It also aimed to determine the influence of facial shape or gender on the ideal size of buccal corridors and whether there are differences in perception between laypeople and dental professionals (LPs and DP).\u0000\u0000\u0000\u0000One female and one male study model were selected and photographed in portrait format. Using Photoshop, a total of 30 digitally manipulated images were generated from the original photographs, representing five different buccal corridor sizes (2%, 10%, 15%, 22%, and 28%) and three different facial shapes (dolichol-, normo-, and brachyfacial). Two groups of LP and DP evaluated the images. Each group consisted of 20 male and 20 female participants with a mean age of 30.33 ± 5.19 (LP) and 32.03 ± 4.43 (DP). Descriptive statistics, Wilcoxon sign-rank test, Mann–Whitney U-test, and Bonferroni correction were then used to assess the significance of the data, which identify differences between genders and the impact of facial form.\u0000\u0000\u0000\u0000The buccal corridor width was found to influence the facial and smile esthetics. The 2% buccal corridor proved to be the best-rated size and stood out from the other sizes in most face shapes with a significance of P < 0.004. A difference in the evaluation between the DP and LP could not be found.\u0000\u0000\u0000\u0000Large buccal corridors seem to affect facial esthetics negatively. The results of the present study suggest an ideal value of the buccal corridor at 2%.\u0000","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141798416","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}

{"title":"Difference in acceptance and satisfaction perception on the use of Hawley and vacuum-formed retainers among post-orthodontic patients","authors":"Krisnawati E Tarman, F. Jazaldi, Andina Alia Latief, B. Soegiharto","doi":"10.25259/apos_60_2024","DOIUrl":"https://doi.org/10.25259/apos_60_2024","url":null,"abstract":"\u0000\u0000It has been observed that using a retainer during the retention phase of orthodontic treatment can result in various patient perceptions; however, only limited research exists concerning it. Therefore, the present research studies and analyzes the differences in acceptance and satisfaction perception between patients who use two types of removable retainers: Hawley retainers (HRs) and vacuum-formed retainers (VFRs).\u0000\u0000\u0000\u0000This research comprised 80 participants (n per group = 40). Eligible individuals who had finished treatment between 6 months and 5-years-prior and met the inclusion criteria were contacted to partake in this study. The participants were asked to complete a digital-based questionnaire consisting of seven questions. Each patient was asked the questions twice, once for maxillary and once for mandibular retainers. The visual analog scale was used to measure their responses. Blinding was implemented to minimize potential bias during data analysis.\u0000\u0000\u0000\u0000Statistically significant differences were found in the speaking ability and positive comments received with maxillary retainer in place. Statistically significant differences were not found in the perception of adaptation, cleaning ability, negative comments received, and overall retainers’ acceptance and patients’ satisfaction with both retainers in place, as well as the speaking ability and positive comments received with the mandibular retainer. During the study, no harm was observed in any of the patients.\u0000\u0000\u0000\u0000VFRs cause less speech difficulty and elicit more positive comments on the maxilla than HRs. No significant differences were found between HRs and VFRs concerning the perception of adaptation, cleaning ability, negative comments received, and overall retainers’ acceptance and patients’ satisfaction with both retainers in place. Moreover, no differences were found between patients’ speaking ability and positive comments received with the mandibular retainer.\u0000","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141675572","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}

{"title":"Autism spectrum disorder and compliance with a removable orthodontic functional appliance: A case report","authors":"Juliza Md Lepi, Nik Mukhriz Nik Mustapha","doi":"10.25259/apos_12_2024","DOIUrl":"https://doi.org/10.25259/apos_12_2024","url":null,"abstract":"Autism Spectrum Disorder (ASD) is a multifaceted developmental disability that originates from a neurological disorder, leading to difficulties in the development of social interaction and communication skills. Consequently, this poses a challenge in the provision of oral health care. We report a case of a 13-year-old male with ASD who was concerned about “sticking out upper front teeth.” The patient presented with a Class II Division 1 incisor relationship on a Class 2 skeletal base with retrognathic mandible. The malocclusion was complicated by spacing in the upper and lower arches, proclined upper labial segment, increased overjet 12mm, overbite 90% complete to teeth, and incompetent lip with lower lip trap. The canine relationship was Class II ½ unit bilaterally, and the molar relationship was Class II ½ unit on the right and Class II ¾ unit on the left. The IOTN score was 5a for dental health and 9 for aesthetics. Growth modification to encourage mandibular growth, using a removable Twin Block appliance. The patient displayed excellent compliance with the appliance and effectively addressed his concerns while boosting his self-esteem. By understanding and addressing the unique needs of patients with ASD in orthodontic treatment, patient’s comfort and overall experience can be enhanced along with the likelihood of a successful treatment outcome. Customized treatment plans that respect sensory sensitivities and communication preferences pave the way for a more positive orthodontic journey for individuals with ASD, ultimately leading to enhanced dental well-being and bolstered self-assurance in one’s smile.","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141676505","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}

{"title":"Three-dimensional evaluation of dentoalveolar and skeletal transverse changes between rapid maxillary expansion and slow maxillary expansion in growing subjects – A systematic review and meta-analysis","authors":"Abirami Selvaraj, A. George, Prasanna Arvind","doi":"10.25259/apos_180_2022","DOIUrl":"https://doi.org/10.25259/apos_180_2022","url":null,"abstract":"To systematically compare dentoalveolar and skeletal changes of RME and SME using same expanders with different activation protocols via 3D radiographs. Pubmed, Scopus, LILACS, Cochrane Library and Google Scholar were searched till April 2022. Randomized control trials (RCTs) were included. Statistical analysis performed with Tau2 test to evaluate heterogeneity in the included studies. Risk of bias (RoB) was evaluated using Cochrane RoB 2.0 tool. 5 RCTs were included. RoB revealed one study have low risk of bias and others have some concerns. Meta-analysis showed that both RME and SME displayed significant intermolar expansion (p>0.05) with RME showing significantly greater molar tipping. Random effects meta-analysis performed for maxillary intermolar distance at cuspal [SMD=0.23(95% CI=-0.50 to 0.95)] and alveolar level [SMD=0.76(95% CI=-0.57 to 2.09)] revealed no significant difference between groups with low reliability. RME showed significantly increased posterior skeletal nasal width [P value=0.007, SMD= 0.95(95% CI= 0.25 to 1.64)] with low heterogeneity (I2=24%) and good reliability. Greater molar tipping, determined using buccolingual inclination can be noted in RME. Increase in effective arch width and greater bodily translation was observed in SME. Utilizing the correct expansion protocol in the relevant clinical scenarios can prevent adverse periodontal complications during expansion and provide greater post-expansion stability.","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141674426","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}

{"title":"Deep learning models to classify skeletal growth phase on 3D radiographs","authors":"N. Ameli, M. Lagravère, Hollis Lai","doi":"10.25259/apos_73_2024","DOIUrl":"https://doi.org/10.25259/apos_73_2024","url":null,"abstract":"\u0000\u0000Cervical vertebral maturation (CVM) is widely used to evaluate growth potential in orthodontics. This study aims to develop an artificial intelligence (AI) algorithm that automatically predicts the CVM stages in terms of growth phases using cone-beam computed tomography images.\u0000\u0000\u0000\u0000A total of 30,016 slices were obtained from 56 patients with an age range of 7–16 years. After cropping the region of interest, a convolutional neural network (CNN) was built to classify the slices based on the presence of a good vision of vertebrae. The output was used to train another model capable of categorizing the slices into phases of growth, which were defined as Phase I (prepubertal), Phase II (circumpubertal), and Phase III (postpubertal). After training the model, 88 new images were used to evaluate the performance of the model using multi-class classification metrics.\u0000\u0000\u0000\u0000The average classification accuracy of the first and second CNN-based deep learning models was 96.06% and 95.79%, respectively. The multi-class classification metrics also showed an overall accuracy of 84% for predicting the growth phase in unseen data. Moreover, Phase I ranked the highest accuracy in terms of F1-score (87%), followed by Phase II (83%) and Phase III (80%).\u0000\u0000\u0000\u0000Our proposed models could automatically detect the C2–C4 vertebrae and accurately classify slices into three growth phases without the need for annotating the shape and configuration of vertebrae. This will result in the development of a fully automatic and less complex system with reasonable performance.\u0000","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141677161","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}

{"title":"Orthodontic treatment of a patient with pycnodysostosis","authors":"Peter Ngan, Dami Kim, Guoqiang Guan","doi":"10.25259/apos_56_2024","DOIUrl":"https://doi.org/10.25259/apos_56_2024","url":null,"abstract":"Pycnodysostosis (PYCD) is a rare lysosomal storage disease of the bone caused by a mutation in the gene that codes the enzyme cathepsin K. Patients diagnosed with PYCD demonstrate certain physical characteristics, including deformity in craniofacial structure for which patients seek orthodontic treatments to improve occlusal functions and esthetics. In addition, growth hormone therapy is indicated for these patients due to their short stature. This article is the first to report on the successful completion of the non-surgical orthodontic treatments of a patient diagnosed with PYCD. The patient was treated in two phases due to a waiting period for growth hormone therapy. However, superimposition of pre-and post-treatment radiographs showed no evidence of accelerated skeletal growth at the conclusion of the hormonal therapy. The rate of orthodontic tooth movement for Phase I with conventional appliance and Phase II treatment with clear aligners was similar with healthy individuals treated with four premolars extraction. Surgical exposure of the impacted permanent molars was contraindicated as no posterior dentition was available as anchorage for molar uprighting. Extraction of impacted molars in the mandible was performed with care due to the high risk of fracture. Orthognathic surgery treatment carries an increased risk of osteomyelitis for these patients due to dense bone with poor vascularity. Therefore, non-surgical camouflage orthodontic treatment can be the best option to achieve functional occlusion for patients diagnosed with PYCD.","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141673825","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}

{"title":"Physical and chemical changes of clear aligners after thermoforming and intraoral exposure","authors":"K. Dalaie, Katayoun Talebi Rafsanjan, Hanieh Nojehdehian, Zahra Namazi","doi":"10.25259/apos_169_2023","DOIUrl":"https://doi.org/10.25259/apos_169_2023","url":null,"abstract":"\u0000\u0000This study assessed the physical and chemical changes of clear aligners after thermoforming and intraoral exposure.\u0000\u0000\u0000\u0000This ex vivo study evaluated raw sheets, thermoformed sheets, and aligners used for 2 weeks from two commercial brands of Erkodur and Shinseki (n = 8 in each group). The surface hardness (by the Vickers hardness test), thickness (by a digital caliper), and glass transition temperature (Tg) (by differential scanning calorimetry) of the specimens were measured, and they underwent X-ray diffraction (XRD) to assess their degree of crystallinity and attenuated total reflectance-Fourier-transform infrared spectroscopy (ATR-FTIR) for analysis of their molecular composition. Data were analyzed by one-sample, paired and independent t-tests, and Mann–Whitney U and Wilcoxon signed-rank tests (alpha = 0.05).\u0000\u0000\u0000\u0000The XRD and ATR-FTIR spectra of Erkodur and Shinseki aligners matched those of polyethylene terephthalate glycol polymer and did not change after thermoforming or intraoral exposure. Unlike intraoral exposure (P > 0.05), thermoforming significantly decreased the hardness of both brands of aligners (P < 0.05). Intraoral exposure significantly decreased the thickness of Erkodur aligners at some points and significantly increased the thickness of Shinseki aligners (P < 0.05). Thermoforming significantly decreased the Tg of both brands of aligners (P < 0.05). Intraoral exposure significantly decreased the Tg of Erkodur and increased the Tg of Shinseki aligners (P = 0.000).\u0000\u0000\u0000\u0000Erkodur and Shinseki aligners showed high chemical and structural stability after thermoforming and 2 weeks of intraoral exposure. However, thermoforming affected the thermal and physical properties of both brands of aligners. Erkodur aligners had higher dimensional stability than Shinseki aligners.\u0000","PeriodicalId":42593,"journal":{"name":"APOS Trends in Orthodontics","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141338950","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}