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Brazilian Journal of Biology = Revista... 2022Nanoparticles (NPs) are insoluble particles with a diameter of fewer than 100 nanometers. Two main methods have been utilized in orthodontic therapy to avoid microbial... (Review)
Review
Nanoparticles (NPs) are insoluble particles with a diameter of fewer than 100 nanometers. Two main methods have been utilized in orthodontic therapy to avoid microbial adherence or enamel demineralization. Certain NPs are included in orthodontic adhesives or acrylic resins (fluorohydroxyapatite, fluorapatite, hydroxyapatite, SiO2, TiO2, silver, nanofillers), and NPs (i.e., a thin layer of nitrogen-doped TiO2 on the bracket surfaces) are coated on the surfaces of orthodontic equipment. Although using NPs in orthodontics may open up modern facilities, prior research looked at antibacterial or physical characteristics for a limited period of time, ranging from one day to several weeks, and the limits of in vitro studies must be understood. The long-term effectiveness of nanotechnology-based orthodontic materials has not yet been conclusively confirmed and needs further study, as well as potential safety concerns (toxic effects) associated with NP size.
Topics: Anti-Bacterial Agents; Orthodontic Brackets; Orthodontics; Silicon Dioxide; Titanium
PubMed: 35195179
DOI: 10.1590/1519-6984.257070 -
Revue Medicale de Liege May 2020An increasing number of adult patients are seeking orthodontic treatment and several surgical and non-surgical methods have been developed to reduce the overall...
An increasing number of adult patients are seeking orthodontic treatment and several surgical and non-surgical methods have been developed to reduce the overall treatment time. Two randomized controlled clinical trials, performed in our University Hospital, demonstrated that the piezocision surgery - minimally invasive corticotomies - decreased the overall orthodontic treatment time by 43 % - effect during 4 to 6 months after the surgery - without any further clinical and radiological adverse effects. In addition, the use of a custom-made orthodontic system - brackets and arches - optimized the acceleration in the fine-tuning phase of orthodontic treatment. Finally, the combination of the two techniques is therefore relevant to maximize the reduction of the orthodontic treatment time. Fundamentally, our preclinical studies in rats have highlighted the biological phenomena underlying piezocision with an important bone demineralization and osteoclast recruitment associated with a predominant expression of the RANKL-OPG duo.
Topics: Adult; Animals; Humans; Orthodontics; Piezosurgery; Radiography; Randomized Controlled Trials as Topic; Rats; Tooth Movement Techniques
PubMed: 32496696
DOI: No ID Found -
The Angle Orthodontist Jul 2014To examine factors associated with treatment outcome satisfaction in a group of adolescent patients.
OBJECTIVES
To examine factors associated with treatment outcome satisfaction in a group of adolescent patients.
MATERIALS AND METHODS
One hundred and twenty patients (60 girls and 60 boys; mean age, 14.3 years; standard deviation [SD], 1.73 years) were consecutively recruited. The inclusion criteria for all patients were as follows: adolescents with a permanent dentition in need of orthodontic treatment and a treatment plan involving extractions (two or four premolars) followed by fixed appliances in both jaws. Questionnaire 1, concerning treatment motivation and expectations, was assessed prior to treatment start. Questionnaire 2 was assessed after active treatment and included questions about satisfaction with treatment outcome, quality of care and attention, and perceived pain and discomfort during active treatment.
RESULTS
One hundred and ten patients completed the trial (54 boys and 56 girls; mean age, 16.9 years; SD, 1.78 years). Median values for satisfaction with treatment outcome were generally high. There was a clear correlation (P ≤ .001) between satisfaction with treatment outcome and patients' perception of how well they had been informed and cared for during treatment. Pain and discomfort during treatment also strongly affected treatment satisfaction. Sex, treatment time, and Peer Assessment Rating index pre- and posttreatment as well as expectations for future treatment showed no correlation with treatment satisfaction.
CONCLUSIONS
Care and attention was the variable showing the highest correlation with satisfaction with treatment outcome. Patients' perceptions of pain and discomfort during treatment had an overall negative correlation with treatment satisfaction. Satisfaction with treatment outcome is a complex issue and requires further exploration in future research.
Topics: Adolescent; Attention; Attitude to Health; Dentist-Patient Relations; Extraoral Traction Appliances; Female; Follow-Up Studies; Humans; Male; Motivation; Orthodontic Anchorage Procedures; Orthodontic Appliances; Orthodontics, Corrective; Pain; Palatal Expansion Technique; Patient Care Planning; Patient Satisfaction; Quality of Health Care; Surveys and Questionnaires; Tooth Extraction; Treatment Outcome; Visual Analog Scale
PubMed: 24423202
DOI: 10.2319/093013-710.1 -
Stomatologija 2008External apical root resorption is an iatrogenic consequence of orthodontic treatment, although it may also occur in the absence of orthodontic treatment. Root... (Review)
Review
External apical root resorption is an iatrogenic consequence of orthodontic treatment, although it may also occur in the absence of orthodontic treatment. Root resorption causes root shortening and breaks the integrity of teeth arch and this is very important for successful orthodontic treatment. Orthodontics is probably the only dental specialty that actually uses the inflammatory process as a means of solving functional and aesthetic problems. They should know the risk factors of root resorption and do everything to reduce the occurrence of root resorption. The aim of our review is to find, classify and estimate factors, that can initiate and induce root resorption during orthodontic treatment. The articles from 2002 to 2007 in English related to the topic were identified. Twenty four articles were selected for data collection. The severity and degree of root resorption associated with orthodontic treatment are multifactorial, involving host and environmental factors. The review shows that root resorption is significantly correlated with treatment duration, fixed appliance treatment, tooth structure, individual susceptibility, type of orthodontic tooth movement.
Topics: Disease Susceptibility; Humans; Iatrogenic Disease; Orthodontic Appliances; Orthodontics, Corrective; Risk Factors; Root Resorption; Stress, Mechanical; Time Factors; Tooth; Tooth Movement Techniques
PubMed: 19001842
DOI: No ID Found -
American Journal of Orthodontics and... Jan 2022A key goal of orthodontic treatment with fixed appliances is alignment of the dentition, and this remains a commonly selected outcome in clinical studies investigating... (Meta-Analysis)
Meta-Analysis Review
INTRODUCTION
A key goal of orthodontic treatment with fixed appliances is alignment of the dentition, and this remains a commonly selected outcome in clinical studies investigating orthodontic tooth movement. This systematic review has evaluated treatment duration to achieve alignment of the mandibular dentition using fixed appliances.
METHODS
Systematic literature searches without restrictions were undertaken in 9 databases for randomized clinical trials (RCTs) assessing duration and rate of tooth alignment using fixed appliances with or without treatment adjuncts published up to January 2021. After duplicate study selection, data extraction, and risk of bias assessment according to Cochrane, random-effects meta-analyses of aggregate data, and individual patient data were conducted.
RESULTS
Thirty-five trials were included with 2258 participants (39% male; mean age 17.8 years), giving a pooled duration to achieve whole-arch alignment of the mandibular dentition of 263.0 days (4 trials; 95% confidence interval [CI], 186.7-339.4 days) and incisor alignment in the mandibular arch of 100.7 days (9 trials; 95% CI, 84.1-117.4 days). Surgical-assisted orthodontics was associated with reduced duration of incisor alignment: mean difference of 44.3 days less (4 trials; 95% CI, 20.0-68.9 days; P <0.001; high quality of evidence), whereas subgroup and meta-regression analyses indicated significant effects of baseline crowding and premolar extractions. Individual patient data analysis from 3 RCTs indicated that for each additional participant age year, whole-arch alignment of the mandibular dentition took 13.7 days longer (3 trials; 95% CI, 7.7-17.7 days; P <0.001) and for each additional mm of irregularity, 17.5 days more were needed (2 trials; 95% CI, 9.8-25.2 days; P <0.001).
CONCLUSIONS
Patient and treatment-related characteristics can significantly affect the duration of tooth alignment and should be taken into account both clinically and when designing trial outcomes. Future research studies investigating rates of orthodontic tooth alignment would benefit from adequate sample sizes and a more consistent methodology in outcome assessment. Data in this systematic review provides a basis for appropriate trial design for future RCTs investigating the rate of orthodontic tooth alignment with fixed appliances.
Topics: Adolescent; Female; Humans; Male; Orthodontic Appliances, Fixed; Tooth Movement Techniques
PubMed: 34794862
DOI: 10.1016/j.ajodo.2021.06.016 -
Dental Press Journal of Orthodontics 2017The aim of this systematic review was to evaluate the duration of the retention period in growing patients undergoing maxillary expansion and its relation with posterior... (Review)
Review
OBJECTIVE:
The aim of this systematic review was to evaluate the duration of the retention period in growing patients undergoing maxillary expansion and its relation with posterior crossbite stability.
METHODS:
Search strategies were executed for electronic databases Cochrane Library, Web of Science, PubMed and Scopus, which were completed on January 15, 2016. The inclusion criteria included randomized, prospective or retrospective controlled trials in growing subjects with posterior crossbite; treated with maxillary expanders; retention phase after expansion; post-retention phase of at least 6 months. The exclusion criteria were anterior crossbite, craniofacial anomalies, surgery or another orthodontic intervention; case reports; author's opinions articles, thesis, literature reviews and systematic reviews. The risk of bias of selected articles was assessed with Cochrane risk of bias tool for RCTs and Downs and Black checklist for non-RCTs.
RESULTS:
A total of 156 titles/abstracts was retrieved, 44 full-texts were examined, and 6 articles were selected and assessed for their methodological quality. The retention period after maxillary expansion ranged between 4 weeks and 16 months. Fixed (acrylic plate, Haas, Hyrax and quad-helix) or removable (Hawley and Hawley expander) appliances were used for retention.
CONCLUSIONS:
Six months of retention with either fixed or removable appliances seem to be enough to avoid relapse or to guarantee minimal changes in a short-term follow-up.
Topics: Databases, Factual; Humans; Malocclusion; Orthodontic Retainers; Orthodontics, Corrective; Palatal Expansion Technique; Randomized Controlled Trials as Topic; Recurrence
PubMed: 28658354
DOI: 10.1590/2177-6709.22.2.035-044.oar -
The Angle Orthodontist May 2020To investigate content of orthodontic-related videos on YouTube to improve the understanding of orthodontic patients' perceptions and treatment experiences.
OBJECTIVES
To investigate content of orthodontic-related videos on YouTube to improve the understanding of orthodontic patients' perceptions and treatment experiences.
MATERIALS AND METHODS
A systematic search was conducted on YouTube on March 20, 2018, and updated on August 4, 2019, to identify all relevant videos using search terms "orthodontic," "orthodontics," "braces," and "orthodontic braces." The data set was captured from YouTube Data API (Application Programming Interface) and stored in an Excel database using a query function written in Python. All videos captured were viewed and categorized by three independent dental investigators using thematic analysis. The top 100 videos (by view count) related to patients' treatment experience were further analyzed using discourse analysis.
RESULTS
A total of 600 orthodontic videos were screened, and 546 were included in the study. Six main themes were identified: (1) individual review of orthodontic treatment (45.8%, n = 250), (2) entertainment (19.8%, n = 108), (3) education (18.3%, n = 100), (4) advertisements (6.6%, n = 36), (5) time lapse of orthodontic treatment (5.3%, n = 29), and (6) do-it-yourself orthodontics (4.2%, n = 23). Of the top 100 videos related to patient's individual review of treatment, patients' main focuses were on pain (24%), problems with chewing and swallowing (12%), and adhesive removal (10%).
CONCLUSIONS
Orthodontic-related YouTube videos are diverse in nature. The most common video category was video providing an individual review of orthodontic treatment experience. Other popular video categories included entertainment, education, and advertisements. A range of do-it-yourself YouTube videos were also identified. YouTube may provide an opportunity for orthodontic professionals to disseminate health information.
Topics: Humans; Orthodontic Brackets; Orthodontics; Social Media; Video Recording
PubMed: 33378439
DOI: 10.2319/082019-542.1 -
Dental Press Journal of Orthodontics Sep 2019It is undeniable that extra-alveolar mini-implants anchorage has revolutionized Orthodontics. Correspondingly, the proper understanding of mini-implants biomechanics...
It is undeniable that extra-alveolar mini-implants anchorage has revolutionized Orthodontics. Correspondingly, the proper understanding of mini-implants biomechanics allowed to broaden the range of dental movements as never seen before in clinical practice. However, in order to produce better treatments, especially regarding the effects in occlusal plane, it is important to be aware of the numerous possibilities of applying force systems based on skeletal anchorage. Thus, this paper aims to address, by means of clinical cases, the application of biomechanics concepts that are extremely relevant to the proper employment of extra-alveolar mini-implants.
Topics: Dental Implants; Orthodontic Anchorage Procedures; Orthodontics
PubMed: 31508712
DOI: 10.1590/2177-6709.24.4.093-109.sar -
Dental Press Journal of Orthodontics 2023The aim of this prospective clinical study was to compare the clinical outcomes of three different fixed lingual retainers, in terms of effects on periodontal health and... (Randomized Controlled Trial)
Randomized Controlled Trial
OBJECTIVE
The aim of this prospective clinical study was to compare the clinical outcomes of three different fixed lingual retainers, in terms of effects on periodontal health and success rate.
METHODS
Forty five patients aged 13 to 25 years were randomly assigned into three groups, using bonded upper and lower lingual retainers. The study groups were as follows: Group 1- Bond-A-Braid®, Group 2- everStick® ORTHO, Group 3- Super-Splint. The follow-up appointments were performed two weeks (Baseline=T0), one month (T1), three months (T2), and six months (T3) after the application of retainers. Plaque Index (PI), Gingival Index (GI), Probing Depth (PD), Bleeding in Probing (BOP) and Retainer Failure were assessed at each appointment.
RESULTS
The everStick Ortho group showed significantly lower PI values on the upper-lower lingual side after three (p=0.008) and six (p=0.001) months. The everStick Ortho group had significantly lower upper lingual (GI) levels after six months, and lower lingual side levels after one month. The Super-Splint group showed significantly lower PD values on the upper lingual side after six months. The everStick Ortho group presented significantly lower BOP levels after six months on the upper lingual side. No significant differences between the groups (p>0.05) in terms of retainer failure were found.
CONCLUSIONS
The everStick Ortho group presented better results in terms of periodontal health. The failure rates of the retainers were similar.
Topics: Humans; Orthodontic Retainers; Prospective Studies; Periodontal Index; Orthodontic Appliances, Fixed; Orthodontic Appliance Design
PubMed: 36790247
DOI: 10.1590/2177-6709.27.6.e222154.oar -
The Angle Orthodontist Apr 1968
Topics: Child; Female; Humans; Male; Orthodontic Appliances; Orthodontics, Corrective
PubMed: 5239124
DOI: 10.1043/0003-3219(1968)038<0121:TM>2.0.CO;2