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Dermatitis : Contact, Atopic,... 2018
Topics: Adolescent; Dental Cements; Dermatitis, Allergic Contact; Female; Humans; Orthodontic Appliances; Patch Tests
PubMed: 30346321
DOI: 10.1097/DER.0000000000000423 -
Journal of Clinical Orthodontics : JCO May 2015
Topics: Computer-Aided Design; Humans; Orthodontic Appliance Design; Orthodontic Appliances; Orthodontic Retainers; Printing, Three-Dimensional
PubMed: 26105181
DOI: No ID Found -
The Functional Orthodontist 2002
Topics: Contraindications; Crowns; Dental Arch; Dental Soldering; Humans; Incisor; Jaw Relation Record; Malocclusion, Angle Class II; Mandible; Maxilla; Molar; Open Bite; Orthodontic Appliance Design; Orthodontic Appliances, Functional; Orthodontic Brackets; Orthodontic Wires; Temporomandibular Joint Disorders; Time Factors; Torque
PubMed: 12192852
DOI: No ID Found -
BMC Oral Health Aug 2023Many orthodontic patients request dental bleaching during orthodontic treatment to achieve a faster aesthetic resolution, however, no attention has been paid to the... (Randomized Controlled Trial)
Randomized Controlled Trial
BACKGROUND
Many orthodontic patients request dental bleaching during orthodontic treatment to achieve a faster aesthetic resolution, however, no attention has been paid to the inflammatory processes that can occur when both therapies are indicated together. So, this clinical trial evaluated the inflammatory parameters and color alterations associated with dental bleaching in patients wearing a fixed orthodontic appliance.
METHODS
Thirty individuals aged between 18 and 40 years were equally and randomly allocated into three groups: FOA (fixed orthodontic appliance), BLE (dental bleaching), and FOA + BLE (fixed orthodontic appliance + dental bleaching). The orthodontic appliances and the bleaching procedures were performed in the maxillary premolars and molars. For dental bleaching a 35% hydrogen peroxide was used. The gingival crevicular fluid (GCF) and nitric oxide (NO) levels were evaluated at different time-points. Color evaluation was performed using an Easyshade spectrophotometer at baseline (FOA, FOA + BLE, BLE), one month after (FOA + BLE) and 21 days after appliance removing (FOA + BLE and FOA groups), in each tooth bleached. The ANOVA and Tukey's tests, with a significance level of 5%, were used for statistical analysis.
RESULTS
The GCF volume in the FOA + BLE and FOA groups significantly increased at the time points evaluated (p < 0.001); however, this did not occur in the BLE group (p > 0.05). On the other hand, NO levels significantly decreased during dental bleaching with or without fixed orthodontic appliances (FOA + BLE and BLE groups; p < 0.05), while no significant changes were observed in the FOA group (p > 0.05). Significant changes in color were observed in the FOA + BLE and BLE groups compared to in the FOA group (p < 0.01). However, the presence of fixed orthodontic appliance (FOA + BLE) negatively affected the bleaching efficacy compared to BLE group (p < 0.01).
CONCLUSIONS
Dental bleaching did not increase the inflammatory parameters in patients wearing fixed orthodontic appliance. However, in the presence of orthodontic appliances, the bleaching efficacy was lower than that of bleaching teeth without orthodontic appliances.
TRIAL REGISTRATION
RBR-3sqsh8 (first trial registration: 09/07/2018).
Topics: Humans; Adolescent; Young Adult; Adult; Orthodontic Appliances, Fixed; Orthodontic Appliances; Patients; Hydrogen Peroxide; Dental Care; Nitric Oxide
PubMed: 37641077
DOI: 10.1186/s12903-023-03301-7 -
American Journal of Orthodontics and... Mar 2020Orthodontic patients are at an increased risk for developing caries. Dental caries is a biofilm-mediated disease, with mutans streptococci (MS) as the primary etiologic...
INTRODUCTION
Orthodontic patients are at an increased risk for developing caries. Dental caries is a biofilm-mediated disease, with mutans streptococci (MS) as the primary etiologic bacterial group. It has been suggested that persister cells (PCs), a subset of cells within the biofilm, contribute to the chronic infectious nature of dental caries. PC formation can be induced by environmental stressors such as orthodontic treatment. The aim of this study was to quantify MS, aerobic and facultative anaerobe bacterial PC proportions from plaque samples during the initial stage of orthodontic treatment. This study is the first to analyze the role of PCs in a population of patients highly susceptible to caries, that is, patients undergoing orthodontic treatment.
METHODS
Plaque samples were collected from 17 participants (11 males and 6 females; age range: 11-18 years) before and 1 month after insertion of fixed orthodontic appliances. Percentages of MS and PCs were determined with selective media and a classical persister microbial assay, respectively.
RESULTS
There was a statistically significant decrease in %MS (P = 0.039) but no statistically significant difference in %PCs (P = 0.939) after 1 month of orthodontic appliance placement.
CONCLUSION
Our study illustrated the technical feasibility of analysis of PCs in plaque samples of patients during orthodontic treatment and revealed that PC formation during orthodontic treatment is highly variable across individuals.
Topics: Adolescent; Child; Dental Caries; Dental Plaque; Female; Humans; Male; Orthodontic Appliances; Orthodontic Appliances, Fixed; Saliva; Streptococcus mutans
PubMed: 32115117
DOI: 10.1016/j.ajodo.2019.04.033 -
The Journal of Contemporary Dental... Jul 2021To carry out comparison of apical root resorption (ARR) in the fixed orthodontic appliance and clear aligners with the help of cone-beam computed tomography (CBCT)...
AIM AND OBJECTIVE
To carry out comparison of apical root resorption (ARR) in the fixed orthodontic appliance and clear aligners with the help of cone-beam computed tomography (CBCT) imaging.
METHODS AND MATERIALS
The study was conducted on 576 roots in 110 patients. These patients were divided into two groups such that each group consisted of 55 patients. A total of 288 roots were analyzed in each group. One group consisted of patients treated with the conventional fixed orthodontic appliance. Another group consisted of patients treated with clear aligners. Radiographic images were collected with the help of CBCT for each patient. One image was collected before treatment while another image was collected after treatment. The length of the root of the anterior tooth was measured with the help of CBCT images. The ARR was calculated for each tooth by obtaining the difference between the length of the root measured before orthodontic treatment and after orthodontic treatment. The data were recorded, and statistical analysis was carried out with the help of the paired test and Chi-square test to compare ARR between the two groups.
RESULTS
The ARR was more in patients who were treated with fixed orthodontic treatment than in those patients who were treated with clear aligners. The mean value of ARR in fixed orthodontic appliances was 1.51 ± 1.34 mm, whereas the mean value of ARR in clear aligners was 1.12 ± 1.34 mm. The severity of ARR in the clear aligners group (on average) was significantly less than that in the fixed appliances group (on average). It was found that ARR in each individual's tooth included in the study was more in case of the fixed orthodontic appliance as compared with clear aligners ( <0.001).
CONCLUSION
From the present study, it can be concluded that the amount of resorption at the root apex is less among patients who undergo treatment using clear aligners as compared with those treated with conventional fixed orthodontics appliances.
CLINICAL SIGNIFICANCE
ARR found in the orthodontic treatment is a process that causes loss of hard dental tissues such as dentine and cementum at the root apex. Fixed orthodontic appliances are most common method of orthodontic treatment. However, clear aligners are also used commonly for orthodontic treatment.
Topics: Cone-Beam Computed Tomography; Humans; Orthodontic Appliances, Fixed; Orthodontic Appliances, Removable; Research Design; Root Resorption
PubMed: 34615781
DOI: No ID Found -
American Journal of Orthodontics and... Oct 2022This study evaluated the factors influencing potential orthodontic patients' choice between an orthodontist, general dentist (GD), and direct-to-consumer (DTC) aligners...
INTRODUCTION
This study evaluated the factors influencing potential orthodontic patients' choice between an orthodontist, general dentist (GD), and direct-to-consumer (DTC) aligners for their treatment and their choice of orthodontic appliance type and explored their motivating factors for seeking orthodontic treatment and preference for appliance type.
METHODS
An electronic survey was administered to 330 Canadian adults to determine demographic background, choice of the orthodontic treatment provider, the preferred mode of treatment, orthodontic issues they wished to address, and motivation for treatment.
RESULTS
When participants were asked their preference in provider type, 49.4% of participants selected an orthodontist, 19.2% would follow the recommendation of their GD, 18.9% selected a GD, and 12.5% selected DTC aligners. Younger adult participants (P = 0.037) and those living in metropolitan areas (P = 0.0005) were significantly more likely to select an orthodontist than GD or DTC aligners. When asked about their preference in the mode of orthodontic treatment, 45.4% selected clear braces, 34.1% selected clear aligners, 14.3% selected metal braces, and 6.1% indicated they currently have no interest in orthodontic treatment. Older participants (P = 0.0005) and those in moderate-sized population centers (P = 0.001) were significantly more likely to select clear braces or aligners.
CONCLUSIONS
Adults in Canada have a high preference for orthodontic treatment performed by orthodontists, especially among younger participants and those in metropolitan areas. Although all ages preferred clear braces, younger adult participants tended to be more open to metal braces, whereas older participants' preference for clear braces was the strongest. Preference for clear aligners is positively correlated to increased community size.
Topics: Adult; Canada; Humans; Orthodontic Appliances, Fixed; Orthodontic Brackets; Orthodontists; Patient Preference
PubMed: 35780019
DOI: 10.1016/j.ajodo.2021.04.035 -
The Angle Orthodontist Mar 2022To investigate the masticatory (masticatory performance, bite force, swallowing threshold, muscle activity, and questionnaires) and nutritional (nutrient intake) impacts... (Review)
Review
OBJECTIVES
To investigate the masticatory (masticatory performance, bite force, swallowing threshold, muscle activity, and questionnaires) and nutritional (nutrient intake) impacts of the activation and/or installation of different orthodontic appliances (fixed labial, lingual appliances, and clear aligners).
MATERIALS AND METHODS
Six electronic databases and gray literature were searched (up to May 2021) for relevant studies evaluating mastication and nutrition after activation/installation of orthodontic appliances. This review followed PRISMA guidelines and was registered at PROSPERO (CRD42020199510). The risk of bias (RoB 2 and ROBINS-I) and evidence quality Grading of Recommendations Assessment, Development, and Evaluation were analyzed.
RESULTS
Of 4226 recorded and screened, 15 studies were finally included. Masticatory performance (standardized mean difference [SMD]: 1.069; 95% coefficient interval [CI]: 0.619 to 1.518) and bite force (SMD: -2.542; 95% CI: -4.867 to -0.217) reduced in the first 24 to 48 hours of fixed labial appliance installation/activation, but they were both normalized after 30 days (P > .05). The swallowing threshold remained constant (P > .05). Nutritional intake was rarely reported but showed copper (P = .002) and manganese (P = .016) reductions, with higher calorie and fat intake (P < .05). Lingual appliances impacted chewing more than labial, and clear aligner wearers reported fewer chewing problems (P < .001). Low to very low levels of evidence were found.
CONCLUSIONS
Based on low to very low levels of evidence, mastication was reduced during the first 24 to 48 hours of fixed labial appliance activation/installation, but it was transitory (up to 30 days). Due to insufficient data, the nutritional impact of orthodontic appliances was not conclusive.
Topics: Bite Force; Mastication; Orthodontic Appliances; Orthodontic Appliances, Fixed; Tongue
PubMed: 34878525
DOI: 10.2319/061221-469.1 -
Dental Materials Journal Jul 2022Recently, the number of patients who request esthetically pleasing aligner-type orthodontic appliances (referred to as aligners) has been increasing. However, the...
Recently, the number of patients who request esthetically pleasing aligner-type orthodontic appliances (referred to as aligners) has been increasing. However, the orthodontic forces generated by these aligners are still unknown. This study aimed to verify whether the orthodontic force in aligners can be estimated by measuring near infrared 2D birefringence, and to visualize the orthodontic force. We measured the mechanical and photoelastic properties of transparent orthodontic thermoplastic specimens to correlate the optical retardation with the applied load. The results confirmed equivalence between the mechanical properties and the photoelasticity. In addition, the 2D retardation distribution that occurred when stress was applied to the sample was mapped and visualized. This indicates that it is possible to estimate and visualize the orthodontic force using the retardation obtained by near infrared 2D birefringence measurement.
Topics: Humans; Orthodontic Appliance Design; Orthodontic Appliances; Orthodontic Appliances, Removable
PubMed: 35545510
DOI: 10.4012/dmj.2021-330 -
British Dental Journal Jun 2021Bonded retainers may play an important role in reducing unwanted tooth movements following orthodontic treatment, with an open-ended perspective on retention now...
Bonded retainers may play an important role in reducing unwanted tooth movements following orthodontic treatment, with an open-ended perspective on retention now established. The importance of planning for bonded retention is emphasised, with key principles in minimising failure rates as well as wire and adhesive options discussed. Approaches to preparation of the wire and the teeth, the bonding process, as well as variations in retainer design, and means of preventing problems and undertaking repairs in order to achieve predictable fixed retention in the long term are also outlined.
Topics: Dental Bonding; Orthodontic Appliance Design; Orthodontic Appliances, Fixed; Orthodontic Retainers
PubMed: 34117425
DOI: 10.1038/s41415-021-2936-9