scholarly journals External Bleaching Effect on the Color and Luminosity of Inactive White-Spot Lesions after Fixed Orthodontic Appliances

2007 ◽  
Vol 77 (4) ◽  
pp. 646-652 ◽  
Author(s):  
Michael Knösel ◽  
Rengin Attin ◽  
Klaus Becker ◽  
Thomas Attin
Keyword(s):  
White Spot ◽  
Orthodontic Appliances ◽  
White Spot Lesions ◽  
Color Matching ◽  
Orthodontic Appliance ◽  
Anterior Teeth ◽  
Fixed Orthodontic Appliances ◽  
Tooth Surfaces ◽  
Initial Lesions ◽  
Fixed Orthodontic Appliance

Abstract Objective: To evaluate the effect of external bleaching on the color and luminosity of inactive white-spot lesions (WSLs) present after fixed orthodontic appliance treatment as means for achieving color matching of the WSLs with adjacent tooth surfaces. Materials and Methods: Ten patients with inactive WSLs after therapy with fixed orthodontic appliances were selected. At baseline, the lightness of maxillary incisors and canines was assessed with a colorimeter. Color determinations were performed in the area of the initial lesions (F1) and at adjacent, sound enamel areas (F2). Then, anterior teeth were bleached once with a bleaching gel for 60 minutes. After a break of 14 days, in-office bleaching was followed by a 2-week home bleaching period with daily home bleaching for 1 hour. After this, color determinations were repeated. Additionally, patients were asked to fill out a questionnaire to provide information about their degree of contentment with the treatment. Results: The lightness values of both the F1 and F2 regions were significantly higher after bleaching as compared with baseline. F2 L-values increased significantly more as compared with F1, indicating a better color matching of these two areas in comparison with baseline. All patients were satisfied with the outcome of the bleaching therapy. Conclusion: External bleaching is able to satisfactorily camouflage WSLs visible after therapy with fixed orthodontic appliances.

Risk factors for incidence and severity of white spot lesions during treatment with fixed orthodontic appliances

2010 ◽  
Vol 138 (2) ◽  
pp. 188-194 ◽  
Author(s):  
Joshua A. Chapman ◽  
W. Eugene Roberts ◽  
George J. Eckert ◽  
Katherine S. Kula ◽  
Carlos González-Cabezas
Keyword(s):  
Risk Factors ◽  
White Spot ◽  
Orthodontic Appliances ◽  
White Spot Lesions ◽  
Fixed Orthodontic Appliances

scholarly journals The effect of fixed orthodontic treatment with Edgewise and Straightwire techniques on white spot lesions incidence and accumulation of Streptococcus mutans bacteria

2020 ◽  
Vol 53 (3) ◽  
pp. 170
Author(s):  
Elfira Maharani ◽  
Dyah Karunia ◽  
Pinandi Sri Pudyani
Keyword(s):  
Streptococcus Mutans ◽  
Orthodontic Treatment ◽  
Bacterial Count ◽  
Least Square ◽  
White Spot ◽  
Control Group ◽  
Orthodontic Appliances ◽  
White Spot Lesions ◽  
Fixed Orthodontic Appliances ◽  
Insignificant Difference

Background: Fixed orthodontic appliances, such as Edgewise and Straightwire techniques, can increase the amount of plaque retention containing Streptococcus mutans (S. mutans), which can lead to white spot lesions. Purpose: The aim of this study is to analyse the correlation of fixed orthodontic treatment with Edgewise and Straightwire techniques on the incidence of white spot lesions and accumulation of S. mutans. Methods: The samples consisted of three groups: control group (n=8), Edgewise technique group, and Straightwire technique group. We observed the samples at the sixth month and eighth month of the treatment, after the installation of the fixed orthodontic appliances. The observation of white spot lesions with caries detector was applied in all regions. Bacterial swabs were acquired in the lateral incisor region, then a bacterial culture procedure was carried out on selective media of S. mutans, and then a bacterial count was performed. The data was analysed using two-way ANOVA, the post-hoc least square differences test, and the Pearson’s correlation test. Results: The number of white spot lesions in the Edgewise group was higher than in the Straightwire group in the sixth and eighth month of treatment with insignificant difference (p>0.05). The number of S. mutans bacteria increased in all groups, but there were no significant differences (p>0.05). There was no significant relationship between the number of white spot lesions with the accumulation of S. mutans between groups (p>0.05). Conclusion: The Edgewise and Straightwire techniques increase the incidence of white spot lesions but accumulation of S. mutans with the incidence of white spot lesions has no relationship.

scholarly journals The Effect of Regime Oral-Hygiene Intervention on the Incidence of New White Spot Lesions in Teenagers Treated with Fixed Orthodontic Appliances

2020 ◽  
Vol 17 (24) ◽  
pp. 9460
Author(s):  
Urszula Kozak ◽  
Anna Sękowska ◽  
Renata Chałas
Keyword(s):  
Oral Hygiene ◽  
Young Patients ◽  
Assessment System ◽  
White Spot ◽  
Caries Detection ◽  
Control Group ◽  
Orthodontic Appliances ◽  
White Spot Lesions ◽  
Enamel Demineralization ◽  
Fixed Orthodontic Appliances

The present study aimed to evaluate the effect of the oral-hygiene regime on the incidence of enamel demineralization in young patients treated with fixed appliances. Research was conducted in a group of 144 patients aged 12–18 years, divided into 2 groups: orthodontically treated and control. The study was divided into three stages: before treatment (I), at 1 month (II), and at 6 months (III) for their follow-up. The International Caries Detection and Assessment System (ICDAS) was used for the visual assessment of white spot lesions (WSL). After 1 month, no new white spot lesions were observed. After 6 months of the treatment, new lesions were observed in 5% of the orthodontically treated patients and in 6% of the patients in the control group. New decalcifications were located on the proximal surfaces of the central incisors, first premolars, and first molars in the orthodontically treated group; and on the lateral incisors, first premolars, and first molars in the control group. We also observed new enamel demineralization on the vestibular surfaces of the canine and first premolar in the study group. The placement of a fixed appliance did not significantly affect teeth with the presence of new white spot lesions compared to the control group during 6 months of observation.

Immunoexpression of cytokeratin 19 in oral swab from fixed orthodontic appliance users

2007 ◽  
Vol 19 (3) ◽  
Author(s):  
Dwi Mutia Ramdhini ◽  
S. Sunardhi Widyaputra ◽  
Murnisari Dardjan
Keyword(s):  
Oral Mucosa ◽  
Immunohistochemical Method ◽  
Cytokeratin 19 ◽  
Orthodontic Appliances ◽  
Orthodontic Appliance ◽  
Oral Swab ◽  
Descriptive Research ◽  
Fixed Orthodontic Appliances ◽  
Fixed Orthodontic Appliance ◽  
Number Of Cells

The use of fixed orthodontic appliances can improve someone's mastication, speech and appearance. However, this appliance acts as a strange object that may cause irritation to the mucosa epithelial of oral cavity, because of the friction and pressure from the components of the fixed orthodontic appliances which are in direct contact with the oral mucosa. Irritation in the oral mucosa could stimulate the increase of cytokeratin. The appearance of cytokeratin is then used to identify the condition of these cells. This study was a descriptive research to find the expression of cytokeratin 19 with immunohistochemical method in oral mucosa epithelial of fixed orthodontic appliances users. Sample in this study was chosen from 30 fixed orthodontic appliances users. The result of this study was determined by calculating the number of positive cells (brown), compared with total number of cells. The account of positive cells would present the reaction of the epithelial cells according to the inflamation stage which caused by the use of orthodontic appliances. As a conclusion of this study, the use of fixed orthodontic appliances may cause changes in epithelial mucosa which form an adaptation process by increasing the number of progenitor cells marked by cytokeratin 19.

scholarly journals Interceptive Correction of Anterior Crossbite Using Short-Span Wire-Fixed Orthodontic Appliance: A Report of Three Cases

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
S. Nagarajan M. P. Sockalingam ◽  
Khairil Aznan Mohamed Khan ◽  
Elavarasi Kuppusamy
Keyword(s):  
Treatment Compliance ◽  
Mixed Dentition ◽  
Orthodontic Appliances ◽  
Orthodontic Appliance ◽  
Fixed Orthodontic Appliances ◽  
Dental Origin ◽  
Short Span ◽  
Removable Appliance ◽  
Removable Appliances ◽  
Fixed Orthodontic Appliance

Anterior crossbite is relatively a common presentation in the mixed dentition stage. If left untreated, it can lead to a host of problems and may complicate future orthodontic treatment. One of the major difficulties in performing anterior crossbite correction in young children is treatment compliance. In most cases, poor compliance is due to the unacceptability of the removable appliance used. This article describes three cases of successful correction of anterior crossbite of patients in mixed dentition using short-span wire-fixed orthodontic appliances. This sectional appliance provides an alternative method of correcting anterior crossbite of dental origin and offers many advantages compared to the use of removable appliances.

scholarly journals Release of metal ions from fixed orthodontic appliance: An in vitro study in continuous flow system

2013 ◽  
Vol 84 (1) ◽  
pp. 140-148 ◽  
Author(s):  
Marcin Mikulewicz ◽  
Katarzyna Chojnacka ◽  
Paulina Wołowiec
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Ion Concentration ◽  
Emission Spectrometry ◽  
Orthodontic Appliances ◽  
Orthodontic Appliance ◽  
Toxic Dose ◽  
Fixed Orthodontic Appliances ◽  
Fixed Orthodontic Appliance

ABSTRACT Objective: To evaluate the release of metal ions from fixed orthodontic appliances. Materials and Methods: A new system for in vitro testing of dental materials was constructed and consisted of a thermostatic glass reactor that enabled immersion of the studied material. Experimental conditions reflected the human oral cavity, with a temperature of 37°C and a saliva flow rate of 0.5mL/min. The simulated fixed orthodontic appliance made of stainless steel was evaluated. Sampling was performed at several time points during the 28-day study, and the metal ion concentration was determined by inductively coupled plasma optical emission spectrometry. Results: The total mass of released metal ions from the appliance during 4 weeks of the experiment was as follows nickel 18.7 μg, chromium 5.47 μg, copper 31.3 μg. Conclusions: The estimated doses of nickel, chromium, and copper determined by extrapolation of experimental data released during the treatment period were far below the toxic dose to humans. This shows that orthodontic treatment might not be a significant source of exposure to these metal ions.

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