scholarly journals Quantification of White Spot Lesions around Orthodontic Brackets with Image Analysis

2008 ◽  
Vol 78 (4) ◽  
pp. 585-590 ◽  
Author(s):  
Christos Livas ◽  
Anne Marie Kuijpers-Jagtman ◽  
Ewald Bronkhorst ◽  
Aniek Derks ◽  
Christos Katsaros
Keyword(s):  
Image Analysis ◽  
Orthodontic Brackets ◽  
White Spot ◽  
White Spot Lesions

scholarly journals Preventive effect of fluoridated orthodontic resins subjected to high cariogenic challenges

2010 ◽  
Vol 21 (3) ◽  
pp. 211-215 ◽  
Author(s):  
Paula Passalini ◽  
Tatiana Kelly da Silva Fidalgo ◽  
Erika Machado Caldeira ◽  
Rogerio Gleiser ◽  
Matilde da Cunha Gonçalves Nojima ◽  
...  
Keyword(s):  
Color Change ◽  
Artificial Saliva ◽  
Orthodontic Brackets ◽  
White Spot ◽  
White Spot Lesion ◽  
White Spot Lesions ◽  
Preventive Effect ◽  
Ph Cycling ◽  
Inhibition Zones

The aim of the present study was to evaluate the in vitro caries preventive effect of fluoridated orthodontic resins under pH cycling with two types of acid demineralizing saliva. Brackets were bonded to 60 bovine incisors, using either Transbond Plus Color Change (n=30) or Orthodontic Fill Magic (n=30) orthodontic resins. Each group of resin was divided into 3 subgroups (n=10): immersion in remineralizing artificial saliva for 14 days, pH cycling with high cariogenic challenge in acid saliva with pH 5.5, and acid saliva with pH 4.5. After 14 days of pH cycling, the caries preventive effect on the development of white spot lesion was evaluated considering the presence of inhibition zones to white spot lesions using two scores: 0= absence and 1= presence. Kruskal Wallis and Mann-Whitney tests (a=0.05) were used. Formation of white spot lesions was observed only under pH cycling using acid saliva with pH 4.5; with Transbond Plus Color Change being significantly more effective (p<0.05) in preventing the appearance of white spot lesions effect than Orthodontic Fill Magic. The acidity of the demineralizing solution influenced the formation of white spot lesions around orthodontic brackets under highly cariogenic conditions. Transbond Plus Color Change resin presented higher caries preventive effect than Orthodontic Fill Magic.

scholarly journals A novel biomimetic orthodontic bonding agent helps prevent white spot lesions adjacent to brackets

2012 ◽  
Vol 83 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Lauren Manfred ◽  
David A. Covell ◽  
Jennifer J. Crowe ◽  
Eser Tufekci ◽  
John C. Mitchell
Keyword(s):  
Bioactive Glass ◽  
Surface Hardness ◽  
Enamel Surface ◽  
Orthodontic Brackets ◽  
Bonding Agent ◽  
White Spot ◽  
White Spot Lesions ◽  
Bonding Agents ◽  
Orthodontic Bonding ◽  
Hardness Values

Abstract Objective: To compare changes in enamel microhardness adjacent to orthodontic brackets after using bonding agents containing various compositions of bioactive glass compared to a traditional resin adhesive following a simulated caries challenge. Materials and Methods: Extracted human third molars (n  =  10 per group) had orthodontic brackets bonded using one of four novel bioactive glass (BAG)-containing orthodontic bonding agents (BAG-Bonds) or commercially available Transbond-XT. The four new adhesives contained BAG in varying percentages incorporated into a traditional resin monomer mixture. Teeth were cycled through low-pH demineralizing and physiologic-pH remineralizing solutions once each day over 14 days. Microhardness was measured on longitudinal sections of the teeth 100, 200, and 300 µm from the bracket edge and beneath the brackets, at depths of 25 to 200 µm from the enamel surface. Normalized hardness values were compared using three-way analysis of variance. Results: Significantly less reduction in enamel microhardness was found with the experimental adhesives at depths of 25 and 50 µm at all distances from the bracket edge. In all groups, there were no significant changes in enamel microhardness past 125-µm depth. Results varied with the different BAG-Bonds, with 81BAG-Bond showing the smallest decrease in enamel microhardness. Conclusions: The BAG-Bonds tested in this study showed a reduction in the amount of superficial enamel softening surrounding orthodontic brackets compared to a traditional bonding agent. The results indicate that clinically, BAG-Bonds may aid in maintaining enamel surface hardness, therefore helping prevent white spot lesions adjacent to orthodontic brackets.

Control of White Spot Lesions with Use of Fluoride Varnish or Chlorhexidine Gel During Orthodontic Treatment A Randomized Clinical Trial

2016 ◽  
Vol 40 (4) ◽  
pp. 274-280 ◽  
Author(s):  
M Restrepo ◽  
D G Bussaneli ◽  
F Jeremias ◽  
RCL Cordeiro ◽  
DB Raveli ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Experimental Period ◽  
Orthodontic Brackets ◽  
White Spot ◽  
Fluoride Varnish ◽  
Controlled Clinical Trial ◽  
White Spot Lesions ◽  
Diagnodent Pen ◽  
Orthodontic Patients ◽  
Chlorhexidine Gel

Objective: To compare the effectiveness of fluoride varnish and 2% chlorhexidine gel for controlling active white spot lesions (WSLs) adjacent to orthodontic brackets. Study design: Thirty-five orthodontic patients (17.2 ± 2.3 years old) presenting 60 WSLs adjacent to orthodontic brackets were enrolled in this randomized, blind, 3-armed and controlled clinical trial. The patients were randomly allocated to 1 of 3 arms: (1) two applications of 5% NaF varnish- F, with one-week interval, (2) two applications of 2% chlorhexidine gel-CHX, with one-week interval and (3) usual home care-control (CO). The WSLs were scored by using a DIAGNOdent pen. An independent examiner scored the surfaces using Nyvad criteria for caries assessment. Results: A total of thirty patients presenting 51 lesions completed the study. All treatments reduced the fluorescence values during the experimental period; however, F induced faster remineralization than CHX. After 3 months, 70.58 % were inactive considering all groups. DIAGNOdent pen and Nyvad presented a significant correlation. Conclusion: After 3 months of treatment, F, CHX and CO were capable of controlling the WSLs adjacent to the orthodontic brackets. However, the treatment with F was capable of controlling the progression of the WSLs in a shorter period of time.

scholarly journals In Vitro Comparison of Fluoride, Magnesium, and Calcium Phosphate Materials on Prevention of White Spot Lesions around Orthodontic Brackets

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Selda Lale ◽  
Hikmet Solak ◽  
Evren Hınçal ◽  
Levent Vahdettin
Keyword(s):  
Orthodontic Brackets ◽  
White Spot ◽  
Tooth Surface ◽  
White Spot Lesions ◽  
Surface Appearance ◽  
Time Points ◽  
Fluoride Toothpaste ◽  
Hygiene Practices ◽  
Fixed Appliances

One common negative side effect of orthodontic treatment with fixed appliances is the development of white spot lesions (WSLs) around brackets. This study is aimed at comparing the efficacy of various oral hygiene practices in preventing enamel demineralization around orthodontic brackets under similar in vitro conditions. The study included 90 extracted bovine incisors, which were randomized into six groups: fluoride toothpaste (FT), nonfluoride toothpaste (NFT), fluoride varnish plus fluoride toothpaste (FV+FT), CPP-ACP varnish plus fluoride toothpaste (CPP-ACP+FT), medical minerals gel plus nonfluoride toothpaste (MMG+NFT), and no intervention (control). All groups were subjected to demineralization and remineralization cycles. Visual appraisals were used to evaluate the changes in the enamel surface appearance at the beginning and end of the experiment. The changes in the demineralization degree were evaluated by measuring the Ca+2 concentration in the demineralization solution at different time points. The majority of teeth in the CPP-ACP+FT group exhibited no shift in appearance, whereas in the other groups, a slight change in enamel translucency was observed. At all the time points, the Ca+2 concentration in the demineralization solution in the CPP-ACP+FT group was the least among all other groups. At day 5, MMG+NFT’s preventive efficacy was significantly higher than FV+FT’s, but at days 10, 15, and 19, their efficacy was similar. However, at all the time points, MMG+NFT’s efficacy was significantly higher than that of control, whereas FV+FT’s efficacy was decreased at days 10, 15, and 19 and was close to the efficacy of control. To fight WSLs, early diagnosis was of great importance and examination of the tooth surface after air-drying for 5 s was recommended.

Effects of acid etchants used for bonding orthodontic brackets on the remineralization of enamel white-spot lesions

2011 ◽  
Vol 70 (4) ◽  
pp. 126-135 ◽  
Author(s):  
Ken Hidaka ◽  
Kazuaki Nishimura ◽  
Ken Miyazawa ◽  
Hideyuki Miwa ◽  
Shigemi Goto
Keyword(s):  
Orthodontic Brackets ◽  
White Spot ◽  
White Spot Lesions

The Influence of Fluoride-releasing Bonding Composites in the Development of Artificial White Spot Lesions. An Ex Vivo Study

1994 ◽  
Vol 21 (4) ◽  
pp. 375-378 ◽  
Author(s):  
Sarah H. A. Ghani ◽  
Stephen L. Creanor ◽  
John K. Luffingham ◽  
Richard H. Foye
Keyword(s):  
Mineral Content ◽  
Ex Vivo ◽  
Visual Assessment ◽  
Orthodontic Brackets ◽  
White Spot ◽  
White Spot Lesions ◽  
Preventive Effect ◽  
High Prevalence ◽  
Ex Vivo Study ◽  
Mineral Loss

This study investigates the effects of fluoride-releasing bonding composites on the development of artificially created white spot lesions ex vivo. The severity of the lesions was estimated visually using the von der Fehr Caries Index. The integrated mineral loss of the lesions (Δz) was measured using micro-radiography/microdensitometry. The results of the visual assessment indicated that teeth bonded with Reliance® exhibited more Grade 2 lesions than expected. Teeth bonded with Mirage Dual Cure®, however, showed a high prevalence of teeth with no lesions (Grade 0) and few with Grade 2. Microdensitometric analysis found 17 subsurface lesions; 14 of these were in the non-fluoridated groups (Right-On® and Heliosit®), and 3 and 1 in the fluoridated groups (Reliance® and Mirage Dual Cure®), respectively. Lesion mineral content ranged from 64·93 to 20·43 per cent for Right-On®, from 32·53 to 26·72 per cent for Heliosit®, from 19·52 to 19·58 per cent for Reliance®, and 23·58 per cent for Mirage Dual Cure®. The results of this study suggest that fluoride-releasing composites may have a caries preventive effect around orthodontic brackets.

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