scholarly journals Enamel Demineralization Adjacent to Orthodontic Brackets Bonded with ACTIVA BioACTIVE-RESTORATIVE

2018 ◽  
Vol 8 ◽  
pp. 200-203 ◽  
Author(s):  
Kristin G. Saunders ◽  
Gianina Mattevi ◽  
Kevin J. Donly ◽  
Ravikumar Anthony
Keyword(s):  
Imaging System ◽  
Polarized Light ◽  
Orthodontic Brackets ◽  
Control Group ◽  
White Spot Lesions ◽  
Human Teeth ◽  
Enamel Demineralization ◽  
Carious Lesions ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer

IntroductionEnamel demineralization adjacent to orthodontic brackets has been shown to be a consequence during orthodontic treatment. Fluoride-releasing resin-modified glass ionomer cements (RMGICs) have been shown to protect the enamel from white spot lesions, but their bond strength has been proven inadequate. The purpose of this study was to evaluate ACTIVA BioACTIVE-RESTORATIVE, a bioactive material with strength superior to RMGICs, for inhibition of enamel demineralization surrounding orthodontic brackets.Materials and MethodsFifteen human teeth were sectioned and divided into two groups. One group was the control and had orthodontic brackets bonded with Transbond XT, while the second group had orthodontic brackets bonded with ACTIVA. The teeth were varnished within 2 mm of the bracket margins and immersed in an artificial caries solution for 3 days to create carious lesions. The teeth were sectioned and viewed under polarized light microscopy for the detection of enamel demineralization adjacent to the bracket, and then, the lesion areas were measured with a computer imaging system.ResultsThere was a statistically significant difference (P≤ 0.001) that ACTIVA had less enamel demineralization adjacent to the bracket when compared to the control group.ConclusionsThe results of this study have demonstrated that ACTIVA, a fluoride-releasing bioactive restorative material, inhibits demineralization of enamel adjacent to orthodontic brackets when compared to a nonfluoride-releasing control.

scholarly journals Assessment of Enamel Demineralization Adjacent to Orthodontic Brackets Using a Polarized Microscope

2020 ◽  
pp. 030157422095169
Author(s):  
Santosh Ramegowda ◽  
Shilpa Joy ◽  
Nishitha C Gowda ◽  
Shailaja AM ◽  
Bharath Reddy ◽  
...  
Keyword(s):  
Polarized Light ◽  
Orthodontic Brackets ◽  
Fluoride Varnish ◽  
Control Group ◽  
Single Application ◽  
Enamel Demineralization ◽  
Time Period ◽  
Significant Difference ◽  
Experimental Group ◽  
Effect Of Light

Background and Objectives: This study was conducted to assess the effect of light-curable fluoride varnish on enamel demineralization adjacent to orthodontic brackets using polarized light microscopy and to compare the depth of demineralization at different time periods. Method: In 15 patients, the first premolars were allocated into 2 groups. In the experimental group light-curable fluoride varnish was applied. At the end of each time period (60, 90, and 120 days), first premolar brackets were debonded and premolars were extracted. Buccolingual sections were evaluated under a polarized light microscope and depth of demineralization was assessed. Results: The depth of demineralization in the control group increased from 60 to 120 days, and the experimental group did not show any significant difference during the time period. Conclusion: Single application of light-curable fluoride varnish, Clinpro XT can be effective in reducing enamel demineralization during fixed orthodontic mechanotherapy, especially in noncompliant patients.

scholarly journals Efficiency of Amorphous Calcium Phosphate–Containing Orthodontic Composite and Resin Modified Glass Ionomer on Demineralization Evaluated By a New Laser Fluorescence Device

2009 ◽  
Vol 03 (02) ◽  
pp. 127-134 ◽  
Author(s):  
Tancan Uysal ◽  
Mihri Amasyali ◽  
Alp Erdin Koyuturk ◽  
Deniz Sagdic
Keyword(s):  
Calcium Phosphate ◽  
Amorphous Calcium Phosphate ◽  
Glass Ionomer Cement ◽  
Laser Fluorescence ◽  
Orthodontic Brackets ◽  
Glass Ionomer ◽  
Enamel Demineralization ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer

ABSTRACTObjectives: The aim of this in vitro study was to compare the efficacy of Amorphous Calcium Phosphate (ACP)-containing orthodontic composite and resin-modified glass ionomer cement (RMGIC) on enamel demineralization adjacent to orthodontic brackets evaluated by a new laser fluorescence device.Methods: Sixty extracted maxillary premolars were used in the present study. Twenty orthodontic brackets were bonded with ACP-containing orthodontic adhesive (Aegis-Ortho), 20 were bonded with RMGIC (Fuji Ortho LC) ad20 were bonded with Transbond XT composite as the control. All samples were then cycled for 21 days through a daily procedure of demineralization for 6 hours and remineralization for 17 hours. After this procedure, demineralization evaluations were undertaken by a pen-type laser fluorescence device (DIAGNO-dent Pen). Analysis ofvariance (ANOVA) and Tukey test was used for statistical evaluation, at P<.05 level.Results: According to ANOVA, significant demineralization variations (ΔD) were determined among groups (F=6.650; P<.01). The ACP-containing composite showed the lowest (mean: 8.98±2.38) and the control composite showed the highest (mean:12.15±3.83) ΔD, during 21 days demineralization process (P<.01). Significant difference was also observed between the ΔD scores of the RMGIC (mean: 9.24±2.73) and control (P<.05).No significant differences was found in preventive effects of ACP-containing composite and RMGIC (P<.05) against demineralization.Conclusions: The use of both ACP-containing orthodontic composite and RMGIC should be recommended for any at-risk orthodontic patient to provide preventive actions and potentially remineralize subclinical enamel demineralization. (Eur J Dent 2009;3:127-134)

scholarly journals Efficacy of CPP-ACP fluoride varnish applied with and without acid etching in preventing enamel demineralization compared to light-curable fluoride varnish

2021 ◽  
Author(s):  
Moufida Abufarwa ◽  
Amal Noureldin ◽  
Rosemary Dziak ◽  
David Covell
Keyword(s):  
Enamel Surface ◽  
Spherical Particles ◽  
Fluoride Varnish ◽  
Acid Etching ◽  
Control Group ◽  
Glass Ionomer ◽  
Surface Microhardness ◽  
Enamel Demineralization ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer

ABSTRACT Objectives To compare efficacy of casein phosphopeptide (CPP)–amorphous calcium phosphate (ACP) fluoride varnish and light-curable resin modified glass ionomer fluoride varnish (FV) in preventing white spot lesions and evaluating acid etching prior to CPP-ACPFV application on its efficacy. Materials and Methods Molars and premolars were transected and halves divided into four groups (n = 18/group): (1) resin-modified glass ionomer FV: etched and Clinpro-XT varnish (3M ESPE, Pymble, New South Wales, Australia) application; (2) CPP-ACPFV: MI varnish (GC America, Alsip, IL) application; (3) Etch+CPP-ACPFV: etched and MI varnish application; (4) Control: etched and no surface treatment. To simulate 12 weeks in an intraoral environment, samples were subjected to thermocycling, brushing, and pH cycling. Enamel surface microhardness was evaluated at baseline and after the simulated 12 weeks. Representative samples were also assessed using scanning electron microscopy (SEM). Results At baseline there was no significant difference in microhardness among groups. After the simulated 12 weeks, all groups showed significant within-group differences (P &lt; .001). Control showed the highest percentage loss of surface microhardness (89%), followed by CPP-ACPFV (58%), RMGIFV (51%), and Etch+CPP-ACPFV (24%). The control group had a significant decrease in microhardness compared to all experimental groups (P &lt; .001). No difference was found between the RMGIFV and CPP-ACPFV varnish groups. The Etch+CPP-ACPFV group had significantly less decrease in microhardness compared to the RMGIFV (P &lt; .001) and CPP-ACPFV groups (P &lt; .001). With SEM, control samples showed signs of enamel surface damage, while experimental groups showed spherical particles on a relatively intact surface. Conclusions RMGIFV and CPP-ACPFV are effective in reducing enamel demineralization. Acid etching the enamel surface prior to CPP-ACPFV varnish application increased its efficacy.

scholarly journals Combined effect of Er,Cr:YSGG laser and casein phosphopeptide amorphous calcium phosphate on the prevention of enamel demineralization:

2020 ◽  
Vol 90 (3) ◽  
pp. 369-375
Author(s):  
Samar M. Adel ◽  
Eiman S. Marzouk ◽  
Nadia El-Harouni
Keyword(s):  
Calcium Phosphate ◽  
Amorphous Calcium Phosphate ◽  
Polarized Light ◽  
Group Iv ◽  
Control Group ◽  
Lesion Depth ◽  
Enamel Demineralization ◽  
Combined Use ◽  
Significant Difference ◽  
Casein Phosphopeptide

ABSTRACT Objectives To compare the effect of use of laser, casein phosphopeptide–amorphous calcium phosphate (CPP–ACP), and their combination on prevention of enamel demineralization using polarized light microscopy to assess lesion depth. Materials and Methods Eighty premolars were randomly allocated to four equal groups (n = 20): Group I: Control group, no preventive measures. Group II: CPP–ACP. Group III: Er,Cr:YSGG laser. Group IV: Er,Cr:YSGG laser followed by CPP–ACP. Specimens were subjected to thermocycling and brushing protocols equivalent to 1 year intraorally. Then, all teeth were subjected to acid challenge. Teeth were then sectioned longitudinally and examined under a polarized light microscope and lesion depth was measured. Results Group IV resulted in the least lesion depth with a significant difference between it and all other groups. CPP–ACP alone and laser alone also showed a significant difference in white spot lesion (WSL) depth compared to the control group; however, no significant difference was found between them. Conclusions The combined use of laser and CPP–ACP showed the best prevention against WSL development. The use of CPP–ACP or laser alone also resulted in a significant reduction in lesion depth but was significantly less than their combined use, with no significant difference between them.

scholarly journals Effect of Light-Curable Fluoride Varnish and Conventional Topical Fluoride Varnish on Prevention of Enamel Demineralization Adjacent to Orthodontic Brackets: A Comparative Study

2020 ◽  
Vol 54 (1) ◽  
pp. 14-23
Author(s):  
Sudipta Chakraborty ◽  
Harshavardhan Kidiyoor ◽  
Anand K. Patil
Keyword(s):  
Promising Result ◽  
Polarized Light ◽  
Study Groups ◽  
Orthodontic Brackets ◽  
Fluoride Varnish ◽  
Single Application ◽  
Enamel Demineralization ◽  
Significant Difference ◽  
Topical Fluoride ◽  
Effect Of Light

Objectives: Various fluoride varnishes have shown promising result in preventing enamel demineralization around orthodontic brackets as they do not depend on patient compliance. The objective of the study was to compare the effect of light-curable fluoride varnish (Clinpro XT) and conventional topical fluoride varnish (Fluoritop SR) in preventing enamel demineralization adjacent to orthodontic brackets. Methods: 20 patients who required extraction of four first premolars for orthodontic treatment were bonded with orthodontic brackets and each premolar received single application of Clinpro XT and Fluoritop SR fluoride varnish in 2 diagonally opposite quadrants and rest 2 premolars acted as control. The sample teeth were debonded and extracted after 1 month and 2 months of varnish application. The samples were sectioned using hard tissue microtome and evaluated under polarized light microscopy to measure the depth of demineralization. Results: Kolmogorov Smirnov test showed normal distribution of data. Comparison between the study groups with depth of demineralization scores showed statistically significant variation in one-way analysis of variance test. Turkey’s multiple post hoc procedures showed statistically significant difference in the depth of demineralization between all the 3 groups after 1 month and 2 months. Dependent t test showed statistically significant increment in the depth of demineralization in all the 3 groups between 1 month and 2 months. Conclusion: This study concluded that single application of both Fluoritop SR and Clinpro XT was effective in reducing significant depth of demineralization compared to control. Clinpro XT showed significantly less demineralization compared to Fluoritop SR after 1 month and 2 months of varnish application.

scholarly journals The Impact of Chlorhexidine Mouth Rinse on the Bond Strength of Polycarbonate Orthodontic Brackets

2014 ◽  
Vol 15 (6) ◽  
pp. 688-692 ◽  
Author(s):  
Sukumaran Anil ◽  
Farouk Ahmed Hussein ◽  
Mohammed Ibrahim Hashem ◽  
Elna P Chalisserry
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Test Group ◽  
Orthodontic Brackets ◽  
Control Group ◽  
Mouth Rinse ◽  
Significant Difference ◽  
Bond Strengths ◽  
The Impact

ABSTRACT Objective The purpose of the current in-vivo study was to assess the effect of using 0.12% chlorhexidine (CHX) mouth rinse, before bonding, on shear bond strength of polycarbonate brackets bonded with composite adhesive. Subjects and methods Eighteen orthodontic patients with a mean age 21.41 ± 1.2 years, who were scheduled to have 2 or more first premolars extracted, were included in this study. Patients were referred for an oral prophylaxis program which included, in part, the use of a mouth rinse. Patients were divided into 2 groups, a test group of 9 patients who used 0.12% CHX gluconate mouth rinse twice daily and a control group of 9 patients who used a mouth rinse without CHX, but with same color. After 1 week, polycarbonate brackets were bonded to first premolars with Transbond XT composite adhesive. Premolars were extracted after 28 days and tested for shear bond strength on a universal testing machine. Student's t-test was used to compare shear bond strengths of both groups. Results No statistically significant difference was found in bond strengths’ values between both groups. The test group (with CHX) has mean shear bond strength of 14.21 ± 2.42 MPa whereas the control group (without CHX) revealed a mean strength of 14.52 ± 2.31 MPa. Conclusion The use of 0.12% CHX mouth rinse, for one week before bonding, did not affect the shear bond strength of polycarbonate brackets bonded with Transbond composite. Furthermore, these brackets showed clinically acceptable bond strength. How to cite this article Hussein FA, Hashem MI, Chalisserry EP, Anil S. The Impact of Chlorhexidine Mouth Rinse on the Bond Strength of Polycarbonate Orthodontic Brackets. J Contemp Dent Pract 2014;15(6):688-692.

scholarly journals Comparison of Antimicrobial Efficacy of Calcium Hydroxide and 2% Chlorhexidine as Medicaments

2018 ◽  
Vol 5 (2) ◽  
pp. 8-11
Author(s):  
Rupan Tripathi ◽  
Vanita Gautam ◽  
V. K. Pahwa ◽  
Vikas Agrhari ◽  
Manu Batra ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Normal Saline ◽  
Antimicrobial Efficacy ◽  
Control Group ◽  
Medical Sciences ◽  
Human Teeth ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Post Hoc ◽  
Chlorhexidine Gel

INTRODUCTION: The use of intracanal medicaments help in elimination of bacteria that remain even after cleaning and shaping. This study isdone to compare the antimicrobial efficacy of2% chlorhexidine gel and calcium hydroxide as an intracanal medicament against E.faecalis.MATERIAL  & METHODS: Sixty extracted single-rooted human teeth were prepared with standard method. After contaminating the canals with E. Faecalis and incubated for seven days, the samples were divided into four groups (n=15). Normal saline was used as control group. The teeth in each group were treated with normal saline, calcium hydroxide and 2% chlorhexidine gel. Microbial samples were obtained from the dentinal shavings of root and colony forming units (CFU) of E.faecalis were recorded after 24hrs, 72hrs and 7 days.RESULTS: To determine the significance of the differences between the different groups, ANOVA(Analysis of variance) and Tukeys Honestly significant Difference (HSD) Post hoc test were performed. Mean CFU of calcium hydroxide group and 2% chlorhexidine group was statistically significantly different from CFU of all other groups (p<0.01).CONCLUSION: Mean CFU of calcium hydroxide was found to increase at 24 hrs and decreases at 72 hrs and 7 days.The antimicrobial efficacy 2% chlorhexidine gel was better than calcium hydroxide paste.Journal of Universal College of Medical Sciences (2017)Vol.05 No.02 Issue 16, Page: 8-11

scholarly journals Glass Ionomer Cements can be used for Bonding Orthodontic Brackets After Cancer Radiation Treatment?

2018 ◽  
Vol 29 (2) ◽  
pp. 128-132 ◽  
Author(s):  
Gabriela Cristina Santin ◽  
Alexandra Mussolino de Queiroz ◽  
Regina Guenka Palma-Dibb ◽  
Harley Francisco de Oliveira ◽  
Paulo Nelson Filho ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Glass Ionomer Cement ◽  
Enamel Surface ◽  
Orthodontic Brackets ◽  
Glass Ionomer ◽  
Clinical Practices ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Ionomer Cement

Abstract Patients undergoing radiotherapy treatment present more susceptibility to dental caries and the use of an orthodontic device increases this risk factor due to biofilm accumulation around the brackets. The objective of this study was to evaluate the shear bond strength to irradiated permanent teeth of orthodontic brackets bonded with conventional glass ionomer cement and resin-modified glass ionomer cement due to the fluoride release capacity of these materials. Ninety prepared human premolars were divided into 6 groups (n=15), according to the bonding material and use or not of radiation: CR: Transbond XT composite resin; RMGIC: Fuji Ortho LC conventional glass ionomer cement; GIC: Ketac Cem Easymix resin-modified glass ionomer cement. The groups were irradiated (I) or non-irradiated (NI) prior to bracket bonding. The specimens were subjected to a fractioned radiation dose of 2 Gy over 5 consecutive days for 6 weeks. After the radiotherapy, the brackets were bonded on the specimens with Transbond XT, Fuji Ortho LC and Ketac Cem Easymix. After 24 h, the specimens were subjected to shear bond strength test. The image of enamel surface (classified by Adhesive Remnant Index - ARI) was also evaluated and its frequency was checked among groups/subgroups. The shear bond strength variable was evaluated with ANOVA and Tukey’s post-hoc test. GIC group showed the lowest adhesion values among the groups (p<0.05). There was no statistically significant difference among non-irradiated and irradiated groups (p>0.05). As for the ARI, the CR-I group showed the highest material retention on enamel surface among the irradiated groups. RMGIC group showed the highest values for shear bond strength and presented ARI acceptable for clinical practices.

Does Casein Phosphopeptid Amorphous Calcium Phosphate Provide Remineralization on White Spot Lesions and Inhibition of Streptococcus mutans?

2014 ◽  
Vol 38 (4) ◽  
pp. 302-306 ◽  
Author(s):  
Arzu Aykut-Yetkiner ◽  
Nazan Kara ◽  
Mustafa Ateş ◽  
Nazan Ersin ◽  
Fahinur Ertuğrul
Keyword(s):  
Calcium Phosphate ◽  
Streptococcus Mutans ◽  
Amorphous Calcium Phosphate ◽  
Saliva Sample ◽  
Test Group ◽  
White Spot ◽  
Control Group ◽  
White Spot Lesions ◽  
Sample Collection ◽  
Significant Difference

Objective: The aim of this study was to evaluate the remineralization effect of Casein Phosphopeptid Amorphous Calcium Phosphate (CPP-ACP) on white spot lesions (WSL) and its inhibitory effect on Streptococcus mutans colonization. Study design: The study group consisted of 60 children exhibiting at least 1-WSL. Subjects were randomly divided into 2 groups: a test group of using CPP-ACP cream (Tooth Mousse, GC Europe N.V., Leuven, Belgium) and a control group using only fluoride containing toothpaste for a period of 3-months. Baseline WSLs were scored using DIAGNOdent device (KaVo Germany) and the saliva samples were collected to measure S. mutans counts. After the 3-month period the WSLs were again recorded and the saliva sample collection was repeated. Wilcoxon Signed Ranks Test was used for statistical analysis. Results: DIAGNOdent measurements were increased by time (p=0.002) in control group and no statistically significant difference (p=0.217) was found in test group by the 3-month period. In both groups, the mutans counts were decreased in 3-month experimental period. Conclusions: These clinical and laboratory results suggested that CPP-ACP containing cream had a slight remineralization effect on the WSL in the 3-month evaluation period however longer observation is recommended to confirm whether the greater change in WSLs is maintained.

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