scholarly journals Effect of fluoride-releasing 4-META/MMA-TBB resin on enamel demineralization around orthodontic brackets: An in vitro µCT analysis

2021 ◽  
Author(s):  
Sarina KOIKE ◽  
Hidenori HAMBA ◽  
Junji TAGAMI ◽  
Takashi ONO
Keyword(s):  
Orthodontic Brackets ◽  
Enamel Demineralization

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 Effectiveness of Various Dental Varnishes in Prevention of Enamel Demineralization around Orthodontic Brackets: An In Vitro Study

2020 ◽  
Vol 21 (6) ◽  
pp. 621-625
Author(s):  
George Sam ◽  
Ateet Kakti ◽  
Hosam Ali Baeshen ◽  
Dharmesh H Shivananda ◽  
Waseem Ansar ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Brackets ◽  
Enamel Demineralization

scholarly journals In VitroEffects of Two Topical Varnish Materials and Er:YAG Laser Irradiation on Enamel Demineralization around Orthodontic Brackets

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Feyza Ulkur ◽  
Elif Sungurtekin Ekçi ◽  
Didem Nalbantgil ◽  
Nuket Sandalli
Keyword(s):  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Orthodontic Brackets ◽  
Energy Output ◽  
Surface Microhardness ◽  
Sem Images ◽  
Treatment Groups ◽  
Enamel Demineralization ◽  
Group 1

The aim of thisin vitrowas to evaluate the effects of tricalcium phosphate (TCP) and amorphous calcium phosphate (ACP) containing varnish materials and Er:YAG laser irradiation on enamel demineralization around orthodontic brackets. Forty extracted human premolar teeth were randomly divided into four treatment groups (i.e., 10 in each group): (1) 5% NaF-ACP varnish, (2) 5% NaF-TCP varnish, (3) Er:YAG laser, and (4) control (no treatment). Er:YAG laser was operated at a wavelength of 2.94 μm and the energy output was 80 mJ per pulse; a pulse duration of 200 μsec and and a frequency of 2 Hz were used with water cooling. All samples were then put into pH cycles. Surface microhardness values and representative SEM images were assessed. Surface microhardness values were evaluated using Kruskal-Wallis and Mann-WhitneyUtests. The results revealed that demineralization was significantly lower in the TCP and ACP varnish groups, whereas mean surface microhardness values of the TCP varnish were found higher than the ACP(P<0.05). TCP and ACP varnish materials were found effective for reducing enamel demineralization around orthodontic brackets. Use of Er:YAG laser irradiation as described in this study for inhibition of demineralization was found not satisfactory.

In vitro Measurement of Enamel Demineralization in the Assessment of Fluoride-leaching Orthodontic Bonding Agents

1996 ◽  
Vol 23 (4) ◽  
pp. 343-349 ◽  
Author(s):  
J. D. Kindelan
Keyword(s):  
Analysis Of Variance ◽  
Orthodontic Brackets ◽  
Bonding Agent ◽  
Fluoride Varnish ◽  
Phosphorus Concentration ◽  
Glass Ionomer ◽  
Bonding Agents ◽  
Enamel Demineralization ◽  
Better Than

The aim of this study was to measure in vitro demineralization around orthodontic brackets, bonded with five different bonding agents. Two conventional bonding agents, two fluoride-leaching agents, and a glass ionomer were tested. A sixth group utilized a fluoride varnish after bonding. The amount of dissolved enamel mineral was determined from increases in the phosphorus concentration in the demineralizing solution and measurements were made over a 4 week period. The results confirmed that when fluoride is present in the form of a fluoride-leaching bonding agent or a fluoride varnish, resistance to demineralization is enhanced. Analysis of variance showed that Ketac-cem®, Concise® with Duraphat, and Pulpdent O.B.A.® performed statistically significantly better than Concise®, Bond-fast®, and Rely-a-bond®, in resisting enamel demineralization.

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