In VitroProgression of Artificial White Spot Lesions Sealed With an Infiltrant Resin

2013 ◽  
pp. 131219134026003
Author(s):  
R Gelani ◽  
AF Zandona ◽  
F Lippert ◽  
MM Kamocka ◽  
G Eckert
Keyword(s):  
White Spot ◽  
White Spot Lesions ◽  
Infiltrant Resin

scholarly journals Bonding brackets on white spot lesions pretreated by means of two methods

2016 ◽  
Vol 21 (2) ◽  
pp. 39-44 ◽  
Author(s):  
Julia Sotero Vianna ◽  
Mariana Marquezan ◽  
Thiago Chon Leon Lau ◽  
Eduardo Franzotti Sant'Anna
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Adhesive System ◽  
White Spot ◽  
Control Group ◽  
White Spot Lesions ◽  
Demineralized Enamel ◽  
Infiltrant Resin

Abstract Objective: The aim of this study was to evaluate the shear bond strength (SBS) of brackets bonded to demineralized enamel pretreated with low viscosity Icon Infiltrant resin (DMG) and glass ionomer cement (Clinpro XT Varnish, 3M Unitek) with and without aging. Methods: A total of 75 bovine enamel specimens were allocated into five groups (n = 15). Group 1 was the control group in which the enamel surface was not demineralized. In the other four groups, the surfaces were submitted to cariogenic challenge and white spot lesions were treated. Groups 2 and 3 were treated with Icon Infiltrant resin; Groups 4 and 5, with Clinpro XT Varnish. After treatment, Groups 3 and 5 were artificially aged. Brackets were bonded with Transbond XT adhesive system and SBS was evaluated by means of a universal testing machine. Statistical analysis was performed by one-way analysis of variance followed by Tukey post-hoc test. Results: All groups tested presented shear bond strengths similar to or higher than the control group. Specimens of Group 4 had significantly higher shear bond strength values (p < 0.05) than the others. Conclusion: Pretreatment of white spot lesions, with or without aging, did not decrease the SBS of brackets.

scholarly journals Effect of Conditioning Protocols and Ultrasonic Application of an Infiltrant Resin in White Spot Lesions

2019 ◽  
Vol 30 (1) ◽  
pp. 58-65 ◽  
Author(s):  
Edgar Alexander López López ◽  
John Alexis Dominguez ◽  
Giovana Mongruel Gomes ◽  
Camilo Andrés Pulido Mora ◽  
Bruna Fortes Bittencourt ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Phosphoric Acid ◽  
Laser Scanning ◽  
Ethanol Solution ◽  
Laser Scanning Microscopy ◽  
White Spot ◽  
Confocal Laser ◽  
Sodium Fluorescein ◽  
White Spot Lesions ◽  
Infiltrant Resin

Abstract The aim of this study was to evaluate different conditioning protocols and sonic/ultrasonic application of an infiltrant resin (IR) in artificial white spot lesions (AWSL). the V/L surfaces of 48 molars were induced to an AWSL and divided in 6 groups, according to the conditioning protocols and application technique: 15% hydrochloric acid (HA) + manual application of the IR; HA + 37% phosphoric acid (PA) + manual application of the IR; HA + ultrasonic application (U) of the IR; HA + sonic application (S) of the IR; PA+HA+S; and PA+HA+U. For the Penetration Depth (PD), the crowns were etched with HA for 120s. The IR Icon® (DMG) was applied according to the manufacturer`s instructions. The crowns were dye penetrated (0.1% red fluorophore rhodamine B isothiocyanate for 12h) and bleached with 30% hydrogen peroxide for 12 h. The discs were immersed in a 50% ethanol solution, containing 100 µM of sodium fluorescein. The PD (in µm) was measured using confocal laser scanning microscopy (20x). The bond strength (BS) was performed by michoshear test (0.5 mm/min). Data were submitted to 2-way ANOVA and Tukey (α=0.05). For BS, the interaction was not significant (p>0.05). For PD, the main factors were significant (application - p<0.001; conditioning technique - p=0.003). The ultrasonic application showed the highest PD values. PA+HA presented higher results than HA. The sonic/ultrasonic applications and the use of phosphoric acid prior to hydrochloric acid improved PD of the infiltrant resin. Conditioning protocols or application techniques did not influence BS values.

Comparision of two fluoride varnishes for controlling white spot lesions. Randomized clinical trial

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Jesús Alberto Luengo - Fereira
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
White Spot ◽  
Controlled Clinical Trial ◽  
White Spot Lesions ◽  
Randomized Controlled Clinical Trial ◽  
Chi Square ◽  
Randomized Controlled ◽  
Anterior Teeth ◽  
The Mean

Objective: To compare two fluorinated varnishes for the control of white spot lesions.Material and Methods: A randomized controlled clinical trial was conducted. A total of 103 active whitespot lesions on permanent upper anterior teeth from 24 patients, aged 7 to 9 years were randomly assigned totwo groups, G1: Duraphat® (n=52) and G2: DuraShield® (n=51). Weekly applications were perform for fourconsecutive weeks. Fifth week the dimension, regression and activity of the lesions were evaluated. Student’sT test, Wilcoxon Ranks and Chi square were used at 5% significance. Results: At the end of the study, the lesion reduction was observed in 69.7%, finding significant differences(p<0.05) in the mean of the initial and final dimensions in general (2.74 mm to 1.91 mm) and in each group, G1(2.84 mm to 2.03 mm), G2 (2.64 mm to 1.78 mm). In the activity of the lesions, it was found in the G1, 12 active and6 inactive lesions; while in G2, there were 14 active and 29 inactive; these differences were significant (p<0.05). Conclusions: The two evaluated products showed similar clinical efficacy in the remineralization of activewhite spot lesions after 4 weeks of therapy.

Detecting white spot lesions on dental photography using deep learning: A pilot study

2021 ◽  
Vol 107 ◽  
pp. 103615
Author(s):  
Haitham Askar ◽  
Joachim Krois ◽  
Csaba Rohrer ◽  
Sarah Mertens ◽  
Karim Elhennawy ◽  
...  
Keyword(s):  
Deep Learning ◽  
Pilot Study ◽  
White Spot ◽  
White Spot Lesions ◽  
Dental Photography

Role of Saliva in Caries Models

1995 ◽  
Vol 9 (3) ◽  
pp. 235-238 ◽  
Author(s):  
W.M. Edgar ◽  
S.M. Higham
Keyword(s):  
Design Of Experiments ◽  
Crucial Role ◽  
Time Course ◽  
Therapeutic Agents ◽  
White Spot ◽  
Protective Effects ◽  
White Spot Lesions ◽  
Dynamic Effects ◽  
Full Expression

The crucial role played by the actions of saliva in controlling the equilibrium between de- and remineralization in a cariogenic environment is demonstrated by the effects on caries incidence of salivary dysfunction and by the distribution of sites of caries predilection to those where salivary effects are restricted. However, of the several properties of saliva which may confer protective effects, it is not certain which are most important. A distinction can be made between static protective effects, which act continuously, and dynamic effects, which act during the time-course of the Stephan curve. Evidence implicates salivary buffering and sugar clearance as important dynamic effects of saliva to prevent demineralization; of these, the buffering of plaque acids may predominate. Enhanced remineralization of white spot lesions may also be regarded as dynamic protective effects of saliva. Fluoride in saliva (from dentifrices, ingesta, etc.) may promote remineralization and (especially fluoride in plaque) inhibit demineralization. The design of experiments using caries models must take into account the static and dynamic effects of saliva. Some models admit a full expression of these effects, while others may exclude them, restricting the range of investigations possible. The possibility is raised that protective effects of saliva and therapeutic agents may act cooperatively.

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