Nano-hydroxyapatite could Compensate the Adverse Effect of Soft Carbonated Drinks on Enamel

2016 ◽  
Vol 17 (8) ◽  
pp. 635-638 ◽  
Author(s):  
Mohammad B Rezvani ◽  
Mohammad R Rouhollahi ◽  
Fahimeh Andalib ◽  
Faeze Hamze
Keyword(s):  
Adverse Effect ◽  
Mineral Content ◽  
Protective Factor ◽  
Artificial Saliva ◽  
Soft Drink ◽  
Treatment Protocol ◽  
Control Group ◽  
Tooth Structure ◽  
Before And After ◽  
Carbonated Drinks

ABSTRACT Introduction Since one of the most important disadvantages of soft drinks includes their adverse effect on mineral content of enamel because of their low pH, this study examined the microhardness of enamel before and after exposure to a soft drink containing different concentrations of nano-hydroxyapatite (nano-HA) as an additive. Materials and methods Sixty caries free human premolars were mounted in epoxy resin. After polishing, the baseline microhardness was recorded three times for each specimen using a Vickers indenter at 50 gm load. Subsequently, the samples were divided into six groups, which were treated for 5 minutes at 9°C by a cola-based drink contacting 0, 0.5, 1, 5, and 10 wt.% of nano-HA while the control group was immersed in artificial saliva. Ultimately, the final microhardness was assessed three times again for each specimen. Results Paired t-test showed that in groups containing 0 and 0.5 wt.% of nano-HA, the microhardness was significantly reduced after treatment protocol (p = 0.00 and 0.01 respectively). Whereas in the other groups the microhardness was not significantly changed after treatment (p > 0.05). Conclusion Pure cola-based drink has a pronounced adverse effect on enamel microhardness, while admixing it with nano-HA could act as a protective factor. Clinical significance Although soft beverages are hazardous to tooth structure, some additives could compensate their adverse effect. How to cite this article Rezvani MB, Rouhollahi MR, Andalib F, Hamze F. Nano-hydroxyapatite could Compensate the Adverse Effect of Soft Carbonated Drinks on Enamel. J Contemp Dent Pract 2016;17(8):635-638.

Effect of Calcium-phosphate Desensitizers on Staining Susceptibility of Acid-eroded Enamel

2019 ◽  
Vol 44 (3) ◽  
pp. 281-288 ◽  
Author(s):  
KY Kyaw ◽  
M Otsuki ◽  
MS Segarra ◽  
N Hiraishi ◽  
J Tagami
Keyword(s):  
Surface Roughness ◽  
Calcium Phosphate ◽  
Repeated Measures ◽  
Laser Scanning ◽  
Artificial Saliva ◽  
Color Difference ◽  
Laser Scanning Microscopy ◽  
Confocal Laser ◽  
Control Group ◽  
Before And After

SUMMARY Objective: To investigate the effect of calcium-phosphate–based desensitizers, Teethmate AP paste (TMAP) and Teethmate Desensitizer (TMD) (Kuraray Noritake Dental, Tokyo, Japan), on the prevention of staining on acid-eroded enamel. Methods and Materials: Forty polished enamel samples (4×4×1 mm) from bovine incisors were randomly divided into five groups (n=8). After immersion in 50 mL of 0.5% citric acid (pH 2.5) for 15 minutes to form acid-eroded surfaces, the surfaces were subjected to different treatments with TMAP, TMD, and NaF (0.21% means 950 ppm) for five minutes. Another eroded group was not treated with desensitizer. For the control group, the samples were not eroded or treated. All the samples were stored in artificial saliva (AS) at pH 7.2 for 24 hours at 37°C. The TMAP, TMD, or NaF was reapplied at eight and 16 hours during the 24 hours of storage time. The surface roughness (Sa) was evaluated following ISO 25178 for surface texture using confocal laser scanning microscopy (VK-X 150 series, Keyence, Osaka, Japan) before acid erosion, after acid erosion, and after 24 hours of incubation in AS. Afterward, the color difference was measured with a dental colorimeter (Shade Eye NCC, Shofu, Kyoto, Japan) before and after staining with tea solution. Results: One-way repeated measures analysis of variance showed that acid erosion significantly increased Sa (p<0.001). TMAP- and TMD-treated groups exhibited lower Sa values than the NaF group and the no-desensitizer treatment group. The greatest staining was observed in the NaF group and the no-desensitizer group, while the TMAP and TMD groups significantly decreased the formation of stains. Conclusions: Acid-eroded enamel increased surface roughness and tended to absorb more stains. However, the application of TMAP and TMD moderated the roughness and thus prevented the formation of extrinsic stains.

scholarly journals Color stability of artificial teeth after exposure to acid and staining agents

2015 ◽  
Vol 18 (1) ◽  
pp. 60 ◽  
Author(s):  
Mateus Guimaraes Lage Reggiani ◽  
Fernanda Alves Feitosa ◽  
Rodrigo Máximo De Araújo
Keyword(s):  
Red Wine ◽  
Artificial Saliva ◽  
Soft Drink ◽  
Color Stability ◽  
Lemon Juice ◽  
Color Variation ◽  
Color Measurement ◽  
Oral Rehabilitation ◽  
Before And After ◽  
Artificial Teeth

<p><strong>Objective: </strong>Changes in color of artificial teeth mainly occur due to ingestion of beverages and use of products for cleaning and disinfection. The more aggressive solutions must be identified and the patient provided with explanations in order to avoid or reduce the frequency of their use, to a higher longevity of the denture. The purpose of this study was to evaluate the changes in color of artificial teeth before and after immersion in beverages and disinfectants. <strong>Material and Methods: </strong>96 artificial resin teeth were randomly divided into 8 groups. Each group was immersed for 10 min into a test solution (coffee, lemon juice, chlorhexidine gluconate, red wine, cola-based soft drink, vinegar or antiseptic with and without alcohol) and then the specimens were stored in artificial saliva for 23 h and 50 min, completing a period of 24 h. This procedure was performed for 14 consecutive days and after this period the second color measurement was made.The data obtained with the spectrophotometer using the CIEL*a*b* system were statistically analyzed using ANOVA non parametric, Kruskal-Walis and the Dunn test. <strong>Results: </strong>There were found differences in color variation for each experimental group after the challenge. statistically significant differences were found between the coffee, red wine and lemon juice groups. <strong>Conclusion: </strong>All the substances changed the color of artificial teeth; coffee was the substance that caused most staining of artificial teeth, altering color and luminosity; the oral antiseptics with and without alcohol promoted whitening of the artificial teeth.</p><p class="western" align="justify"><span style="font-family: Arial, serif;"><strong>Keywords: </strong></span><span style="font-family: Arial, serif;"><span lang="en-US">Artificial tooth; Denture; Oral rehabilitation; Staining.</span></span></p>

scholarly journals PERBEDAAN EFEK MINUMAN BERKARBONASI DENGAN MINUMAN PROBIOTIK TERHADAP PERUBAHAN GAYA Z-SPRING

2021 ◽  
Vol 3 (2) ◽  
pp. 86-92
Author(s):  
Jean Saragih ◽  
Zulfan Muttaqin ◽  
LINA LINA HADI
Keyword(s):  
Stainless Steel ◽  
Research Result ◽  
Control Group ◽  
P Value ◽  
Orthodontic Wire ◽  
Significant Difference ◽  
Before And After ◽  
Carbonated Beverage ◽  
Carbonated Drinks ◽  
The Wire

The effect of the drink can cause changes in the resilience of the wire which is usually due to carbonated drinks or probiotics Carbonated beverage is a daily drinks with carbonic acid and has pH of 2.32. Carbonated beverage with lower pH may cause the releasing of nickel (Ni) and chromium (Cr) ions on stainless steel orthodontic wire in oral cavity and result in alteration of resilience. Purpose: The aim of this research is to know the change of resilience of stainless steel removable orthodontic wire before and after immersion with ,probiotic,carbonated beverages and saline solution. Material and methods: This study is true experimental study using pre and post test with control group design, consist of 9  treatment groups and  control groups were obtained from preliminary test, each group using stainless steel ortodontic wire with the diameter is 0.6 mm and given a scratch along the wire then perform the resilience before and after the immersion using a UTM. Each sample was immersed and put in an incubator at 37oC for the first 4 days then measured with a UTM device then soaked again for the next 4 days and measured again. Research result: The results showed that there were differences in the resilience of the wires on day 0 and day 4 when immersed in carbonated drinks (p = 0.047) compared to soaking saliva and probiotics. Then z-spring stainless steel orthodontic wire soaked in probiotic obtained p value = 0.038. This shows that there is a difference in the resilience of the 8th day compared to the 0th day.Conclusion: Results Soaking stainless steel orthodontic wire changes its resilience. There was a significant difference between day 4 and day 8 for the wire soaked in carbonated drinks (p = 0.001). there is no significant difference in the wire soaked with probiotic drinks.

scholarly journals Effect of Short- and Long-term Use of Home and In-Office Bleaching with Carbamide Peroxide and Hydrogen Peroxide on Bleaching with Carbamide Peroxide and Hydrogen Peroxide on Enamel Microhardness Enamel Microhardness

2020 ◽  
Vol 27 (2) ◽  
Author(s):  
Nazila Ameli ◽  
◽  
Niloofar Kianvash Rad ◽  
Farzane Nikpour ◽  
Raheb Ghorbani ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Dental Treatment ◽  
Artificial Saliva ◽  
Tooth Bleaching ◽  
Control Group ◽  
Bleaching Agent ◽  
Carbamide Peroxide ◽  
Dental Procedures ◽  
Before And After ◽  
At Home

Bleaching is a well-known esthetic dental treatment performed to lighten the tooth shade. Among different cosmetic dental procedures, including direct and indirect tooth-colored restorations, bleaching is likely the most conservative approach. Bleaching has been accepted well by patients and proven as a safe and effective approach. Objective: Tooth bleaching can be conducted at home or in offices. This study was performed to compare the enamel microhardness before bleaching and one and eight weeks after the application of different bleaching agents. Methods: Forty human premolars were randomly divided into four groups, and their buccal surface underwent a Vickers microhardness test before and after bleaching. Bleaching was performed with 40% hydrogen peroxide (HP) in-office bleaching agent (n = 10), 15% HP at-home bleaching agent (n = 10), and 15% carbamide peroxide (CP) at-home bleaching agent (n = 10) for two weeks. Ten samples were stored in artificial saliva and set as the control group. The microhardness of the samples was measured again one and eight weeks after bleaching. Results: The microhardness significantly decreased in the four groups one week after bleaching. Conclusion: The enamel microhardness was temporarily decreased by in-office bleaching. However, the microhardness increased with time and returned to the baseline value. Although the enamel microhardness initially reduced, it increased eight weeks after 15% CP at-home bleaching agent was applied.

scholarly journals Effects of Carbonated Drinks on Mechanical Properties of Three Types of Thermoplastic Aligner Materials: An In vitro Study

2020 ◽  
Vol 54 (2) ◽  
pp. 115-120
Author(s):  
Leyona Pushpa Femina I. ◽  
Chandrashekar B.S. ◽  
Arun A.V ◽  
Aravind S. Raju ◽  
Ramesh Kumar P.C. ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Artificial Saliva ◽  
Testing Machine ◽  
In Vitro Study ◽  
Control Groups ◽  
Universal Testing ◽  
In Vitro Aging ◽  
Before And After ◽  
Carbonated Drinks

Objectives: The aim was to assess the mechanical properties of the three types of thermoplastic aligner materials before and after in vitro aging with carbonated drinks. Materials and methods: Twelve samples of thermoplastic aligner materials produced by three different manufacturers (Leone S.P.A, Florence, Italy; Duran, SCHEU-dental GmbH, Iserlohn, Germany; Essix ACE, Dentsply Raintree Essix, United States) were selected. Samples were thermoformed and later aged in vitro at a constant temperature in artificial saliva along with carbonated drinks (10 min each day) for 2 weeks. The mechanical properties were characterized using universal testing machine such as instron (MultiTest 10-i) and the results were compared with the control groups (before exposure to carbonated drinks). Results: All the above-mentioned thermoplastic materials tested showed an insignificant ( p > 0.05) decrease in stiffness, yield strength, and elastic modulus after aging. The stiffness of the thermoplastic materials increased with an increase in thickness. The flexure modulus was higher for the thinner materials, whereas it was lower for the thicker materials. Conclusion: Experimental results indicate that the aligner material will remain stable during and following exposure to carbonated drinks, which suggests that the orthodontic force from thermoplastic appliances does not decrease with clinical usage of carbonated drinks.

scholarly journals Effect of Four Bleaching Regimens on Color Changes and Microhardness of Dental Nanofilled Composite

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
Simone Xavier Silva Costa ◽  
Anne Buss Becker ◽  
Alessandra Nara de Souza Rastelli ◽  
Leonor de Castro Monteiro Loffredo ◽  
Marcelo Ferrarezi de Andrade ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Vickers Hardness ◽  
Artificial Saliva ◽  
Control Group ◽  
Carbamide Peroxide ◽  
Mean Values ◽  
Color Changes ◽  
Before And After ◽  
And Control ◽  
Cielab Color

Objective. The purpose of this study was to compare the color changes and microhardness of a nanocomposite after four bleaching regimens.Materials. Twenty-five specimens(n=25)were made with a nanocomposite resin (Filtek Supreme XT). The specimens were divided into five groups equally(n=5): bleaching groups and control group, as follows: G1: artificial saliva at37∘C; (control) G2: hydrogen peroxide (HP) at 7%; G3: hydrogen peroxide (HP) at 35%; G4: carbamide peroxide (CP) at 10%; G5: carbamide peroxide (CP) 35%. Color measurements were made with spectrophotometer using CIELAB color scale. The Vickers hardness (VHN) measurements were performed at the top surface. The data were analyzed with two-way Analysis of Variance.Results.ΔE and VHN mean values into the groups were not statistically different, however, the VHN mean values before and after storage and bleaching showed statistically significant differences.Conclusion. Nanocomposite samples showed no significant alteration (color and microhardness) after bleaching. Thus, no replacement of restorations is required after bleaching.

scholarly journals Dental Bleaching with 35 and 38% Hydrogen Peroxide and Immersion in Soft Drink: Analysis by Reflectance and Fourier Transform-Raman Spectroscopy

2011 ◽  
Vol 2 (4) ◽  
pp. 285-291
Author(s):  
Carlos Rocha Gomes Torres ◽  
Raffaela Di Iorio Jeronymo ◽  
Eduardo Galera da Silva ◽  
Maria Filomena Rocha Lima Huhtala ◽  
Ana Paula Martins Gomes ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Raman Spectroscopy ◽  
Mineral Content ◽  
Soft Drink ◽  
Significant Loss ◽  
Fourier Transform Raman Spectroscopy ◽  
Before And After ◽  
Ft Raman Spectroscopy ◽  
Reflectance Analysis ◽  
Ft Raman

ABSTRACT Objective The aim of this study was to evaluate the effects of dental bleaching with 35 and 38% hydrogen peroxide and soft drink immersion on the chemistry and color of the bovine enamel fragments before and after treatment using reflectance and Fourier transform-Raman spectroscopy (FT-Raman spectroscopy). Materials and methods Sixty bovine enamel fragments were prepared and randomly divided into six experimental groups according to the hydrogen peroxide gel concentration or immersion in soft drink (n = 10): G1-Whiteness HP Maxx; G2-Whiteness HP Maxx + light lemon coke immersion; G3-Opalescence Xtra Boost; G4-Opalescence Xtra Boost + light lemon coke immersion; G5-Whiteform Perox Red Form gel; G6-Whiteform Perox Red Form gel + light lemon coke immersion. The bleaching treatment was performed in two sessions with a 7 days interval and the analysis before treatments were used as control (baseline). Samples were submitted to reflectance and FT-Raman spectroscopy analysis to evaluate surface mineral content and the reflectance before and after treatments. Results There was no significant statistical difference among the bleaching agents in the reflectance analysis (p = 0.63). The FT-Raman spectroscopy data showed significant loss in enamel mineral content after immersion in the light lemon coke and statistical significant differences for the interactions between ‘bleaching agent’ and ‘immersion in soft drink’ (p = 0.03) and between ‘bleaching agent’ and ‘time’ (p = 0.04). With regards to the whitened specimens, the Opalescence Xtra Boost agent demonstrated the greatest loss in enamel mineral content. Conclusion All bleaching agents exhibited great bleaching potential in reflectance analysis. This highly concentrated hydrogen peroxide gel (38%) changed significantly the enamel mineral content with or without immersion in soft drink. The specimens immersed in soft drink showed significant loss in enamel mineral content. Clinical relevance Some investigations have shown that hydrogen peroxide and beverages can modify enamel dental components, but more studies are necessary to explain its effects.

scholarly journals THE EFFECT OF THE TRACTION THERAPY ON PATIENTS WITH LUMBAR DISC DISEASE

2021 ◽  
Author(s):  
Mariyana Mihaylova ◽  
◽  
Keyword(s):  
Quality Of Life ◽  
Lumbar Disc ◽  
Treatment Protocol ◽  
Control Group ◽  
Physical Factors ◽  
Disc Disease ◽  
Lumbar Disc Disease ◽  
Treatment Protocols ◽  
Before And After

The goal of this research is to examine the efficiency of a set of physical factors with the inclusion of traction therapy in treating lumbar static and dynamic pain and the opportunities to influence the quality of life of patients with lumbar disc disease (LDD).100 patients with lumber disc disease participated in the clinical study. They were equally divided into a control group (CG), which has been treated with basic therapy (LFMF and IFC) and experimental group (EG) where traction therapy was part of the treatment protocol. For evaluating the effectiveness of the treatment was used quantitative assessment for static and dynamic pain and the quality of life before and after thetreatment. Results of both treatment protocols have statistically significant effect (p<0,001) in reducing low back pain and improving the quality of life. In comparison between the two groups, EG has a statistically significant (p<0,001) advantage over the CG. The inclusion of extension therapy in basic physical therapy gives excellent results, contributes to a more significant reduction ofpain and improves the quality of life of patients.

Effects of Light Activated In-office Bleaching on Permeability, Microhardness, and Mineral Content of Enamel

2014 ◽  
Vol 39 (5) ◽  
pp. E225-E230 ◽  
Author(s):  
SO Parreiras ◽  
P Vianna ◽  
S Kossatz ◽  
AD Loguercio ◽  
A Reis
Keyword(s):  
Mineral Content ◽  
Phosphorus Content ◽  
Artificial Saliva ◽  
Control Group ◽  
Light Activation ◽  
Data Set ◽  
Copper Sulphate Solution ◽  
X Ray ◽  
Rubeanic Acid ◽  
Bleaching Treatment

SUMMARY The aim of this study was to evaluate the permeability (PE), microhardness (KHN), and mineral change in enamel after LED/laser activated in-office bleaching. For PE, the coronal portion of premolars (n=51) was subjected to bleaching with 35% hydrogen peroxide (Whiteness HP Maxx, FGM Dental Products, Joinville, SC, Brazil). The samples were stained via the histochemical method, which involves a copper sulphate solution and rubeanic acid. The penetration of dye into the enamel was measured. The KHN of enamel was assessed before treatment, immediately after the bleaching treatment, and again after one week. The calcium and phosphorus content were analyzed with a scanning electron microscope with energy-dispersive X-ray (JSM 6360LV, Jeol Ltd, Tokyo, Japan). The data set from each test was subjected to appropriate parametric statistical analysis (α=0.05). No significant differences were observed for PE in NLA and LA compared to the control group (p=0.98), as well as for calcium (p=0.16) and phosphorus (p=0.80) content. Significant reduction of KHN after bleaching occurred for both groups (p&lt;0.001). After immersion in artificial saliva, the KHN of the enamel for all groups was similar to that seen before bleaching. Light activation during in-office bleaching does not produce significant changes in the enamel compared to a non–light-activated technique.

scholarly journals The effect of integrative rehabilitation treatment on upper extremity ability of patients with central nervous system injury

2021 ◽  
Vol 3 (1) ◽  
pp. 071-078
Author(s):  
Jung-Ho Lee
Keyword(s):  
Upper Extremity ◽  
Treatment Protocol ◽  
Extracorporeal Shock Wave Therapy ◽  
Treatment Method ◽  
Control Group ◽  
Rehabilitation Treatment ◽  
Extracorporeal Shock Wave ◽  
Before And After ◽  
General Exercise ◽  
Experimental Group

Purpose: The aim of this study was to test and develop a rehabilitation treatment protocol that maximizes the improvement of upper limb. In addition, this study was conducted to present a basic protocol for an integrative rehabilitation treatment method. Methods: Patients diagnosed with stroke and exhibiting movement disorders in paralyzed limbs were randomly assigned to an experimental group and a control group. The experimental group received proprioceptive neuromuscular facilitation, extracorporeal shock wave therapy, and taping therapy. The control group received general exercise therapy and functional electrical stimulation. The treatment program for each group was conducted two times a week for four weeks, and exercise was performed for 60 minutes per session. Results: There were statistically significant differences in the grip power with muscular strength of the shoulder joint flexor, extensor, adductor and abductor muscles before and after treatment in the experimental group and control group. Conclusion: In conclusion, in order to improve upper extremity ability, a treatment method that can be applied at the same time and a method for managing the cause of the patient's limitations must be applied together.

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