Effect of Surface Wetting Resin on the Color Stability and Microhardness of Esthetic Composites

Objective: The aim of this study was to evaluate and compare the effects of the superficial application of two different modeling resins on the surface microhardness and discoloration of composite resins. Material and Methods: The present study used two different composites and modeling resins. The composites were placed in plastic molds. Subsequently, the modeling resins were applied on the surface of the two composite groups. The microhardness and color pertaining to all the groups were evaluated. The current study used the One-Way ANOVA and Kruskal Wallis tests, in order to perform the statistical evaluation (p<0.05). Results: The present study compared the microhardness pertaining to the groups and the highest microhardness values were observed in the Estelite Asteria group (none), whereas the lowest values were observed in the GC Essentia group (Ultradent). Moreover, the current study evaluated the color stability and the greatest discoloration was observed in the control group of the GC Essentia group, whereas the least discoloration was observed in the Estelite Asteria group that included the samples prepared using Ultradent Wetting Resin. Conclusions: The results of the present study demonstrated that the use of modeling resins, which facilitate the placement of composite resins, reduced the microhardness and discoloration of composite resins. The aforementioned effect can be attributed to the variations in the structure of the filling. However, further studies are warranted to support and verify the results of the current study.

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Evaluation the Effect of Different Antioxidants Applied After Bleaching on Teeth Color Stability

Brazilian Dental Science ◽

10.14295/bds.2020.v23i4.2074 ◽

2020 ◽

Vol 23 (4) ◽

pp. 9p

Author(s):

Alperen Degirmenci ◽

Emine Kara ◽

Beyza Unalan Degirmenci ◽

Mutlu Ozcan

Keyword(s):

Green Tea ◽

Color Change ◽

Color Stability ◽

Sodium Ascorbate ◽

Control Group ◽

White Tea ◽

Significant Difference ◽

Treatment Stage ◽

The One ◽

One Way Anova

Objective: Vital bleaching is popular treatment option for discolored teeth. But at post-treatment stage, loss of adhesion is highly reported. Literature focused on antioxidant application for the answer of this issue. The aim of this study is comparing effects of six different antioxidants on color stability of bleached teeth. Material and Methods: This study includes total of 84 extracted intact non-carious lower incisors. 35% hydrogen peroxide was applied on the labial surfaces of specimens in accordance with manufacturer's instructions. The bleached teeth were divided into 7 groups. No antioxidants were applied to the control group. For the experimental groups, the following antioxidants were applied for 10 minutes each: 5% proanthocyanidin, 5% sodium ascorbate, 5% lycopene, %5 green tea, %5 white tea and %5 ?-tocopherol. CIE L*, a* and b* values of the teeth were measured by a spectrophotometer. The data were analyzed using IBM SPSS version 23. Results: The differences between the groups were determined with one-way ANOVA. The one-way ANOVA test revealed a statistically significant difference between the groups (p<0.005). Highest color change was observed in lycopene group and the lowest was belongs to green tea group. Conclusions: Proanthocyanidin, white tea and green tea could be good post-bleaching antioxidant alternatives based on their herbal nature.

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The Parkinsonian Gait Spatiotemporal Parameters Quantified by a Single Inertial Sensor before and after Automated Mechanical Peripheral Stimulation Treatment

Parkinson s Disease ◽

10.1155/2015/390512 ◽

2015 ◽

Vol 2015 ◽

pp. 1-6 ◽

Cited By ~ 13

Author(s):

Ana Kleiner ◽

Manuela Galli ◽

Maria Gaglione ◽

Daniela Hildebrand ◽

Patrizio Sale ◽

...

Keyword(s):

Repeated Measures ◽

Stride Length ◽

Inertial Sensor ◽

Gait Velocity ◽

Control Group ◽

Peripheral Stimulation ◽

Before And After ◽

Spatiotemporal Parameters ◽

The One ◽

One Way Anova

This study aims to evaluate the change in gait spatiotemporal parameters in subjects with Parkinson’s disease (PD) before and after Automated Mechanical Peripheral Stimulation (AMPS) treatment. Thirty-five subjects with PD and 35 healthy age-matched subjects took part in this study. A dedicated medical device (Gondola) was used to administer the AMPS. All patients with PD were treated in off levodopa phase and their gait performances were evaluated by an inertial measurement system before and after the intervention. The one-way ANOVA for repeated measures was performed to assess the differences between pre- and post-AMPS and the one-way ANOVA to assess the differences between PD patients and the control group. Spearman’s correlations assessed the associations between patients with PD clinical status (H&Y) and the percentage of improvement of the gait variables after AMPS (α<0.05for all tests). The PD group had an improvement of 14.85% in the stride length; 14.77% in the gait velocity; and 29.91% in the gait propulsion. The correlation results showed that the higher the H&Y classification, the higher the stride length percentage of improvement. The treatment based on AMPS intervention seems to induce a better performance in the gait pattern of PD patients, mainly in intermediate and advanced stages of the condition.

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Impact of Polishing Systems on the Surface Roughness and Microhardness of Nanocomposites

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-2100 ◽

2017 ◽

Vol 18 (8) ◽

pp. 647-651 ◽

Cited By ~ 3

Author(s):

Yasser Alfawaz

Keyword(s):

Surface Roughness ◽

Composite Materials ◽

Hardness Test ◽

Composite Resins ◽

Control Group ◽

Surface Microhardness ◽

Different Types ◽

One Step ◽

Polishing Procedures ◽

And Performance

ABSTRACT Aim The aim of this article is to evaluate the influence of finishing and polishing techniques on the surface roughness and microhardness of two composite resins with two different types of polishing systems. Materials and methods A total of 30 disk-shaped specimens of nanocomposite Filtek™ Z350 and Ceram-X® were prepared. They were divided into three groups. The control group (n = 10) received no finishing and polishing. The remaining specimens were divided into two groups, and they received polishing and finishing either with PoGo or Sof-Lex system. After the polishing procedures, average surface roughness (Ra) was assessed with a surface profilometer. The microhardness was determined using a Vickers hardness test. The data were tabulated and analyzed. Results The smoothest surfaces were noticed with the control group (Mylar strips) in both composite materials tested. The PoGo one-step polishing system showed significantly better surface roughness compared with the Sof-Lex polishing system. The microhardness did not show any significant variations after finishing and polishing. Conclusion It can be concluded that the use of PoGo® onestep polishing system resulted in smoother surface with both composite materials studied compared with the Sof-Lex system. The finishing and polishing system had little influence on the surface microhardness. Clinical significance The finishing procedure and polishing system can affect the physical properties and performance of resin composites. How to cite this article Alfawaz Y. Impact of Polishing Systems on the Surface Roughness and Microhardness of Nanocomposites. J Contemp Dent Pract 2017;18(8):647-651.

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PEMANFAATAN EKSTRAK BUNGA KECOMBRANG (Etlingera elatior jack R.M.sm) SEBAGAI LARVASIDA NYAMUK (Culex quinquifasciatus Say)

VITEK : Bidang Kedokteran Hewan ◽

10.30742/jv.v10i0.45 ◽

2020 ◽

Vol 10 ◽

pp. 44-49

Author(s):

Indra Rahmawati ◽

Bagus Uda Palgunadi ◽

Lailia Dwi Kusuma Wardhani ◽

Ni Made Dewi Lestari

Keyword(s):

Positive Control ◽

Negative Control ◽

Control Group ◽

Mosquito Larvae ◽

Test Results ◽

Experimental Animals ◽

Flower Extract ◽

The One ◽

One Way Anova ◽

Etlingera Elatior

This study aims to determine the effectiveness of kecombrang flower extract (Etlingera elatior jack R.M.sm) on the death of Culex quenquefasciatus Say larvae. Experimental animals used were Culex quenquefasciatus Say larvae, amounting to 625 tails. The design used was a randomized complete design with 5 treatments and 5 replications. The five treatments consisted of two test groups, namely the treatment group consisting of concentrations of 5%, 10%, 15%, and the control group consisting of positive control namely abate and negative control namely aquades. Observation of mosquito larvae death was done every 2 hours for 12 hours. The data obtained were analyzed using the one-way ANOVA test and continued with the Duncan test. Based on the results of the one way ANOVA calculation the value of sig.0.00 <0.05 means that there are significant differences between treatments. Duncan test results on the treatment of 10% and 15% kecombrang flower extract have the ability as a larvicide high and equal to positive control (abate). Based on the results of the study it was concluded that the extract of kecombrang flower (Etlingera elatior jack R.M.sm) had the ability to larvae against the Culex quenquefasciatus Say mosquito.

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Pengaruh kopi arabika terhadap perubahan warna resin komposit hybrid

e-GIGI ◽

10.35790/eg.5.1.2017.15294 ◽

2017 ◽

Vol 5 (1) ◽

Author(s):

Style V. Sirang ◽

P. S. Anindita ◽

. Juliatri

Keyword(s):

Hybrid Composite ◽

Composite Resin ◽

Composite Resins ◽

Control Group ◽

Control Group Design ◽

Arabica Coffee ◽

Group Design ◽

Hybrid Type ◽

Post Test ◽

One Way Anova

Abstract: Composite resin is one of the restorations used in the field of dentistry due to its good esthetic property. To date, the most commonly used composite resin is the hybrid type. Its weakness is the nature of fluid absorbance that can change its color. This discoloration can caused inter alia by food and beverage consumption. Arabica coffee is mostly consumed by our society, however, it has deposit of chlorogenic acid that might cause discoloration. This study was aimed to assess the influence of arabica coffee to the discoloration of hybrid composite resins. This was a true experimental study with a pre test and post test only control group design. Total samples were 24 composite resins of hybrid type (diameter 5 mm and height 2 mm). Each treatment group consisted of 6 samples. The samples were divided into 4 treatment groups, as follows: 0 day, 3 days, 5 days, and 7 days of immersion in arabica coffee solution. The one-way anova test showed that the influence of arabica coffee solution to discoloration of composite resins was significant (p=0.00). Conclusion: There was a significant influence of the duration of immersion in arabica coffee to discoloration of hybrid composite resinsKeywords: resin composite, discoloration, arabica coffee Abstrak: Resin komposit merupakan salah satu bahan restorasi yang sering digunakan di bidang kedokteran gigi karena memiliki nilai estetik yang baik. Saat ini jenis resin komposit yang sering digunakan yaitu resin komposit tipe hybrid. Resin komposit memiliki kekurangan yaitu sifat absorbansi cairan yang dapat menyebabkan perubahan warna. Salah satu penyebab perubahan warna yaitu makanan dan minuman. Kopi arabika merupakan minuman yang sering dikonsumsi oleh masyarakat dan memiliki kandungan asam klorogenik yang dapat memengaruhi perubahan warna. Penelitian ini bertujuan untuk mengetahui pengaruh kopi arabika terhadap perubahan warna resin komposit hybrid. Jenis penelitian ialaj eksperimental murni dengan pre test dan post test only control group design. Jumlah sampel penelitian yaitu 24 resin komposit tipe hybrid dengan ukuran diameter 5 mm dan tinggi 2 mm, dibagi dalam tiga kelompok. Masing-masing kelompok perlakuan terdiri dari 6 sampel. Sampel dibagi menjadi 4 kelompok yaitu kelompok perlakuan 0 hari, 3 hari, 5 hari, dan 7 hari perendaman dalam larutan kopi arabika. Hasil analisis data dengan uji one way Anova menunjukkan adanya pengaruh kopi arabika terhadap perubahan warna resin komposit (p=0,00). Simpulan: Terdapat pengaruh bermakna dari lama perendaman dalam kopi arabika terhadap perubahan warna resin komposit hybrid. Kata kunci : resin komposit, perubahan warna, kopi arabika

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Effect of surface polishing and oral beverages on the surface profile and color stability of two composite resins – in vitro

International Journal of Current Advanced Research ◽

10.24327/ijcar.2017.2625.0059 ◽

2017 ◽

Vol 6 (3) ◽

pp. 2619-2625

Author(s):

Deepika Thosre Chandhok ◽

◽

Jasmeet Singh Chandhok ◽

Sanjyot Mulay ◽

Grishmi Niswade ◽

...

Keyword(s):

Surface Profile ◽

Color Stability ◽

Composite Resins ◽

Surface Polishing ◽

Effect Of Surface

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TINGKAT KEKERASAN PERMUKAAN RESIN KOMPOSIT AKIBAT MASA KEDALUWARSA MATERIAL

ODONTO Dental Journal ◽

10.30659/odj.5.1.45-48 ◽

2018 ◽

Vol 5 (1) ◽

pp. 45

Author(s):

Yuvika Intan Ristian Putri ◽

Muhammad Dian Firdausy ◽

Niluh Ringga Woroprobosari

Keyword(s):

Surface Hardness ◽

Composite Resins ◽

Control Group ◽

Expiration Date ◽

Control Group Design ◽

Expiry Date ◽

Post Test ◽

Experimental Laboratory ◽

Post Hoc ◽

One Way Anova

Background: Aplication of composites resin in relatively small amount as a restorative material often causing the material reaches its expiry date before all of the material can be used. Composites resin that have passed the expiry date would aﬀect charateristic of the material. The aim of this study was to investigate surface hardness diﬀerence of composite resins based on material expiration date.Methods: This research was an experimental laboratory using post test only with control group design. Samples for this research were 27 divided into 3 groups based on its expiration date (2016, 2018 and 2019). The surface hardness was measured by Shore D Hardness. The result of this research were tested with One Way Anova and Post Hoc test LSD.Result: The lowest surface hardness result was measured on group 1 (81.02SHD) and the highest was group 3 (94.72 SHD). The result of One Way Anova test showed that there was signifcant diﬀerences in all groups (p<0.05). Post Hoc LSD test showed diﬀerence signifcantly between each groups.Conclusion: It can be concluded that there was signifcant diﬀerence of composite resins surface hardness based on material’s expiration date

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Evaluasi Pengaruh Konsentrasi Pati Biji Cempedak (Artocarpus champeden) sebagai Bahan Pengisi pada Formulasi Tablet Paracetamol

Jurnal Surya Medika ◽

10.33084/jsm.v6i2.2127 ◽

2021 ◽

Vol 6 (2) ◽

pp. 111-118

Author(s):

Noval Noval ◽

Rizka Appriliani ◽

Husda Oktaviannoor

Keyword(s):

Control Group ◽

P Value ◽

Wet Granulation ◽

Disintegration Time ◽

Anova Test ◽

Whitney Test ◽

Mann Whitney Test ◽

The One ◽

Artocarpus Champeden ◽

One Way Anova

Cempedak plants are widely distributed in Indonesia, one of which is Kalimantan. Cempedak is a tropical plant, so its potential can be used as an additive in the manufacture of pharmaceutical preparations. Previous studies used cempedak seed starch as a binding agent in tablet formulations. This study aims to determine the effect of variations in concentration and optimum concentration of Cempedak seed starch (Artocarpus champeden) as a filler for Paracetamol tablets. The study used a True Experimental Design design with a posttest-only control group design. Making tablets using the wet granulation method. Data analysis used the one-way ANOVA test followed by the LSD test and the Kruskal-Wallis H test which continued with the Mann Whitney Test as a derivative test of the one-way ANOVA. Granule evaluation includes organoleptic, flow properties, tapping test, and stationary angle test. The results of the evaluation of the granules produced granules produced from each formulation are in accordance with the requirements. Tablet evaluation included organoleptic, uniformity in weight, the hardness of tablet, friability, and disintegration time. The results of the tablet evaluation showed that the maximum concentration of cempedak seeds was found in F1 because it showed the evaluation results that were in accordance with the requirements. In evaluating the uniformity of weight and hardness of tablets with the Kruskal Wallis H test and the Mann Whitney test, the results show that there are differences in each formula with a P-value <0.05. The results of the evaluation of tablet friability and disintegration time with one-way ANOVA test and LSD test showed differences in each formula with a P-value <0.05. Cempedak seed starch (Artocarpus champeden) can be used as a filler in the loading of Paracetamol tablets by the wet granulation method.

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Effect of a Prebrushing Mouthwash on Color Stability of Composite Resins

Journal of Health Sciences ◽

10.17921/2447-8938.2021v22n3p191-194 ◽

2021 ◽

Vol 22 (3) ◽

pp. 191-194

Author(s):

Ângela Dalla Nora ◽

Camila da Silva Rodrigues ◽

Rachel de Oliveira Rocha

Keyword(s):

Composite Resin ◽

Color Change ◽

Test Group ◽

Color Stability ◽

Composite Resins ◽

Control Group ◽

Water Control ◽

Dental Tissues ◽

Evaluation Time ◽

Materials Used

AbstractDespite composite resins capacity to mimic dental tissues, they can discolor over time. However, there is no information on the effect of prebrushing mouthwashes on the composite resin staining. This study aimed to evaluate the effect of prebrushing mouthwashes on the color stability of three composite resins. Twenty specimens of each resin were prepared: Filtek Z250 (3M ESPE –S Paul, MN, USA), Charisma (Heraeus Kulzer GmbH - Hanau - Germany) e EvoluX (Dentsply- Petrópolis - Brazil). Groups were randomly divided accord to the treatment: immersion in prebrushing mouthwash (test group) or immersion in deionized water (control group). Test groups were immersed in 10 ml of prebrushing mouthwash Plax Magic (Colgate-Palmolive, São Bernardo do Campo, SP, Brazil) for 60 s three times a day during 35 days following the manufacturer’s instructions. Color measurements were performed after 24 h of specimen’s preparation and after 7, 14, 21, and 35 days of immersion time. Results showed that prebrushing mouthwash Plax Magic promoted a color change in all the tested materials and evaluation time. The color change was greater in composite resin Charisma, followed by Z250 and EvoluX. Therefore, prebrushing mouthwash promoted a color change in all the materials used. Composite resin Charisma demonstrated less color stability than Filtek Z250 resin and EvoluX resin, which was the most stable.Keywords: Composite Resins. Oral Hygiene. Color.ResumoApesar da capacidade das resinas compostas de mimetizar os tecidos dentais, esses materiais podem ter sua cor alterada com o tempo. No entanto, não há informação na literatura sobre o efeito de evidenciadores de placa na estabilidade de cor desses materiais. Este estudo teve por objetivo avaliar o efeito de um evidenciador de placa na estabilidade de cor e três resinas compostas. Para isso, 20 espécimes de cada resina foram preparados: Filtek Z250 (3M ESPE –S Paul, MN, EUA), Charisma (Heraeus Kulzer GmbH - Hanau - Alemanha) e EvoluX (Dentsply- Petrópolis - Brasil). Os grupos foram aleatoriamente divididos de acordo com o tratamento a ser submetido: imersão no evidenciador de placa (grupo teste) ou imersão em água deionizada (grupo controle). Os grupos teste foram imersos em 10 ml do evidenciador de placa Plax Magic (Colgate-Palmolive, São Bernardo do Campo, SP, Brasil) por 60 s três vezes por dia durante 35 dias, de acordo com a orientações de uso do fabricante. As leituras de cor foram feitas após 24 h da preparação dos espécimes e após 7, 14, 21 e 35 dias de imersão. Os resultados mostraram que o evidenciador de placa Plax Magic promoveu alteração de cor em todos os materiais usados e em todos os tempos de leitura. A alteração de cor foi maior na resina Charisma, seguida da Z250 e EvoluX. Portanto, o evidenciador de placa promove alteração de cor em todos os materiais testados. A resina composta Charisma demonstrou menor estabilidade de cor que as resinas Z250 e EvoluX, que, por sua vez, foi a mais estável. Palavras-chave: Resinas Compostas. Higiene Oral. Cor.

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