scholarly journals Mechanical Characterization of Two Dental Restorative Materials after Acidic Challenge

2021 ◽  
Vol 5 (1) ◽  
pp. 31
Author(s):  
Ana Coelho ◽  
Anabela Paula ◽  
Inês Amaro ◽  
Carlos Miguel Marto ◽  
Nuno Costa ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Mechanical Characteristics ◽  
Dietary Habits ◽  
Composite Resin ◽  
Soft Drink ◽  
Glass Ionomer ◽  
Restorative Materials ◽  
Acidic Beverages ◽  
Dental Restorative

The aim of this study was to determine the effect of acidic beverages on the mechanical characteristics of a nanofilled composite resin and of a glass ionomer. Thirty specimens of each restorative material were produced and were evaluated at three different time points: before immersion (T0), after a 7 day immersion (T1) and after a 14 day immersion (T2) in water, beer and a soft drink. The studied parameters were microhardness and surface roughness. At T2, composite resin and glass ionomer specimens immersed in water, beer and the soft drink showed a statistically significant decrease in microhardness compared to T0 results. The surface roughness of composite resin specimens decreased between T0 and T1/T2 after immersion in beer and soft drink. A statistically significant increase was found between the roughness of glass ionomer specimens immersed in each one of the beverages at T0 and T1/T2. It is essential that clinicians are aware not only of available restorative materials, its characteristics and best handling techniques but also of the importance of performing an adequate assessment of patients’ dietary habits, thus making it possible to offer patients quality treatments with a predictable prognosis and longevity.

Effect of Common Daily Acidic Beverages on the Surface Roughness of Glass Ionomer-Based Dental Restorative Biomaterials

2019 ◽  
Vol 45 (6) ◽  
pp. 496-502
Author(s):  
Didem Ozdemir-Ozenen ◽  
Elif Sungurtekin-Ekci ◽  
Gurkan Ozenen ◽  
Meltem Ozdemir-Karatas
Keyword(s):  
Surface Roughness ◽  
Glass Ionomer ◽  
Acidic Beverages ◽  
Dental Restorative

EFEITO DO DESAFIO EROSIVO IN VITRO NA MASSA E RUGOSIDADE SUPERFICIAL DE DIFERENTES MATERIAIS RESTAURADORES

2016 ◽  
Author(s):  
Thereza Christina Lopes Coutinho
Keyword(s):  
Surface Roughness ◽  
Orange Juice ◽  
Composite Resin ◽  
Soft Drink ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
All Solutions ◽  
Post Hoc ◽  
Ionomer Cement

RESUMO O objetivo deste estudo in vitro foi avaliar alteração de massa e de rugosidade superficial utilizando balança eletrônica e rugosímetro respectivamente, de quatro materiais odontológicos: resina composta (RC), selante resinoso (SR), cimento de ionômero de vidro resinoso (CIVR) e cimento de ionômero de vidro (CIV) convencional após serem submetidos à desafio erosivo (DE). Foram confeccionados 24 corpos de prova de cada material sendo divididos em 3 grupos (N=8): GI – bebida carbonatada a base de cola (Coca cola®; pH 2.6); GII – suco de laranja a base de soja (Ades®; pH 4.4); e GIII – saliva artificial (SA) (pH 7; controle). DE foi realizado através de imersão nas respectivas soluções (20mL/amostra) durante 3x/5min/dia por cinco dias. As amostras foram armazenadas em SA entre os DE e pernoite. Os dados foram analisados estatisticamente no software SPSS v.20 através dos testes ANOVA, post-hoc de Tukey, Kruskal-Wallis e Student-Newman Keuls com nível de significância de p<0,05. Observou-se que, todos os materiais apresentaram alteração de massa, sendo que RC e SR apresentaram aumento, porém significante (p<0,01) apenas para SR; já CIVR e CIV tiveram perda significativa (p<0,01). Em relação à rugosidade, todas as soluções promoveram alteração, porém não significativa (p>0,05). Houve aumento da rugosidade da RC no suco de laranja e do SR, no refrigerante e SA. O CIV apresentou aumento da rugosidade no refrigerante e o CIVR, redução em todas as soluções. Concluiu-se que, as soluções testadas promoveram redução de massa e o refrigerante aumento de rugosidade apenas para os materiais ionoméricos, principalmente, o convencional. Palavras-chave: Resina composta, Cimento de ionômero de vidro, Selante de sulcos e fissuras, Erosão   ABSTRACT The aim of this in vitro study was to evaluate mass change and surface roughness using analytical scale and profilometer respectively, of four dental materials: composite resin (CR), resin sealant (RS), resin-modified glass-ionomer cement (RMGIC) and glass-ionomer cement (GIC) for restoration after being submitted to erosive challenge (EC). Twenty-four samples of each material were prepared and divided into 3 groups (n=8): GI- cola soft drink (Coca-Cola®; pH 2.6); GII – soya orange juice (Ades®; pH 4.4); and GIII - artificial saliva (AS) (pH 7; control). EC was conducted by immersion in the respective solutions (20ml/sample) for 3x/5min/day during five days. Samples were stored in AS between EC and overnight. Data were statistically analyzed using SPSS v.20 software through ANOVA, Tukey’s post-hoc, Kruskal-Wallis and Student-Newman- Keuls with significance level of p<0.05. It was observed that all materials had mass change, and CR and SR showed an increase, being significant (p<0.01) only for SR; whereas RMGIC and GIC had significant loss (p<0.01). Regarding the surface roughness, all solutions promoted changes, but not significant (p>0.05). There was an increase in roughness of CR in orange juice and SR in soft drink and AS. GIC showed increased roughness in soft drink and RMGIC, reduction in all solutions. It was concluded that, the tested solutions promoted mass reduction and the soft drink increased roughness only for the ionomeric materials, mainly, the self-cured. Keywords: Composite resin, Glass-ionomer cement, Pit and fissure sealant, Erosion  

Comparative Evaluation of Erosive Potential of Different Pediatric Liquid Medications on Primary Tooth Enamel and Tooth Coloured Restorative Materials

2021 ◽  
Vol 13 ◽  
pp. 30-36
Author(s):  
Dr. Sara Elizabeth Paul ◽  
Dr. Divya Reddy ◽  
Dr. Santhosh T Paul ◽  
Dr. Shuhaib A Rahman
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Tooth Enamel ◽  
Artificial Saliva ◽  
Glass Ionomer Cement ◽  
Titratable Acidity ◽  
Primary Tooth ◽  
Glass Ionomer ◽  
Restorative Materials ◽  
Ionomer Cement

Aim: The aim of the present study was to investigate the erosive potential of pediatric liquid analgesics and their effect on primary enamel, glass ionomer and composite resin restorations. Methods: Selected medications were analysed in triplicates with regard to pH and titratable acidity. Eighteen specimens each of glass ionomer, composite resin and primary enamel were prepared and stored in 100% relative humidity at 37ºC for 7 days. After baseline surface roughness analysis using 3D optical profilometer, specimens were randomly distributed according to immersion media into three groups (n=6) as follows: Group 1- Calpol® ( Paracetamol), Group 2–Ibugesic® (Ibuprofen) and Group 3 –Artificial saliva (control). The specimens were subjected to immersion cycles for 5 days following which surface roughness was measured. Data were analysed using analysis of variance (ANOVA) and Tukey’s test. Results: Ibugesic ® showed the lowest titratable acidity and mean pH when compared to Calpol®. The glass ionomer cement exhibited highest surface roughness followed by primary enamel and composite resin both at baseline and after immersion. The highest mean surface roughness change for glass ionomer cement was observed when exposed to Ibugesic® (0.04 ± 0.13) when compared to Calpol® (0.006 ± 0.01) and artificial saliva (0.035 ± 0.05). Conclusions: Although minimal, the restorative materials and primary enamel subjected to acidic medicines showed surface roughness changes and among the pediatric liquid analgesics tested, Ibugesic® was observed to be highly erosive with lower pH and high titratable acidity

scholarly journals Change in Surface Roughness of Esthetic Restorative Materials after Exposure to Different Immersion Regimes in a Cola Drink

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Navroop Kaur Bajwa ◽  
Anuradha Pathak
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Resin Composite ◽  
Group Iv ◽  
Glass Ionomer ◽  
Group Iii ◽  
Group I ◽  
Resin Modified Glass Ionomer ◽  
Restorative Materials ◽  
Modified Resin

Context. An in vitro study carried out to evaluate and compare the effect of Cola drink on surface roughness of esthetic restorative materials. Purpose. To compare the effect of different immersion regimes in a Cola drink on surface roughness of esthetic restorative materials. Method. Two hundred samples were grouped into 4 equal groups of 50 samples each: Group I: conventional glass ionomer, Group II: resin modified glass ionomer, Group III: polyacid-modified resin composite, Group IV: Composite resin. Each group was further subdivided into 5 subgroups of 10 samples each. Subgroup A (Control Subgroup). Samples were kept immersed in artificial saliva. Subgroup B. Samples were immersed in Cola drink once a day. Subgroup C. Samples were immersed in Cola drink, 3 times a day. Subgroup D. Samples were immersed in Cola drink 5 times a day. Subgroup E. Samples were immersed in Cola drink 10 times a day. Each immersion lasted 5 minutes. The immersion protocol was repeated for 7 days. Results. Maximum surface roughness was seen in Group I conventional glass ionomer cement, followed by Group II resin modified glass ionomer, Group III polyacid modified resin composite, and Group IV composite resin samples. Conclusion. Resistance to change in surface roughness is more in resin based restorative materials as compared to glass ionomer based materials.

scholarly journals Quantification of color variation of restorative materials used on pediatric dentistry after pigmentation

2015 ◽  
Vol 63 (4) ◽  
pp. 383-388
Author(s):  
Luísa Bandeira Pires Monteiro LOPES ◽  
Andreia Sofia Lopes de ARAÚJO ◽  
Virginia Barreiros MILAGRE
Keyword(s):  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Pediatric Dentistry ◽  
Color Variation ◽  
Control Group ◽  
Chocolate Milk ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Restorative Materials

Objective: To quantify the color variation of two glass ionomer cements and a composite resin used in pediatric dentistry, after being immersed in different pigments agents. Methods: Using two glass ionomer cements (Ketac(tm) Molar and Photac(tm) Fil) and a microhybrid composite resin (Filtek(tm) z250), were produced 40 disks of each material (10 mm in diameter and 2 mm thick). The samples were soaked in artificial saliva (control group), coke, peach Ice Tea(r) and chocolate milk, for 72 hours in an oven at 37ºC. After this period, the samples were washed in 50 ml of distilled water. Finally, using the spectrophotometer, it was made the reading of results. The color change was measured according to the CIE L * a * b * system. Color changes were statistically analyzed using parametric one-way ANOVA and ANOVA with Welch correction, the nonparametric Kruskal-Wallis tests and post-hoc Tukey and Dunnet T3 with p≤ 0.05. Results: The immersion of restorative materials in different pigmentation agents caused a significant color variation on the samples. The agent who presented higher results was the Peach Ice Tea(r). The chocolate milk was the fluid with lowest pigmentation capacity of all restorative materials under study. The greater color variation was found on the Ketac(tm) Molar submerged in Coca-Cola(r) and the smallest on the Filtek(tm) z250 in chocolate milk. Conclusion: All restorative materials were shown to be susceptible to pigmentation by all agents. The Filtek(tm) z250 proved to have better color stability, followed by Photac(tm) Fil and finally by Ketac(tm) Molar.

scholarly journals Esthetic restorative materials and glass ionomer cements: Influence of acidic drink exposure on bacterial adhesion

2018 ◽  
Vol 12 (02) ◽  
pp. 204-209 ◽  
Author(s):  
Claudio Poggio ◽  
Lodovico Vialba ◽  
Riccardo Marchioni ◽  
Marco Colombo ◽  
Giampiero Pietrocola
Keyword(s):  
Bacterial Adhesion ◽  
Soft Drink ◽  
Cylindrical Sample ◽  
Bacterial Suspension ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Restorative Materials ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

ABSTRACT Objective: The purpose of this research was to evaluate and compare bacterial adhesion on five esthetic restorative materials, three glass ionomer cements (GIC), and two GIC with coat. All the materials were considered after acidic drink exposure. Materials and Methods: Thirty cylindrical sample of each of the 10 materials were prepared and then divided into three groups: group 1 (baseline), Group 2 (1 day in acidic soft drink), and Group 3 (7 days in acidic soft drink). Bacterial suspension of Streptococcus mutans was cultured and deposited onto each material, and the adhesion was evaluated through the colony-forming units determination. One-way ANOVA and Bonferroni's post hoc tests were applied to estimate significant differences between the esthetic materials. Results: The highest amount of S. mutans was recorded in Group 3 and the lowest in Group 1 (baseline). In general, the GIC showed bacterial adhesion values higher than the ones related to composites both in Group 2 than in Group 3. Acidic soft drinks lead a time-dependent degradation of restorative materials causing an increase of the surface rugosity. In fact, a general increase in S. mutans cells adhesion to treated samples was observed. Conclusions: The use of acidic soft drink resulted in a degradation of the surface layer of the restorative material with consequent increase of bacterial adhesion. The GIC can be considered a more friendly environment for bacterial adhesion. This is true in particular if acid substances have already deteriorated the surface.

Properties of New Glass-Ionomer Restorative Systems Marketed for Stress-Bearing Areas

2020 ◽  
Vol 45 (1) ◽  
pp. 104-110 ◽  
Author(s):  
D Fuhrmann ◽  
D Murchison ◽  
S Whipple ◽  
K Vandewalle
Keyword(s):  
Fracture Toughness ◽  
Composite Resin ◽  
Testing Machine ◽  
Surface Hardness ◽  
Glass Ionomer ◽  
Hardness Tester ◽  
Resin Coating ◽  
Significant Difference ◽  
Restorative Materials ◽  
Post Hoc

SUMMARY Objectives: The purpose of this study was to evaluate the properties (fracture toughness, surface hardness) of newer conventional glass-ionomer restorative materials that are marketed for posterior stress-bearing areas compared with more traditional glass-ionomer restorative materials marketed for non–load-bearing areas and composite-resin restorative materials. Methods and Materials: Notched-beam fracture toughness specimens were created in a mold with each tested material (Equia Forte, GC America, with and without a surface coating of Equia Forte Coat; Ketac Universal, 3M/ESPE; ChemFil Rock, Dentsply; Fuji IX GP Extra, GC; Ionostar Molar, VOCO; Filtek Z250, 3M/ESPE; Filtek Supreme Ultra, 3M/ESPE) and fractured using a universal testing machine after 24 hours of storage. Hardness values were determined on the surface of the fracture toughness specimens using a hardness tester. Data were analyzed with a one-way ANOVA and Tukey's post hoc test per property (alpha=0.05). Results: The composite-resin restorative materials had significantly greater fracture toughness than the glass-ionomer materials. There was no significant difference in fracture toughness between the glass-ionomer materials. The use of a resin coating significantly increased the surface hardness of the newer glass ionomer marketed for stress-bearing areas. Conclusions: Fracture toughness was not improved with the newer glass-ionomer restorative materials marketed for stress-bearing areas compared to the conventional glass-ionomer materials, however a resin coating provided greater surface hardness.

Effect of Restorative Protocol on Cuspal Strain and Residual Stress in Endodontically Treated Molars

2016 ◽  
Vol 41 (1) ◽  
pp. 23-33 ◽  
Author(s):  
RAS Pereira ◽  
AA Bicalho ◽  
SD Franco ◽  
D Tantbirojn ◽  
A Versluis ◽  
...  
Keyword(s):  
Residual Stress ◽  
Fracture Resistance ◽  
Composite Resin ◽  
Glass Ionomer Cement ◽  
Shrinkage Strain ◽  
Glass Ionomer ◽  
Pulp Chamber ◽  
Biomechanical Behavior ◽  
Restorative Materials ◽  
Ionomer Cement

SUMMARY Objectives To evaluate the effect of the restorative protocol on cuspal strain, fracture resistance, residual stress, and mechanical properties of restorative materials in endodontically treated molars. Methods Forty-five molars received mesio-occlusal-distal (MOD) Class II preparations and endodontic treatment followed by direct restorations using three restorative protocols: composite resin (CR) only (Filtek Supreme, 3M-ESPE), resin modified glass ionomer cement in combination with CR (Vitremer, 3M-ESPE in pulp chamber and Filtek Supreme in MOD cavity), conventional glass ionomer cement in combination with composite resin (CGI-CR) (Ketac Fil, 3M-ESPE in pulp chamber and Filtek Supreme in MOD cavity). Cuspal strain was measured using strain gauges, and fracture resistance was tested with an occlusal load. Elastic modulus (EM) and Vickers hardness (VH) of the restorative materials were determined at different depths using dynamic microhardness indentation. Curing shrinkage was measured using the strain gauge technique. The restorative protocols were also simulated in finite element analysis (FEA). The shrinkage strain, cuspal strain, EM, VH, and fracture resistance data were statistically analyzed using split-plot analysis of variance and Tukey test (p=0.05). Residual shrinkage stresses were expressed in modified von Mises equivalent stresses. Results Shrinkage strain values (in volume %) were Ketac Fil (0.08±0.01) &lt; Vitremer (0.18±0.01) &lt; Filtek Supreme (0.54±0.03). Cuspal strain was higher and fracture resistance was lower when using CR only compared with the techniques that used glass ionomer. The EM and VH of the materials in the pulp chamber were significantly lower for glass ionomer. The FEA showed that using CR only resulted in higher residual stresses in enamel and root dentin close to the pulp chamber than the combinations with glass ionomers (RMGI-CR and CGI-CR). Conclusions The choice of restorative protocol significantly affected the biomechanical behavior of endodontically treated molars. Using glass ionomer to fill the pulp chamber is recommended when endodontically treated molars receive direct composite restorations because it reduces cuspal strain and increases fracture resistance.

scholarly journals PENGGUNAAN BAHAN TUMPATAN DI RUMAH SAKIT GIGI DAN MULUT PSPDG FAKULTAS KEDOKTERAN UNSRAT PADA TAHUN 2014

e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Dewi Y. Anang ◽  
Ni Wayan Mariati ◽  
Christy N. Mintjelungan
Keyword(s):  
Composite Resin ◽  
Dental Treatment ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Main Component ◽  
Dental Restorative ◽  
Material Composite ◽  
Ionomer Cement

Abstract: Resin composite has been known since the sixtieth generation and generally it is known as the dentists’ cosmetic restorative material. Amalgam is the oldest restorative material and it is famous due to its mechanical strength, endurance, and less expensive. Glass ionomer cement is an isochromatic tooth dentifrice; its main component is liquid consisted of water and polyacid, and a kind of fluoroaluminosilicate glass powder. This study aimed to obtain the profile of patients using dental restorative composite at the RSGM Manado in 2014. This was a descriptive retrospective study. There were 400 dental samples from the medical record categorized according to gender, age, kinds of treatment, and occupation. The results showed that dental treatment with filling was most frequent among females (65%) compared to males (35%). Most of the subjects (70%) were 21-30 years old. Moreover, most of the subjects (62.5%) used amalgam as the restorative material.Keywords: restorative material, composite resin, amalgam, GICAbstrak: Resin komposit ialah tumpatan pada generasi ke 60-an, dan secara umum dikenal sebagai bahan tumpatan kosmetik dentis. Amalgam merupakan bahan restorasi tertua dan cukup terkenal di masyarakat luas oleh karena kekuatan, daya tahan, dan harganya yang relatif murah. Glass Ionomer Cement ialah bahan tambal sewarna gigi yang komponen utamanya terdiri dari likuid yang merupakan gabungan air dengan polyacid (Asam poliakrilat, maleat, itakonat, tartarat) dan bubuk berupa fluoroaluminosilicate glass. Penelitian ini bertujuan untuk mengetahui gambaran pasien yang menggunakan tumpatan gigi di RSGM Unsrat pada tahun 2014. Jenis penelitian ini deskriptif retrospektif. Jumlah data penelitian yang didapat yaitu 400 sampel data dental dari rekam medik dan dikategorikan sesuai jenis kelamin, usia, jenis perawatan dan pekerjaan. Hasil penelitian menunjukkan perawatan dengan bahan tumpatan lebih sering dilakukan oleh pasien berjenis kelamin perempuan (65%) dibandingkan laki-laki (35%). Distribusi subyek terbanyak pada usia 21-30 tahun (70%). Sebagian besar (62,5%) menggunakan bahan tumpatan amalgam.Kata kunci: tumpatan, resin komposit, amalgam, GIC

Sign in / Sign up

Export Citation Format

Share Document