scholarly journals Evaluation of the Cuspal Deflection of Premolars Restored with Different Types of Bulk Fill Composite Restorations (A comparative in vitro study)

2018 ◽  
Vol 11 (2) ◽  
pp. 751-757 ◽  
Author(s):  
Zahraa Abdulaali Jlekh ◽  
Zainab M. Abdul-Ameer
Keyword(s):  
In Vitro Study ◽  
Reference Points ◽  
Vitro Study ◽  
Restorative Material ◽  
Composite Restorations ◽  
Restorative Materials ◽  
Digital Microscope ◽  
Group B ◽  
Group D

This in vitro study aimed to assess and compare premolars cuspal deflection that restored with different bulk fill resin materials types (SonicFillTM2, Beautifil Bulk Fill restorative, and FiltekTM Bulk Fill posterior restorative) to those incrementally restored group with conventional composite restorations (low shrinkage universal Tetric Evoceram). A total of 40 intact human maxillary first premolars were prepared into large MOD. Then teeth were randomly classified into four groups (n=10 for each group) according to restorative materials as following: Group A: Teeth were restored with Sonic FillTM2 composite, Group B: restored with Beautifil Bulk Fill restorative material, Group C: Teeth were restored with Filtek BulkTM Fill posterior restorative, and Group D: Teeth were restored with Universal Tetric Evo Ceram®. Digital microscope was used to measure intercuspal distance between two index reference points on the tips of the cusps before preparation, after preparation, and 15minutes after completion of restorations. The differences registered as cuspal deflection. All teeth were exposed to inward cuspal deflection after restoration and all groups that restored with bulk fill restoration reported lower cuspal deflection in compared to group D that restored with conventional composite in layering technique. Beautifil Bulk Fill restorative produced significantly greater cuspal deflection than other bulk fill groups. The study concluded that the use of new bulk fill restorative materials might reduce amount of cuspal deflection significantly. However, type of bulk fill restorative materials also influenced on amount of cuspal deflection so restoration with Sonic Fill™2 composite and Filtek Bulk™ Fill posterior reported lower cuspal deflection than Beautifil Bulk Fill restorative material.

scholarly journals Evaluation of the Effect of Water on Three Different Light Cured Composite Restorative Materials Stored in Water: An In Vitro Study

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Basawaraj Biradar ◽  
Sudharani Biradar ◽  
Arvind MS
Keyword(s):  
Water Absorption ◽  
Physical And Mechanical Properties ◽  
In Vitro Study ◽  
Vitro Study ◽  
Weight Changes ◽  
Significant Difference ◽  
Restorative Materials ◽  
Group A ◽  
Group B

Objectives. The objective of this in vitro study was to investigate whether weight gain or loss in the three different composites occurs due to water absorption when they are stored in water.Methods. The composite restorative materials selected for this study included a microfine hybrid (Synergy) and two nanofilled composite restorative materials (Ceram X and Filtek Supreme Ultra). Twenty specimens of each material were fabricated of each composite material. Group A: Filtek Supreme Ultra, Group B: Synergy, Group C: Ceram X. Then all the specimens were stored in 10 ml Distilled water containing test tubes and placed in incubator at 37°C for six weeks. The weight changes of these specimens were measured daily for the first week and later once a week for next five weeks by using an electrical analytical balance.Results.The data was analyzed by one-way analysis of variance and Student'sttest. All groups showed maximum amount of water absorption in the first week than gradual decrease in the water absorption from the second to the sixth week, as compared to the first week and there is no statistically significant difference between the groups tested.Conclusion. All the composite restorative material absorbs some amount of water. The water absorption of the composite may decrease the physical and mechanical properties of the composites; hence it is necessary to consider the type of the material before starting the treatment.

scholarly journals Comparative evaluation of sorption and solubility of Amalgomer CR and Cention N restorative material- An in vitro study

2021 ◽  
Vol 5 (3) ◽  
pp. 122-125
Author(s):  
Krishna Prasada ◽  
◽  
Hithysh T Vidhyadhara ◽  
Keyword(s):  
Artificial Saliva ◽  
In Vitro Study ◽  
Low Ph ◽  
Vitro Study ◽  
Dietary Habit ◽  
Restorative Material ◽  
Group I ◽  
Restorative Materials ◽  
Carbonated Drinks

Introduction: The potential of direct restorative dental materials to resist masticatory force, without getting damaged and to remain unaffected after getting exposed to various media (chemical stability) in the mouth for a considerable period of time are important for their good clinical performance. Amalgomer CR is a ceramic reinforced posterior GIC having compressive, flexural and tensile strength close to that of amalgam. Cention N is a new material based on “alkasite” technology which is a subgroup of the composite resin. It is a novel bulk fill direct posterior restorative material. Every restorative material should meet the required ideal physical properties standards, among which water sorption and solubility are two important properties that influences the clinical durability of a restorative material. Chemical agents found in soft drinks and other beverages like coffee and tea can be exposed to restorative materials, continuously or intermittently. The modern dietary habit of frequent consumption of low pH carbonated drinks can alter the oral environment to an acidic range. Keeping all the above discussed factors in mind, this, in-vitro study was conducted to compare and evaluate the sorption and solubility of Cention N and Amalgomer CR in four direct solutions; Sprite, Pepsi, Coca Cola and artificial saliva. Aim: The aim and objective of this in-vitro study was to evaluate the sorption and solubility of Cention N and Amalgomer CR in four direct solutions; Sprite, Pepsi, Coca Cola and artificial saliva. Materials and methods: The materials that was used for this study are Cention N and Amalgomer CR. A total of forty samples of restorative material were prepared using a metallic mould and divided into two groups of twenty samples each (n=20); Group I: Cention N and Group II: Amalgomer CR. The weight before immersion in the test media (m1) was measured using digital analytical scale. Each group was subdivided into four subgroups (n=5) based on the test media they were immersed in; Subgroup 1: artificial saliva, Subgroup 2: Coco Cola, Subgroup 3: Pepsi, Subgroup 4: Sprite. Five specimens each of the test material were kept immersed in the test media for seven days. The weight of the samples after immersion (m2) in the test media after seven days and the final dry weight of the samples (m3) were measured. Sorption and solubility of Cention N and Amalgomer CR cement were calculated using ISO guidelines. Data was analyzed statistically using appropriate statistical tools. Results: In our study, both Amalgomer CR & Cention N showed values for sorption and solubility well under the values of ISO recommendations, however, Amalgomer CR had significantly more sorption and solubility when compared to Cention N. Among the test solutions used Sprite and Pepsi had the most degrading effect on Cention N and Amalgomer CR. Conclusion: The composition of material along with their setting / curing method and low pH carbonated drinks can influence the properties of direct esthetic restorative materials. In this present study, Cention N was marginally better when compared to Amalgomer CR.

scholarly journals Assessing Fracture Resistance of Restored Premolars with Novel Composite Materials: An In Vitro Study

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Zahraa Abdulaali Al-Ibraheemi ◽  
Huda Abbas Abdullah ◽  
Nada Abdlameer Jawad ◽  
Julfikar Haider
Keyword(s):  
Fracture Resistance ◽  
Testing Machine ◽  
In Vitro Study ◽  
Vitro Study ◽  
Resistance Testing ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Group D

During restorative treatment, premolars restored with resin filling materials using the conventional incremental-fill technique take longer restoration time and undermine the integrity of the tooth. The aim of this study was to assess fracture resistance of premolars restored by various types of novel bulk-fill composite resin materials. Forty-eight (n = 48) freshly extracted sound maxillary first premolars were used in this in vitro study. The teeth were divided into six groups, each having 8 specimens. Group A (positive control) was allocated for the intact teeth. For specimens in Groups B to F, a large cavity (Class-II MOD) was prepared with a standardized dimension of cavity (3 mm depth on the pulpal floor, 4 mm at the gingival seat, and 3 mm cavity width). Group B represented prepared teeth without any restoration. Group C, Group D, Group E, and Group F were restored with Tetric EvoCeram® incremental-fill (conventional), Beautifil bulk-fill, Filtek posterior bulk-fill, and SonicFill 2 bulk-fill restorative materials, respectively. All samples were finished and polished with an enhanced finishing kit and stored in distilled water for a month before the fracture resistance testing. All the samples were exposed to the axial loading (the speed of crosshead was 1 mm/min) in a computer-controlled universal testing machine (LARYEE, China) via a steel bar (6 mm in diameter) and the maximum applied force in Newton was recorded as the fracture resistance. One-way analysis of variance (SPSS 21) was used to compare the fracture resistance within the groups, and Tukey’s post hoc test was used to determine the difference between the groups. The lowest value of fracture resistance was recorded for Group B, and the highest value was recorded for Group A followed by the values of Group D, Group C, Group F, and Group E. One-way ANOVA revealed a statistically significant difference between the groups ( P < 0.05 ). Nonsignificant difference was found between the premolars restored by bulk-fill and conventional composites. Among the bulk-fill restored specimens, Beautifil restorative demonstrated significantly higher fracture resistance in comparison with the other two bulk-fill restored specimen groups (SonicFill 2 and Filtek). Bulk-fill composite such as Beautifil could be an alternative option to conventional incremental-fill composite for premolar restoration.

scholarly journals Comparative Evaluation of Microleakage in Restored Primary Molars using Conventional and Chemomechanical Removal of Carious Tissue: An in vitro Study

2016 ◽  
Vol 6 (2) ◽  
pp. 108-113
Author(s):  
Yalamanchili Samatha ◽  
Charishma Birra ◽  
Sujatha Bandi ◽  
Mahesh Chinta ◽  
Sridevi Enuganti ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
In Vitro Study ◽  
Vitro Study ◽  
Primary Molars ◽  
Restorative Material ◽  
Tooth Discoloration ◽  
Group A ◽  
Caries Removal ◽  
Group B

ABSTRACT Background and objective Microleakage of restored teeth can be considered as a major contributing factor for the occurrence of tooth discoloration, secondary caries, deterioration of restorative material, postoperative tooth sensitivity, and pulpal irritation. The objective of this study was to compare the microleakage of primary molars restored with conventional glassionomer cement (GIC) and Giomer after caries removal using conventional cavity preparation (CCP) and chemo-mechanical caries removal (CMCR) techniques. Materials and Methods Sixty extracted carious human primary molars were randomly assigned into three groups of 20 each based on the method of caries removal: Group A: CCP technique; group B: CMCR using Papacarie gel; and group C: CMCR using Carisolv gel. Each group was further divided into two of 10 teeth each according to the restorative material used – conventional GIC (Fuji II) and Giomer (Beautifil II). The restored teeth were thermocycled, immersed in methylene blue dye, sectioned, and examined under stereomicroscope to elicit the dye penetration scores. Results The results demonstrated that none of the restorative materials were free from microleakage. In Fuji II samples highest microleakage scores were noticed in group A (2.09) followed by group B (0.64), and least in group C (0.27), which were statistically significant. However, in Giomer samples no statistical significant difference in microleakage scores was noticed among the three groups. Conclusion Chemo-mechanical caries removal technique showed less microleakage when compared to CCP technique and the marginal sealing ability of Giomer was superior to conventional GIC. How to cite this article Sankar AJS, Birra C, Bandi S, Chinta M, Enuganti S, Mukthineni S. Comparative Evaluation of Microleakage in Restored Primary Molars using Conventional and Chemomechanical Removal of Carious Tissue: An in vitro Study. J Contemp Dent 2016;6(2):108-113.

EFFECT OF HUMAN ENAMEL ON WEAR OF THREE TYPES OF INTERIM RESTORATIVE MATERIALS (AN IN-VITRO STUDY)

2017 ◽  
Vol 63 (4) ◽  
pp. 3933-3945
Author(s):  
Khaled Haggag ◽  
Muhammad Abbas ◽  
Zainab EL Sharkawy
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Human Enamel ◽  
Restorative Materials

scholarly journals The behaviour of composites, glass ionomers and compomers in erosive conditions – in vitro study

2014 ◽  
Vol 60 (5) ◽  
pp. 200-203
Author(s):  
Andreea Borş ◽  
Cristina Molnar-Varlam ◽  
Melinda Székely
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Erosive Wear ◽  
In Vitro Study ◽  
Vitro Study ◽  
Initial Surface ◽  
Dental Filling ◽  
Filling Materials ◽  
Restorative Materials

Abstract Objective: The aim of this in vitro study was to evaluate the influence of erosive conditions on the wear resistance of aesthetic direct restorative materials. Methods: Six dental filling materials were tested: two composites (Filtek Z550 and X-tra fil), two compomers (Dyract Extra and Twinky Star) and two glass ionomers (Ketac Molar and Fuji II LC). Twenty disks (10mm×2mm) of each material were prepared (n=120) and kept in artificial saliva at 37˚C for 24 hours. Specimens were cycled in acidic soft drink (Coca-Cola) 5×/day, for 5’, over 30 days. Initial surface roughness ISR (Ra-μm) and final surface roughness FSR were measured using a profilometer. The wear rate was calculated as difference of final minus the initial roughness (ΔSR=FSR-ISR). For statistical analysis t-test and one-way ANOVA test were used by GraphPad Prism version 5.03 statistical software. The level of significance was set at p<0.05. Results: The erosive wear rates (mean±SD, μm) after exposure to acidic beverage were: 0.30±0.03 (Ketac Molar), 0.28±0.04 (Fuji II LC), 0.27±0.00 (Filtek Z550), 0.23±0.01 (X-tra fil), 0.20±0.00 (Twinky Star) and 0.14±0.01 Dyract Extra, respectively. There were significant differences between the tested materials (p<0.05). Conclusions: Dental filling materials had different behaviour under the same erosive condition, however all investigated aesthetic restorative materials showed surface degradation. These findings suggest that erosive wear resistance of tooth coloured restoratives could influence their longevity in intraoral acidic conditions. Acknowledgements: The study was supported by the Internal Research Grant no. 5/30.01.2013 of the University of Medicine and Pharmacy of Tirgu Mureş.

Effect of two fluoride varnishes on the color stability of three resin-based restorative materials: an in vitro study

2015 ◽  
Vol 7 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Raha Tafaroji ◽  
Mina Biria ◽  
Farhad Ameri ◽  
Hassan Torabzadeh ◽  
Pasha Qahari ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Color Stability ◽  
Vitro Study ◽  
Restorative Materials

scholarly journals Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1700
Author(s):  
Atsushi Kameyama ◽  
Aoi Saito ◽  
Akiko Haruyama ◽  
Tomoaki Komada ◽  
Setsuko Sugiyama ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Restorative Material ◽  
Glass Ionomer ◽  
Zinc Oxide Eugenol ◽  
Restorative Materials ◽  
Ionomer Cement

This study aimed to examine the marginal seal between various commercial temporary restorative materials and exposed dentin/built-up composite. Sixty bovine incisors were cut above the cemento-enamel junction, and half of the dentin was removed to form a step, which was built up using flowable resin composite. The root canals were irrigated, filled with calcium hydroxide, and sealed using one of six temporary sealing materials (hydraulic temporary restorative material, temporary stopping material, zinc oxide eugenol cement, glass-ionomer cement, auto-cured resin-based temporary restorative material, and light-cured resin-based temporary restorative material) (n = 10 for each material). The samples were thermocycled 500 times and immersed in an aqueous solution of methylene blue. After 2 days, they were cut along the long axis of the tooth and the depth of dye penetration was measured at the dentin side and the built-up composite side. For the margins of the pre-endodontic resin composite build-up, the two resin-based temporary restorative materials showed excellent sealing. Hydraulic temporary restorative material had a moderate sealing effect, but the sealing effect of both zinc oxide eugenol cement and glass-ionomer cement was poorer.

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