scholarly journals Comparative evaluation of surface roughness and color stability of nanohybrid composite resin after periodic exposure to tea, coffee, and Coca-cola ” An in vitro profilometric and image analysis study

2020 ◽  
Vol 23 (4) ◽  
pp. 395
Author(s):  
Deepshikha Chowdhury ◽  
Paromita Mazumdar ◽  
Priti Desai ◽  
Pallab Datta
Keyword(s):  
Surface Roughness ◽  
Image Analysis ◽  
Comparative Evaluation ◽  
Composite Resin ◽  
Color Stability ◽  
Analysis Study ◽  
Nanohybrid Composite ◽  
Periodic Exposure

Comparative Evaluation of Solubilities of Two Nanohybrid Composite Resins in Saliva Substitute and Distilled Water: An in vitro Study

2017 ◽  
Vol 7 (2) ◽  
pp. 82-85 ◽  
Author(s):  
Pranjal S Walzade ◽  
Sumanthini MV ◽  
Vanitha U Shenoy ◽  
Rohini P Mahajan
Keyword(s):  
Comparative Evaluation ◽  
Composite Resin ◽  
Composite Resins ◽  
Long Term Results ◽  
P Value ◽  
Distilled Water ◽  
Saliva Substitute ◽  
Significant Difference ◽  
Nanohybrid Composite

ABSTRACT Aim of the study To determine the solubility of nanohybrid (NH) composite resins when immersed in saliva substitute and distilled water. Materials and methods A total of 60 disc-shaped samples (n = 30) were prepared in teflon molds of diameter 10 mm × 2 mm thickness from two NH composite resins. They were light-cured following which the samples were removed and weighed three times using a digital balance. Samples were then immersed in test solutions, i.e., 100 mL of distilled water and saliva substitute each stored for 24 hours and 7, 14, 21, and 28 days in an incubator at 37°C at 100% humidity. At the time intervals mentioned, the samples were removed from the incubator, washed with distilled water, blotted dry, and weighed. Samples were again immersed in fresh test solutions. Difference in preweight and postweight of samples was calculated and data were analyzed using appropriate test by testing normality. A p-value < 0.05 was considered to be significant. Results The results were analyzed using one-way analysis of variance (ANOVA). As observed from the baseline weight to the 28th day weight, there was a loss of weight of the samples in all the groups except NH composite resin (Flash) in distilled water. Conclusion From the results of the study, it was observed that there was no statistically significant difference in weight, with respect to the solubility of the two NH composite resins and the two solutions tested. Clinical significance of the study is that the NH composite resin that shows lesser solubility can be the choice for an esthetic restorative material in patients for long-term results. How to cite this article Mahajan RP, Shenoy VU, Sumanthini MV, Walzade PS. Comparative Evaluation of Solubilities of Two Nanohybrid Composite Resins in Saliva Substitute and Distilled Water: An in vitro Study. J Contemp Dent 2017;7(2):82-85.

scholarly journals A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth restored with Composite Resin Core using Two Different Designs of Prefabricated Metal Posts: An in vitro Study

2017 ◽  
Vol 7 (2) ◽  
pp. 97-102
Author(s):  
Sabita M Ram ◽  
Naisargi Shah ◽  
Amit M Gaikwad
Keyword(s):  
Fracture Resistance ◽  
Comparative Evaluation ◽  
Composite Resin ◽  
Fracture Load ◽  
Endodontically Treated Teeth ◽  
Group I ◽  
Resin Core ◽  
Post And Core ◽  
The Mean

ABSTRACT Aim To comparatively evaluate the fracture resistance of endodontically treated teeth restored with light-cured composite resin core using two different designs of prefabricated metal posts. Materials and methods A total of 30 single-rooted anterior teeth were selected for the study and endodontically treated. Teeth were sectioned 2 mm above the cementoenamel junction and were randomly divided into two groups (n = 15). Teeth in group I were restored with Parallel post—EG post and group II with parallel post with coronal flare—i post. Light-cured composite core buildup was done in all samples using a customized core former. Compressive load was applied at a 135° angle to the long axis of the tooth at a cross-head speed of 1 mm/minute until visible signs of fracture were observed. Levene's test and t-test were used to determine the difference of the failure loads between the groups (α = 0.05). Results The mean values (standard deviation [SD]) for fracture resistance were 295.55 N and 469.59 N for parallel post—EG post and parallel post with coronal flare—i post respectively. Since the p-value for the t-test is less than 0.05, it indicates that we should reject null hypothesis and conclude that the mean fracture load of parallel post with coronal flare—i post is significantly more than that of mean fracture load of parallel post—EG post. Conclusion The study conducted evaluated that the fracture resistance of endodontically treated teeth with parallel post with coronal flare—i post and core buildup had better strength as compared with parallel post—EG post and core buildup. Clinical significance The present study will help the clinician to select the appropriate prefabricated metal post that will fit exactly into the coronal flare of the canal improving clinical performance, thus increasing the longevity of the restoration. How to cite this article Gaikwad AM, Shah N, Ram SM. A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth restored with Composite Resin Core using Two Different Designs of Prefabricated Metal Posts: An in vitro Study. J Contemp Dent 2017;7(2):97-102.

scholarly journals A comparative evaluation of the effect of three different concentrations of in-office bleaching agents on microhardness and surface roughness of enamel – An in vitro study

2021 ◽  
Vol 18 (1) ◽  
pp. 49
Author(s):  
Khushboo Goyal ◽  
SuparnaGanguly Saha ◽  
Anuj Bhardwaj ◽  
MainakKanti Saha ◽  
Kaustubh Bhapkar ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Comparative Evaluation ◽  
In Vitro Study ◽  
Vitro Study

scholarly journals AN IN VITRO COMPARATIVE EVALUATION OF COMMERCIALLY AVAILABLE MOUTH RINSES (ALCOHOL CONTAINING AND ALCOHOL FREE) ON THE MICROHARDNESS OF A NANOFILLED COMPOSITE RESIN RESTORATIVE MATERIAL

2020 ◽  
Vol 8 (8) ◽  
pp. 420-428
Author(s):  
Santhosh P. Sagar ◽  
◽  
Sahadev Chickmagarvalli Krishnegowda ◽  
Praveen Kumar M.R ◽  
Bharath Makonahalli Jaganath ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
Composite Resin ◽  
Restorative Material ◽  
Mouth Rinses

Comparative evaluation of surface roughness of novel resin composite Cention N with Filtek Z350 XT: In vitro study

2019 ◽  
Vol 7 (1) ◽  
pp. 15 ◽  
Author(s):  
Jyothi Nagesh ◽  
Amith Setty ◽  
JayashankaraChatra Marigowda ◽  
Anilkumar Shivanna ◽  
SharathKumar Paluvary ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Comparative Evaluation ◽  
Resin Composite ◽  
In Vitro Study ◽  
Vitro Study

scholarly journals Does the temperature of beverages affect the surface roughness, hardness, and color stability of a composite resin?

2013 ◽  
Vol 07 (02) ◽  
pp. 165-171 ◽  
Author(s):  
Duygu Tuncer ◽  
Emel Karaman ◽  
Esra Firat
Keyword(s):  
Surface Roughness ◽  
Composite Resin ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
The Other ◽  
Control Group ◽  
Baseline Values ◽  
Hardness Values ◽  
Properties Of Composites

ABSTRACT Objective: To investigate the effect of beverages′ temperature on the surface roughness, hardness, and color stability of a composite resin. Materials and Methods: Fifty specimens of the Filtek Z250 composite (3M ESPE, Dental Products, St.Paul, MN, USA) were prepared and initial roughness, microhardness, and color were measured. Then the specimens were randomly divided into five groups of 10 specimens each: Coffee at 70°C, coffee at 37°C, cola at 10°C, cola at 37°C, and artificial saliva (control). After the samples were subjected to 15 min × 3 cycles per day of exposure to the solutions for 30 days, the final measurements were recorded. Results: After immersion in beverages, the artificial saliva group showed hardness values higher than those of the other groups (P < 0.001) and the microhardness values were significantly different from the initial values in all groups except for the control group. Both cola groups showed roughness values higher than the baseline values (P < 0.05), while the other groups showed values similar to the baseline measurements. When ΔE measurements were examined, the 70°C coffee group showed the highest color change among all the groups (P < 0.05). Conclusion: High-temperature solutions caused alterations in certain properties of composites, such as increased color change, although they did not affect the hardness or roughness of the composite resin material tested.

Sign in / Sign up

Export Citation Format

Share Document