scholarly journals Arresting simulated dentine caries with adjunctive application of silver nitrate solution and sodium fluoride varnish: an in vitro study

2017 ◽  
Vol 67 (4) ◽  
pp. 206-214 ◽  
Author(s):  
Irene Shuping Zhao ◽  
May Lei Mei ◽  
Quan-Li Li ◽  
Edward Chin Man Lo ◽  
Chun-Hung Chu
Keyword(s):  
Silver Nitrate ◽  
Sodium Fluoride ◽  
Nitrate Solution ◽  
In Vitro Study ◽  
Silver Nitrate Solution ◽  
Vitro Study ◽  
Fluoride Varnish

Planar Morphology of Silver Leakage at Resin-Dentin Adhesion Interface

2014 ◽  
Vol 1058 ◽  
pp. 329-334
Author(s):  
Xin Yi Zhao ◽  
Shi Bao Li ◽  
Xu Gong
Keyword(s):  
Silver Nitrate ◽  
Composite Resin ◽  
Nitrate Solution ◽  
In Vitro Study ◽  
Silver Nitrate Solution ◽  
Third Molars ◽  
Silver Deposition ◽  
Short Tree ◽  
Ammoniacal Silver

The objectives of this in vitro study is to display the overall planar morphology of leakage at resin-dentin interface using ammoniacal silver nitrate as tracer. Twelve human extracted third molars were used and the occlusal enamel of each tooth was removed. All teeth were divided into four groups of three teeth each and bonded with one of four adhesives (Prime&Bond NT, Adper Prompt, Xeno III, Clearfil S3 Bond) and then a composite resin crown was built up. After storage in water (37°C) for 24 h, all teeth were vertically serially sectioned into stick-shaped specimens the bond interfaces. All specimens were immersed in ammoniacal silver nitrate solution, followed by developing solution and subjected to tensile test and the fracture surface were observed with a SEM. The overall planar morphology of leakage at resin-dentin interface appeared to be various tree-like figures, with character of stem-like portion in the periphery and extending from the periphery to the center of the fractured surface and stretching out a lot of branches. Prim&bond NT presented a couple of big tree-like silver deposition extending to center besides many short tree-like figures located along the periphery. Adper Prompt showed short tree-like figures with many branches. Xeno III displayed tree-like figures with thinner stem portion and more branches. Clearfil S3 Bond presented many short shrub-like figures with fewer branches.

scholarly journals Influence of gamma irradiation on the restorative interface and surface morphology of bulk fill dental composites

2021 ◽  
Vol 10 (4) ◽  
pp. e53910414348
Author(s):  
Laís César de Vasconcelos ◽  
Gabriela Queiroz de Melo Monteiro ◽  
Andréa dos Anjos Pontual ◽  
Flávia Maria de Moraes Ramos-Perez ◽  
Julyana de Araújo Oliveira ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Gamma Irradiation ◽  
Silver Nitrate ◽  
Nitrate Solution ◽  
In Vitro Study ◽  
Silver Nitrate Solution ◽  
Control Group ◽  
Resin Composites ◽  
Marginal Integrity

Objective: The purpose in this in vitro study was to evaluate the influence of gamma irradiation on the marginal integrity and surface morphology of bulk fill resin composites by Microcomputed tomography (μ-CT) and Scanning Electron Microscopy (SEM). Methods: class I cavities (3 mm deep) were prepared in 60 third molars restored with the following resin composites: Filtek™ Bulk Fill (FBF), TetricEvoCeram Bulk Fill (TBF), X-tra Fil Bulk Fill (XTA) and Filtek™ Z350 (Z350) (n = 15). The samples were immersed in 50% silver nitrate solution, scanned and subdivided according to the gamma radiation doses (Control group – no radiation, 30 and 60 Gy). After irradiation, the teeth were again immersed in silver nitrate and scanned. For morphological analysis, 12 cylindrical (10 x 2mm) specimens were and submitted to the studied radiation regimens (n =4). Data were analyzed by the Kruskal-Wallis and Fisher LSD tests (α = 0.05). Results: it was observed that the irradiation negatively affected the marginal integrity of samples restored with FBF (p < 0.05). No significant differences were observed for the other resin composites. No changes were shown in the surface morphology of bulk fill composites, despite irradiation having affected the surface morphology of the control group (Z350). It was concluded that the accumulated doses of 30 and 60 Gy negatively affected the tooth-restoration interface of FBF and at the surface morphology of Z350. Conclusions: TetricEvoCeram, and X-tra Fil Bulk Fill resin composites can be considered alternatives in the restorative treatment of patients submitted to radiotherapy of the head and neck.

A comparative analysis between Nd:YAG and CO2lasers for their sealing ability of dentinal tubules with and without fluoride varnish: An in vitro study

2012 ◽  
Vol 6 (2) ◽  
pp. 51
Author(s):  
DeepaV Kumar ◽  
Ramanathan Meyappan ◽  
Babu Sreenadh ◽  
Shafie Ahamed ◽  
Natanasikamani Gurucharan ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
In Vitro Study ◽  
Vitro Study ◽  
Fluoride Varnish ◽  
Dentinal Tubules ◽  
Sealing Ability
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