In Vitro Evaluation of Giomers Microleakage After Exposure to 33% Hydrogen Peroxide: Self-etch vs Total-etch Adhesives

10.2341/05-16 ◽  
2006 ◽  
Vol 31 (2) ◽  
pp. 227-232 ◽  
Author(s):  
S. Deliperi ◽  
D. N. Bardwell ◽  
C. Wegley ◽  
M. D. Congiu

Clinical Relevance Microleakage of a total-etch adhesive system was not influenced by the application of hydrogen peroxide; conversely, enamel dye penetration significantly increased for a self-etching primer.

10.2341/05-53 ◽  
2006 ◽  
Vol 31 (4) ◽  
pp. 431-441 ◽  
Author(s):  
A. D. Loguercio ◽  
A. Reis ◽  
G. Bortoli ◽  
R. Patzlaft ◽  
S. Kenshima ◽  
...  

Clinical Relevance Etch & rinse systems showed better initial interfacial adaptation than self-etch systems. The differences disappeared after 6-months water storage. The thicker the hybrid layer formed by self-etching adhesives, the lower the immediate gap formation.


2018 ◽  
Vol 22 (2) ◽  
pp. 57-63
Author(s):  
Apostolina Theocharidou ◽  
Konstantinos Arapostathis

SummaryBackground/Aim: Molar incisor hypomineralization (MIH) is a qualitative defect of systemic origin, affecting permanent first molars and often permanent incisors. The treatment modalities can include, amongst others, fissure sealants for prevention of dental caries and composite restorations. Both require adhesion to tooth structure. The aim of this study was to review the literature on the adhesion to enamel affected by MIH.Material and Methods: A search of PupMed/Medline, ResearchGate and Google Scholar was performed and limited between 2003, when the judgement criteria for MIH were set, and 2016. Thirty-three papers were considered relevant to the subject including five in vivo and six in vitro studies. Studies involving less than ten teeth were excluded.Results: A four-year clinical trial showed that the application of a total-etch 2-step adhesive system prior to sealant placement is superior to the etch-seal technique. Despite the high success rate of composite restorations shown in three clinical longitudinal studies, there are conflicting results over self-etch being superior to total etch adhesive systems. Pretreating the enamel surface, prior to the adhesive system, with fluoride preventive solutions could reduce the mikroleakage under orthodontic brackets. Three in vitro studies provide inconsistent data about NaOCl pretreating potentials to improve adhesion of composite restorations. Resin infiltration, prior to resin restorations, could improve the microhardness of defected enamel, which may lead to increased bond strength, especially in combination with NaOCl pretreatment.Conclusions: Adhesion to enamel affected by molar incisor hypomeralization is inferior compared to normal enamel. Sealants applied with the etch-bond-seal technique have greater retention than with the etch-seal technique. Further research is required to provide evidence of the effectiveness of the adhesive system and pretreatment to achieve optimal bonding to MIH.


10.2341/08-58 ◽  
2009 ◽  
Vol 34 (2) ◽  
pp. 181-191 ◽  
Author(s):  
A. Reis ◽  
S. K. Moura ◽  
A. Pellizzaro ◽  
K. Dal-Bianco ◽  
A. M. Andrade ◽  
...  

Clinical Relevance The improvement of resin-enamel bond strengths after using Si-C paper and diamond burs for enamel preparation is material dependent. No degradation of enamel bond strength could be observed for any one-step self-etch adhesive system after 12 months of water storage.


2008 ◽  
Vol 33 (5) ◽  
pp. 534-549 ◽  
Author(s):  
J. Perdigão ◽  
M. M. Lopes ◽  
G. Gomes

Clinical Relevance All-in-one adhesives are being currently used in clinical dentistry. These simplified adhesives result in a deficient infiltration in dentin and deficient enamel etching, which may result in marginal leakage and compromised durability.


2009 ◽  
Vol 34 (6) ◽  
pp. 656-663 ◽  
Author(s):  
R. B. Ermis ◽  
O. Kam ◽  
E. U. Celik ◽  
U. B. Temel

Clinical Relevance The two-step etch&rinse and the two-step self-etch adhesive systems tested in this study demonstrated similar clinical performance in Class II cavities after two years.


2015 ◽  
Vol 16 (5) ◽  
pp. 335-339 ◽  
Author(s):  
Zeeshan H Ahmad ◽  
Sukumaran Anil ◽  
Alaa El Araby ◽  
Mohammad D Al Amri

ABSTRACT Objective To evaluate the influence of Expasyl® gingival retraction paste on the shear bond strength of self-etch and total-etch adhesive systems. Materials and methods Twenty-four specimens of extracted, caries-free, sound human molars were used in this study. The molars were then cut vertically into halves through the buccal and lingual cusps. Forty-eight specimens were divided into four groups (total-etch, total-etch with Expasyl application, self-etch, self-etch with Expasyl application) and the shear bond strength was tested. Results Expasyl significantly reduced the shear bond strength of the self-etch and total-etch adhesive systems. The self-etch system showed relatively lower performance compared with the total-etch adhesive system. The shear bond strength values of the total-etch adhesive without Expasyl showed the highest bond strength (21.48 ± 2.89), while the self-etching group adhesive treated with Expasyl showed the lowest shear bond strength value (14.89 ± 1.81). Conclusion From the observations of this in vitro study, it can be concluded that the use of Expasyl® gingival retraction system can negatively affect bond strength of adhesives. The total-etch system showed better compatibility to the Expasyl gingival retraction system than the self-etch. How to cite this article Al Baker AMA, El Araby A, Al Amri MD, Sukumaran A. The Impact of Expasyl® Gingival Retraction Paste on the Bond Strength of Self-etch and Total-etch Systems. J Contemp Dent Pract 2015;16(5):335-339.


Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2921
Author(s):  
Abdullah Saleh Aljamhan ◽  
Sultan Ali Alhazzaa ◽  
Abdulrahman Hamoud Albakr ◽  
Syed Rashid Habib ◽  
Muhammad Sohail Zafar

Background: Resin-based composites (RBCs) provide excellent esthetics but the marginal micro-leakage in the proximal cavities remains a major concern. The aim of the present study was to assess the ability of various dental RBCs and techniques utilized for sealing deep dentin margin in class-II cavities. Methods: Box-cavities (class-II) on the distal and mesial surfaces of extracted (premolar) teeth were prepared with a gingival margin placed 1mm apical to the cemento-enamel junction. Teeth with prepared class II cavities were randomly divided into four study groups according to the type of restorative materials (conventional RBC; bulk-fill RBC; conventional RBC lined with flowable RBC and conventional RBC lined with resin-modified glass-ionomer-cement (GIC) as open sandwich-technique). Each group was further subdivided into a total-etch subgroup in which a separate etching step was performed before applying the bonding agent and a self-etch subgroup in which a self-etch adhesive system was used (n = 10). For each group, cavities were restored using the respective restorative materials and techniques, subjected to 1000 thermocycles, and placed in the methylene-blue dye. The specimen teeth were sectioned for further microscopic examination for micro-leakage. Results: The least dye penetration values were reported for group 4 (GIC) followed by the group Bulk-fill using the self-etch adhesive system (group 2b). The highest dye penetration was reported for the group Bulk-fill using the total-etch adhesive system (2a), followed by the group conventional RBC using the total-etch adhesive system). The total-etch adhesive system had significantly greater micro-leakage compared to the self-etch adhesive system (1a) (p = 0.026). Conclusions: The self-etch adhesive system significantly reduced the micro-leakage compared to the total-etch system. Bulk-fill RBC when bonded with the self-etch adhesive provided good marginal sealing ability comparable to open sandwich-technique using GIC.


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