Assessment of the nanostructure of acid–base resistant zone by the application of all-in-one adhesive systems: Super dentin formation

2009 ◽  
Vol 19 (2-3) ◽  
pp. 163-171 ◽  
Author(s):  
Toru Nikaido ◽  
Dinesh D.S. Weerasinghe ◽  
Kanchana Waidyasekera ◽  
Go Inoue ◽  
Richard M. Foxton ◽  
...  
2011 ◽  
Vol 30 (5) ◽  
pp. 576-582 ◽  
Author(s):  
Toru NIKAIDO ◽  
Chiaki ICHIKAWA ◽  
Na LI ◽  
Tomohiro TAKAGAKI ◽  
Alireza SADR ◽  
...  

2015 ◽  
Vol 14 (4) ◽  
pp. 334-340 ◽  
Author(s):  
Marina Di Francescantonio ◽  
Hamid Nurrohman ◽  
Tomohiro Takagaki ◽  
Toru Nikaido ◽  
Junji Tagami ◽  
...  

2012 ◽  
Vol 31 (2) ◽  
pp. 232-238 ◽  
Author(s):  
Go INOUE ◽  
Toru NIKAIDO ◽  
Alireza SADR ◽  
Junji TAGAMI
Keyword(s):  

2015 ◽  
Vol 21 (5) ◽  
pp. 1271-1277 ◽  
Author(s):  
Toru Nikaido ◽  
Hamid Nurrohman ◽  
Tomohiro Takagaki ◽  
Alireza Sadr ◽  
Shizuko Ichinose ◽  
...  

AbstractThe aim of interfacial nanoleakage evaluation is to gain a better understanding of degradation of the adhesive–dentin interface. The acid–base resistant zone (ABRZ) is recognized at the bonded interface under the hybrid layer (HL) in self-etch adhesive systems after an acid–base challenge. The purpose of this study was to evaluate nanoleakage in HL and ABRZ using three self-etch adhesives; Clearfil SE Bond (SEB), Clearfil SE One (SEO), and G-Bond Plus (GBP). One of the three adhesives was applied on the ground dentin surface and light cured. The specimens were longitudinally divided into two halves. One half remained as the control group. The others were immersed in ammoniacal silver nitrate solution, followed by photo developing solution under fluorescent light. Following this, the specimens were subjected to acid–base challenges with an artificial demineralization solution (pH4.5) and sodium hypochlorite, and prepared in accordance with common procedures for transmission electron microscopy (TEM) examination. The TEM images revealed silver depositions in HL and ABRZ due to nanoleakage in all the adhesives; however, the extent of nanoleakage was material dependent. Funnel-shaped erosion beneath the ABRZ was observed only in the all-in-one adhesive systems; SEO and GBP, but not in the two-step self-etch adhesive system; SEB.


Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 790 ◽  
Author(s):  
Eunice Carrilho ◽  
Miguel Cardoso ◽  
Manuel Marques Ferreira ◽  
Carlos Marto ◽  
Anabela Paula ◽  
...  

The incorporation of functional monomers in dental adhesive systems promotes chemical interaction with dental substrates, resulting in higher adhesion forces when compared to micromechanical adhesion only. The 10-MDP monomer, whose chemical structure allows for a polar behavior which is favorable to adhesion, also promotes the protection of collagen fibers through the formation of MDP-calcium salts. This systematic review aimed to characterize the interface created by 10-MDP containing adhesive systems through an evaluation of the following parameters: Formation of nano-layered structures, capacity to produce an acid-base resistant zone, and adhesion stability. The research was conducted using PubMed, Cochrane Library, Web of Science and Embase, limited to English, Spanish, and Portuguese articles. The research was done according to the PICO strategy. The 10-MDP monomer has the capacity to produce an acid-base resistant zone on the adhesive interface, which increases the response to acid-base challenges. The adhesion established by these systems is stable over time. To have the best of these adhesive solutions, a scrubbing technique must be used to apply the adhesive system on dental substrates, in order to improve monomers infiltration and to create a stable bond. Time must be given for the solution to infiltrate, hybridize and form the MDP-Ca, improving adhesive stability.


2009 ◽  
Vol 28 (4) ◽  
pp. 493-500 ◽  
Author(s):  
Yasuhiro IIDA ◽  
Toru NIKAIDO ◽  
Shuzo KITAYAMA ◽  
Tomohiro TAKAGAKI ◽  
Go INOUE ◽  
...  

2015 ◽  
Vol 26 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Marcelo Giannini ◽  
Patrícia Makishi ◽  
Ana Paula Almeida Ayres ◽  
Paulo Moreira Vermelho ◽  
Bruna Marin Fronza ◽  
...  

This paper presents the state of the art of self-etch adhesive systems. Four topics are shown in this review and included: the historic of this category of bonding agents, bonding mechanism, characteristics/properties and the formation of acid-base resistant zone at enamel/dentin-adhesive interfaces. Also, advantages regarding etch-and-rinse systems and classifications of self-etch adhesive systems according to the number of steps and acidity are addressed. Finally, issues like the potential durability and clinical importance are discussed. Self-etch adhesive systems are promising materials because they are easy to use, bond chemically to tooth structure and maintain the dentin hydroxyapatite, which is important for the durability of the bonding.


2014 ◽  
Vol 84 (3-4) ◽  
pp. 0206-0217 ◽  
Author(s):  
Seyedeh-Elaheh Shariati-Bafghi ◽  
Elaheh Nosrat-Mirshekarlou ◽  
Mohsen Karamati ◽  
Bahram Rashidkhani

Findings of studies on the link between dietary acid-base balance and bone mass are relatively mixed. We examined the association between dietary acid-base balance and bone mineral density (BMD) in a sample of Iranian women, hypothesizing that a higher dietary acidity would be inversely associated with BMD, even when dietary calcium intake is adequate. In this cross-sectional study, lumbar spine and femoral neck BMDs of 151 postmenopausal women aged 50 - 85 years were measured using dual-energy x-ray absorptiometry. Dietary intakes were assessed using a validated food frequency questionnaire. Renal net acid excretion (RNAE), an estimate of acid-base balance, was then calculated indirectly from the diet using the formulae of Remer (based on dietary intakes of protein, phosphorus, potassium, and magnesium; RNAERemer) and Frassetto (based on dietary intakes of protein and potassium; RNAEFrassetto), and was energy adjusted by the residual method. After adjusting for potential confounders, multivariable adjusted means of the lumbar spine BMD of women in the highest tertiles of RNAERemer and RNAEFrassetto were significantly lower than those in the lowest tertiles (for RNAERemer: mean difference -0.084 g/cm2; P=0.007 and for RNAEFrassetto: mean difference - 0.088 g/cm2; P=0.004). Similar results were observed in a subgroup analysis of subjects with dietary calcium intake of >800 mg/day. In conclusion, a higher RNAE (i. e. more dietary acidity), which is associated with greater intake of acid-generating foods and lower intake of alkali-generating foods, may be involved in deteriorating the bone health of postmenopausal Iranian women, even in the context of adequate dietary calcium intake.


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