Incorporation of chitosan into a universal adhesive system: Physicochemical characteristics, gelatinolytic activity, bond strength and interface micromorphology analyses

2021 ◽  
Vol 106 ◽  
pp. 102814
Author(s):  
Rodrigo Dacoreggio ◽  
Enrico Coser Bridi ◽  
Rosanna Tarkany Basting ◽  
Jonathan Gleik Barros Tenuti ◽  
Fabiana Mantovani Gomes França ◽  
...  
2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Mariana Almeida Mello Proença ◽  
Karime Tavares Lima da Silva ◽  
Alisson Costa e Silva ◽  
Edilausson Moreno Carvalho ◽  
José Bauer ◽  
...  

Objectives. The aim of this study was to evaluate the shear bond strength of metal brackets bonded with different universal adhesive systems containing 10-MDP and Transbond Plus Self Etching Primer after 20,000 thermal cycles. Materials and Methods. A total of 130 sound bovine teeth were used, which are divided into 5 groups (n = 26) according to the adhesive system used: All-Bond Universal (Bisco), Ambar Universal (FGM), Clearfil Universal Bond (Kuraray), Single Bond Universal (3M/ESPE), and Transbond Plus SEP (3M/ESPE) as control. The adhesives were applied for 20 seconds and bonded with a resin Transbond XT (3M/ESPE). After this, the teeth were submitted to 20,000 cycles at 5°C and 55°C. Afterwards, the shear bond strength test was performed in a universal test machine (Instron 3342). The adhesive remnant index (ARI) was evaluated under a stereomicroscope at 10x magnification and scanning electronic microscopy (SEM, Hitachi 3030). The shear bond strength data were submitted to One-Way ANOVA (α = 0.05) and the ARI to the Kruskal–Wallis test (α = 0.05). Results. Statistical analysis showed that the universal adhesive systems presented mean shear bond strength values similar to Transbond Plus SEP (p<0.05). The universal adhesive presented similar ARI values among them but differed from those of Transbond Plus SEP (p<0.001). Transbond Plus SEP presented a high ARI value when compared with the universal adhesive systems and high demineralization of enamel. Conclusions. The results show that universal adhesive systems may be used for bonding metal brackets if the orthodontist wants to maintain dental enamel health.


Author(s):  
Stefan Dačić ◽  
Milan Miljković ◽  
Aleksandar Mitić ◽  
Goran Radenković ◽  
Marija Anđelković‐Apostolović ◽  
...  

2014 ◽  
Vol 30 ◽  
pp. e144
Author(s):  
C.P. Gré ◽  
M.A.C. Andrada ◽  
S. Monteiro Júnior ◽  
D.P. Lise ◽  
C. Deucher ◽  
...  

2020 ◽  
Vol 11 (2) ◽  
pp. 37-40
Author(s):  
Gina Deborah Maia de Carvalho ◽  
Marianny Flexa Feitosa ◽  
Bruna Dantas Muniz ◽  
Lara Rabelo Aragão ◽  
Taira Endi de Flaviano Albuquerque ◽  
...  

2021 ◽  
Vol 15 (2) ◽  
pp. 82-86
Author(s):  
Mahmoud Bahari ◽  
Siavash Savadi Oskoee ◽  
Mohammad Esmaeel Ebrahimi Chaharom ◽  
Nasim Molayi

Background. Contamination of dentin surface is one of the common problems in restorative dentistry. The aim was to investigate the effects of different surface contaminators on the dentin shear bond strength (SBS) of universal adhesive system (UAS) applied in etch-and-rinse (ER) and self-etch (SE) strategies. Methods. One hundred forty-four maxillary anterior sound human teeth were divided into six groups based on the types of surface contaminators: no surface contaminator (control) and experimental groups contaminated with blood, saliva, aluminium chloride (ALC), ferric sulphate (FS), and caries disclosing agent (CDA). Then, each group was further subdivided into two, based on the application strategy of UAS (ER and SE). After applying the adhesive according to the manufacturer’s instructions, and bonding cylindrical composite samples, the SBS was measured. The data were analysed using two-way ANOVA, Tukey’s HSD test and t test (P<0.05). Results. The SBS in all contaminated groups, except for CDA, was significantly lower in both ER and SE strategies compared to control group (P<0.05). A comparison between the application strategies revealed that ER and SE were only significantly different in the FS contaminated group (P<0.05). Conclusion. All tested contaminators, except CDA, significantly decreased SBS of UAS in both ER and SE strategies.


2017 ◽  
Vol 41 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Tathiane Larissa Lenzi ◽  
Fabio Zovico Maxnuck Soares ◽  
Rachel de Oliveira Rocha

Objective: To evaluate the effect of bonding strategy on microtensile bond strength (μTBS) of a new universal adhesive system to primary tooth dentin. Study design: Flat dentin surfaces from 25 primary molars were assigned to 5 groups according to the adhesive and bonding approach: Adper Single Bond 2 (two-step etch-and-rinse adhesive) and Clearfil SE Bond (two-step self-etch system), as controls; Scotchbond Universal Adhesive–self-etch, dry or wet-bonding etch-and-rinse strategies. Composite buildups were constructed and the teeth were sectioned to obtain bonded sticks (0.8 mm2) to be tested under tension at 1mm/min. The μTBS means were analyzed by one-way ANOVA and Tukey's tests (α = 0.05). Failure mode was evaluated using a stereomicroscope (400×). Results: Universal adhesive applied following both dry and wet-bonding etch-and-rinse strategies showed similar bond strength compared with control adhesive systems. Self-etch approach resulted in the lowest μTBS values. For all groups, adhesive/mixed failure prevailed. The percentage of premature debonded specimens was higher when the universal adhesive was used as self-etch mode. Conclusion: The universal adhesive does not share the same versatility of being used in the etch-and-rinse and self-etch approaches; however, the use of the new adhesive following either wet or dry-bonding may be a suitable option as alternative to two-step etch-and-rinse adhesive protocol.


Author(s):  
Marina Ciccone Giacomini ◽  
Polliana Mendes Candia Scaffa ◽  
Rafael Simões Gonçalves ◽  
Giovanna Speranza Zabeu ◽  
Cristina de Mattos Pimenta Vidal ◽  
...  

2020 ◽  
Vol 11 (2) ◽  
pp. 37-40
Author(s):  
Gina Deborah Maia de Carvalho ◽  
Marianny Flexa Feitosa ◽  
Bruna Dantas Muniz ◽  
Lara Rabelo Aragão ◽  
Taira Endi de Flaviano Albuquerque ◽  
...  

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