scholarly journals Micro Push-Out Bond Strength of Resin Composite to Dentin in Primary Dentition Using Three Universal Adhesives with Different pH: An In Vitro Study

2021 ◽  
Vol 11 (14) ◽  
pp. 6349
Author(s):  
Regina María Del Río Carrillo ◽  
Pedro Molinero-Mourelle ◽  
Vicente Vera ◽  
Pablo Romero Villaba ◽  
Elizabeth Casañas ◽  
...  

To evaluate the bond strength of different universal adhesives on deciduous tooth dentineand their relationship with the composition and potential of hydrogen (pH). Methods: An in vitromicro push-out test on 150 samples (n = 50) per group per adhesive, namely, Adhese Universal(ADH; Ivoclar Vivadent), Futurabond U (FUT; Voco GmbH) (Test), and Scotchbond Universal withpre-conditioning (SCO; 3M) (Control), to record bond strength (BS) and type of adhesive failure.Results: The results of the different adhesives (megapascals (MPa)) varied, showing no statisticalsignificance. The corresponding averages are in MPa: ADH, 13.66 2.81; FUT, 14.48 2.88; SCO,14.98 3.96. Additionally, the frequency of type of failure was as follows: mixed (60.7%), adhesive(27.3%), and cohesive (12%). Conclusions: SCO, with a pH of 2.7, showed greater resistance tofracture, while FUT, with a pH of 2.3 and no pre-conditioning, approached the same values, being aone-step adhesive. No relationship was found between failure and type of adhesive.

2018 ◽  
Vol 6 (9) ◽  
pp. 1707-1711
Author(s):  
Rami M. Atia ◽  
Nada Omar ◽  
Haidy Nabil ◽  
Yousra Aly

OBJECTIVE: The aim of this in vitro study was to assess the effect of obturation technique and cementation timings on the bonding of fibre-reinforced posts to the root canal walls. METHODS: Twenty extracted teeth were randomly allocated to two groups according to the obturation technique and cementation timing. Central incisors with single canals were used after being decoronated. Every extracted tooth of the {vertical compaction group} (VC) group (n = 10) had been obturated using the {E & Q plus obturation system} with posts cemented in the same day; The other (CO) conventional group (n = 10) teeth were obturated using the conventional lateral compaction technique and posts cemented after one week. “SF“ Fiber posts were used after bonding and cementation using Rely X ARC resin cement with all the endodontically treated teeth. The push-out test was performed in a universal testing machine. Data were analysed by 2 way analysis of variance with Statistical significance was set to 0.05. RESULTS: Heat softened gutta percha group showed more push out the bond strength of the bonded posts than the conventional obturation group (p < 0.05). In the middle region, there was no statistical significance between the two groups while there was significance in the coronal and apical thirds. CONCLUSION: The vertical compaction technique and early cementation improved the bond strength of the resin posts in comparison to the conventional obturation technique with late cementation.


2021 ◽  
Vol 24 (1) ◽  
pp. 41
Author(s):  
Roopadevi Garlapati ◽  
KolluriMohana Chandra ◽  
PraveenKumar Gali ◽  
Bolla Nagesh ◽  
Sayesh Vemuri ◽  
...  

2019 ◽  
Vol 10 (4) ◽  
pp. 631
Author(s):  
Nimeshika Ramachandruni ◽  
MohammedKhwaja Moinuddin ◽  
LKarthik Prasad ◽  
Shekar Kamishetty ◽  
RaviChandra Cherkupalli

2019 ◽  
Vol 22 (5) ◽  
pp. 483
Author(s):  
Suresh Mitthra ◽  
Lukram Nivedita ◽  
Venkatachalam Prakash ◽  
NewbeginSelvakumar Gold Pearlin Mary ◽  
Alagarsamy Venkatesh ◽  
...  

2007 ◽  
Vol 32 (4) ◽  
pp. 341-346 ◽  
Author(s):  
C. Machado ◽  
E. Sanchez ◽  
S. Alapati ◽  
R. Seghi ◽  
W. Johnston

Clinical Relevance On the basis of the results of this in vitro study, resin composite may be an effective way to repair or mask the appearance of amalgams placed in visible areas of the mouth.


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