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Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives
Published on: May 17, 2020
Bond strength of brackets bonded with an adhesion promoter
A Vicente1, L A Bravo, M Romero
1Docent Unit of Orthodontics, Dental Clinic, University of Murcia, Spain. ascenvi@um.es
Objective:
Enhance-L.C. is an orthodontic adhesion promoter. Our aim was to find out if this product is material-specific as stated by its manufacturers or whether its effects are similar when the promoter is used with other adhesive systems.
Design:
In vitro study.
Setting:
Dental Clinic. University of Murcia, Spain, 2002.
Materials And Methods:
Enhance-L.C. was used with one of the manufacturer's recommended adhesives, Light-Bond, and with a second from another manufacturer, Transbond-XT. One hundred premolars were divided into four groups of 25 premolars: 1)Transbond-XT, 2) Transbond-XT/Enhance-L.C., 3) Light-Bond, 4) Light-Bond/Enhance-L.C.
Main Outcome Measures:
Shear bond strength was evaluated with a universal test machine and the adhesive remaining after debonding was determined using image analysis equipment.
Results:
Enhance-L.C. did not significantly increase the bond strength of either of the two systems (P > 0.008). However, Light-Bond/Enhance-L.C. provided a bond strength significantly greater (P < 0.008) than Transbond-XT and Transbond-XT/Enhance-L.C. Light-Bond also left significantly (P < 0.05) less adhesive remaining on the enamel than Transbond-XT, whether or not either of the systems were used with Enhance-L.C.
Conclusions:
The use of Enhance-L.C with Light-Bond is to be recommended whenever extra bond strength is needed.
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