TY - JOUR
T1 - Effect of various mesh designs on shear bond strength of new and recycled brackets –a comparative, invitro study
AU - Agarwal, Kopal
AU - Shetty, Siddarth
AU - Desai, Asavari
N1 - Publisher Copyright:
© 2020, Institute of Medico-Legal Publications. All rights reserved.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - Introduction: Various chemical and mechanical methods are used to enhance the retention of adhesive to the metal bases of the brackets.Inspite of several efforts,bracket failure is one of the commonest problems faced during treatment.Debonded brackets are generally recycled and reused.This study was designed to compare the shear bond strength(SBS)of five commonly available mesh designs and to determine which mesh design offers least reduction of SBS following recycling. Method: Sample consisted of 5 types of brackets with different mesh designs, bonded to 70 extracted human premolars.The SBS was checked using Instron universal testing machine.The brackets were recycled using sandblasting procedure and were rebonded on the sample teeth.Bond strength testing was again carried out using the same procedure. Results: Mean SBS of Discovery smart bracket with laser structured base was highest followed by 3M Unitek brackets.The brackets by American Orthodontics had lowest bond strength.After recycling with sandblasting procedure,an insignificant reduction in SBS was noticed in all five groups. Conclusion: Laser structured base design was superior to other bracket base designs.All five bracket types had optimal bond strength required for successful bonding both before and after recycling (>7.8 MPa).
AB - Introduction: Various chemical and mechanical methods are used to enhance the retention of adhesive to the metal bases of the brackets.Inspite of several efforts,bracket failure is one of the commonest problems faced during treatment.Debonded brackets are generally recycled and reused.This study was designed to compare the shear bond strength(SBS)of five commonly available mesh designs and to determine which mesh design offers least reduction of SBS following recycling. Method: Sample consisted of 5 types of brackets with different mesh designs, bonded to 70 extracted human premolars.The SBS was checked using Instron universal testing machine.The brackets were recycled using sandblasting procedure and were rebonded on the sample teeth.Bond strength testing was again carried out using the same procedure. Results: Mean SBS of Discovery smart bracket with laser structured base was highest followed by 3M Unitek brackets.The brackets by American Orthodontics had lowest bond strength.After recycling with sandblasting procedure,an insignificant reduction in SBS was noticed in all five groups. Conclusion: Laser structured base design was superior to other bracket base designs.All five bracket types had optimal bond strength required for successful bonding both before and after recycling (>7.8 MPa).
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U2 - 10.37506/ijfmt.v14i4.11472
DO - 10.37506/ijfmt.v14i4.11472
M3 - Article
AN - SCOPUS:85100195593
SN - 0973-9122
VL - 14
SP - 211
EP - 218
JO - Journal of Forensic Medicine and Toxicology
JF - Journal of Forensic Medicine and Toxicology
IS - 4
ER -