A new method for successful indirect bonding in relation to bond strength
Research output: Contribution to journal › Article › Research › peer-review
Standard
In: Biomedical engineering = Biomedizinische Technik, Vol. 67.2022, No. 5, 24.08.2022, p. 403-410.
Research output: Contribution to journal › Article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex - Download
}
RIS (suitable for import to EndNote) - Download
TY - JOUR
T1 - A new method for successful indirect bonding in relation to bond strength
AU - Wendl, Thomas
AU - Bandl, Christine
AU - Kern, Wolfgang
AU - Wendl, Brigitte
AU - Proff, Peter
N1 - Publisher Copyright: © 2022 Walter de Gruyter GmbH, Berlin/Boston.
PY - 2022/8/24
Y1 - 2022/8/24
N2 - The aim of the work was to develop a new transfer method for indirect bonding of brackets to improve the bond strength by applying a uniform contact pressure over the entire dental arch. This has a great potential to reduce the bracket loss rate during clinical treatment. A suitable shape memory polymer (SMP) was selected and prepared in the chemistry laboratory. This SMP applies a force to the brackets during bonding and thus increases the bond strength by applying uniform contact pressure. Various transfer trays were equipped with SMP platelets and the transfer of brackets from the plaster model to the real human tooth model was performed in vitro. The transfer accuracy and bond strength of the bonded brackets were investigated by 3D-overlay and shear tests, respectively. The transfer accuracy was technique sensitive and showed higher accuracy for the trays with SMPs and self-curing silicones than for the vacuum formed trays with SMPs. The bond strength of the indirectly bonded brackets with SMPs was on average 1–2 MPa higher than the bond strength of the brackets indirectly bonded with a conventional two-layer vacuum formed tray without SMPs. Thus, transfer trays with SMPs can provide a significant improvement in bond strength during indirect bonding after appropriate adjustment.
AB - The aim of the work was to develop a new transfer method for indirect bonding of brackets to improve the bond strength by applying a uniform contact pressure over the entire dental arch. This has a great potential to reduce the bracket loss rate during clinical treatment. A suitable shape memory polymer (SMP) was selected and prepared in the chemistry laboratory. This SMP applies a force to the brackets during bonding and thus increases the bond strength by applying uniform contact pressure. Various transfer trays were equipped with SMP platelets and the transfer of brackets from the plaster model to the real human tooth model was performed in vitro. The transfer accuracy and bond strength of the bonded brackets were investigated by 3D-overlay and shear tests, respectively. The transfer accuracy was technique sensitive and showed higher accuracy for the trays with SMPs and self-curing silicones than for the vacuum formed trays with SMPs. The bond strength of the indirectly bonded brackets with SMPs was on average 1–2 MPa higher than the bond strength of the brackets indirectly bonded with a conventional two-layer vacuum formed tray without SMPs. Thus, transfer trays with SMPs can provide a significant improvement in bond strength during indirect bonding after appropriate adjustment.
KW - bond strength
KW - indirect bonding
KW - shape memory polymers
KW - transfer accuracy
KW - transfer tray
UR - http://www.scopus.com/inward/record.url?scp=85136621423&partnerID=8YFLogxK
U2 - 10.1515/bmt-2022-0147
DO - 10.1515/bmt-2022-0147
M3 - Article
C2 - 35998665
AN - SCOPUS:85136621423
VL - 67.2022
SP - 403
EP - 410
JO - Biomedical engineering = Biomedizinische Technik
JF - Biomedical engineering = Biomedizinische Technik
SN - 0013-5585
IS - 5
ER -