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Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie 3/2023

Open Access 03-03-2023 | Original Article

Bonded lingual retainer adhesives and discoloration

An in vitro study

Authors: Ass. Prof. Sabahat Yazıcıoğlu, Dt. Hasan Karadeniz

Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Special Issue 3/2023

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Abstract

Purpose

This in vitro study was conducted to compare the discoloration of a flowable self-adhesive composite, a highly filled composite adhesive, and a liquid polish applied highly filled composite adhesive for bonded lingual retainers.

Methods

Thirty composite discs were fabricated and divided into three groups: group 1, flowable self-adhesive (GC Ortho Connect™ Flow [GCO], GC Orthodontics, Tokyo, Japan); group 2, highly filled composite adhesive (Transbond™ LR [TLR], 3M Unitek, Monrovia, CA, USA); and group 3, highly filled composite adhesive with liquid polish (TLR and BisCover LV™ [TLRB], BISCO Inc, Schaumburg, IL, USA). L*a*b* values were measured by spectrophotometer prior to (T0) and following (T1) immersion in coffee. T1 − T0 differences were calculated as ∆L*, ∆a*, ∆b*, and ∆E*ab values. The Shapiro–Wilk test was performed to determine whether the data were normally distributed. The values that did not fit the normal distribution were evaluated with the Kruskal–Wallis one-way analysis of variance (ANOVA), and Dunn’s test was used for multiple comparisons. The level of significance was p < 0.05.

Results

The difference between the TLR and TLRB groups was statistically significant for ∆E*ab (P = 0.007). ∆E*ab value of TLR group was greater than ∆E*ab value of TLRB group. The differences between the GCO and TLR groups (p = 0.001) and the TLR and TLRB groups (p = 0.010) were statistically significant for ∆a*. ∆a* values of GCO and TLRB groups were greater than ∆a* value of TLR group. The difference between the TLR and TLRB groups was statistically significant (p = 0.003) for ∆b*. ∆b* value of TLR group was greater than ∆b* value of TLRB group.

Conclusions

Using a Transbond LR polished with BisCover LV or only GC Ortho Connect Flow for lingual retainer bonding reduces coffee-induced discoloration.
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Metadata
Title
Bonded lingual retainer adhesives and discoloration
An in vitro study
Authors
Ass. Prof. Sabahat Yazıcıoğlu
Dt. Hasan Karadeniz
Publication date
03-03-2023
Publisher
Springer Medizin
Published in
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Issue Special Issue 3/2023
Print ISSN: 1434-5293
Electronic ISSN: 1615-6714
DOI
https://doi.org/10.1007/s00056-023-00453-7

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