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Published in: Clinical Oral Investigations 3/2021

01-03-2021 | Antibiotic | Original Article

Spectrophotometric insights: calcium hydroxide influences tooth discolorations induced by short-term application of antibiotic/corticosteroid pastes

Authors: Florin Eggmann, Jeremy Rihs, Patrik Lenherr, Roland Weiger, Gabriel Krastl, Lucia K. Zaugg

Published in: Clinical Oral Investigations | Issue 3/2021

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Abstract

Objectives

This in vitro study aimed to assess the influence of a calcium hydroxide dressing regarding the relative color change (ΔE) of enamel–dentin specimens previously exposed to antibiotic/corticosteroid pastes.

Materials and methods

Eighty bovine enamel–dentin specimens with a cylindrical central cavity were randomly allocated to four groups: NEG (empty), POS (blood), LED (Ledermix), and ODO (Odontopaste) (n = 20 each). The materials were applied and sealed with self-adhesive resin luting material. After 3 weeks, the materials were removed and a calcium hydroxide (Ca(OH)2) dressing was placed in all cavities. After a further 3-week storage period, the cavities were restored with resin-based composite. Spectrophotometric color measurements were taken over 6 months, and ΔE values were calculated. A Tukey’s multiple comparison test was performed to assess significant differences within the treatment groups (p < 0.05).

Results

Tooth discolorations were present after 3 weeks in LED (ΔE 29.14 ± 6.55) and POS (ΔE 18.05 ± 7.03); NEG and ODO remained color stable (ΔE 3.2 ± 1.36 and ΔE 2.3 ± 1.16). The 3-week Ca(OH)2 dressing decreased discolorations of POS (ΔE 15.93 ± 6.63; p = 0.37), whereas LED showed a further significant increase (ΔE 39.55; p < 0.0001). Between the end of the Ca(OH)2 dressing and the final restoration no significant color changes were observed in any group (p > 0.9).

Conclusions

Discolorations induced by LED progressed during the Ca(OH)2 dressing despite careful removal of all residues.

Clinical relevance

Calcium hydroxide might negatively affect the discoloring potential of Ledermix. This highlights the need for direct intracanal application methods of Ledermix ensuring a material-free access cavity or alternative antibiotic/corticosteroid pastes such as Odontopaste should be used.
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Metadata
Title
Spectrophotometric insights: calcium hydroxide influences tooth discolorations induced by short-term application of antibiotic/corticosteroid pastes
Authors
Florin Eggmann
Jeremy Rihs
Patrik Lenherr
Roland Weiger
Gabriel Krastl
Lucia K. Zaugg
Publication date
01-03-2021
Publisher
Springer Berlin Heidelberg
Keyword
Antibiotic
Published in
Clinical Oral Investigations / Issue 3/2021
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-020-03414-1

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