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Clinical Oral Investigations
Published in: Clinical Oral Investigations 3/2019

01-03-2019 | Original Article

Ability of two single-step restorative materials to avoid crown darkening caused by intracanal minocycline paste

Authors: Ane Poly, Fernando Marques, Sandra R. Fidel, Antonio Fernando Monnerat, Luciana M. Sassone

Published in: Clinical Oral Investigations | Issue 3/2019

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Abstract

Objectives

This study aimed to quantitatively assess the ability of two single-step restorative materials to avoid crown darkening caused by the use of minocycline as an intracanal medicament.

Materials and methods

After coronal access and instrumentation, 120 maxillary incisors were divided into four groups (n = 30). Two experimental groups according to the restorative material applied to the inner walls of the access cavity: OB, OptiBond All-In-One + minocycline intracanal paste; U200, RelyX U200 + minocycline intracanal paste. Two control groups without restorative materials: MIN, minocycline intracanal paste and SL, saline intracanal. Color determination was performed using a spectrophotometer at five time points, immediately after materials were applied (baseline), and at 7, 14, 21, and 28 days from the baseline.

Results

Decrease in the mean values of L* (luminosity) was observed after insertion of minocycline paste in all groups at all time points. Statistically significant differences were absent between the time points (P > .05). After 28 days, MIN showed significantly more darkening (ΔL*) (− 10.6 ± 7.3) than OB (− 5.4 ± 6.2), U200 (− 5.8 ± 3.9) and SL (− 2.3 ± 1.2) (P < .05).

Conclusions

Crown darkening can be minimized by the previous application of RelyX U200 or OptiBond All-In-One to the inner walls of the access cavity before a minocycline-containing paste is applied as an intracanal medication.

Clinical relevance

The American Association of Endodontists Clinical Considerations for Regenerative Procedures in necrotic immature teeth suggests the triple antibiotic paste as an intracanal medication (2018). However, discoloration and crown darkening are common unfavorable outcomes. The clinical protocol suggested in this paper has shown to be able to minimize crown darkening, predictably leading to a better patient-centered clinical success.
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Metadata
Title
Ability of two single-step restorative materials to avoid crown darkening caused by intracanal minocycline paste
Authors
Ane Poly
Fernando Marques
Sandra R. Fidel
Antonio Fernando Monnerat
Luciana M. Sassone
Publication date
01-03-2019
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 3/2019
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-018-2557-0

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