Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]

Roestamadji RI, Luthfi M, Surboyo MDC, Rumokoi RB, Khotimah FK. Nat Sci Sleep. 2020;12:1083–1090. The Editor-in-chief and Publisher of Nature of Science and Sleep wish to retract the published article. Concerns were raised about the methodology and analysis of saliva melatonin and TNF-alph...

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Autores principales:	Roestamadji RI, Luthfi M, Surboyo MDC, Rumokoi RB, Khotimah FK
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2021
Materias:	night-shift worker oral inflammation periodontal health status sleep time duration melatonin malondialdehyde Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495
Acceso en línea:	https://doaj.org/article/bff61008e1074d7398e9ca2309455f1e
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spelling	oai:doaj.org-article:bff61008e1074d7398e9ca2309455f1e2021-12-02T16:27:18ZSleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]1179-1608https://doaj.org/article/bff61008e1074d7398e9ca2309455f1e2021-07-01T00:00:00Zhttps://www.dovepress.com/retraction-sleep-time-duration-does-not-affect-oral-inflammation-and-p-peer-reviewed-fulltext-article-NSShttps://doaj.org/toc/1179-1608Roestamadji RI, Luthfi M, Surboyo MDC, Rumokoi RB, Khotimah FK. Nat Sci Sleep. 2020;12:1083–1090. The Editor-in-chief and Publisher of Nature of Science and Sleep wish to retract the published article. Concerns were raised about the methodology and analysis of saliva melatonin and TNF-alpha described in the article. Some of these concerns are described below. The collection of a single saliva sample may not be sufficient for accurate melatonin analysis. Further, the 90 minute spread for saliva collection represents 2 half-lives of melatonin disappearance, and the differences between groups could simply be due to differences in the actual sampling times rather than a treatment effect. The values of saliva melatonin reported in the paper appear implausible. Table 4 reports the melatonin concentrations as nmol/ml meaning the 200.52 nmol/ml described would be 46,400 ng/ml. The ELISA assay (E1013Hu, Bioassay Technology Laboratory, Shanghai, China) used to measure the melatonin is understood not to have been validated for use in saliva melatonin measurements. TNF-α is understood to be present in concentrations of pg/ml and the levels reported in Table 4 appear implausible. The selection of the cases and controls is not clear, and the description of the study groups in the article is limited. The night-shift schedule is not described, with almost half of the shift workgroup described working only one-night shift per month, raising questions whether they could be considered shift workers. The authors confirmed the reporting of melatonin values in Table 4 were incorrect and should have been ng/L, however they were unable to account for the other concerns that were raised. Thus, the findings could not be validated and the decision was made to retract the paper. Our decision-making was informed by our policy on publishing ethics and integrity and the COPE guidelines on retraction. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”. This retraction relates to this paperRoestamadji RILuthfi MSurboyo MDCRumokoi RBKhotimah FKDove Medical Pressarticlenight-shift workeroral inflammationperiodontal health statussleep time durationmelatoninmalondialdehydePsychiatryRC435-571Neurophysiology and neuropsychologyQP351-495ENNature and Science of Sleep, Vol Volume 13, Pp 1179-1180 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	night-shift worker oral inflammation periodontal health status sleep time duration melatonin malondialdehyde Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495
spellingShingle	night-shift worker oral inflammation periodontal health status sleep time duration melatonin malondialdehyde Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495 Roestamadji RI Luthfi M Surboyo MDC Rumokoi RB Khotimah FK Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]
description	Roestamadji RI, Luthfi M, Surboyo MDC, Rumokoi RB, Khotimah FK. Nat Sci Sleep. 2020;12:1083–1090. The Editor-in-chief and Publisher of Nature of Science and Sleep wish to retract the published article. Concerns were raised about the methodology and analysis of saliva melatonin and TNF-alpha described in the article. Some of these concerns are described below. The collection of a single saliva sample may not be sufficient for accurate melatonin analysis. Further, the 90 minute spread for saliva collection represents 2 half-lives of melatonin disappearance, and the differences between groups could simply be due to differences in the actual sampling times rather than a treatment effect. The values of saliva melatonin reported in the paper appear implausible. Table 4 reports the melatonin concentrations as nmol/ml meaning the 200.52 nmol/ml described would be 46,400 ng/ml. The ELISA assay (E1013Hu, Bioassay Technology Laboratory, Shanghai, China) used to measure the melatonin is understood not to have been validated for use in saliva melatonin measurements. TNF-α is understood to be present in concentrations of pg/ml and the levels reported in Table 4 appear implausible. The selection of the cases and controls is not clear, and the description of the study groups in the article is limited. The night-shift schedule is not described, with almost half of the shift workgroup described working only one-night shift per month, raising questions whether they could be considered shift workers. The authors confirmed the reporting of melatonin values in Table 4 were incorrect and should have been ng/L, however they were unable to account for the other concerns that were raised. Thus, the findings could not be validated and the decision was made to retract the paper. Our decision-making was informed by our policy on publishing ethics and integrity and the COPE guidelines on retraction. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”. This retraction relates to this paper
format	article
author	Roestamadji RI Luthfi M Surboyo MDC Rumokoi RB Khotimah FK
author_facet	Roestamadji RI Luthfi M Surboyo MDC Rumokoi RB Khotimah FK
author_sort	Roestamadji RI
title	Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]
title_short	Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]
title_full	Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]
title_fullStr	Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]
title_full_unstemmed	Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]
title_sort	sleep time duration does not affect oral inflammation and periodontal health status in night-shift workers: a cross-sectional study [retraction]
publisher	Dove Medical Press
publishDate	2021
url	https://doaj.org/article/bff61008e1074d7398e9ca2309455f1e
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Sleep Time Duration Does Not Affect Oral Inflammation and Periodontal Health Status in Night-Shift Workers: A Cross-Sectional Study [Retraction]

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