Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] · 2019
Inflammatory markers IL-1β and RANK-L assessment after non-vital bleaching: A 3-month follow-up.
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Bersezio Cristian, Sánchez Francisca, Estay Juan, Ledezma Paulina, Vernal Rolando, Garlet Gustavo, Oliveira Osmir Batista, Fernández Eduardo
Аннотация
OBJECTIVE: This study assessed IL-1β and RANK-L levels in vivo and color stability of non-vital teeth bleached using hydrogen (35%) and carbamide (37%) peroxides 3 months after treatment.
MATERIALS AND METHODS: Fifty teeth were randomly divided into two groups(n = 25):35% hydrogen peroxide (HP) or 37% carbamide peroxide (CP). Four sessions of intracoronal walking-bleach procedure were performed. IL-1β and RANK-L levels were assessed from gingival crevicular fluid samples (from three vestibular and three palatines sites) at eight different time-points: at the beginning of the study (baseline), after four sessions of intracanal bleaching, and at 1 week, 1 month, and 3 months posttreatment. The color variations were visually detected using Vita bleach shade guide (ΔSGU).
RESULTS: Significant increases of IL-1β and RANK-L levels were detected at all time-points (all P < .05) when comparing each time-point to baseline, and a high correlation (>0.8-Spearman) between variables. According the ΔSGU values, a color change of five for HP and four for CP were detected.
CONCLUSIONS: Non-vital walking bleach technique promotes an increase in IL-1β and RANKL levels in periodontal tissues and also, it is maintained until the third-month posttreatment.
CLINICAL SIGNIFICANCE: The internal whitening of teeth increases the levels of cytokines associated with inflammation and bone resorption 3 months after the whitening procedure is finished; this should warn of possible harmful effects of this whitening technique.
MATERIALS AND METHODS: Fifty teeth were randomly divided into two groups(n = 25):35% hydrogen peroxide (HP) or 37% carbamide peroxide (CP). Four sessions of intracoronal walking-bleach procedure were performed. IL-1β and RANK-L levels were assessed from gingival crevicular fluid samples (from three vestibular and three palatines sites) at eight different time-points: at the beginning of the study (baseline), after four sessions of intracanal bleaching, and at 1 week, 1 month, and 3 months posttreatment. The color variations were visually detected using Vita bleach shade guide (ΔSGU).
RESULTS: Significant increases of IL-1β and RANK-L levels were detected at all time-points (all P < .05) when comparing each time-point to baseline, and a high correlation (>0.8-Spearman) between variables. According the ΔSGU values, a color change of five for HP and four for CP were detected.
CONCLUSIONS: Non-vital walking bleach technique promotes an increase in IL-1β and RANKL levels in periodontal tissues and also, it is maintained until the third-month posttreatment.
CLINICAL SIGNIFICANCE: The internal whitening of teeth increases the levels of cytokines associated with inflammation and bone resorption 3 months after the whitening procedure is finished; this should warn of possible harmful effects of this whitening technique.