In vivo temperature rise and acute inflammatory response in anesthetized human pulp tissue of premolars having Class V preparations after exposure to Polywave® LED light curing units.
In: Dental Materials, Jg. 36 (2020-09-01), Heft 9, S. 1201-1213
academicJournal
Zugriff:
• Pulp temperature is more related to radiant exposure values than to irradiance. • Higher rate of pulp temperature rise increased precursors of inflammatory response. • No distinct histological changes in pulp were noted when temperature increased 5.5 °C. To evaluate the influence of light emitted from two Polywave®, LED light-curing units (LCU) on in vivo pulp temperature (PT) rise and signs of acute inflammatory response in pulps of human premolar having deep Class V preparations. Sixty intact, first premolars from 15 volunteers requiring extraction received infiltrative anesthesia. A sterile thermocouple probe was inserted within the pulp tissue through a minute occlusal pulp exposure in only 45 teeth (n = 9) to continuously monitor PT (°C). A deep buccal Class V preparation was created, and the surface was exposed to light from a commercial Polywave LCU (Bluephase 20i (20i), Ivoclar Vivadent) or from an experimental LCU (Exp) using the exposure modes (EM): 1s/Exp and 2s/Exp, 10s/20i, 20s/20i, and 60s/20i. Peak PT and PT rise values above baseline (ΔT) data were evaluated using a one-way ANOVA followed by Tukey's post-hoc test (α = 5%). Teeth used for histological and immunohistochemical analyses (n = 3) were extracted approximately 2 h after exposure to the LCU. No significant difference in peak PT and ΔT values was noted between 2s/Exp and 20s/20i groups, which both exhibited higher values than 1s/Exp and 10s/20i groups (p < 0.001). Dilated and congested blood vessels were seen after exposure to 1s/Exp, 2s/Exp, or 60s/20i EMs. The expression of IL-1β and TNF-α tended to be more intense when higher irradiance was delivered. Although higher irradiance delivered over a short exposure caused lower PT rise than 5.5 °C, such EMs should be used with caution, as they have more potential to harm the pulp tissue. [ABSTRACT FROM AUTHOR]
Titel: |
In vivo temperature rise and acute inflammatory response in anesthetized human pulp tissue of premolars having Class V preparations after exposure to Polywave® LED light curing units.
|
---|---|
Autor/in / Beteiligte Person: | Gross, Dayane Jaqueline ; Dávila-Sánchez, Andrés ; Runnacles, Patrício ; Zarpellon, Driellen Christine ; Kiratcz, Fagner ; Campagnoli, Eduardo Bauml ; Alegría-Acevedo, Luísa Fernanda ; Coelho, Ulisses ; Rueggeberg, Frederick Allen ; Arrais, Cesar Augusto Galvão |
Link: | |
Zeitschrift: | Dental Materials, Jg. 36 (2020-09-01), Heft 9, S. 1201-1213 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0109-5641 (print) |
DOI: | 10.1016/j.dental.2020.05.015 |
Schlagwort: |
|
Sonstiges: |
|