Controlling in vivo, human pulp temperature rise caused by LED curing light exposure

D. C. Zarpellon, P. Runnacles, C. Maucoski, U. Coelho, Frederick Rueggeberg, C. A.G. Arrais

Research output: Contribution to journalArticle

Abstract

Objective: The objective of this study was to evaluate the in vivo effectiveness of air spray to reduce pulp temperature rise during exposure of intact premolars to light emitted by a high-power LED light-curing unit (LCU). Methods and Materials: After local Ethics Committee approval (#255945), intact, upper first premolars requiring extraction for orthodontic reasons from five volunteers received infiltrative and intraligamental anesthesia. The teeth (n=9) were isolated using rubber dam, and a minute pulp exposure was attained. The sterile probe from a wireless, NIST-traceable, temperature acquisition system was inserted directly into the coronal pulp chamber. Real-time pulp temperature (PT) (8C) was continuously monitored, while the buccal surface was exposed to a polywave LED LCU (Bluephase 20i, Ivoclar Vivadent) for 30 seconds with simultaneous application of a lingually directed air spray (30s-H/AIR) or without (30s-H), with a seven-minute span between each exposure. Peak PT values were subjected to one-way, repeated-measures analysis of variance, and PT change from baseline (DT) during exposure was subjected to paired Student's t-test (a=0.05). Results: Peak PT values of the 30s-H group were significantly higher than those of 30s-H/ AIR group and those from baseline temperature (p,0.001), whereas peak PT values in the 30s-H/AIR group were significantly lower than the baseline temperature (p=0.003). The 30s-H/ AIR group showed significantly lower DT values than did the 30s-H group (p,0.001). Conclusion: Applying air flow simultaneously with LED exposure prevents in vivo pulp temperature rise.

Original languageEnglish (US)
Pages (from-to)235-241
Number of pages7
JournalOperative dentistry
Volume44
Issue number3
DOIs
StatePublished - Jan 1 2019

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Light
Temperature
Bicuspid
Air
Rubber Dams
Ethics Committees
Cheek
Dental Pulp Cavity
Orthodontics
Volunteers
Analysis of Variance
Tooth
Anesthesia
Students

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Zarpellon, D. C., Runnacles, P., Maucoski, C., Coelho, U., Rueggeberg, F., & Arrais, C. A. G. (2019). Controlling in vivo, human pulp temperature rise caused by LED curing light exposure. Operative dentistry, 44(3), 235-241. https://doi.org/10.2341/17-364-C

Controlling in vivo, human pulp temperature rise caused by LED curing light exposure. / Zarpellon, D. C.; Runnacles, P.; Maucoski, C.; Coelho, U.; Rueggeberg, Frederick; Arrais, C. A.G.

In: Operative dentistry, Vol. 44, No. 3, 01.01.2019, p. 235-241.

Research output: Contribution to journalArticle

Zarpellon, DC, Runnacles, P, Maucoski, C, Coelho, U, Rueggeberg, F & Arrais, CAG 2019, 'Controlling in vivo, human pulp temperature rise caused by LED curing light exposure', Operative dentistry, vol. 44, no. 3, pp. 235-241. https://doi.org/10.2341/17-364-C
Zarpellon, D. C. ; Runnacles, P. ; Maucoski, C. ; Coelho, U. ; Rueggeberg, Frederick ; Arrais, C. A.G. / Controlling in vivo, human pulp temperature rise caused by LED curing light exposure. In: Operative dentistry. 2019 ; Vol. 44, No. 3. pp. 235-241.
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