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Background: Patients often compliant sensitivity to high-intensity light irradiated application during dental procedures. This study aims to investigate tooth sensitivity caused by high-intensity light irradiated from an intraoral scanner (IOS) and a light-curing unit (LCU).

Material and Methods: Forty-five teeth from 45 healthy volunteers were included. These were equally classified into three groups using the cold test (4 ± 1 °C) and NRS pain assessment; A=control, B=cavity without sensitivity, and C=cavity with sensitivity. Two thermocouple probes were attached to the cervical area of the experimental and control tooth with a composite resin. Tooth sensitivity response by participant grip force was monitored. The digital oscilloscope was used to record two surface temperatures and a pain response during an IOS or a LCU irradiation. The high-intensity light from a LCU and an IOS was randomly applied at 2 mm above the cervical area for 20s. The data were compared statistical with two-way repeated measures ANOVA and Pearson's correlation.

Results: The illumination caused increasing surface temperatures of about 22.98 ± 3.20 °C for a LCU and 5.86 ± 1.46 °C for an IOS from a 29.5 °C baseline. As the light intensity from the LCU generated more heat, participants reported more tooth sensitivity with a shorter response time (2.10s to 18.70s). There was a positive correlation between surface temperature and pain response (R2 = 0.232; p <0.01).

Conclusions: The heat from high-intensity light from a LCU and an IOS can cause tooth sensitivity in some individuals especially those who had a cervical cavity with dentine sensitivity. The higher light intensity would raise the surface temperature and cause a higher sensitivity response. Key words: Light curing unit, intraoral scanner, tooth temperature, dentine sensitivity.

Competing Interests: Conflicts of interest All authors declare that they have no conflict of interest.

Titel:	Dentine sensitivity caused by illumination of intraoral scanner and light curing unit.
Autor/in / Beteiligte Person:	Natongkham, P ; Banthitkhunanon, P ; Wanachantararak, S
Link:	Full Text Finder (Volltext)
Zeitschrift:	Journal of clinical and experimental dentistry, Jg. 14 (2022-05-01), Heft 5, S. e420-e425
Veröffentlichung:	[Spain] : Medicina Oral, 2022
Medientyp:	academicJournal
ISSN:	1989-5488 (print)
DOI:	10.4317/jced.59251
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Publication Type: Journal Article Language: English [J Clin Exp Dent] 2022 May 01; Vol. 14 (5), pp. e420-e425. <i>Date of Electronic Publication: </i>2022 May 01 (<i>Print Publication: </i>2022). References: Aust Dent J. 1992 Aug;37(4):271-6. (PMID: 1444946) ; J Dent Res. 1973 Mar-Apr;52(2):248-52. (PMID: 4511305) ; Arch Oral Biol. 2007 Mar;52(3):218-27. (PMID: 17109811) ; J Pain. 2003 Sep;4(7):407-14. (PMID: 14622683) ; Dent Mater. 2018 Jun;34(6):901-909. (PMID: 29606368) ; Br Dent J. 1987 Apr 11;162(7):253-6. (PMID: 3472555) ; J Clin Periodontol. 1997 Nov;24(11):808-13. (PMID: 9402502) ; J Physiol. 1977 Jan;264(3):641-64. (PMID: 557544) ; J Clin Periodontol. 1987 May;14(5):280-4. (PMID: 3475295) ; J Adhes Dent. 2007 Oct;9(5):477-81. (PMID: 18297829) ; J Oral Rehabil. 1998 Dec;25(12):908-13. (PMID: 9888225) ; Int Dent J. 1972 Jun;22(2):219-27. (PMID: 4505631) ; Materials (Basel). 2019 Jan 29;12(3):. (PMID: 30699935) ; J Prosthodont. 2016 Jun;25(4):282-7. (PMID: 26618259) ; Oper Dent. 2018 Mar/Apr;43(2):136-143. (PMID: 28976838) ; BMC Oral Health. 2014 Jan 30;14:10. (PMID: 24479892) ; Oper Dent. 2001 Sep-Oct;26(5):516-20. (PMID: 11551018) ; Arch Oral Biol. 2016 Jun;66:120-8. (PMID: 26945170) ; Dent Clin North Am. 1990 Jul;34(3):449-73. (PMID: 2197121) ; J Adhes Dent. 2014 Feb;16(1):71-8. (PMID: 24223416) ; J Endod. 2004 Jun;30(6):384-7. (PMID: 15167462) ; Ann Anat. 2018 Jan;215:20-29. (PMID: 28954208) ; Arch Oral Biol. 2007 Jul;52(7):640-7. (PMID: 17303068) ; Am J Orthod Dentofacial Orthop. 2016 Aug;150(2):261-7. (PMID: 27476358) ; Pain. 1993 Nov;55(2):159-169. (PMID: 8309707) ; Arch Oral Biol. 2007 Feb;52(2):154-60. (PMID: 17109813) ; J Dent Res. 2004 Nov;83(11):843-8. (PMID: 15505233) ; Clin Oral Investig. 2017 Jun;21(5):1687-1696. (PMID: 27695955) ; Dent Mater. 1986 Aug;2(4):170-4. (PMID: 3462063) Entry Date(s): Date Created: 20220518 Latest Revision: 20220519 Update Code: 20240513 PubMed Central ID: PMC9094722

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Dentine sensitivity caused by illumination of intraoral scanner and light curing unit.