In vivo temperature rise in anesthetized human pulp during exposure to a polywave LED light curing unit

Objectives. The aim of this study was to compare the effects of different bulk-fill resin composites, polimerization modes, and the thickness of remaining dentin on the increase of intrapulpal temperature. Methods. Human-extracted upper premolar teeth (n = 10) were used to design a single-tooth model with remaining dentin thicknesses of 1 mm and 0.5 mm. Estelite Bulk-fill Flow (Tokuyama, Japan), Surefil SDR™ Flow (Dentsply Caulk, Brazil), Filtek Bulk-Fill Posterior (3M, USA), and SonicFill™ 2 Bulk-fill (Kerr, USA) composites were applied according to the manufacturer’s instructions. The standard and high modes of a light emitted diode (LED) light curing unit (LCU) (VALO™ Utradent, USA), were used for polymerization. In order to mimic the in vivo conditions of pulpal circulation, digital flowmetry (SK-600II, SK Medical, China) was used. Intrapulpal temperature rise was measured using K type thermocoupling (CEM DT 610B, Robosem Engineering, China). Data were analyzed using three-way variance analysis (ANOVA) and the independent t-test. Results. No significant statistical differences in intrapulpal temperature rise between low viscosity bulk-fill composites (SDR and Estelite) were found. The lowest intrapulpal temperature rise was found in groups which used the Filtek Bulk-fill composite. Decreases in the remaining dentin thickness increased the intrapulpal temperature rise. Significance. This study demonstrated that remaining dentin thickness, filler ratio of bulk-fill composites, and power and application time of the LED-LCU may affect intrapulpal temperature rise.

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Comparison of in vivo and in vitro models to evaluate pulp temperature rise during exposure to a Polywave® LED light curing unit

Journal of Applied Oral Science ◽

10.1590/1678-7757-2018-0480 ◽

2019 ◽

Vol 27 ◽

Cited By ~ 2

Author(s):

Patricio Runnacles ◽

Cesar Augusto Galvão Arrais ◽

Cristiane Maucoski ◽

Ulisses Coelho ◽

Mario Fernando De Goes ◽

...

Keyword(s):

Temperature Rise ◽

In Vitro Models ◽

Led Light ◽

Pulp Temperature ◽

Light Curing

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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

Dental Materials ◽

10.1016/j.dental.2020.05.015 ◽

2020 ◽

Vol 36 (9) ◽

pp. 1201-1213 ◽

Cited By ~ 2

Author(s):

Dayane Jaqueline Gross ◽

Andrés Dávila-Sánchez ◽

Patrício Runnacles ◽

Driellen Christine Zarpellon ◽

Fagner Kiratcz ◽

...

Keyword(s):

Inflammatory Response ◽

Temperature Rise ◽

Acute Inflammatory Response ◽

Pulp Tissue ◽

Class V ◽

Led Light ◽

Light Curing

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Influence of Class V preparation on in vivo temperature rise in anesthetized human pulp during exposure to a Polywave ® LED light curing unit

Dental Materials ◽

10.1016/j.dental.2018.03.003 ◽

2018 ◽

Vol 34 (6) ◽

pp. 901-909 ◽

Cited By ~ 3

Author(s):

Driellen Christine Zarpellon ◽

Patrício Runnacles ◽

Cristiane Maucoski ◽

Dayane Jaqueline Gross ◽

Ulisses Coelho ◽

...

Keyword(s):

Temperature Rise ◽

Class V ◽

Led Light ◽

Light Curing

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Controlling In Vivo, Human Pulp Temperature Rise Caused by LED Curing Light Exposure

Operative Dentistry ◽

10.2341/17-364-c ◽

2019 ◽

Vol 44 (3) ◽

pp. 235-241 ◽

Cited By ~ 4

Author(s):

DC Zarpellon ◽

P Runnacles ◽

C Maucoski ◽

U Coelho ◽

FA Rueggeberg ◽

...

Keyword(s):

Temperature Rise ◽

Repeated Measures ◽

Light Exposure ◽

Simultaneous Application ◽

Pulp Temperature ◽

Light Curing ◽

Pulp Exposure ◽

Baseline Temperature ◽

Student’S T

SUMMARY 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) (°C) 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 (ΔT) during exposure was subjected to paired Student's t-test (α=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 ΔT values than did the 30s-H group (p<0.001). Conclusion: Applying air flow simultaneously with LED exposure prevents in vivo pulp temperature rise.

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Comparison of the Amount of Temperature Rise in the Pulp Chamber of Teeth Treated With QTH, Second and Third Generation LED Light Curing Units: An In Vitro Study

Journal of lasers in medical sciences ◽

10.15171/jlms.2016.32 ◽

2016 ◽

Vol 7 (3) ◽

pp. 184-191 ◽

Cited By ~ 4

Author(s):

Rajesh Harivadanbhai Mahant ◽

Shraddha Chokshi ◽

Rupal Vaidya ◽

Pruthvi Patel ◽

Asima Vora ◽

...

Keyword(s):

Temperature Rise ◽

In Vitro Study ◽

Vitro Study ◽

Third Generation ◽

Pulp Chamber ◽

Led Light ◽

Light Curing

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Failure rates among metal brackets cured with two high-intensity LED light-curing lamps: an in vivo study

European Journal of Orthodontics ◽

10.1093/ejo/cjaa025 ◽

2020 ◽

Author(s):

Silvia Americo Albertin ◽

Célia Regina Maio Pinzan-Vercelino ◽

Carlos Flores-Mir ◽

Júlio de Araújo Gurgel

Keyword(s):

Clinical Trial ◽

High Intensity ◽

Orthodontic Treatment ◽

Failure Rates ◽

Posterior Teeth ◽

Led Light ◽

Anterior Teeth ◽

Bonding Failure ◽

Light Curing

Summary Objective The objective of this split-mouth clinical trial was to compare bonding failure rates of metal brackets bonded with two different light-emitting diode (LED) light-curing lamps with different high-intensity power outputs. Materials and methods Forty patients were included for a total of 800 brackets that were randomly bonded (left and right sides in a 1:1 ratio) in maxillary and mandibular arches using two different LED devices. An LED of 3200 mW/cm2 and an LED of 5000 mW/cm2 were used in this split-mouth clinical trial. Bonding failures during the initial 6 months of orthodontic treatment were recorded as maxillary versus mandibular, anterior teeth versus posterior teeth, and left side versus right side. Results Five dropouts were recorded for discontinuing orthodontic treatment and 700 brackets were analysed in total. The bonding failure rates for 3200 and 5000 mW/cm2 LEDs were 6.0 and 7.4 per cent, respectively (P = 0.450), which were not statistically significantly different. There were no significant differences in bracket survival rates between the LEDs used (P = 0.866). The posterior teeth presented a higher index of bond failures (odds ratio, 3.14; 95% confidence interval, 1.68–5.87; P < 0.001). Limitations Direct comparison was only done between two high-intensity LED lights rather than against conventionally used halogen lights. Conclusion Similar bonding failures were recorded using both LED devices (3200 and 5000 mW/cm2). Significantly more bonding failures occurred in premolar teeth than in anterior teeth.

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