Influence of Bulk-Fill Composites, Polimerization Modes, and Remaining Dentin Thickness on Intrapulpal Temperature Rise

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

Dental Materials ◽

10.1016/j.dental.2015.02.001 ◽

2015 ◽

Vol 31 (5) ◽

pp. 505-513 ◽

Cited By ~ 23

Author(s):

Patrício Runnacles ◽

Cesar Augusto Galvão Arrais ◽

Marcia Thais Pochapski ◽

Fábio André dos Santos ◽

Ulisses Coelho ◽

...

Keyword(s):

Temperature Rise ◽

Led Light ◽

Light Curing

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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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Effects of Light Curing Modes and Resin Composites on Temperature Rise under Human Dentin: An in vitro Study

Dental Materials Journal ◽

10.4012/dmj.27.581 ◽

2008 ◽

Vol 27 (4) ◽

pp. 581-589 ◽

Cited By ~ 8

Author(s):

Ihsan HUBBEZOGLU ◽

Arife DOGAN ◽

Orhan Murat DOGAN ◽

Giray BOLAYIR ◽

Bulent BEK

Keyword(s):

Temperature Rise ◽

In Vitro Study ◽

Vitro Study ◽

Resin Composites ◽

Human Dentin ◽

Light Curing

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Reaction of Rat Subcutaneous Connective Tissue to Resin Composites Polymerized with Different Light Curing Units and Different Lightening Methods

International Journal of Dentistry ◽

10.1155/2012/156352 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6

Author(s):

Atiyeh Feiz ◽

Farahnaz Arbabzadeh Zavareh ◽

Seyed Mohammad Razavi ◽

Hamid Badrian ◽

Sepideh Dolatyar ◽

...

Keyword(s):

Connective Tissue ◽

Resin Composite ◽

Control Group ◽

Albino Rats ◽

Resin Composites ◽

Significant Difference ◽

Light Curing ◽

Full Power ◽

Subcutaneous Connective Tissue

The aim of the study was to determine and compare the reaction of rat subcutaneous connective tissue to resin composites polymerized with different lights curing and lightening methods. In this in vivo study, 20 mature Wister Albino rats were used. The composite discs, 4 mm in diameter and 2 mm thick, were cured by QTH or LED light curing units with 4 different lightning methods (full power QTH, full power LED, pulse LED, and ramp LED). Five resin composite discs were implanted in each rat, so that 4 of 5 discs for implantation of cured composite discs differently and central one as control without implantation. After sacrificing at 7, 14, 30, and 60 days the inflammatory grade, fibrosis, and necrosis were determined. Freedman and Cochran tests were used to analyze the data using SPSS software ver. 15. The results of the study showed significant differences in inflammation grade and fibrosis among control group and 4 experimental groups at day 14 (P<0.05). In necrosis, there was no significant difference among 4 groups in different times (P>0.05). In conclusion, neither the type of light curing units (LED or QTH) nor the lightening methods can affect the grade of inflammatory reaction.

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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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Cuspal Deflection and Temperature Rise of MOD Cavities Restored through the Bulk-Fill and Incremental Layering Techniques Using Flowable and Packable Bulk-Fill Composites

Materials ◽

10.3390/ma13245664 ◽

2020 ◽

Vol 13 (24) ◽

pp. 5664

Author(s):

Roberto De Santis ◽

Vincenzo Lodato ◽

Vito Gallicchio ◽

Davide Prisco ◽

Francesco Riccitiello ◽

...

Keyword(s):

Temperature Rise ◽

Linear Shrinkage ◽

High Viscosity ◽

Mechanical And Thermal Properties ◽

Pulp Chamber ◽

Compressive Test ◽

Flowable Composite ◽

Low Viscosity ◽

Significant Difference ◽

Light Curing

Background: The aim of this study was to investigate cuspal deflection caused by material shrinkage and temperature rise occurring in the pulp chamber during photopolymerization. The aim of this study was also to investigate the effect of flowable and packable bulk-fill composites on cuspal deflection occurring in mesio-occlusal–distal (MOD) cavities restored through the bulk-fill or through the incremental layering technique. Additionally, mechanical and thermal properties of bulk-fill composites were considered. Methods: Two bulk-fill composites (high-viscosity and low-viscosity), largely differing in material composition, were used. These composites were characterized through linear shrinkage and compressive test. Cuspal deformation during restoration of mesio-occlusal–distal cavities of human premolars was evaluated using both the bulk-fill and the incremental layering techniques. Temperature rise was measured through thermocouples placed 1 mm below the cavity floor. Results: Shrinkage of the flowable composite was significantly higher (p < 0.05) than that of packable composite, while mechanical properties were significantly lower (p < 0.05). For cusp distance variation, no significant difference was observed in cavities restored through both restorative techniques, while temperature rise values spanned from 8.2 °C to 11.9 °C. Conclusions: No significant difference in cusp deflection between the two composites was observed according to both the restorative techniques. This result can be ascribed to the Young’s modulus suggesting that the packable composite is stiffer, while the flowable composite is more compliant, thus balancing the cusp distance variation. The light curing modality of 1000 mW/cm2 for 20 s can be considered thermally safe for the pulp chamber.

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