Temperature increase during orthodontic bonding with different curing units using an infrared camera

Aksakalli, Sertac; Demi̇r, Abdullah; Selek, Murat; Taşdemir, Şakir

doi:10.3109/00016357.2013.794954

Cited by 11 publications

(20 citation statements)

References 27 publications

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“…The highest surface temperature observed was 58.1 ± 0.9 °C for T2 and 53.1 ± 0.3 for T1 (Tables 2–7). This finding is in line with previous observations [2, 24]. Such high temperatures potentially are a risk for causing thermal damage of the soft tissue.…”

Section: Discussionsupporting

confidence: 93%

“…[33]. However, increased curing time leads to higher temperature and the negative consequence of high temperature during light curing has been a focal point concerning potential pulpal tissue damage [2, 19–21, 24, 34, 35]. This is especially relevant in relation to worn teeth or teeth with larger destructions having a limited amount of dental tissue.…”

Section: Discussionmentioning

confidence: 99%

“…The reason for this development trend is claimed to be shorter curing times and increased polymerization, although the latter is still a matter for discussion and has been questioned [5, 6]. With higher output, there is a risk of increased temperature even with LED technology and concerns have been raised about increasing risk for pulp and tissue damage in patients [1, 2, 7, 8], a risk which also was of concern with QTH devices [9–11]. Hanning and Bott investigated QTH curing devices and showed a temperature increased of ≈8 °C depending on energy output [11].…”

Section: Introductionmentioning

confidence: 99%

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Light-curing units used in dentistry: factors associated with heat development—potential risk for patients

et al. 2016

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ObjectivesTo investigate how heat development in the pulp chamber and coronal surface of natural teeth with and without cusps subjected to irradiance using light-emitting diode (LED)–light-curing units (LCUs) is associated with (i) irradiance, (ii) time, (iii) distance, and (iv) radiant exposure.Materials and methodsThree different LED-LCUs were used. Their irradiance was measured with a calibrated spectrometer (BlueLight Analytics Inc., Halifax, Canada). An experimental rig was constructed to control the thermal environment of the teeth. The LED-LCU tip position was accurately controlled by a gantry system. Tooth surface temperature was measured by thermography (ThermaCAM S65 HS, FLIR Systems, Wilsonville, USA) and pulp chamber temperature with a thermocouple. LED-LCU tip distance and irradiation times tested were 0, 2, and 4 mm and 10, 20, and 30 s, respectively. Ethical permission was not required for the use of extracted teeth.ResultsMaximum surface and pulp chamber temperatures were recorded in tooth without cusps (58.1 °C ± 0.9 °C and 43.1 °C ± 0.9 °C, respectively). Radiant exposure explained the largest amount of variance in temperature, being more affected by time than irradiance.ConclusionsAt all combinations of variables tested, repeated measurements produced consistent results indicating the reliability of the method used. Increased exposure time seems to be the factor most likely to cause tissue damage.Clinical relevanceRisk of superficial tissue damage at irradiances >1200 mW/cm2 is evident. There is a risk of pulp damage when only thin dentin is left at higher irradiances (>1200 mW/cm2). Clinicians should be aware of LED-LCU settings and possible high temperature generated.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Light-curing units used in dentistry: factors associated with heat development—potential risk for patients

et al. 2016

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“…Many factors of temperature changes in pulp can be connected with the contents of dental restorative materials, type of light curing unit (LCU), light intensity of the LCU, exposure time to LCU, and thickness of the remaining dentin. 6,9,11 Different curing units (halogens, plasma arcs, and LEDs) were preferred to cure the composite resins and compomers. 10,16 Contemporary LCUs are more commonly used than other light sources in restorative dentistry and have many benefits.…”

Section: Discussionmentioning

confidence: 99%

“…Regarding the use of thermal camera, thermocouples are used in evaluating the temperature increase in the pulp chamber as the temperature change on the tooth surfaces is evaluated. 9,12 The pulpal microcirculation occurring in the pulp plays an important role as a coolant in decreasing the effect of thermal stimuli on the pulpal tissue. 13 In their study on monkeys, Zach and Cohen 14 found that a temperature increase of 5.5 o C in the pulp chamber for 10 seconds led to the loss of vitality on the pulp tissue by 15%.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Temperature Changes in the Pulpal Chamber of the Primary Tooth During Curing of Colored Compomers

Altan¹,

Göztaş²,

Tosun

et al. 2018

Cumhuriyet Dental Journal

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To investigate the temperature changes in the primary teeth pulp chambers during the curing of different colored compomers Materials and Methods: Class II cavities were prepared in primary mandibular second molars (n=5). Gold, blue, green, berry, and tooth (control group) colored compomers were tested in two steps (aproximal and occlusal). Measurement of pulp chamber temperature changes during curing was performed with a J type thermocouple. The data including differences between the highest and initial temperature values were recorded and analyzed by two-way ANOVA and Mann-Whitney U tests Results: There were statistically significant differences temperature changes in groups (p<0.05). Cümle yeniden kurulabilir. Gold colored compomer Demonstrate the highest temperature increase in both proximal and occlusal surfaces. Tooth colored compomer (A2) Demonstrate the lower temperature increase. The temperature increase in aproximal cavities was found higher than the temperature increase in occlusal cavities. Conclusions: Colored compomer can be an alternative restorative materials in superficial class I and II cavities in primary teeth. Dark coloured compomers should be used in deep cavities.

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Examining exposure reciprocity in a resin based composite using high irradiance levels and real-time degree of conversion values

et al. 2015

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Temperature increase during orthodontic bonding with different curing units using an infrared camera

Abstract: The LED unit induced significantly higher temperature changes than did the HQTH. The temperature increase during orthodontic bonding was increased with long exposure time. A shorter light-tip tooth surface distance leads to greater increases in temperature.

Cited by 11 publications

References 27 publications

Light-curing units used in dentistry: factors associated with heat development—potential risk for patients

Light-curing units used in dentistry: factors associated with heat development—potential risk for patients

Evaluation of Temperature Changes in the Pulpal Chamber of the Primary Tooth During Curing of Colored Compomers

Examining exposure reciprocity in a resin based composite using high irradiance levels and real-time degree of conversion values

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