Comparison of Temperature Changes in the Pulp Chamber Induced by Various Light Curing Units, In Vitro

10.2341/05-26 ◽  
2006 ◽  
Vol 31 (2) ◽  
pp. 261-265 ◽  
Author(s):  
A. R. Yazici ◽  
A. Müftü ◽  
G. Kugel ◽  
R. D. Perry
Keyword(s):  
Clinical Relevance ◽  
Critical Factor ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Thermal Transfer ◽  
Light Curing

Clinical Relevance The thickness of the residual dentin is a critical factor in the reducing thermal transfer to pulp, and this transfer varies with the curing unit used.

scholarly journals Temperature changes in the pulp chamber induced by polymerization of resin-based dental restoratives following simulated direct pulp capping

2019 ◽  
Vol 73 (4) ◽  
pp. 239-248
Author(s):  
Violeta Petrovic ◽  
Jovana Stasic ◽  
Vojislav Komlenic ◽  
Tatjana Savic-Stankovic ◽  
Marina Latkovic ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Mineral Trioxide Aggregate ◽  
Glass Ionomer ◽  
Direct Pulp Capping ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Pulp Capping ◽  
Dental Restoratives ◽  
Resin Modified Glass Ionomer ◽  
Light Curing

The objective of this study was to measure temperature changes in the pulp chamber induced by polymerization of resin-based dental restoratives following a simulated procedure of direct pulp capping. Class I cavities with a microperforation at the pulp horn were prepared in extracted human molar teeth. The complete procedure of direct pulp capping and cavity restoration was performed with the root part of extracted teeth fixed in a water bath at 37 ?C. Mineral trioxide aggregate, bioactive dentin substitute or calcium-hydroxide paste were used as pulp capping materials. Cavities were restored with a light-cured or chemically-cured resin-modified glass ionomer, universal adhesive and a bulk-fill composite, cured with a high-intensity LED unit. Pulp capping materials caused a slight temperature decrease. Lower temperature increase was recorded during light-curing of the glass ionomer liner after direct capping with mineral trioxide aggregate and calcium-hydroxide than that recorded for the bioactive dentin substitute. Adhesive light-curing increased temperature in all groups with higher mean temperatures in groups with chemically-cured as compared to those for the light-cured glass ionomer liner. Direct pulp capping with mineral trioxide aggregate or calcium-hydroxide followed by the light-cured resin-modified glass ionomer liner and a bonded bulk-fill composite restoration induced temperature changes below the potentially adverse threshold of 42.5?C.

scholarly journals Pulp chamber temperature changes during orthodontic bonding – an in vitro study

2021 ◽  
Vol 37 (2) ◽  
pp. 157-164
Author(s):  
Aysegul Ayhan Bani ◽  
Burcu Balos Tuncer ◽  
Cumhur Tuncer
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Chamber Temperature ◽  
Orthodontic Bonding

scholarly journals Temperature Changes of Pulp Chamber duringIn VitroLaser Welding of Orthodontic Attachments

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Eren İşman ◽  
Rıdvan Okşayan ◽  
Oral Sökücü ◽  
Serdar Üşümez
Keyword(s):  
Third Molar ◽  
Orthodontic Appliances ◽  
Pulp Chamber ◽  
Yag Laser ◽  
Temperature Changes ◽  
Orthodontic Wire ◽  
Baseline Temperature ◽  
Thermal Risk ◽  
Thermocouple Wire

The use of lasers has been suggested for orthodontists to fabricate or repair orthodontic appliances by welding metals directly in the mouth. This work aimed to evaluate the temperature changes in the pulp chamber during welding of an orthodontic wire to an orthodontic molar band using Nd : YAG laserin vitro. A freshly extracted human third molar with eliminated pulpal tissues was used. J-type thermocouple wire was positioned in the pulp chamber. A conductor gel was used in the transferring of outside temperature changes to the thermocouple wire. An orthodontic band was applied to the molar tooth and bonded using light cured orthodontic cement. Twenty five mm length of 0.6 mm diameter orthodontic stainless steel wires was welded to the orthodontic band using Nd : YAG laser operated at 9.4 watt. Temperature variation was determined as the change from baseline temperature to the highest temperature was recorded during welding. The recorded temperature changes were between 1.8 and 6.8°C (mean: 3.3 ± 1.1°C). The reported critical 5.5°C level was exceeded in only one sample. The results of this study suggest that intraoral use of lasers holds great potential for the future of orthodontics and does not present a thermal risk. Further studies with larger samples and structural analysis are required.

Parameters Influencing Increase in Pulp Chamber Temperature with Light-curing Devices: Curing Lights and Pulpal Flow Rates

2010 ◽  
Vol 35 (3) ◽  
pp. 353-361 ◽  
Author(s):  
S-H. Park ◽  
J-F. Roulet ◽  
S. D. Heintze
Keyword(s):  
Light Intensity ◽  
High Power ◽  
Clinical Relevance ◽  
High Power Density ◽  
Pulp Chamber ◽  
Cavity Preparation ◽  
Flow Rates ◽  
Chamber Temperature ◽  
Light Curing ◽  
Short Time

Clinical Relevance Because increase in temperature is related directly to light intensity and exposure time, curing devices with high power density (>1200 mW/cm2) should only be activated for a short time (<15 seconds), even in teeth without cavity preparation.

scholarly journals Comparison of temperature rise in the pulp chamber with different light curing units: An in-vitro study

2010 ◽  
Vol 13 (3) ◽  
pp. 132 ◽  
Author(s):  
RajeshA.V Ebenezar ◽  
R Anilkumar ◽  
R Indira ◽  
S Ramachandran ◽  
MR Srinivasan
Keyword(s):  
Temperature Rise ◽  
In Vitro Study ◽  
Vitro Study ◽  
Pulp Chamber ◽  
Light Curing

Temperature Changes in Silorane-, Ormocer-, and Dimethacrylate-Based Composites and Pulp Chamber Roof during Light-Curing

2009 ◽  
Vol 21 (2) ◽  
pp. 122-131 ◽  
Author(s):  
VESNA MILETIC ◽  
VLADIMIR IVANOVIC ◽  
BOJAN DZELETOVIC ◽  
MAJA LEZAJA
Keyword(s):  
Pulp Chamber ◽  
Temperature Changes ◽  
Light Curing

scholarly journals Effect of different stripping techniques on pulpal temperature: in vitro study

2019 ◽  
Vol 24 (1) ◽  
pp. 39-43
Author(s):  
Megha Sehgal ◽  
Payal Sharma ◽  
Achint Juneja ◽  
Piush Kumar ◽  
Anubha Verma ◽  
...  
Keyword(s):  
Critical Level ◽  
In Vitro Study ◽  
Frictional Heat ◽  
Water Spray ◽  
Pulp Chamber ◽  
Pulp Tissue ◽  
Temperature Changes ◽  
Stripping Method ◽  
Pulpal Temperature

ABSTRACT Introduction: Proximal stripping of enamel is a routine clinical procedure employed in orthodontics to create space or for balancing tooth size discrepancies. This procedure may result in heat transfer to the pulp, predisposing it to histopathological changes and necrosis of the pulp tissue. Objective: To measure the temperature changes in the pulp chamber during different stripping procedures. Methods: 80 proximal surfaces of 40 extracted human premolar teeth were stripped using four techniques: diamond burs in air-rotor handpiece with air-water spray; diamond burs in micromotor handpiece, with and without a coolant spray; and hand-held diamond strips. A J-type thermocouple connected to a digital thermometer was inserted into the pulp chamber for evaluation of temperature during the stripping procedure. Results: An increase in the pulpal temperature was observed for all stripping method. Diamond burs in micromotor handpiece without coolant resulted in the higher increase in temperature (3.5oC), followed by hand-held diamond strips (2.8oC), diamond burs in air-rotor with air-water spray (1.9oC); and the smallest increase was seen with diamond burs in micromotor handpiece with coolant (1.65oC). None of the techniques resulted in temperature increase above the critical level of 5.5oC. Conclusion: Frictional heat produced with different stripping techniques results in increase in the pulpal temperature, therefore, caution is advised during this procedure. A coolant spray can limit the increase in temperature of the pulp.

Pulp chamber temperature changes with visible-light-cured composites in vitro

1990 ◽  
Vol 6 (2) ◽  
pp. 99-102 ◽  
Author(s):  
H.E. Goodis ◽  
J.M. White ◽  
B. Gamm ◽  
L. Watanabe
Keyword(s):  
Visible Light ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Chamber Temperature
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