Temperature changes inside the molar pulp chamber and on the enamel and root surfaces induced by the CO2 laser beam, in vitro

1993 ◽  
Author(s):  
Ivica Anic ◽  
A. Dzubur ◽  
Karolj Skala ◽  
Jozo Sutalo
Keyword(s):  
Laser Beam ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Root Surfaces

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 Safety Irradiation Parameters of Nd:YAP Laser Beam for Endodontic Treatments: An In Vitro Study

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
A. Namour ◽  
S. Geerts ◽  
T. Zeinoun ◽  
R. De Moor ◽  
S. Nammour
Keyword(s):  
Laser Beam ◽  
Average Energy ◽  
In Vitro Study ◽  
Threshold Level ◽  
Human Teeth ◽  
Root Canals ◽  
Periodontal Tissues ◽  
Root Surfaces ◽  
Safety Range

Objective. Nd:YAP laser has several potentialities of clinical applications in endodontics. The aim of our study is to determine the safety range of irradiation parameters during endodontic application of Nd:YAP laser that can be used without damaging and overheating the periodontal tissue.Material and Methods. Twenty-seven caries-free single-rooted extracted human teeth were used. Crowns were sectioned to obtain 11 mm root canal length. Temperature increases at root surfaces were measured by a thermocouple during Nd:YAP laser irradiation of root canals at different energy densities. Canal irradiation was accomplished with a circular and retrograde movement from the apex until the cervical part of the canal during 10 seconds with an axial speed of 1 mm/s. Each irradiation was done in a canal irrigated continuously with 2.25% NaOCl solution.Results. Periodontal temperature increase depends on the value of energy density. Means and standard deviations of temperature increases at root surfaces were below 10°C (safe threshold level) when the average energy densities delivered per second were equal to or below 4981 J/cm2and 9554 J/cm2, respectively, for irradiations using a fiber diameter of 320 μm and 200 μm.Conclusions. Within the limitations of this study and under specific irradiation conditions, Nd:YAP laser beam may be considered harmless for periodontal tissues during endodontic applications.

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.

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

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 Impact of the Enamel Cleaning Procedure during Debonding on Endodontium Temperature: In Vitro Tests

2020 ◽  
Vol 10 (23) ◽  
pp. 8672
Author(s):  
Monika Machoy ◽  
Liliana Szyszka-Sommerfeld ◽  
Piotr Duda ◽  
Anna Wawrzyk ◽  
Krzysztof Woźniak ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Surface ◽  
In Vitro Tests ◽  
Water Cooling ◽  
Micro Ct ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Cleaning Procedure ◽  
Chamber Temperature

Interference with live tooth tissue during dental treatment affects the temperature within the pulp. The pulp is sensitive to temperature changes, which can cause its inflammation. The aim of this study was to analyze the dynamics of pulp chamber temperature changes in response to the enamel cleaning procedure after orthodontic treatment. In the presented in vitro studies, by using a thermal imaging camera, the change in the temperature of the vestibular wall of the pulp chamber of the incisors and premolars was assessed as a function of time under the influence of polishing the enamel with the silicone rubber and aluminum oxides used during the debonding procedure after completion of orthodontic treatment with fixed appliances. The relationship between dentin density and enamel from changing the chamber temperature was evaluated by using Micro computed tomography, microtomography (micro-CT). The maximum achieved tooth surface temperature during polishing was 52.34 °C without water cooling and 43.15 °C using water cooling. The time after which a safe pulp temperature of 40 °C was obtained without water cooling was 29.4 s, while the time with water cooling was 34.6 s. The correlation between the maximum and average temperature achieved and the density of the teeth was analyzed based on micro-CT scans. No correlation between enamel or dentin density and rise in temperature was found.

scholarly journals In-vitro Study on Temperature Changes in the Pulp Chamber Due to Thermo-Curing of Glass Ionomer Cements

2016 ◽  
Vol 50 (4) ◽  
pp. 287-291 ◽  
Author(s):  
Raimond van Duinen ◽  
Saroash Shahid ◽  
Robert Hill ◽  
Domagoj Glavina
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Pulp Chamber ◽  
Temperature Changes
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