Temperature rise caused in the pulp chamber under simulated intrapulpal microcirculation with different light-curing modes
| Autor: | Serdar Usumez, Sabri Ilhan Ramoglu, Tugrul Sari, Hilal Karamehmetoglu |
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| Rok vydání: | 2015 |
| Předmět: |
Curing Lights
Dental Materials science Time Factors Thermometers Dentistry Orthodontics Microcirculation Body Temperature Light curing Light source Incisor stomatognathic system Materials Testing medicine Humans Maxillary central incisor Dental Pulp Light-Curing of Dental Adhesives business.industry Ramoglu S. I. Karamehmetoglu H. Sari T. Usumez S. -Temperature rise caused in the pulp chamber under simulated intrapulpal microcirculation with different light-curing modes- ANGLE ORTHODONTIST cilt.85 ss.381-385 2015 Original Articles Thermocouple Wire stomatognathic diseases medicine.anatomical_structure Pulp (tooth) Dental Pulp Cavity business Biomedical engineering |
| Zdroj: | Angle Orthod |
| Popis: | Objective: To evaluate and compare intrapulpal temperature rise with three different light-curing units by using a study model simulating pulpal blood microcirculation. Materials and Methods: The roots of 10 extracted intact maxillary central incisors were separated approximately 2 mm below the cement-enamel junction. The crowns of these teeth were fixed on an apparatus for the simulation of blood microcirculation in pulp. A J-type thermocouple wire was inserted into the pulp chamber through a drilled access on the palatal surfaces of the teeth. Four measurements were made using each tooth for four different modes: group 1, 1000 mW/cm2 for 15 seconds; group 2, 1200 mW/cm2 for 10 seconds; group 3, 1400 mW/cm2 for 8 seconds; and group 4, 3200 mW/cm2 for 3 seconds. The tip of the light source was positioned at 2 mm to the incisor's labial surface. Results: The highest temperature rise was recorded in group 1 (2.6°C ± 0.54°C), followed by group 2 (2.57°C ± 0.62°C) and group 3 (2.35°C ± 0.61°C). The lowest temperature rise value was found in group 4 (1.74°C ± 0.52°C); this value represented significantly lower ΔT values when compared to group 1 and group 2 (P = .01 and P = .013, respectively). Conclusions: The lowest intrapulpal temperature rise was induced by 3200 mW/cm2 for 3 seconds of irradiation. Despite the significant differences among the groups, the temperature increases recorded for all groups were below the critical value of 5.6°C. |
| Databáze: | OpenAIRE |
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