Original scientific paper
https://doi.org/10.15644/asc50/4/1
In-vitro Study on Temperature Changes in the Pulp Chamber Due to Thermo-Curing of Glass Ionomer Cements
Raimond NB van Duinen
; Barts and the London School of Medicine and Dentistry, London, UK
Saroash Shahid
; Barts and the London School of Medicine and Dentistry, London, UK
Robert Hill
; Barts and the London School of Medicine and Dentistry, London, UK
Domagoj Glavina
; Department of Paediatric and Preventive Dentistry, School of Dental Medicine University of Zagreb, Zagreb, Croatia
Abstract
The application of the Glass Ionomer Cements in clinical dentistry is recommended due to properties such as fluoride release, chemical adhesion to tooth, negligible setting shrinkage, and coefficient of thermal expansion close to tooth, low creep, and good color stability. However, the cement is vulnerable to early exposure to moisture due to slow setting characteristics. The uses of external energy such as ultrasound and radiant heat (Thermo-curing) have been reported to provide acceleration of the setting chemistry and enhance physical properties. Aim: The aim of this in vitro study was to analyze temperature changes in the pulpal chamber when using radiant heat to accelerate the setting of GICs. Matherials and methods: The encapsulated GIC Equia Forte was used for this study. The temperature changes in the pulp were measured using thermocouple in the cavities which were 2,6 and 4,7mm deep with and without filling. Results: The results showed that a temperature rise (ΔT) in the
pulp chamber was 3,7°C. ΔT for the 2.6mm and 4.7mm deep cavity and without placing any restoration the temperature was 4,2°C and 2,6°C respectively. After the restoration has been placed, the ΔT range in the pulp chamber was lower ranging from 1.9°C to 2.4°C. Conclusion: It could be concluded that Thermo-curing of the GIC during the setting is safe for the pulp and can be recommended in
clinical practice.
Keywords
Root Canal Preparation; Dental Pulp Cavity; Glass Ionomer Cements; Temperature
Hrčak ID:
170596
URI
Publication date:
15.12.2016.
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