Impression heater: effectiveness of the thermal accelerator of dental impressions.

IF 1.1 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Marco DE Luca, Lorenzo Bevilacqua
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Abstract

Background: The success in acquiring a precision impression in the dental field is a compromise between the processing time and the setting time of the impression material. A device called "Impression Heater" (EU application n° EP20186042.6) has recently been patented, which consists of a self-heating disposable adhesive patch with an exothermic chemical reaction to be placed on the dental impression tray. The aim of the study was to evaluate the effectiveness of a thermal impression accelerator in reducing the setting time of different elastomers.

Methods: Three samples of 5 different elastomeric materials (width 6 mm x length 50 mm x depth 3-5-7 mm) the hardening of the material was evaluated at intervals of 15 seconds using an ASTM 2240 Shore-A durometer at 20 °C. The same procedure was replicated 3 times after positioning on a Impression Heater at temperatures of 35 °C, 50 °C and 65 °C, for each material.

Results: An increase in the impression material temperature from 35 °C to 50 °C reduces the setting time of an amount between 38.1% and 45.8%. Increasing the temperature from 35 °C to 65 °C results in a reduction of the setting time between 52.4% and 66.9%. At higher temperatures, the greater thickness of the impression material requires longer hardening times.

Conclusions: The tests carried out confirm the validity of the patented idea which reduces the time of impression taking while keeping the working time sufficiently long for the operator to manoeuvre.

印模加热器:有效的牙印热加速器。
背景:在牙科领域获得精确印模的成功是在印模材料的加工时间和凝固时间之间的妥协。一种名为“印模加热器”(EU申请号EP20186042.6)的设备最近获得了专利,该设备由一个具有放热化学反应的自加热一次性粘合剂贴片组成,放置在牙印模托盘上。该研究的目的是评估热印象促进剂在减少不同弹性体凝结时间方面的有效性。方法:使用ASTM 2240 Shore-A硬度计在20°C下,每隔15秒评估5种不同弹性体材料(宽度6 mm x长度50 mm x深度3-5-7 mm)的3个样品的材料硬化。对于每种材料,在35°C、50°C和65°C的温度下,在印象加热器上定位后,重复同样的程序3次。结果:压模材料温度从35℃升高到50℃,可使凝固时间减少38.1% ~ 45.8%。将温度从35℃提高到65℃,凝固时间缩短了52.4% ~ 66.9%。在较高的温度下,越大厚度的压模材料需要更长的硬化时间。结论:所进行的测试证实了专利的有效性,减少了印象的时间,同时保持工作时间足够长的操作人员操纵。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Minerva dental and oral science
Minerva dental and oral science DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.50
自引率
5.00%
发文量
61
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