ÖN ISITMA İŞLEMİNİN CAM İYONOMER SİMANIN SERTLEŞME SÜRESİNE ETKİSİ

Year 2022, Volume: 8 Issue: 2, 34 - 38, 21.11.2022

Ebru Hazar Bodrumlu , Gözde Arslan

Abstract

Amaç: Dental restoratifler arasında önemli yeri olan cam iyonomer simanlarının sertleşme süresi, simanın erken dönemde neme karşı hassasiyeti ve çalışma koşulları göz önüne alındığında büyük önem arz etmektedir. Restoratif materyallerde ön ısıtma işlemi ile sertleşme sürelerinde farklılıklar oluşabilmektedir. Bu nedenle; çalışmanın amacı, dört farklı sıcaklıkta (4 °C,23 °C,39 °C,55 °C) hazırlanan cam iyonomer simanların sertleşme sürelerinin karşılaştırılmalı olarak değerlendirilmesidir.
Gereç ve yöntem: Bu çalışmada dört farklı sıcaklıkta hazırlanmış olan (4 °C, 23 °C, 39 °C, 55 °C) radyoopak cam iyonomer simandan (R&D Series Nova Glass-L, Imicryl, Konya, Turkey) hazırlanan diskler değerlendirilerek sertleşme süreleri karşılaştırıldı. Buzdolabında bekletilerek, oda ısısında bekletilerek ve 39 ºC ve 55 ºC sıcaklığa getirmek için ise kompozit ısıtma cihazı (Micerium, S.p.a., Avegno GE, Italya) kullanılarak ön ısı değerlerine ulaştırılan cam iyonomer siman bir cam tabakaya (100 mmx100 mmx4 mm) yerleştirilerek karıştırıldı. 10 mm çapında ve 2 mm kalınlığında silikon disklere yerleştirildi. Sertleşme süresini ölçmek için Vicat penetrasyon testi kullanıldı. Elde edilen veriler One Way ANOVA ve t testi ile analiz edilerek istatistiksel olarak değerlendirildi.
Bulgular: Cam iyonomer simanın dört farklı sıcaklık derecesinde sertleşme süreleri arasında istatistiksel açıdan anlamlı fark gözlendi. (p<0.05). 4 °C den 55 °C sıcaklık değerine kadar ısının artırılmasıyla sertleşme süresi azaldığı izlendi. En uzun sertleşme süresi 4 °C sıcaklıkta görülürken en kısa sertleşme süresi 39 °C sıcaklıkta gözlendi.
Sonuç: Cam iyonomer simana ön ısıtma işlemi ile sertleşme sürelerinde farklılıklar gözlenebilmektedir. Klinik kullanımda ihtiyaç duyulan süreye göre sertleşme süresini kısaltmak ya da arttırmak mümkündür.

Keywords

cam ionomer siman, ön ısıtma, sertleşme süresi

Supporting Institution

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Project Number

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Thanks

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THE EFFECT OF PREHEATING ON THE SETTING TIME OF GLASS IONOMER CEMENT

Abstract

Aim: The setting time of glass ionomer cement is important in terms of the sensitivity of the cement to moisture and working conditions in the early period. In restorative materials, there may be differences in the setting times with the preheating process. Therefore, the aim of the study is to compare the setting times of glass ionomer cements prepared at four different temperatures (4 °C, 23 °C, 39 °C, and 55 °C).
Methods: In this study, discs prepared from radiopaque glass ionomer cement preheated at four different temperatures (4 °C, 23 °C, 39 °C, 55 °C) were evaluated and their setting times were compared. Glass ionomer cement, which was reached to preheat values by keeping it in the refrigerator, keeping it at room temperature, and using a composite heating device to bring it to 39 ºC and 55 ºC, was placed on a glass layer and mixed. It was placed on 10 mm diameter and 2 mm thick silicone discs. Vicat penetration test was used to measure the setting time. The obtained data were analyzed statistically by using One Way ANOVA and t-test.
Results: A statistically significant difference was observed between the setting times of the glass ionomer cement at four different temperatures (p<0.05). It was observed that the setting time decreased with increasing temperature from 4 °C to 55 °C.
Conclusion: Differences in setting times can be observed with the preheating of glass ionomer cement. It is possible to decrease or increase the setting time according to the time needed in clinical usage.

Keywords

glass ionomer cement, preheating, setting time

Project Number

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