جستجوی مقالات مرتبط با کلیدواژه "سرامیک سرد" در نشریات گروه "پزشکی"

Materials used for root filling include cold ceramics, gutta percha and endoseal MTA. In this study, our aim is to investigate and compare the marginal adaptation of channels filled with cold ceramic and gutta percha - endoseal MTA.

In this experimental laboratory study, 20 extracted human single-rooted teeth were used. After canal preparation, the teeth were divided into two equal groups including 10 teeth. In the first group, cold ceramics were prepared according to the manufacturer's instructions and compacted inside the channels. In the second group, they were filled with gutta-percha and endosyl sealer MTA by lateral compression method. After one week, cross-sectional incubation was performed on the samples at 3 mm and 6 mm end to obtain a thickness of 3 mm and the maximum gap in microns between the root and wall fillers in the cross section directly by electron microscopy. Material / dentin contact was measured by Pearson, Spearman, and t-test.

The mean distance between root and tooth filling materials in the cold ceramic group was4.96±2.87 microns and in the second group was 12.03 ± 5.22 microns, which was statistically significant (P = 0.001).

In root canal filling, the degree of edge alignment in teeth filled with cold ceramics is significantly lower than that of gutta percha and endothelial sealant MTA.

Nowadays, in the treatment of necrotic teeth with open apex, based on the availability of bioceramic biomaterials with the ability of calcified tissue induction on cement and bone and periodontal ligament repairment stimulation using these materials has become more acceptable than the traditional calcium hydroxide apexification method. Cold ceramic is one of these bioceramics that in previous studies has shown successful results in the treatment of apexification.

Case Report:

 This article was a report of a successful case of apexification with cold ceramic and 10-months follow up of second mandibular molar tooth of a 14-year-old girl. In 10-month-old follow up, the tooth was asymptomatic and the periapical lesion healed after 10 months.

: It seems that cold ceramic could be used as a desirable material in the treatment of apexification and to strengthen the regeneration of periapical tissue.

The aim of this study was to investigate the tooth discoloration caused by cold ceramic compared to MTA Angelus in contact with the washing solutions such as sodium hypochlorite (NaOCl) and normal saline.

50 samples of extracted human maxillary anterior teeth were selected. After preparing the access cavity, they were divided into 4 experimental groups and 1 control group (10 in each group). The access cavities of teeth in groups 2 and 4 were rinsed with 5.25% sodium hypochlorite and those in groups 1 and 3 were rinsed with normal saline. Then, after drying, 3 mm thickness of cold ceramic (groups 1 and 2) and MTA Angelus (groups 3 and 4) were placed in the access cavities of the teeth. After setting of the materials, all specimens were restored with a resin modified glass ionomer. Based on the CIE Lab system, each sample’s total color change (∆E) was obtained before, one, and 90 days after application. Data were statistically analyzed using the Wilcoxon test.

According to the results, there was no statistically significant difference in the average tooth discoloration between the groups filled with cold ceramic and in different time periods (P>0.05). While, in the groups filled with MTA Angelus, the difference in the average tooth discoloration in 90 days after application was significantly higher than one day (P<0.05).

The results of this study showed that compared to MTA Angelus, cold ceramic causes less tooth discoloration over time and therefore, it can be suggested as a more suitable alternative endodontic cement than MTA Angelus.