Fresh AH Plus Jet had very potent antifungal activity. All sealers, except GuttaFlow, exhibited antifungal activity when freshly mixed.
Objectives:It was aimed to investigate the temperature changes in primary teeth pulp chamber during the curing/setting of bulk-fill restorative materials with different nanoparticle contents.Methods:Twenty-five extracted, primary mandibular second molars were prepared as a Class II cavity. Five bulk-fill restorative materials consisting of Equia Fil (HVGIC), glass carbomer (GC) cement, Sonic Fill (SF), X-tra Fil (XF), and Quix Fil (QF) were tested. The measurement of the pulp chamber temperature changes (starting temperature 37°C) during setting/curing was performed with a J type thermocouple. The data, differences between highest and initial temperature values, were recorded and analyzed by one-way ANOVA.Results:The temperature changes in the pulp chamber were in EF (2.81°C), GC (7.92°C), SF (3.33°C), XF (3.43°C), and QF (3.02°C). There were statistically significant differences between temperature changes in groups (P < 0.05).Conclusion:The tested bulk-fill resin composites and high-viscosity glass ionomer cement do not increase the intrapulpal temperature in primary teeth during the curing/setting.
The aim of this study is to compare microhardness, roughness and micromorphology of the examined materials of a newly developed glass carbomer dental filling material to two different resin modified glass ionomers and a glass ionomer dental filling material. Specimens tested were prepared from a glass carbomer without gloss (Glass Carbomer, GCP), a glass carbomer (Glass Carbomer, GCP) with gloss, two different resin modified glass ionomers (Fuji II LC, GC and Riva LC, SDI) and a glass ionomer (Equia, GC). Seven specimens of each material were prepared according to manufacturer's recommendations. After setting, samples were polished and stored in 37• C distilled water for 24 h. Indentation microhardness of examined restorative materials was measured using the Vickers indenters. In addition surface roughness of the materials was measured using surface profilemeter. Surface morphology was analyzed by using scanning electron microscopy. There was a significant difference in microhardness and roughness between the restorative materials (p < 0.05). The highest microhardness was measured for Equia and lowest for glass carbomer with gloss. The roughness was fully definite for the glass carbomer with gloss and indefinite for the glass carbomer without gloss. Small cracks and voids were observed in all groups. High viscosity glass ionomer cement Equia exhibits the high physical strength than RMGIC. Gloss application does not influence the hardness behavior of GCP.
The aim of this study is to determine the hardness and roughness of glass ionomer cement, glass carbomer, and compomer by nanoindentation. Three different dental restorative materials: glass ionomer cement, glass carbomer cement, and compomer were used. Disc specimens (10 mm × 1 mm) were prepared from each material using teflon mold. All specimens were light cured according to the manufacturer's instructions. The specimens were then mounted in polyacrilic resin. After grinding and polishing the specimens were stored in distilled water at 37• C for 1 day. The specimens were investigated using nanoindenter. The highest nanohardness was measured for glass ionomer cement and the lowest for glass carbomer. Regarding roughness, glass ionomer cement and compomer showed the highest mean values. Glass ionomer cement and compomer exhibited similar nanomechanical properties. Glass carbomer had superior ability to be polished up.
[Abstract in English is at the end of the manuscript] GİRİŞDental arkta belirli bir bölgede olması gerekenden daha fazla sayıdaki dişlere süpernümerer dişler denir.1 Sü-pernümerer dişler daimi dentisyonda daha sık olmakla beraber, hem daimi hem de süt dentisyonda gözlene-bilmektedir.2 Hiperdonti terimi, süpernümerer diş içeren dentisyonu tanımlamak için kullanılır.2 Süpernümerer dişlerin etyolojisi tam olarak bilinmemekle beraber, diş tomurcuğunun tamamen ikiye ayrılması veya normal sayıdaki diş tomurcuğu oluşumundan sonra devam eden dental lamina aktivasyonuna bağlı olarak geliştiği öne sürülen teorilerdir. Bu dişlerin kalıtsal olarak ortaya çı-kabildiği de savunulmaktadır. 1,3 Süpernümerer dişler sıklıkla erkeklerde ve premaksiller bölgede gözlenmektedir.4-7 Literatürde süpernü-merer dişler lokalizasyonlarına göre mesiodens (iki ön kesici arasında), parapremolar (küçük azı dişler arasında) paramolar (büyük azı dişler arasında) ve distomolar (üçüncü büyük azı distalinde) olarak sınıflandırmıştır. 2,8Süpernümerer dişler sürme bozukluğu, sürme gecikmesi, dişlerde yer değişiklikleri, yer darlığı, primordial veya foliküler kist oluşumları, ilgili bölgede ağrı ve şişlik, komşu dişlerde patolojik kök rezorpsiyonları gibi çeşitli problemlere sebep olabilmektedir. [5][6][7] Çok sayıda süpernümerer dişe aynı olguda rastlanması çok nadirdir ve genellikle sistemik bir rahatsızlık veya sendromla birlikte görülür. Süpernümerer dişlerin en sık görüldüğü sendromlar Gardner Sendromu, EhlerDanlos Sendromu, Kleidokranial Disostozis, NanceHoran Sendromu, Fabry-Anderson Sendromu, Trikorinofalangeal Sendrom ve dudak-damak yarıkları- Özgün araştırma makalesiÇukurova bölgesinin süpernümerer diş karakteristikleri: çok merkezli retrospektif bir çalışma Acta Odontol Turc 2014;31(2):84-8
The aim of this study is the comparative evaluation of surface roughness, elastic modulus and hardness values of some new generation fissure sealants using nanoindentation method and triboindenter. In this study, we have tested five different materials of dental fissure sealant in five groups with six specimens in each. Tested specimens were prepared from the following materials; Fuji Triage as a glass ionomer, Glass Seal as a glass carbomer, Ultra Seal XT Hydro, Teethmate F-1 and Defence Chroma as three resin composites. In the study, Hysitron Triboindenter TI 950 machine was used for nanohardness measurements. This machine has load resolution of less than 1 nN and displacement resolution of 0.04 nm. Data were statistically analysed using one-way analysis of variance (ANOVA) and Kolmogorov-Smirnov Z tests. Hardness values of Fuji Triage, Glass Seal, Ultra Seal XT Hydro were fairly close. Same situation was seen between Teethmate F-1 and Defence Chroma. However, hardness values of the Teethmate F-1 and Defence Chroma was lower than in other examined materials. We can also say that the Defence Chroma has the lowest elastic modulus and Fuji Triage has the highest one among the examined materials. Surface of Teethmate F-1 was the roughest. On the other hand, Ultra Seal XT Hydro has the smoothest surface.
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