scholarly journals The influence of root-end filling materials on bone healing – an experimental study

2014 ◽  
Vol 87 (4) ◽  
pp. 263-268
Author(s):  
Andreea Gulie Kui ◽  
Antonela Berar ◽  
Liana Lascu ◽  
Pompei Bolfa ◽  
Bianca Bosca ◽  
...  
Keyword(s):  
Experimental Study ◽  
Bone Healing ◽  
Inflammatory Reaction ◽  
Plasma Cells ◽  
Glass Ionomer Cement ◽  
Experimental Period ◽  
Tissue Reaction ◽  
Glass Ionomer ◽  
Dissolution Reaction ◽  
Ionomer Cement

Aims. The aim of this experimental study is to assess the bone healing phenomenon produced in the presence of several dental materials: a polycarboxylate cement, a glass-ionomer cement, a composite resin and MTA (mineral trioxide aggregate) based cement. Methods. The biocompatibility of four root-end fillings materials, used in periapical surgery was investigated after intra-osseous implantation of the materials in rats’ calvaria. Tissue reaction was studied at 2, 4, 6, 8, 10 and 12 weeks after implantation. We took into consideration the presence of inflammatory cells (polymorphonuclear leukocytes, macrophages, plasma cells, lymphocytes and giant cells) and classified the aspects of the histological samples according to the following scale: 0 - no inflammation, 1 – mild, isolated inflammation, 2 - moderate, localized inflammatory reaction, 3 - severe, diffuse and intense inflammatory reaction.Results. The inflammatory reaction was present at the six intervals for all the tested materials, but at 12 week interval, the reaction was minimal in all cases. Also, a dissolution reaction was observed for all the materials, less intense for glass-ionomer cement and polycarboxilate cement.Conclusions. At the end of the experimental period, glass-ionomer cement and polycarboxilate cement suffered a lesser dissolution reaction as compared to the second group of tested materials.

The use of glass ionomer cement in the reconstructıon of the dorsal L- strut: An experımental study on rabbıts

2014 ◽  
Vol 124 (8) ◽  
pp. E303-E308 ◽  
Author(s):  
Filiz Aydoğan ◽  
Arzu Tüzüner ◽  
Ilhan Ünlü ◽  
Şule Demirci ◽  
Emine Aydin ◽  
...  
Keyword(s):  
Experimental Study ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Ionomer Cement

Should the ossicle be denuded prior to the application of glass ionomer cement? An experimental study on rabbit

2011 ◽  
Vol 269 (3) ◽  
pp. 773-780 ◽  
Author(s):  
Gábor Ráth ◽  
László Kereskai ◽  
Miklós Bauer ◽  
Péter Bakó ◽  
Víta Bányavölgyi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Ionomer Cement

scholarly journals Synthesis and biocompatibility of an experimental glass ionomer cement prepared by a non-hydrolytic sol-gel method

2010 ◽  
Vol 21 (6) ◽  
pp. 499-507 ◽  
Author(s):  
Lucas da Fonseca Roberti Garcia ◽  
Fernanda de Carvalho Panzeri Pires-de-Souza ◽  
Juliana Mazzoneto Teófilo ◽  
Alexandre Cestari ◽  
Paulo Sergio Calefi ◽  
...  
Keyword(s):  
Inflammatory Reaction ◽  
Sol Gel ◽  
Glass Ionomer Cement ◽  
Control Group ◽  
Glass Ionomer ◽  
Gel Method ◽  
Sol Gel Method ◽  
Experimental Glass ◽  
Chronic Inflammatory Reaction ◽  
Ionomer Cement

The aims of this study were to demonstrate the synthesis of an experimental glass ionomer cement (GIC) by the non-hydrolytic sol-gel method and to evaluate its biocompatibility in comparison to a conventional glass ionomer cement (Vidrion R). Four polyethylene tubes containing the tested cements were implanted in the dorsal region of 15 rats, as follows: GI - experimental GIC and GII - conventional GIC. The external tube walls was considered the control group (CG). The rats were sacrificed 7, 21 and 42 days after implant placement for histopathological analysis. A four-point (I-IV) scoring system was used to graduate the inflammatory reaction. Regarding the experimental GIC sintherization, thermogravimetric and x-ray diffraction analysis demonstrated vitreous material formation at 110oC by the sol-gel method. For biocompatibility test, results showed a moderate chronic inflammatory reaction for GI (III), severe for GII (IV) and mild for CG (II) at 7 days. After 21 days, GI presented a mild reaction (II); GII, moderate (III) and CG, mild (II). At 42 days, GI showed a mild/absent inflammatory reaction (II to I), similar to GII (II to I). CG presented absence of chronic inflammatory reaction (I). It was concluded that the experimental GIC presented mild/absent tissue reaction after 42 days, being biocompatible when tested in the connective tissue of rats.

scholarly journals Finite Element Analysis in Setting of Fillings of V-Shaped Tooth Defects Made with Glass-Ionomer Cement and Flowable Composite

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 363 ◽  
Author(s):  
Tsanka Dikova ◽  
Tihomir Vasilev ◽  
Vesela Hristova ◽  
Vladimir Panov
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Glass Ionomer Cement ◽  
Adhesive Layer ◽  
Glass Ionomer ◽  
Element Analysis ◽  
Von Mises ◽  
Von Mises Stresses ◽  
Ionomer Cement

The aim of the present paper is to investigate the deformation–stress state of fillings of V-shaped tooth defects by finite element analysis (FEA). Two different materials are used—auto-cured resin-reinforced glass-ionomer cement (GIC) and flowable photo-cured composite (FPC). Two materials are placed into the cavity in one portion, as before the application of the composite the cavity walls are covered with a thin adhesive layer. Deformations and equivalent von Mises stresses are evaluated by FEA. Experimental study of micro-leakage is performed. It is established that there is an analogous non-homogeneous distribution of equivalent Von Mises stresses at fillings of V-shaped defects, made with GIC and FPC. Maximum stresses are generated along the boundaries of the filling on the vestibular surface of the tooth and at the bottom of the filling itself. Values of equivalent Von Mises stresses of GIC fillings are higher than that of FPC. Magnitude and character of deformation distribution at GIC and FPC fillings are similar—deformation is maximum along the vestibular surface of the filling and is 0.056 and 0.053 mm, respectively. In FPC fillings, the adhesive layer, located along the cavity/filling boundary, is characterized with greatest strain. The experimental study of micro-leakage has confirmed the adequacy of models used in FEA.

Microleakage of class II restoration with zirconia inlay: An in vitro study

2019 ◽  
pp. 61-67
Author(s):  
Xuan Anh Ngoc Ho ◽  
Anh Chi Phan ◽  
Toai Nguyen
Keyword(s):  
Glass Ionomer Cement ◽  
Class Ii ◽  
Resin Cement ◽  
Glass Ionomer ◽  
Resin Modified Glass Ionomer ◽  
Group 2 ◽  
Self Etch ◽  
Ionomer Cement ◽  
Group 1 ◽  
Composite Restoration

Background: Class II restoration with zirconia inlay is concerned by numerous studies about the luting coupling between zirconia inlay and teeth. The present study was performed to evaluate the microleakage of Class II zirconia inlayusing two different luting agents and compare to direct restoration using bulk fill composite. Aims: To evaluate the microleakage of Class II restorations using three different techniques. Materials and methods: The study was performed in laboratory with three groups. Each of thirty extracted human teeth was prepared a class II cavity with the same dimensions, then these teeth were randomly divided into 3 groups restored by 3 different approaches. Group 1: zirconia inlay cemented with self-etch resin cement (Multilink N); Group 2: zirconia inlay cemented with resin-modified glass ionomer cement (Fuji Plus); Group 3: direct composite restoration using bulk fill composite(Tetric N-Ceram Bulk Fill). All restorations were subjected to thermal cycling (100 cycles 50C – 55 0C), then immersed to 2% methylene blue solution for 24 hours. The microleakage determined by the extent of dye penetration along the gingival wall was assessed using two methods: quantitative and semi-quantitative method. Results: Among three types of restorations, group 1 demonstrated the significantly lower rate of leakage compared to the others, while group 2 and 3 showed no significant difference. Conclusion: Zirconia inlay restoration cemented with self-etch resin cement has least microleakage degree when compare to class II zirconia inlay restoration cemented with resin-modified glass ionomer cement and direct composite restoration using bulk fill composite. Key words: inlay, zirconia ceramic, class II restoration, microleakage.

Comparative Evaluation of Mechanical Properties of Ceramic Reinforced Glass Ionomer Cement and Type IX GIC:An Invitro Study

2019 ◽  
Vol 10 (12) ◽  
pp. 35
Author(s):  
Nagalakshmi Chowdhary ◽  
N. K. Kiran ◽  
A. Lakshmi Priya ◽  
Rajashekar Reddy ◽  
Arvind Sridhara ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Comparative Evaluation ◽  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Ionomer Cement
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