scholarly journals Marginal microleakage of resin-modified glass-ionomer and composite resin restorations: Effect of using etch-and-rinse and self-etch adhesives

2012 ◽  
Vol 23 (3) ◽  
pp. 378 ◽  
Author(s):  
Maryam Khoroushi ◽  
TayebehMansouri Karvandi ◽  
Bentolhoda Kamali ◽  
Hamid Mazaheri
Keyword(s):  
Composite Resin ◽  
Glass Ionomer ◽  
Etch And Rinse ◽  
Resin Modified Glass Ionomer ◽  
Composite Resin Restorations ◽  
Self Etch ◽  
Resin Restorations

scholarly journals Effect of Cavity Disinfection with Chlorhexidine on Marginal Gap of Class V Composite Restorations Bonded with a Universal Adhesive Using Self-Etch and Etch-and-Rinse Bonding Strategy

2020 ◽  
Author(s):  
Soodabeh Kimyai ◽  
Narmin Mohammadi ◽  
Mahmoud Bahari ◽  
Elahe Pesyanian ◽  
Farhood Pesyanian
Keyword(s):  
Composite Resin ◽  
Gap Size ◽  
Marginal Gap ◽  
Universal Adhesive ◽  
Class V ◽  
Etch And Rinse ◽  
The Mean ◽  
Composite Resin Restorations ◽  
Self Etch ◽  
Resin Restorations

Objectives: This in-vitro study aimed to evaluate the effect of cavity disinfection with chlorhexidine (CHX) on marginal gaps of Class V composite resin restorations bonded with a universal adhesive using self-etch and etch-and-rinse bonding strategy. Materials and Methods: Sixty sound human premolars were randomly assigned to two groups (n=30): group 1 (CHX) and group 2 (no CHX). Each group was divided into two subgroups (n=15) according to the bonding strategy of the universal adhesive (self-etch or etch-and-rinse). Class V cavities were prepared on the buccal surfaces of the teeth. The occlusal and gingival margins of the cavities were placed in enamel and dentin, respectively. In the first and second subgroups of both groups, the All-Bond Universal adhesive was applied with self-etch and etch-and-rinse bonding strategy, respectively. After restoration and thermocycling, the samples were sectioned, and marginal gaps at the gingival margins were measured in micrometer (µm) under a stereomicroscope. Two-way analysis of variance (ANOVA) was used to compare marginal gaps between the groups and the subgroups. Results: The mean marginal gap size was significantly affected by cavity disinfection (P=0.001) and bonding strategy (P=0.002). However, the interaction effect of these two factors on the mean marginal gap size was not significant (P=0.79). Conclusion: The use of CHX resulted in larger marginal gaps at the gingival margins of Class V composite resin restorations. Irrespective of disinfection, the self-etch bonding strategy resulted in larger marginal gaps compared to the etch-and-rinse bonding strategy.

scholarly journals Can surface protection prevent damage in margins of composite resin restorations after simulated endogenous erosion?

2019 ◽  
Vol 18 ◽  
pp. e191462
Author(s):  
Luana Mendonça Dias ◽  
Janaina Emanuela Damasceno ◽  
Patricia Akemi Nishitani Shibasaki ◽  
Max José Pimenta Lima ◽  
Roberto Paulo Correia de Araújo ◽  
...  
Keyword(s):  
Composite Resin ◽  
Adhesive System ◽  
Negative Control ◽  
Marginal Adaptation ◽  
Glass Ionomer ◽  
Surface Protection ◽  
Resin Modified Glass Ionomer ◽  
Composite Resin Restorations ◽  
Resin Sealant ◽  
Resin Restorations

Aim: The study investigated the effect of using surface protection agents in the adaptation of external and internal margins of restorations subjected to simulated erosion. Methods: Cavities with margins in dentin were prepared in bovine incisors (n=120). Adhesive restorations were placed using a three-step etch&rinse adhesive system and nanofilled composite resin. The specimens were divided into four groups, according to the surface protection: negative control, topical application of fluoride (TAF), resin sealant and resin-modified glass ionomer varnish (RMGI varnish). Afterwards, they were divided into three sub-groups, according to the exposure to a simulated solution of gastric acid (DES) (5% HCl, pH=2,2) and subsequent remineralization (RE): negative control, 9 and 18 cycles of DES-RE. The evaluation of the tooth-restoration interface was performed on the internal and frontal images with the aid of a stereoscopic microscope (15x), and the percentage of continuous margins without adhesive failures was quantified. Results: In the external margins, only those groups with surface protection using sealants (resin and glass-ionomer) did not exhibit a significant decrease in the percentage of continuous margins after the erosive challenges. After 18 cycles of DES-RE, the use of resin-modified glass ionomer varnish resulted in the highest percentage of continuous margins. Conclusion: It was concluded that physically covering the surfaces with a sealing agent preserved the marginal adaptation of composite resin restorations exposed to endogenous erosive challenges.

Efficacy of Four Lining Materials in Sandwich Technique to Reduce Microleakage in Class II Composite Resin Restorations

2014 ◽  
Vol 39 (3) ◽  
pp. 256-263 ◽  
Author(s):  
SM Moazzami ◽  
N Sarabi ◽  
H Hajizadeh ◽  
S Majidinia ◽  
Y Li ◽  
...  
Keyword(s):  
Composite Resin ◽  
Class Ii ◽  
Repeated Measurements ◽  
Glass Ionomer ◽  
Sandwich Technique ◽  
Dye Penetration ◽  
Resin Modified Glass Ionomer ◽  
Group A ◽  
Composite Resin Restorations ◽  
Resin Restorations

SUMMARY Objectives The aim of the present study was to evaluate the effect of four different sandwich techniques on gingival microleakage of Class II direct composite resin restorations. Materials and Methods Fifty sound human premolars were selected and randomly divided into five groups (n=10). Class II box only cavities were prepared in one of the proximal surfaces of each tooth with a gingival margin located approximately 0.5 mm below the cemento-enamel junction. Group A (control) was restored incrementally with composite resin (Tetric Ceram). Groups B, C, D, and E were restored with the sandwich technique using a compomer (Compoglass F), flowable composite resin (Tetric Flow), self-cure composite resin (Degufill SC), or resin modified glass ionomer (Fuji II LC), respectively. After thermal-load cycling, the specimens were immersed in 0.5% basic fuschin for 24 hours. Dye penetration (10−1 mm) was detected using a sectioning technique. Data were analyzed with repeated measurements and Duncan test at α=0.05. Results The least amount of microleakage was detected in the incremental group (1.28 ± 0.98). The sandwich technique using resin modified glass ionomer (7.99 ± 9.57) or compomer (4.36 ± 1.78) resulted in significantly more leakage than did the sandwich technique using flowable (1.50 ± 1.97) or self-cure composite (2.26 ± 1.52). Conclusion According to the results of this study, none of the four sandwich technique composite resin restorations used in this study could reduce gingival microleakage to a greater degree than the incremental technique.

scholarly journals Effect of Dental Erosion and Methods for its Control on the Marginal and Internal Adaptation of Restorations with Different Adhesive Systems

2019 ◽  
Vol 21 (5) ◽  
pp. 437-444
Author(s):  
Janaina Emanuela Damasceno ◽  
Felipe Vilasboas Rodrigues ◽  
Luana Mendonça Dias ◽  
Patricia Akemi Nishitani Shibasaki ◽  
Max José Pimenta Lima ◽  
...  
Keyword(s):  
Composite Resin ◽  
Adhesive System ◽  
Dental Erosion ◽  
Negative Control ◽  
Glass Ionomer ◽  
Protective Material ◽  
Etch And Rinse ◽  
Resin Modified Glass Ionomer ◽  
Internal Adaptation ◽  
Composite Resin Restorations

AbstractThe dentin exposed to erosive challenges is often superficially protected to prevent progression of the lesion. This study investigated the marginal and internal adaptation of composite resin restorations made on surfaces that had first been treated with different methods for controlling erosion. Cavities with margins in dentin were prepared in bovine incisors (n=360) and were divided into three groups according to the method for controlling the erosive challenge: negative control, topical application of fluoride and resin-modified glass ionomer varnish. The specimens were then randomly divided into three sub-groups according to the exposure to simulated gastric acid solution (DES) (5% HCl, pH=2.2) and subsequent remineralization (RE): negative control, 9 and 18 cycles of DES-RE. Finally, teeth were divided into four groups, depending on the bonding agent used for composite resin restoration (n=10): conventional etch-and-rinse adhesive system (2 and 3 steps) and self-etching (1 and 2 steps). Front and internal images of the interface tooth/restoration were recorded in stereoscopic microscope (15x) to quantify the percentage of adhesive failures. Despite the promising results of the resin-modified glass ionomer varnish after 9 cycles; no protective material prevented increased internal defects after 18 erosive cycles. More continuous internal margins were noted with etch-and-rinse acid systems after more intense erosion. The maintenance of internal margins in eroded substrates was positively influenced by the resin-modified glass ionomer varnish and, under the most aggressive challenge, by the use of etch-and-rinse adhesives systems. Keywords: Tooth Erosion. Dentin. Acid Gastric. ResumoA dentina exposta a desafios erosivos é muitas vezes superficialmente protegida para prevenir a progressão da lesão. Este estudo investigou a adaptação marginal e interna de restaurações de resina composta realizadas em superfícies que foram previamente tratadas com diferentes métodos para controlar a erosão. Cavidades com margens em dentina foram preparadas em dentes incisivos bovinos (n=360) e divididas em três grupos de acordo com o método de controle do desafio erosivo: controle negativo, aplicação tópica de flúor e verniz de ionômero de vidro modificado por resina. Os espécimes foram então divididos aleatoriamente em três subgrupos de acordo com a exposição à solução de ácido gástrico simulada (DES) (HCl a 5%, pH = 2,2) e posterior remineralização (RE): controle negativo, 9 e 18 ciclos de DES-RE. Por fim, os dentes foram divididos em quatro grupos, de acordo com o agente de união utilizado para a restauração da resina composta (n=10): sistema adesivo convencional (2 e 3 passos) e autocondicionante (1 e 2 passos). Imagens frontais e internas da interface dente/restauração foram registradas em microscópio estereoscópico (15x) para quantificar a porcentagem de falhas adesivas. Apesar dos resultados promissores do verniz de ionômero de vidro modificado por resina após 9 ciclos; nenhum material de proteção impediu o aumento de defeitos internos após 18 ciclos erosivos. Margens internas mais contínuas foram observadas com sistemas adesivos convencionais após erosão mais intensa. A manutenção das margens internas em substratos erodidos foi influenciada positivamente pelo verniz de ionômero de vidro modificado por resina e, sob o desafio mais agressivo, pelo uso de sistemas de adesivos convencionais. Palavras-chave: Erosão Dentária. Dentina. Ácido Gástrico.

A Two-year Clinical Comparison of Three Different Restorative Materials in Class II Cavities

2020 ◽  
Vol 45 (1) ◽  
pp. E32-E42 ◽  
Author(s):  
H Balkaya ◽  
S Arslan
Keyword(s):  
Composite Resin ◽  
Clinical Performance ◽  
Class Ii ◽  
High Viscosity ◽  
Glass Ionomer ◽  
Secondary Caries ◽  
Significant Difference ◽  
Composite Resin Restorations ◽  
Postoperative Sensitivity ◽  
Resin Restorations

SUMMARY Objectives: The aim of this clinical study was to evaluate the clinical performance of Class II restorations of a high-viscosity glass ionomer material, of a bulk-fill composite resin, and of a microhybrid composite resin. Methods and Materials: One hundred nine Class II restorations were performed in 54 patients using three different restorative materials: Charisma Smart Composite (CSC; a conventional composite resin), Filtek Bulk Fill Posterior Restorative (FBF; a high-viscosity bulk-fill composite), and Equia Forte Fil (EF; a high-viscosity glass ionomer). Single Bond Universal adhesive (3M ESPE, Neuss, Germany) was used for both conventional and bulk-fill composite resin restorations. The restorations were evaluated using modified US Public Health Service criteria in terms of retention, color match, marginal discoloration, anatomic form, contact point, marginal adaptation, secondary caries, postoperative sensitivity, and surface texture. The data were analyzed using the chi-square, Fisher, and McNemar tests. Results: Eighty-four restorations were evaluated at two-year recalls. There were clinically acceptable changes in composite resin restorations (FBF and CSC). In addition, no statistically significant difference was observed between the clinical performances of these materials in terms of all criteria (p>0.05). However, there was a statistically significant difference between the EF group and the FBF and CSC groups in all parameters except for marginal discoloration, secondary caries, and postoperative sensitivity (p<0.05). Conclusions: The tested bulk-fill and conventional composite resins showed acceptable clinical performance in Class II cavities. However, if EF is to be used for Class II restoration, its use should be carefully considered.

Marginal leakage in class V composite resin restorations with glass ionomer liners in vitro

1990 ◽  
Vol 63 (5) ◽  
pp. 522-525 ◽  
Author(s):  
R.S. Mathis ◽  
J.P. DeWald ◽  
C.R. Moody ◽  
J.L. Ferracane
Keyword(s):  
Composite Resin ◽  
Glass Ionomer ◽  
Class V ◽  
Composite Resin Restorations ◽  
Resin Restorations
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