Effect of Cavosurface Margin Configuration of Class V Cavity Preparations on Microleakage of Composite Resin Restorations

2008 ◽  
Vol 9 (2) ◽  
pp. 122-129 ◽  
Author(s):  
Marjaneh Ghavamnasiri ◽  
Mahshid Bagheri
Keyword(s):  
Composite Resin ◽  
Nonparametric Analysis ◽  
Cavity Preparation ◽  
Class V ◽  
Gingival Margin ◽  
Dye Penetration ◽  
Significant Difference ◽  
Composite Resin Restorations ◽  
Resin Restorations

Abstract Aim The aim of this study was to compare the marginal leakage of hybrid and microfilled composite resin in Class V restorations with and without an enamel bevel. Methods and Materials Fifty-six cavities were prepared on the buccal and lingual surfaces of 28 extracted human molars using a round bur with the dimensions of 3×2×1.5 mm. The specimens were divided into two groups of 28 based on the cavosurface margin configuration (beveled and non- beveled). Each group was then divided into two subgroups (n=14) based on the type of composite resin (microfilled and hybrid) used for restoration. After completing restorative procedure, specimens were thermocycled and immersed in 0.5% basic fuchsine. Samples were embedded in polyester and then sectioned both mesiodistally and buccolingually. Dye penetration was observed with a stereomicroscope at 25x magnification. Statistical nonparametric analysis Kruskal-Wallis and Mann-Whitney tests were performed to compare the data (a=0.05). Results There was no statistically significant difference between the two types of composites and two types of enamel margins with respect to microleakage (P>5%). The degree of microleakage at the gingival margin located in dentin of each group was more than that of the enamel margin (P<5%). Conclusion An enamel bevel in a Class V cavity preparation had no effect on the reduction of marginal leakage using either hybrid or microfilled composite resin. Citation Bagheri M, Ghavamnasiri M. Effect of Cavosurface Margin Configuration of Class V Cavity Preparations on Microleakage of Composite Resin Restorations. J Contemp Dent Pract 2008 February; (9)2:122-129.

scholarly journals Influence of light intensity and curing cycle on microleakage of Class V composite resin restorations

2005 ◽  
Vol 13 (2) ◽  
pp. 193-197 ◽  
Author(s):  
Maria Jacinta M. Coelho Santos ◽  
Mário Honorato da Silva e Souza Júnior ◽  
Gildo Coelho Santos Júnior ◽  
Omar El-Mowafy ◽  
Ana Paula Chedid Cavalcanti ◽  
...  
Keyword(s):  
Composite Resin ◽  
Step Cycle ◽  
Class V ◽  
Dye Penetration ◽  
Group I ◽  
Light Curing ◽  
Composite Resin Restorations ◽  
Qth Light ◽  
Curing Cycle ◽  
Resin Restorations

The aim of this study was to determine the effect of a softstart polymerization method from Quartz-Tungsten-Halogen (QTH) and Plasma Arc (PAC) curing units on microleakage of Class V composite resin restorations with dentin cavosurface margins. Seventy-five bovine incisors received standardized class V cavities in all dentin margins. Teeth were divided into 5 equal groups according to the curing cycle. The cavities were incrementally restored with a composite resin (Single Bond/Z-100, 3M). Light curing was applied as follows: Group I: PAC light continuous-cycle curing at 1600 mW/cm² for 3s; Group II: PAC light step-cycle curing (2s at 800 mW/cm² then 4s at 1600 mW/cm²); Group III: QTH light continuous-cycle curing at 400 mW/cm² for 40s; Group IV: QTH light ramp-cycle curing (from 100 to 600 mW/cm² in 15s followed by 25s at 600 mW/cm²); Group V: QTH light pulse-delay curing (200 mW/cm² for 3s followed by 3 min delay then 600 mW/cm² for 30s). Teeth were stored in distilled water at 37ºC for 30 days and then subjected to thermocycling for 500 cycles at 5 and 55ºC. Root apices were sealed and teeth coated with nail varnish before they were immersed in 0.5% fuchsine red dye solution. Teeth were then sectioned and slices were scanned with a computer scanner to determine the area of dye leakage using a computer program (Image Tools). Images of tooth slices were also visually examined under magnification and dye penetration along the tooth/restoration interface was scored. Significant differences in the degree of dye penetration and leakage were detected between groups (p<.05). Groups I and II had significantly higher values of dye penetration and leakage than groups III, IV and V. In conclusion, the use of PAC light curing in a continuous or step cycle modes resulted in increased microleakage of Class V resin composite restorations compared with medium intensity QTH light curing. Pulse, ramp and continuous-cycle curing modes with QTH light resulted in similar degrees of microleakage.

Influence of Er:YAG Laser on Cavity Preparation and Surface Treatment in Microleakage of Composite Resin Restorations

2006 ◽  
Vol 24 (2) ◽  
pp. 214-218 ◽  
Author(s):  
Michelle A. Chinelatti ◽  
Renata P. Ramos ◽  
Daniela T. Chimello ◽  
Silmara A.M. Corona ◽  
Jesus D. Pécora ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Composite Resin ◽  
Er:Yag Laser ◽  
Cavity Preparation ◽  
Composite Resin Restorations ◽  
Resin Restorations

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&gt;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&lt;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

Microleakage in class V composite resin restorations treated with CO 2 laser: an in-vitro study

2000 ◽  
Author(s):  
Andrea Naddeo Lopes da Cruz ◽  
Narciso Garone Netto ◽  
Adriana Fruges Pagliari ◽  
Juliana Matson ◽  
Ricardo S. Navarro ◽  
...  
Keyword(s):  
Composite Resin ◽  
In Vitro Study ◽  
Vitro Study ◽  
Class V ◽  
Composite Resin Restorations ◽  
Resin Restorations

scholarly journals Cavity Preparation with Er:YAG Laser or Rotary Instruments: Investigation of the Composite Resin Restorations Interface

2011 ◽  
Vol 2 (2) ◽  
pp. 83-87 ◽  
Author(s):  
Carlos Rocha Gomes Torres ◽  
Maria Filomena Rocha Lima Huhtala ◽  
Maria Amélia Máximo de Araújo ◽  
Simone Cristina Teixeira ◽  
Rodrigo Máximo de Araújo
Keyword(s):  
High Speed ◽  
Composite Resin ◽  
Er:Yag Laser ◽  
Statistical Tests ◽  
Statistical Significance ◽  
Nitrate Solution ◽  
Adhesive Systems ◽  
Cavity Preparation ◽  
Composite Resin Restorations ◽  
Resin Restorations

ABSTRACT This study evaluated the sealing of composite resin restorations after cavity preparation with high speed diamonds burs or Er:YAG laser. Two different adhesive systems were used; conventional and self-etching. Seventy bovine incisors were divided into groups according to the cavity treatment (N = 10): G1 (bur + acid + Excite); G2 (bur + One Up); G3 (bur + laser + Excite); G3 (bur + laser + One Up); G4 (laser + acid + Excite); G5 (laser + One Up) and G6 (laser + Excite). Restorations were performed with Filtek Z250 3M/ESPE. The specimes were then thermocycled and placed in a vacuum machine, at a negative atmosphere of 20 inch Hg for 5 minutes, for removal of entrapped air. This procedure was followed by immersion in a 50% silver nitrate solution. The teeth were sectioned and the evaluation of the marginal leakage was performed in a light stereomicroscope. The results were submitted to the ANOVA and Tukey statistical tests. It was concluded that preparations performed with high-speed turbines and Er:YAG laser presented the same performance; preparations with Er:YAG laser submitted to acid-etching and conventional adhesive system presented high values of marginal leakage, with statistical significance; conventional and self-etching adhesive systems presented the same performance as to marginal microleakage.

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.

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