Influence of Curing Methods and Matrix Type on the Marginal Seal of Class II Resin-based Composite Restorations In Vitro

2006 ◽  
Vol 31 (1) ◽  
pp. 97-105 ◽  
Author(s):  
N. Hofmann ◽  
A. Hunecke
Keyword(s):  
High Intensity ◽  
Clinical Relevance ◽  
Class Ii ◽  
Matrix Type ◽  
Composite Restorations ◽  
Soft Start ◽  
Curing Methods ◽  
Photo Curing ◽  
Selection Of

Clinical Relevance Selection of photo-curing protocol (high intensity vs soft-start) and matrix type (transparent vs metal) did not influence the margin quality and marginal seal of Class II resin-based composite restorations.

scholarly journals Comparison of Proximal Contacts of Class II Resin Composite Restorations In Vitro

2006 ◽  
Vol 31 (6) ◽  
pp. 688-693 ◽  
Author(s):  
B. A. C. Loomans ◽  
N. J. M. Opdam ◽  
F. J. M. Roeters ◽  
E. M. Bronkhorst ◽  
R. C. W. Burgersdijk
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Composite Restorations ◽  
Composite Restoration

Clinical Relevance When placing a Class II resin composite restoration, the use of sectional matrix systems and separation rings to obtain tight proximal contacts is recommended.

The Influence of Matrix Type on the Proximal Contact in Class II Resin Composite Restorations

2010 ◽  
Vol 35 (4) ◽  
pp. 454-462 ◽  
Author(s):  
D. Kampouropoulos ◽  
C. Paximada ◽  
M. Loukidis ◽  
A. Kakaboura
Keyword(s):  
Contact Area ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Matrix Type ◽  
Composite Restorations

Clinical Relevance The types of matrices assessed, metal or transparent, circumferential or sectional, straight or pre-contoured, were not able to adequately reconstruct all the characteristics of the proximal contact area of an intact tooth in Class II resin composite restorations.

Class II Composite Restorations: Importance of Cervical Enamel In Vitro

2011 ◽  
Vol 36 (2) ◽  
pp. 187-195 ◽  
Author(s):  
T Laegreid ◽  
NR Gjerdet ◽  
PV von Steyern ◽  
A-K Johansson
Keyword(s):  
Fracture Strength ◽  
Clinical Relevance ◽  
Class Ii ◽  
Composite Restorations ◽  
Composite Restoration

Clinical Relevance The presence of enamel at the cervical margin of a class II preparation increases the fracture strength of the composite restoration at the marginal ridge, but fractures are more complicated when they occur.

scholarly journals Influence of Volumetric Shrinkage and Curing Light Intensity on Proximal Contact Tightness of Class II Resin Composite Restorations: In Vitro Study

2012 ◽  
Vol 37 (2) ◽  
pp. 205-210 ◽  
Author(s):  
H El-Shamy ◽  
MH Saber ◽  
CE Dörfer ◽  
W El-Badrawy ◽  
BAC Loomans
Keyword(s):  
Light Intensity ◽  
High Intensity ◽  
Resin Composite ◽  
In Vitro Study ◽  
Class Ii ◽  
Volumetric Shrinkage ◽  
Low Intensity ◽  
Composite Restorations ◽  
Curing Light

SUMMARY Background Proximal contact tightness of class II resin composite restorations is influenced by a myriad of factors. Previous studies investigated the role of matrix band type and thickness, consistency of resin composite, and technique of placement. However, the effect of volumetric shrinkage of resin and intensity of curing light has yet to be determined. Thus, the aim of this study was to identify the influence of these factors on the proximal contact tightness when restoring class II cavity preparations in vitro. Methods Sixty artificial molars were restored with either a low-shrinkage (Filtek Silorane, 3M ESPE) or a conventional (Z100, 3M ESPE) composite and polymerized with low-intensity (Smartlite IQ2, Dentsply) or high-intensity light curing units (DemiTM, Kerr). Proximal contact tightness was measured using the Tooth Pressure Meter. Data were statistically analyzed using one-way analysis of variance and Tukey post hoc test. Results Use of low-shrinkage composite (Filtek Silorane) resulted in significantly tighter proximal contacts compared to the use of conventional composite (Z100) when cured with the same polymerization unit (p<0.001). Moreover, the low-intensity curing unit (IQ2) resulted in significantly tighter contacts than the high-intensity unit when material is constant (p<0.001). Conclusions Low-shrinkage resin composite and low curing light intensity is associated with tighter proximal contact values.

scholarly journals In Vitro Comparison of Microleakage of Posterior Resin Composites With and Without Liner Using Two-Step Etch-and-Rinse and Self-etch Dentin Adhesive Systems

2011 ◽  
Vol 36 (2) ◽  
pp. 213-221 ◽  
Author(s):  
S Kasraei ◽  
M Azarsina ◽  
S Majidi
Keyword(s):  
Clinical Relevance ◽  
Class Ii ◽  
Resin Composites ◽  
Adhesive Systems ◽  
Sandwich Technique ◽  
Composite Restorations ◽  
Etch And Rinse ◽  
Self Etch ◽  
In Vitro Comparison

Clinical Relevance The use of resin-modified glass ionomers as cavity liners in the closed-sandwich technique reduced microleakage in Class II composite restorations.

scholarly journals Evaluation of Gingival Microleakage in Class II Composite Restorations with Different Lining Techniques: An In Vitro Study

Scientifica ◽  
2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Vedavathi Bore Gowda ◽  
B. V. Sreenivasa Murthy ◽  
Swaroop Hegde ◽  
Swapna Devarasanahalli Venkataramanaswamy ◽  
Veena Suresh Pai ◽  
...  
Keyword(s):  
Study Groups ◽  
Class Ii ◽  
Composite Liner ◽  
Flowable Composite ◽  
Composite Restorations ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Aim. To compare the microleakage in class II composite restorations without a liner/with resin modified glass ionomer and flowable composite liner.Method. Forty standardized MO cavities were prepared on human permanent mandibular molars extracted for periodontal reasons and then divided into 4 groups of ten specimens. The cavity preparations were etched, rinsed, blot dried, and light cured and Adper Single Bond 2 is applied. Group 1 is restored with Filtek P60 packable composite in 2 mm oblique increments. Group 2 is precure group where 1 mm Filtek Z350 flowable liner is applied and light cured for 20 sec. Group 3 is the same as Group 2, but the liner was cocured with packable composite. In Group 4, 1 mm RMGIC, Fuji Lining LC is applied and cured for 20 sec. All the teeth were restored as in Group 1. The specimens were coated with nail varnish leaving 1 mm around the restoration, subjected to thermocycling, basic fuchsin dye penetration, sectioned mesiodistally, and observed under a stereomicroscope.Results. The mean leakage scores of the individual study groups were Group 1 (33.40), Group 2 (7.85), Group 3 (16.40), and Group 4 (24.35). Group 1 without a liner showed maximum leakage. Flowable composite liner precured was the best.

Gingival Microleakage of Class II Resin Composite Restorations with Fiber Inserts

10.2341/06-86 ◽  
2007 ◽  
Vol 32 (3) ◽  
pp. 298-305 ◽  
Author(s):  
O. El-Mowafy ◽  
W. El-Badrawy ◽  
A. Eltanty ◽  
K. Abbasi ◽  
N. Habib
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Composite Restorations ◽  
Fiber Inserts

Clinical Relevance Fiber inserts incorporated at the gingival floor of Class II composite restorations resulted in a significant reduction of microleakage scores as compared to restorations made without inserts. This may lead to a reduced incidence of recurrent caries.

Factors Associated with Microleakage in Class II Resin Composite Restorations

10.2341/06-16 ◽  
2007 ◽  
Vol 32 (1) ◽  
pp. 60-66 ◽  
Author(s):  
S. Idriss ◽  
T. Abduljabbar ◽  
C. Habib ◽  
R. Omar
Keyword(s):  
Clinical Outcomes ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Gap Size ◽  
Marginal Gap ◽  
Factors Associated ◽  
Composite Restorations ◽  
Placement Technique

Clinical Relevance Even though marginal gap size was not shown to be a direct predictor for the extent of microleakage in resin composite restorations, both material and placement technique appear to be important determinants in microleakage and, thus, probably in clinical outcomes.

scholarly journals Influence of "soft start" polymerization on marginal sealing in resin composite restorations

2003 ◽  
Vol 50 (2) ◽  
pp. 59-64 ◽  
Author(s):  
Larisa Blazic ◽  
Slavoljub Zivkovic
Keyword(s):  
Resin Composite ◽  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Class Ii ◽  
Composite Resins ◽  
Human Teeth ◽  
Composite Restorations ◽  
Soft Start ◽  
Significant Difference ◽  
Bonding Systems

The purpose of this study was to evaluate the marginal microleakage in Class II with different materials in resin composite restorations cured by using "soft start" and standard polymerization techniques. Two adhesive Class II cavities were prepared in 50 human teeth with enamel in-between. Samples were divided into 5 groups and filled with composite resins, compatible flow resin composites and bonding systems. The ocluso-mesial restorations were cured with standard curing technique, and the ocluso-distal restorations were cured with "soft start" curing technique. After thermocycling, the teeth were immersed in silver nitrate solution and sectioned for leakage evaluation. The results pointed out, after "soft start" and standard curing techniques, that the best marginal behavior in Class II restorations was obtained with Tetric Ceram / Tetric Flow composite resins, then with Filtek Z 250 / Filtek Flow, followed by Admira Admira Flow and Point / Revolution composite materials. The deepest dye penetration was found in cavities with Diamond Lite / Diamond Link composite restorations. No statistically significant difference was found in the tested composite resin restorations, whether treated with "soft start" polymerization or with standard polymerization technique, in regard to marginal micro leakage.

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