The suitability of packable resin-based composites for posterior restorations

Manhart, Juergen; Chen, Hong Y.; Hickel, Reinhard

doi:10.14219/jada.archive.2001.0241

Cited by 50 publications

(45 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition to direct spectroscopic techniques, DC has also been indirectly evaluated by microhardness measurements [57], and a good linear correlation has generally been observed between DC and microhardness [28, 58,59]. In the present study, however, whereas it was possible to measure DC of the tested materials at all depths, this was not the case for KHN, due to softness in the following conditions: TEC at 5 mm (10-and 20-s irradiation time) and at 6 mm (all irradiation times), TECBF at 6 mm (10-s irradiation time), and SF at 4 mm (10-s irradiation time) and at 5 and 6 mm (all irradiation times).…”

Section: Discussionmentioning

confidence: 99%

Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites

et al. 2014

View full text Add to dashboard Cite

OBJECTIVES To evaluate the influence of irradiation time on degree of conversion (DC) and microhardness of high-viscosity bulk-fill resin composites in depths up to 6 mm. MATERIALS AND METHODS Four bulk-fill materials (Tetric EvoCeram Bulk Fill-TECBF; x-tra fil-XF; QuixFil-QF; SonicFill-SF) and one conventional nano-hybrid resin composite (Tetric EvoCeram-TEC) were irradiated for 10, 20, or 30 s at 1,170 mW/cm(2). DC and Knoop microhardness (KHN) were recorded after 24-h dark storage at five depths: 0.1, 2, 4, 5, and 6 mm. Data were statistically analyzed using ANOVA and Bonferroni's post-hoc test ( = 0.05). RESULTS With increasing bulk thickness, DC and KHN significantly decreased for TEC. TECBF and SF showed a significant decrease in DC and KHN at 4-mm depth after 10-s irradiation, but no decrease in DC after 30-s irradiation (p > 0.05). XF and QF demonstrated no significant DC decrease at depths up to 6 mm after irradiation of at least 20 s. At 4-mm depth, all materials tested achieved at least 80 % of their maximum DC value, irrespective of irradiation time. However, at the same depth (4 mm), only XF and QF irradiated for 30 s achieved at least 80 % of their maximum KHN value. CONCLUSIONS Regarding DC, the tested bulk-fill resin composites can be safely used up to at least 4-mm incremental thickness. However, with respect to hardness, only XF and QF achieved acceptable results at 4-mm depth with 30 s of irradiation. CLINICAL RELEVANCE Minimum irradiation times stated by the manufacturers cannot be recommended for placement of highviscosity bulk-fill materials in 4-mm increments. Conclusions: Regarding DC, the tested bulk-fill resin composites can be safely used up to at least 4-mm incremental thickness. However, with respect to hardness, only XF and QF achieved acceptable results at 4-mm depth with 30 s of irradiation.Clinical relevance: Minimum irradiation times stated by the manufacturers cannot be recommended for placement of high-viscosity bulk-fill materials in 4-mm increments.

show abstract

Section: Discussionmentioning

confidence: 99%

Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites

et al. 2014

View full text Add to dashboard Cite

show abstract

“…An important milestone in the history of modern restorative dentistry was the development of light-cured composite resins for direct procedures 1,7,9,14 . Improvements in composite resin mechanical properties and light curing devices have permitted their use in posterior teeth with greater reliability than was the case some years ago 1,3,7,9 .…”

Section: Introductionmentioning

confidence: 99%

“…Improvements in composite resin mechanical properties and light curing devices have permitted their use in posterior teeth with greater reliability than was the case some years ago 1,3,7,9 . Shrinkage stress, however, is one of the inherent disadvantages that occur when visible lightactivated resin composites are submitted to light polymerization.…”

Section: Introductionmentioning

confidence: 99%

“…Shrinkage stress, however, is one of the inherent disadvantages that occur when visible lightactivated resin composites are submitted to light polymerization. Direct composites have also been associated with undesirable characteristics such as excessive wear, deficient interproximal contacts, microleakage and postoperative sensitivity 1,7,9,12 . Indirect systems became popular to overcome these limitations of direct restorations 12,13 .…”

Section: Introductionmentioning

confidence: 99%

“…Manufacturers have increased the filler content and reduced the average filler particle size to produce resin-based composite materials for Class II posterior restorations, which need adequate strength and wear resistance to withstand masticatory forces to which they are subjected 9,14,16 . These posterior resin-based composites have basically the same chemistry and physical characteristics, however the cure conditions still are the most important difference between them.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diametral tensile strength of composite resins submitted to different activation techniques

et al. 2006

View full text Add to dashboard Cite

ABSTRACT:The aim of this study was to evaluate the diametral tensile strength (DTS) of composite resins submitted to different curing techniques. Four composite resins were tested in this study: Targis (Ivoclar), Solidex (Shofu), Charisma (Heraeus-Kulzer) and Filtek Z250 (3M Espe). Sixty-four cylindrical specimens were prepared and divided into eight groups according to each polymerization technique (n = 8). The indirect composite resins (Targis and Solidex) were polymerized with their respective curing systems (Targis Power and EDG-lux); Charisma and Filtek Z250 were light-cured with conventional polymerization (halogen light) and additionally, with post-curing systems. Specimens were stored in artifi cial saliva at 37°C for one week. DTS tests were performed in a Universal Testing Machine (0.5 mm/min). The data were statistically analyzed by ANOVA and Duncan tests.

show abstract

Correlation of Ultrastructure with Mechanical Properties of Nano‐Hybrid Dental Composites

et al. 2009

View full text Add to dashboard Cite

Determination of mechanical properties of nano‐hybrid dental composites leads to strong correlation to material's ultrastructure. Not only does total filler content in percentage of weight affect the mechanical properties, but the combination of optimal filler size and shape with homogeneous distribution of filler particles and an optimal amount of different sized fillers in finally cured dental composites lead to desired mechanical and thermo‐mechanical properties.

show abstract

The suitability of packable resin-based composites for posterior restorations

Cited by 50 publications

References 29 publications

Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites

Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites

Diametral tensile strength of composite resins submitted to different activation techniques

Correlation of Ultrastructure with Mechanical Properties of Nano‐Hybrid Dental Composites

Contact Info

Product

Resources

About