Strength parameters of composite resins

Reisbick, M.H.; Brodsky, Jae

doi:10.1016/0022-3913(71)90050-3

Cited by 38 publications

(11 citation statements)

References 6 publications

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“…For example, the repair strengths reported by others range from 20 to 53%, Forsten and Valiaho (1971); 28 to 32%, Reisbick and Brodsky (1971); 22 to 60%, Lloyd et al (1980); and 25 to 64%, Vankerckhoven et al (1 982). …”

Section: Discussionmentioning

confidence: 90%

“…It has generally been found that interfacial bonding to aged composites is significantly lower than the cohesive strength of the materials. Reported bond strengths vary widely among investigators, from ¼h to 34 of the cohesive strength, depending on the specific materials and experimental conditions (Forsten and Vahaho, 1971;Reisbick and Brodsky, 1971;Boyer et al, 1978;Lloyd et al, 1980;Vankerckhoven et al, 1982;Chan and Boyer, 1983). Some investigators have reported that interfacial bond strength to fresh composite, from seven to ten min old, was no different from the cohesive strength (Boyer et al, 1978;Lloyd et al, 1980;Marshall et al, 1982).…”

Section: Introductionmentioning

confidence: 99%

“…Some investigators have reported that interfacial bond strength to fresh composite, from seven to ten min old, was no different from the cohesive strength (Boyer et al, 1978;Lloyd et al, 1980;Marshall et al, 1982). One study reported significantly lower strength of bonding to fresh material (Reisbick and Brodsky, 1971).…”

Section: Introductionmentioning

confidence: 99%

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Build-up and Repair of Light-cured Composites: Bond Strength

1984

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Interfacial bond strengths of light-activated composites were measured as a function of age using a transverse strength test. Bond strength between layers decreased with the age of the initial layer and reflected the setting curves of the composites. The highly-filled composites exhibited the greatest bond strengths. Uncut surfaces provided a better substrate for bonding than did ground surfaces. Use of a bonding agent on both uncut and ground surfaces improved bond strengths. Mean repair strengths of light-activated composites were similar to those of self-curing composites. Composites with ground surfaces aged for one wk had mean repair strengths 27% of the cohesive strength without bonding agent and 48% with bonding agent.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Build-up and Repair of Light-cured Composites: Bond Strength

1984

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“…[1][2][3][4][5][6][7] The authors decided to continue the examination of this topic because of: (1) the wider range of materials now available; (2) changes in formulation and structure of composites; (3) modification in specimen preparation and testing procedures used in the investigations; and (4) the apparent disagreement between results given by previous authors. Such factors make quantitative comparisons between the various investigations difficult.…”

mentioning

confidence: 99%

Unreacted Methacrylate Groups on the Surfaces of Composite Resins

et al. 1982

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The unreacted methacrylate groups on the surface of conventional composites and microfilled composites were studied by means of multiple internal reflection infrared spectroscopy. The influences of polymerization time, temperature, and the effect of polishing were studied. We also attempted to relate the results of some mechanical tests to the degree of chemical unsaturation measured in the different resins. All surface treatment and manipulative variables caused a decrease in double bond content and interfacial bond strength.

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“…The age of the composite to which the sealant is applied could vary from hours to weeks, depending upon the interval between bracket attachment to the stone cast and its placement on the patient's teeth. Investigations (Reisbick and Brodsky, 1971;Boyer and Torney, 1978;Lloyd et al, 1980;Boyer, 1984) of the repair of composites have shown that bond strengths can be significantly reduced when interfaces involve an aged composite.…”

mentioning

confidence: 99%

Analysis of the "Shear" Bond Strength of Pretreated Aged Composites Used in Some Indirect Bonding Techniques

Shiau¹,

Rasmussen

Phelps

et al. 1993

J Dent Res

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Investigations of the repair of composites have shown that bond strengths can be significantly reduced at an interface involving an aged composite. Brackets placed by some indirect bonding techniques also have an interface involving an aged composite. This study investigated some of the properties of sealant-composite interfaces and parameters affecting these properties independent of other regions and interfaces found in the total enamel-sealant-composite-bracket system using a shear bond-strength test and fractographic analysis. The effects of various pretreatments of 7-day-old composite surfaces on the bond strength and contact angle of a mixed sealant on these pretreated surfaces were determined. Fractured specimens with adhesive failure closest to the point of force application had low bond strengths (17.62 MPa), which could be correlated with surface pretreatment. Preliminary tests showed that acetone pretreatment produced the most consistently strong interfaces with the fewest adhesive failures of this type. Specimens with adhesive failure only in other regions had higher bond strengths (23.41 MPa), which showed no dependence on pretreatment. There was no statistical relationship between contact angle and bond strength. The data coupled with fracture path analysis suggest that: first, the critical region for fracture analysis is that part of the adhesive interface which is closest to the point of force application; second, failure during some dental shear bond strength tests probably occurs as a consequence of tensile stress induced by a bending moment rather than by shear stress; and third, specifying bond strength as breaking load/area may be incorrect.

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Strength parameters of composite resins

Cited by 38 publications

References 6 publications

Build-up and Repair of Light-cured Composites: Bond Strength

Build-up and Repair of Light-cured Composites: Bond Strength

Unreacted Methacrylate Groups on the Surfaces of Composite Resins

Analysis of the "Shear" Bond Strength of Pretreated Aged Composites Used in Some Indirect Bonding Techniques

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