Mechanical retention versus bonding of amalgam and gallium alloy restorations

Eakle, W. Stephan; Staninec, Michal; Yip, Randolph L.; Chávez, Manuel

doi:10.1016/0022-3913(94)90552-5

Cited by 21 publications

(13 citation statements)

References 4 publications

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“…1990). Recent studies have recommended that it be used with a bonding agent to enhance its stability in severely compromised endodontically treated teeth (Eakle et al . 1994, Triolo et al .…”

Section: Introductionmentioning

confidence: 99%

Assessment of apical and coronal root canal seals using contemporary endodontic obturation and restorative materials and techniques

Davalou¹,

Gutmann

Nunn

1999

Int Endodontic J

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Section: Introductionmentioning

confidence: 99%

Assessment of apical and coronal root canal seals using contemporary endodontic obturation and restorative materials and techniques

Davalou¹,

Gutmann

Nunn

1999

Int Endodontic J

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“…After 24 hours all 30 specimens were subjected to manual thermal cycling of 100 cycles at 55+2 ºC and 4+2 ºC. (12,13)…”

Section: Group III and Group Vimentioning

confidence: 99%

“…After one week of storage in distilled water at room temperature, (12) the bond strength between composite and tooth structure was measured in shear mode by using universal compression machine (Electric Unconfined Compression Apparatus, Soit Test Co Inc, USA), at a cross head speed of 0.5mm/ min. (13) The mode of failure was tested by using visual examination and a magnifying lens for all specimens.…”

Section: Figure (4): Four Pins Seated In Placementioning

confidence: 99%

Shear bond strength of posterior comp-osite cores

Kamel¹,

Al–Mallah²,

Kharoufa³

2005

RDENTJ

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This study was designed to evaluate the shear bond strength (SBS) of posterior composite resin cores to tooth surface using two dental adhesives and two retentive means. Thirty extracted permanent molars were used for this purpose. They were made flat by removing the occlusal one third using "stone grinding wheal". Teeth were then randomly divided into six groups: Groups I and IV: Scotchbond Multipurpose Plus (SbMP) and All bond 2 dental adhesives were used for groups I and IV respectively to adhere composite to the flat tooth surface with no retentive mean as the control group. Groups II and V: A circumferential slot was prepared and composite attached to the tooth using SbMP and All bond 2 for groups II and V respectively. Groups III and VI: Four self threading pins were placed and composite adhered using SbMP and All bond 2 for groups III and VI respectively. After storage and thermal cycling, the SBS for each group was measured using "universal testing machine". The results varied according to the retentive mean and dental adhesive used. Groups with four pins produced the highest SBS and groups with no retentive mean showed the lowest SBS. Also the groups using All bond 2 adhesive generally had higher values when compared with the same groups using SbMP dental adhesive. Within the limits of this study, it is indicated that when the highest SBS is to be achieved, then All bond 2 dental adhesive with pins should be used.

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“…As características de manipulação das ligas de gálio lembram as do amálgama de prata por serem trituradas, condensadas, esculpidas e polidas de forma muito semelhante 10,16,25 . Em testes laboratoriais, a liga de gálio apresentou resistência à compressão e à tração diametral 1,5 , microinfiltração 7 e retenção mecânica em cavidades 6 semelhantes às do amálgama. Entretanto, o valor de "creep" 5 , o limite de fadiga 26 , e a resistência ao cisalhamento 21 foram maiores para as ligas de gálio.…”

Section: Introductionunclassified

Alteração dimensional de amálgama de prata e liga à base de gálio

Ballester

Markarian

Loguércio

2001

Pesqui. Odontol. Bras.

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Gallium-based dental alloys were created with the aim of solving the problem of toxicity of mercury. The material shows mechanical properties similar to those of dental amalgam, but researches point out two unfavorable characteristics: great corrosion and excessive post-setting expansion, and the latter is capable of cracking dental structures. The aim of this study was to evaluate, during 7 days, the in vitro dimensional alteration of a gallium dental alloy (Galloy, SDI, Australia), in comparison with a dental amalgam containing zinc (F400, SDI, Australia), as a function of the contact with saline solution (0.9% NaCl) during the setting period. The storage experimental conditions were: storage in dry environment, immersion in saline solution and contamination during condensation. Additionally, the effects of contamination during the trituration of dental amalgam and the effects of protecting the surface of the gallium alloy with a fluid resin were studied. Specimens were stored at 37 degrees C +/- 1 degree C, and measuring was carried out, sequentially, every 24 h during 7 days. When the gallium alloy was either contaminated or immersed, an expansion significantly greater than that observed in the other experimental conditions was noticed after 7 days. The application of a fluid resin to protect the surface of the cylinders was able to avoid the increase in expansion caused by superficial moisture. The amalgam alloy did not show significant dimensional alterations, except when it was contaminated during trituration.

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Mechanical retention versus bonding of amalgam and gallium alloy restorations

Cited by 21 publications

References 4 publications

Assessment of apical and coronal root canal seals using contemporary endodontic obturation and restorative materials and techniques

Assessment of apical and coronal root canal seals using contemporary endodontic obturation and restorative materials and techniques

Shear bond strength of posterior comp-osite cores

Alteração dimensional de amálgama de prata e liga à base de gálio

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