A fluid filtration and clearing technique to assess microleakage associated with three dentine bonding systems

Youngson, C. C.; Jones, John C.; Fox, Kathryn; Smith, Ian; Wood, David; Gale, Martin

doi:10.1016/s0300-5712(98)00048-7

Cited by 36 publications

(41 citation statements)

References 24 publications

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“…However, this nanoleakage or nanometer sized spaces within the hybrid layer may result from incomplete resin infiltration into the deminerialized dentin leaving the collagen unenveloped by resin ,or it may result from poor polymerization of the adhesive resin and the existence of low molecular weight oligomers (44) . This nanoleakage pathway may allow fluid penetration along the interface which may result in hydrolytic breakdown of either the adhesive resin or collagen within the hybrid layer, there compromising stability of the resin-dentin bond (45) . Another explanation for drop the shear bond strength values of One-up Bond F plus, without surface treatment after 3 months as result from hydrolytic degradation of the resin and collagen fibers in the submicron spaces of the hybrid layer increase with increase exposure to water (46) .…”

Section: D) Effect Of Storage Time On the Shear Bond Strengthmentioning

confidence: 99%

In Vitro Study Compared The Shear Bond Strength of HEMA-free and HEMA-containing Bonding Agents To Different Dentin Surface Treatments

Mohammed

Al-Kady³

2017

ADJ-for Girls

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This research was designed to investigate the effect of two dentin surface treatments on the shear bond strength of HEMA-free and HEMA containing bonding agent. A total of 90 freshly extracted, sound human molars, free from caries, extracted for pathological reasons was used in this study. The molars were randomly divided into two main equal groups (45 teeth each) according to the type of adhesive system; Group (A1) used HEMA-free adhesive (G-bond). Group (A2) used HEMA containing adhesive (One-up Bond F Plus). Each group was further subdivided into 3 equal subgroups (15teeth each) according to the type of dentin surface treatments applied as follows: Subgroup (I) used the bonding agent only without surface treatment as a control [AB], Subgroup (II) used 10% Sodium hypochlorite followed by the bonding agent [AB1], Subgroup (III) used 10% Sodium hypochlorite then 10% Sodium ascorbate followed by the bonding agent [AB2]. Each subgroup was further divided into three groups of (5 teeth each) according to the storage times; 24 hours, three months, and six months. A Flat dentin surface was prepared, different surface treatments and adhesive systems were applied then Composite was bonded to the treated surfaces according to the manufacturer's instructions and the shear bond strength testing was done using universal testing machine. The recorded values were tabulated and statistically analysed. The result of this study revealed that; the highest mean shear bond strength (18.39 +/-2 MPa) was recorded for those dentin specimens bonded to composite resin with HEMA-containing adhesive (One-up Bond F Plus) without surface treatment after 1 day storage time. While the lowest mean shear bond strength (10.7 +/-1.6 MPa) was recorded for those dentin specimens bonded to composite resin with HEMA-free adhesive (G-bond) with sodium hypochlorite only after 6 months storage time. The results of this study revealed that 1-Sodium hypochlorite only has a significant adverse effect on the shear bond strength of both adhesives. 2-sodium hypochlorite followed by sodium ascorbate can render the adverse effect of sodium hypochlorite only on the shear bond strength of both adhesives.3-HEMA-containing adhesive (One-up Bond F Plus) without surface treatment showed better shear bond strength than HEMA-free adhesive (G-bond). 4-Storage in water for long periods has a highly significant adverse effect on the bond strength especially of HEMA-containing adhesive.

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Section: D) Effect Of Storage Time On the Shear Bond Strengthmentioning

confidence: 99%

In Vitro Study Compared The Shear Bond Strength of HEMA-free and HEMA-containing Bonding Agents To Different Dentin Surface Treatments

Mohammed

Al-Kady³

2017

ADJ-for Girls

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“…A 68% increase in hydraulic conductance was reported after application of a self-etching acid, followed by a return to baseline conductance levels after composite placement. 17 The above explains why the hybrid layer was always 100% infiltrated by pulp fluid when etch & rinse adhesive was applied (Figures 2-5). In contrast, self-etching adhesive was not always infiltrated, because tubule sealing was achieved in some cases ( Figure 6).…”

Section: Discussionmentioning

confidence: 90%

“…16 Phosphoric acid removes the peritubular dentin and fully opens the dentin tubules. Phosphoric etching was reported to produce an increase of 200-300% in hydraulic conductance, 17 and ground dentin showed a fluid flow rate of 0.1 µl/minute compared to 0.9 µl/minute for phosphoric etched dentin. 18 The adhesive must stop the flow of fluid and seal the entire exposed surface.…”

Section: Discussionmentioning

confidence: 99%

“…However, etch & rinse adhesives have been reported to maintain a percentage of increased hydraulic conductance after composite placement. 17 In contrast, when self-etching adhesive is applied, the dentin surface is smear layer sealed, reducing dentin permeability, 18 and there is a lesser tubule opening 16 and a reduced fluid flow. A 68% increase in hydraulic conductance was reported after application of a self-etching acid, followed by a return to baseline conductance levels after composite placement.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Pulp Pressure on the Micropermeability and Sealing Ability of Etch & Rinse and Self-etching Adhesives

Rosales-Leal¹,

Torre-Moreno²,

Bravo³

2007

Operative Dentistry

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This research evaluated the effect of pulp pressure on the micropermeability and sealing ability of etch & rinse and self-etching adhesives. Two etch & rinse adhesives (Prime&Bond NT and Admira Bond) and one self-etching adhesive (Xeno III) were used. Adhesive layer micropermeability was evaluated by using confocal laser scanning microscopy (CLSM). Eighteen molars were connected to a pulp pressure device and divided into two groups. One group was restored with pulp pressure and the other group without. Each group was divided into three subgroups according to the adhesive used. The adhesives were rhodamine-labeled and Class V cavities were restored. After restoration, all specimens were kept under pulp pressure conditions for 24 hours with fluorescein-labeled pulp fluid. The specimens were sectioned and the axial wall was observed under CLSM. A microleakage test was performed to evaluate the sealing. Thirty molars were divided into two groups. One group was prepared with a pulp pressure device and the other group without. Each group was divided into three subgroups as a function of the adhesive used. Class V cavities were restored and the specimens were immersed in fuchsin and sectioned. Microleakage and dentin penetration were recorded in the occlusal and gingival walls. A CLSM study showed that the etch & rinse adhesives had higher micropermeability compared to the self-etching adhesives and pulp pressure made all the adhesives more permeable. In the occlusal wall, the best sealing (hermetic) was Effect of Pulp Pressure on the Micropermeability and Sealing Ability of Etch & Rinse and Self-etching Adhesives JI Rosales-Leal • FJ de la Torre-Moreno • M Bravo Clinical RelevanceEtch & rinse adhesives are much more micropermeable and affected by pulp fluid compared with self-etching adhesives. Pulp pressure reduces dentin sealing with etch & rinse adhesives but not with self-etching adhesives. Pulp pressure has no effect on enamel sealing, which is lower when self-etching adhesive is used.

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“…, 미생물침투 법 2) , 자가방사법 3) , 주사전자현미경을 이용한 변연적합도 분 석법 4) , 유체이동 측정법 5) , 전기화학적 분석법 6) 등이 이용되 고 있다. 최근에는 3차원적 정량 분석법으로 3차원 재구성 법 7,8) , 미세단층 촬영법 …”

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Estimation of relation between techniques of dye penetration for microleakage and SEM evaluation for marginal adaptation of the restoration

Hwang

Shin

2006

J Korean Acad Conserv Dent

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The purpose of this study was to estimate the relation between techniques used for microleakage from dye penetration and for marginal adaptation from SEM evaluation of the restoration.Using high speed #330 bur, class V cavities (4 × 3 × 1.5 ㎜ around CEJ) were prepared on the buccal surface of 20 extracted human molars. Six dimples as reference points for SEM and dye penetration evaluation were made with 1/2 round bur. Cavity was bulk filled with microhybrid composite resin (Esthet X) and all-in-one adhesive (Xeno III). Teeth were stored in saline solution for one day, after then, they were finished and polished using Sof-Lex system.Fifty percent silver nitrate dye solution was used for the evaluation of microleakage and resin replica was used for marginal adaptation. All of these were done after 1000 times thermocycling between 5 and 55℃.Vertical sections were made through three dimples of restoration to obtain samples for the evaluation of dye penetration and inner marginal adaptation. Outer adaptational estimation was done with an intact restoration before sectioning. Dye penetration was determined in three degrees and percentage of outer and inner leaky margin was estimated from SEM image.The data were analysed statistically: Spearman' s rho test were used to check relationships between two methods.The result were as follows: 1. There were significant relationships between degree of dye penetration and inner and outer marginal adaptations each (p < 0.01). 2. However, there was no significant relationship between the results of inner and outer marginal adaptation. Within the results of this study, relationship between the percentage of marginal adaptation and microleakage shows significant relationship. However, inner and outer marginal adaptation did not show any significant relationship mutually. [J Kor Acad Cons Dent 31(5): [337][338][339][340][341][342][343] 2006]

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A fluid filtration and clearing technique to assess microleakage associated with three dentine bonding systems

Cited by 36 publications

References 24 publications

In Vitro Study Compared The Shear Bond Strength of HEMA-free and HEMA-containing Bonding Agents To Different Dentin Surface Treatments

In Vitro Study Compared The Shear Bond Strength of HEMA-free and HEMA-containing Bonding Agents To Different Dentin Surface Treatments

Effect of Pulp Pressure on the Micropermeability and Sealing Ability of Etch & Rinse and Self-etching Adhesives

Estimation of relation between techniques of dye penetration for microleakage and SEM evaluation for marginal adaptation of the restoration

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