The effect of light-curing modes on the microleakage of cervical resin composite restorations

Kubo, Shin‐ichi; Yokota, Hiroaki; Yokota, Haruka; Hayashi, Yoshihiko

doi:10.1016/j.jdent.2003.11.005

Cited by 67 publications

(86 citation statements)

References 36 publications

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“…In our study [25], no significant differences in the microleakage scores were found among the light-curing modes used (standard, two-step, ramping and PAC modes), as shown in Table 8. In addition, relatively good marginal integrity was obtained, regardless of the light-curing mode used.…”

Section: The Effect Of Light Curing Modesmentioning

confidence: 47%

“…Dentin bond strengths are remarkably enhanced by these adhesives and are similar to enamel bond strength [11,13]. Contrary to our expectation, we were unable to demonstrate an improvement of dentin marginal sealing as a result of dentin bond strength enhancement in the studies, as shown in Tables1-3 and 10 [11,14,18]. In the case of self-etch adhesives, marginal sealing at enamel margins was degraded by thermocycling and flexural load cycling, regardless of the cavity form.…”

Section: Enhancement Of Bond Strength To Dentinmentioning

confidence: 60%

“…Our previous studies revealed that the marginal integrity at enamel margins treated with maleic acid or self-etch primer was degraded by thermocycle or flexural load cycling [14,20]. An enamel bevel significantly improved the marginal sealing at enamel margins, as shown in Table 7 [17,22].…”

Section: The Effect Of An Enamel Bevelmentioning

confidence: 99%

“…The enamel bevel reduces the thickness of the resin composite and changes the cavosurface angle. This may lead to a reduction of stresses generated by polymerization contraction, thermal load cycling and flexural load cycling [17,22,76].…”

Section: The Effect Of An Enamel Bevelmentioning

confidence: 99%

“…For the benefit of public oral health, the clinical longevity of restorations for NCCLs requires an urgent improvement. In order to get more insight into this clinical problem, we first performed a series of laboratory studies on clinical placement techniques of cervical resin composite restorations by means of microleakage tests [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] and then we have been conducting clinical trials [27][28][29][30][31][32]. The aim of this article is to discuss the challenges we faced in the clinical placement and evaluation of cervical resin composite restorations as they relate to clinical studies, especially recently published, long-term clinical trials [33][34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

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Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Kubo

Yokota

et al. 2013

Dental Materials

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Objectives: The incidence of non-carious cervical lesions (NCCLs) has been increasing.The clinical performance of resin composites in NCCLS was previously unsatisfactory due to their non-retentive forms and margins lying on dentin. In order to address this problem, a lot of effort has been put into developing new dentin adhesives and restorative techniques. This article discusses these challenges and the criteria used for evaluating clinical performance as they relate to clinical studies, especially long-term clinical trials. Polymerization contraction, thermal changes and occlusal forces generate debonding stresses at adhesive interfaces.Methods: In laboratory studies, we have investigated how these stresses can be relieved by various restorative techniques and how bond strength and durability can be enhanced. Lesion forms, restorative techniques, adhesives (adhesive strategies, bond strengths, bond durability, and the relationship between enamel and dentin bond strengths) were found to have a complex relationship with microleakage. With regard to some restorative techniques, only several short-term clinical studies were available.

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Section: The Effect Of Light Curing Modesmentioning

confidence: 47%

Section: Enhancement Of Bond Strength To Dentinmentioning

confidence: 60%

Section: The Effect Of An Enamel Bevelmentioning

confidence: 99%

Section: The Effect Of An Enamel Bevelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Kubo

Yokota

et al. 2013

Dental Materials

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In vitro comparison of the physical and mechanical properties of an ormocer with an ormocer‐based composite and a nanocomposite restorative material

Jansen van Rensburg,

Kritzinger,

Arnold

et al. 2023

Clinical & Exp Dental Res

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ObjectivesTo compare an ormocer with a first generation ormocer‐based composite and a nanocomposite in terms of surface roughness, surface hardness, and microleakage.Materials and MethodsAn ormocer (Admira Fusion), a first generation ormocer‐based composite (Admira) and a nanocomposite (Filtek Z350 XT) were prepared strictly in accordance with the manufacturer's instruction and recommendation to provide optimal material properties. Twelve disk samples of each material were evaluated to assess both surface roughness and surface hardness. For surface roughness, all samples were finished, polished, and Ra values measured with a profilometer. For surface hardness, samples were stored in an incubator, polished and a Vickers diamond indenter was used to record values. For microleakage, 36 standardized, Class V cavities were prepared and randomly divided into three groups. Restored teeth were thermally fatigued, immersed in 2% methylene blue solution for 48 h, sectioned, and scored for occlusal and gingival microleakage.ResultsStatistical significance was set at p < .05. The one‐way analysis of variance identified no significant difference in terms of surface roughness between the three material groups (p > .05). A significantly higher surface hardness was identified for the nanocomposite compared to both the ormocer (p < .001) and ormocer‐based composite (p < .001). Fisher's exact test identified no significant difference in terms of occlusal microleakage (p = .534) and gingival microleakage (p = .093) between the three material groups.ConclusionsNo significant differences in terms of surface roughness or microleakage were noted. The nanocomposite was significantly harder than the ormocer materials.

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Effect of load cycling and in vitro degradation on resin‐dentin bonds using a self‐etching primer

Osorio

Toledano

Osorio

et al. 2005

J Biomedical Materials Res

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The objective of this study was to evaluate the effect of in vitro degradation and mechanical loading on microtensile bond strength (MTBS) and microleakage (ML) of a resin composite to dentin using a self-etching primer adhesive [Clearfil SE Bond (SEB)] under two hydration statuses. Twenty-four flat dentin surfaces were divided in groups: 1) blot-dried, 2) air-dried. SEB was applied and resin buildups were performed with Tetric Ceram. Specimens were divided in four subgroups: a) sectioned into beams, b) load cycled, c) beams were immersed in NaOCl for 5 h, d) load cycled and immersed in NaOCl. Beams were tested in tension. For ML testing, 80 Class V cavities were prepared and molars divided in subgroups as described above (in group c and d, specimens were kept in distilled water for 1 year, instead of the 5-h NaOCl immersion). ML was assessed by dye penetration. Analysis of variance and multiple comparisons tests were used for MTBS. For ML, Mann-Whitney U and Wilcoxon matched pairs signed ranked were used (p<0.05). SEB applied to completely dehydrated dentin produced the highest MTBS, at 24-h evaluation. In vitro degradation always decreased MTBS, and fatigue loading only diminished MTBS on dehydrated dentin. Load cycling increased dye penetration on dentin margins. Degradation always increased ML in both enamel and dentin margins.

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The effect of light-curing modes on the microleakage of cervical resin composite restorations

Cited by 67 publications

References 36 publications

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

Challenges to the clinical placement and evaluation of adhesively-bonded, cervical composite restorations

In vitro comparison of the physical and mechanical properties of an ormocer with an ormocer‐based composite and a nanocomposite restorative material

Effect of load cycling and in vitro degradation on resin‐dentin bonds using a self‐etching primer

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