Quality and durability of marginal adaptation in bonded composite restorations

Lutz, F; Krejci, Ivo; Barbakow, F

doi:10.1016/0109-5641(91)90055-4

Cited by 175 publications

(120 citation statements)

References 12 publications

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“…The advantage of this method is a reproducible standardized stress for all specimens. In addition, intrapulpal pressure was used to simulate physiological conditions [43]. Therefore, it could be assumed that the results of this study might have a certain clinical relevance.…”

Section: Discussionmentioning

confidence: 99%

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Marginal adaptation of ceramic and composite inlays in minimally invasive mod cavities

et al. 2013

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OBJECTIVES: This study aims to evaluate the effect of a minimally invasive mesial-occlusaldistal (mod) preparation on the marginal adaptation of ceramic and composite inlays with the aim of saving sound dental substance. MATERIALS AND METHODS: Class II mod cavities were prepared in 50 extracted human molars and randomly allocated to five groups (n = 10). In all groups, the mesialproximal box margins were located in the dentin, 1 mm below the cementoenamel junction (CEJ), while the distal box margins were 1 mm above the CEJ. In groups A and B, conventional standard preparations with a divergent angle of = 6°were prepared. In groups C, D, and E, minimally invasive standard preparations with a convergent angle of = 10°were prepared. In groups A and D, composite inlays and, in groups B and C, ceramic inlays were fabricated (chairside economical restoration of esthetic ceramics (CEREC)) and adhesively inserted. In group E, a direct composite filling using the incremental technique was placed. Replicas were taken before and after thermomechanical loading (1,200,000 cycles, 50/5°C, max. load 49 N). Marginal integrity (tooth-luting composite, luting composite-inlay) was evaluated by scanning electron microscopy (×200). The percentage of continuous margins in the different locations was compared between and within groups before and after cycling, using ANOVA and Scheffé post hoc test. RESULTS: After the thermomechanical loading, no significant differences were observed between the different groups with respect to the interface of luting composite-inlay. At the interface of toothluting composite for preparations involving the dentin, groups A and B behaved significantly better compared to the control group E, which in turn were not different to groups C and D. CONCLUSION: Composite and ceramic inlays inserted in minimally invasive prepared mod cavities result in margins not different from those of inlays placed in conventional mod preparations. Direct composite filling margins, however, were inferior to those attained by conventional indirect restorations. CLINICAL RELEVANCE: Minimally invasive preparations for mod inlays with undercuts show marginal adaptation equal to that of conventional inlay preparation design. Keywords: Composite inlay, ceramic inlay; minimally-invasive; marginal adaption Declaration of interests:The authors declare they have no conflicts of interest. AbstractObjectives To evaluate the effect of a minimally-invasive mod-preparation on the marginal adaptation of ceramic and composite inlays with the aim of saving sound dental substance. Materials and MethodsClass II mod-cavities were prepared in 50 extracted human molars and randomly allocated to five groups (n=10). In all groups, the mesial-proximal-box-margins were located in dentin, 1 mm below the cementoenamel junction (CEJ), while the distal-boxmargins were 1 mm above the CEJ. In group A and B, conventional standard preparations with a divergent angle of α = 6° were prepared. In Group C, D and E minimally invasive standard preparation...

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Section: Discussionmentioning

confidence: 99%

“…To minimize the adverse effects of polymerization shrinkage, an incremental placement technique was performed [43,63].…”

Section: Discussionmentioning

confidence: 99%

Marginal adaptation of ceramic and composite inlays in minimally invasive mod cavities

et al. 2013

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“…Both thermo-mechanical loading and intrapulpal pressure were used in an attempt to simulate the oral environment [31]. Stressing the restorations up to 1.2 million cycles in vitro may simulate approximately 5 years of clinical use [22].…”

Section: Discussionmentioning

confidence: 99%

Proximal direct composite restorations and chairside CAD/CAM inlays: Marginal adaptation of a two-step self-etch adhesive with and without selective enamel conditioning

2006

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The aim of this study was to evaluate the marginal adaptation of CEREC ceramic inlays, CEREC composite inlays and direct composite restorations in unbeveled proximal slot cavities under artificial aging conditions. Two groups of each restoration type were prepared (n=6), one group with a self-etch adhesive, the other group with H 3 PO 4 enamel etching before the self-etch adhesive application. Replicas were generated before and after long-term thermo-mechanical loading under dentinal fluid simulation and margins were evaluated at ×200 magnification in the scanning electron miscroscope (SEM). Statistically, significant differences were found before and after loading with respect to the percentages of "continuous margins", the direct composite filling with H 3 PO 4 enamel etching giving the lowest percentages of "continuous margins" after loading (p<0.05). The highest percentage of "continuous margin" was attained by composite inlays without H 3 PO 4 enamel etching. However, these results were not significantly different from ceramic inlays after stressing. Polymerization shrinkage is still one critical property of composite restorative materials. The marginal adaptation of indirect adhesive proximal slot restorations without enamel bevels both fabricated out of composite and ceramic is better than that of directly placed composite restorations.

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“…NCG teeth received a 0.5 mm enamel bevel and were filled with resin-based composite using an incremental filling technique [29]. Subsequently, the interfaces between inlay and the cavity margins were finished with 15 µm diamond burs …”

Section: Preparation Of Specimensmentioning

confidence: 99%

“…Conventional resin cement systems and self-etch resin cements represent the current standard of adhesively seating inlays and are expected to durably restore the stability of the restoration-tooth system [24][25][26]. Testing marginal adaptation of class II-restorations seated in natural extracted molars with a chewing fatigue test is considered to provide useful information on the integrity of the type of restoration [16,[27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Marginal adaptation, fracture load and macroscopic failure mode of adhesively luted PMMA-based CAD/CAM inlays

et al. 2016

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OBJECTIVES To evaluate marginal adaptation, fracture load and failure types of CAD/CAM polymeric inlays. METHODS Standardized prepared human molars (48) were divided into four groups (n=12): (A) PCG (positive control group); adhesively luted glass-ceramic inlays, (B) TRX; CAD/CAM polymeric inlays luted using a self-adhesive resin cement, (C) TAC; CAD/CAM polymeric inlays luted using a conventional resin cement, and (D) NCG (negative control group); direct-filled resin-based composite restorations. All specimens were subjected to a chewing simulator. Before and after chewing fatigue, marginal adaptation was assessed at two interfaces: (1) between dental hard tissues and luting cement and (2) between luting cement and restoration. Thereafter, the specimens were loaded and the fracture loads, as well as the failure types, were determined. The data were analysed using three-and one-way ANOVA with post hoc Scheffé test, two sample Student's t-test (p<0.05). RESULTS Before and after chewing fatigue, marginal adaptation for interface 1 showed significantly better results for TRX and PCG than for TAC (p=0.001-0.02) and NCG (p=0.001-0.047). For interface 2, marginal adaptation for TAC was significantly inferior to TRX (p<0.001) and PCG (p<0.001). Chewing fatigue had a negative impact on the marginal adaptation of TAC and NCG. No significant differences in fracture load were found between all tested groups. SIGNIFICANCE Self-adhesive luted polymeric CAD/CAM inlays showed similar marginal adaptation and fracture load values compared to adhesively luted glass-ceramic inlays. CAD/CAM polymeric inlays luted using a self-adhesive resin cement, C) TAC; CAD/CAM polymeric inlays luted using a conventional resin cement, and D) NCG (negative control group); direct-filled resin-based composite restorations. All specimens were subjected to a chewing simulator. Before and after chewing fatigue, marginal adaptation was assessed at two interfaces: 1) between dental hard tissues and luting cement and 2) between luting cement and restoration. Thereafter, the specimens were loaded and the fracture loads, as well as the failure types, were determined. The data were analysed using three-and one-way ANOVA with post-hoc Scheffé test, two sample Student's t-test and Weibull statistics (p < 0.05).Results: Before and after chewing fatigue, marginal adaptation for interface 1 showed significantly better results for TRX and PCG than for TAC (p = 0.001 -0.02) and NCG (p = 0.001 -0.047). For interface 2, marginal adaptation for TAC was significantly inferior to TRX (p < 0.001) and PCG (p < 0.001). Chewing fatigue had a negative impact on the marginal adaptation of TAC and NCG. No significant differences in fracture load were found between all tested groups. Group TAC showed the highest Weibull moduli (m = 4.49) and group PCG the lowest (m = 2.78).Significance: Self-adhesive luted polymeric CAD/CAM inlays showed similar marginal adaptation and fracture load values compared to adhesively luted glass-ceramic inlays.3

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Quality and durability of marginal adaptation in bonded composite restorations

Cited by 175 publications

References 12 publications

Marginal adaptation of ceramic and composite inlays in minimally invasive mod cavities

Marginal adaptation of ceramic and composite inlays in minimally invasive mod cavities

Proximal direct composite restorations and chairside CAD/CAM inlays: Marginal adaptation of a two-step self-etch adhesive with and without selective enamel conditioning

Marginal adaptation, fracture load and macroscopic failure mode of adhesively luted PMMA-based CAD/CAM inlays

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