The effect of amine-free initiator system and polymerization type on long-term color stability of resin cements: an in-vitro study

Kavut, İdris; Uğur, Mehmet

doi:10.1186/s12903-022-02456-z

Cited by 6 publications

(5 citation statements)

References 35 publications

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“…This change may be mainly attributed to the oxidation of the tertiary amines present in the dual-cured resin types of cement. To overcome this problem, some researchers and clinical practitioners have used light-cured resin composites instead of dual-cure resin cement to overcome this problem [2,30,31]. However, this is not present in Multilink N because the product is claimed to have sufficient bond strength and aesthetics in cementation.…”

Section: Discussionmentioning

confidence: 99%

Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics

Chen

Lin

et al. 2023

J Prosthodont Res

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Lithium disilicate, a reinforced pressable glass ceramic, is a popular option for large-defect restoration owing to its esthetic feature and promising strength [1,2]. Ceramic cementation is a critical issue for achieving restoration longevity [3]. Features such as the degree of conversion, mechanical properties, bond strength, working time, shade stability, restorative thickness, and retention form design are criteria for cement selection consideration [4][5][6][7]. A higher degree of conversion (DC) ensures lower solubility of cement and results in restoration with less marginal discrepancy [8]. Dual-cured resin ce-ment is thought to be the first choice for ceramic restoration to avoid insufficient polymerization of the resin cement because of its chemical polymerization constituent [9], which allows more time to remove excess cement before hardening. Recently, more practitioners and studies have used purely light-cured resin composites as luting cement to achieve stronger mechanical properties, higher micro-tensile bond strength, longer working time, easier handling for excess control, higher shade stability, and greater marginal integrity [9][10][11][12]. Some scholars have even used preheated light-cured packable composite restorative materials, mainly to reduce the film thickness and increase the flowability to act as a luting cement [13][14][15]. However, most of these studies have used light-cured conventional resin composites. Light transmittance through the restoration may cause insufficient polymerization, leading to unpredictable outcomes. The light transmission rate is affected by the thickness, translucency, and color of the restoration. When the light transmittance decreases, less light intensity reaches the cement layer, possibly causing an uncured J Prosthodont Res. 2023; **(**):

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Section: Discussionmentioning

confidence: 99%

Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics

Chen

Lin

et al. 2023

J Prosthodont Res

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“…The causes of color failures are summarized in Table 3 [16,17,30,41,[44][45][46][47][48][49][50][51]. Color changes can be caused by the veneer thickness, material type, substrate color, and ceramic color [16,17,41].…”

Section: Color Failuresmentioning

confidence: 99%

“…No verification of the veneer color occurred before cementation by using try-paste [49]. Use of dual-cure resin cement for thin veneers (≤1 mm), with HT *, LT *, and MT * glass-ceramics [41,50] Microleakage presented as a dark line at the gingival margin Lack of bonding agent; use of a scaler to remove resin cement; subgingival margin at the dentin or root surface is more likely to be prone to leakage, poor isolation, and tissue management (proper subgingival margin isolation before and during bonding is vital to prevent interference from the sulcular fluids with the bonding surfaces, which causes yellowish discoloration. ); use of thick adhesive layer; and lack of margin fit [51].…”

Section: Improper Cementation Techniquementioning

confidence: 99%

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Clinical Survival Rate and Laboratory Failure of Dental Veneers: A Narrative Literature Review

Alghazzawi

2024

JFB

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There is a vast amount of published literature concerning dental veneers; however, the effects of tooth preparation, aging, veneer type, and resin cement type on the failure of dental veneers in laboratory versus clinical scenarios are not clear. The purpose of the present narrative review was to determine the principal factors associated with failures of dental veneers in laboratory tests and to understand how these factors translate into clinical successes/failures. Articles were identified and screened by the lead author in January 2024 using the keywords ‘‘dental veneer”, “complication”, “survival rate”, “failure”, and “success rate” using PubMed/Medline, Scopus, Google Scholar, and Science Direct. The inclusion criteria included articles published between January 1999 and December 2023 on the topics of preparation of a tooth, aging processes of the resin cement and veneer, translucency, thickness, fabrication technique of the veneer; shade, and thickness of the resin cement. The exclusion criteria included articles that discussed marginal and internal fit, microhardness, water sorption, solubility, polishability, occlusal veneers, retention, surface treatments, and wear. The results of the present review indicated that dental veneers generally have a high survival rate (>90% for more than 10 years). The amount of preserved enamel layer plays a paramount role in the survival and success rates of veneers, and glass-ceramic veneers with minimal/no preparation showed the highest survival rates. Fracture was the primary failure mechanism associated with decreased survival rate, followed by debonding and color change. Fractures increased in the presence of parafunctional activities. Fewer endodontic complications were associated with veneer restorations. No difference was observed between the maxillary and mandibular teeth. Clinical significance: Fractures can be reduced by evaluation of occlusion immediately after cementation and through the use of high-strength veneer materials, resin cements with low moduli, and thin layers of highly polished veneers. Debonding failures can be reduced with minimal/no preparation, and immediate dentin sealing should be considered when dentin is exposed. Debonding can also be reduced by preventing contamination from blood, saliva, handpiece oil, or fluoride-containing polishing paste; through proper surface treatment (20 s of hydrofluoric acid etching for glass ceramic followed by silane for 60 s); and through use of light-cured polymerization for thin veneers. Long-term color stability may be maintained using resin cements with UDMA-based resin, glass ceramic materials, and light-cure polymerization with thin veneers.

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“…Thermocycling is a widely used, controlled and reliable method that simulates intra-oral thermal changes. 15 It was suggested that 10,000 thermocycles corresponded to one clinical service year, 16 hence; a minimum of 5,000 cycles is recommended. 17 For color assessment, instrumental techniques, such as laboratory spectrophotometer, provide highly accurate, objective and reproducible quantitative results.…”

Section: Introductionmentioning

confidence: 99%

Effect of resin cement type on the final color of high translucent zirconia before and after thermocycling: an in vitro study.

Alnaggar,

Hassanin,

Ezzat

2024

Advanced Dental Journal

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Aim: Advancements in dental cements were made to enhance bonding to zirconia. However, their effect on the color stability of the restoration is still unclear. The purpose of this study was to compare the effect of amine-free MDP-containing dual-cured self-adhesive resin cement versus light-cured resin cement on the final color of monolithic high translucent zirconia before and after thermocycling. Subjects and methods: Twenty high translucent zirconia discs, shade A2 (0.5 mm thickness, 10 mm diameter) were obtained, air abraded and randomly divided in two groups (n=10) according to the cement type used; Group CH: cemented by choice 2 (light-cured resin cement; control), Group ZC: cemented by ZR-Cem (amine-free MDP-containing dual-cured self-adhesive resin cement; intervention). Specimens were cemented to PMMA discs and subjected to thermocycling. Color was assessed after cementation and after thermocycling using laboratory spectrophotometer. After testing for normality, collected data revealed parametric distribution and were expressed as mean and standard deviation. Data were statistically analyzed at a level of significance (P ≤ 0.05). Results: After cementation, color change was significantly lower in Group ZC (ΔE= 2) than in Group CH (ΔE= 3.8). However, after thermocycling, it was significantly higher in Group ZC (ΔE= 3.63) than Group CH (ΔE= 2.47), being within the clinically accepted range. Conclusion: Resin cement type and aging affect the final color of thin high translucent zirconia restorations. Light-cured resin cement has more resistance to artificial aging compared to amine-free MDP-containing dual-cured resin cement.

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The effect of amine-free initiator system and polymerization type on long-term color stability of resin cements: an in-vitro study

Cited by 6 publications

References 35 publications

Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics

Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics

Clinical Survival Rate and Laboratory Failure of Dental Veneers: A Narrative Literature Review

Effect of resin cement type on the final color of high translucent zirconia before and after thermocycling: an in vitro study.

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