In vitro assessment of the marginal and internal fits of interim implant restorations fabricated with different methods

Park, Jin-Young; Jeong, Il-Do; Lee, Jaejun; Bae, So-Yeon; Kim, Ji‐Hwan; Kim, Woong-Chul

doi:10.1016/j.prosdent.2016.03.012

Cited by 50 publications

(59 citation statements)

References 30 publications

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“…Furthermore, both the LC and ZC exhibited positive and negative errors in the inner face generated during the process of combining the digital impressions of the crown. These findings support those of previously published studies on this topic 29303132333435363738394041. The quantitative evaluation of the marginal adaptation is not yet standardized and can be misleading 42.…”

Section: Discussionsupporting

confidence: 85%

“…One experienced dental technician was involved in the measurement. As it involves a potential bias such as morphological and rounded margins, it is practically necessary to determine the number of measurements, given that it is difficult to describe a certain gap with only one measurement point 30. Therefore, the measurement points in the current study were selected according to the contour difference of the crown and the abutment 30…”

Section: Methodsmentioning

confidence: 99%

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Evaluation of the marginal and internal gaps of three different dental prostheses: comparison of the silicone replica technique and three-dimensional superimposition analysis

et al. 2017

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PURPOSEThe purposes of this study were to evaluate the marginal and internal gaps, and the potential clinical applications of three different methods of dental prostheses fabrication, and to compare the prostheses prepared using the silicone replica technique (SRT) and those prepared using the three-dimensional superimposition analysis (3DSA).MATERIALS AND METHODSFive Pekkton, lithium disilicate, and zirconia crowns were each manufactured and tested using both the SRT and the two-dimensional section of the 3DSA. The data were analyzed with the nonparametric version of a two-way analysis of variance using rank-transformed values and the Tukey's post-hoc test (α = .05).RESULTSSignificant differences were observed between the fabrication methods in the marginal gap (P < .010), deep chamfer (P < .001), axial wall (P < .001), and occlusal area (P < .001). A significant difference in the occlusal area was found between the two measurement methods (P < .030), whereas no significant differences were found in the marginal gap (P > .350), deep chamfer (P > .719), and axial wall (P > .150). As the 3DSA method is three-dimensional, it allows for the measurement of arbitrary points.CONCLUSIONAll of the three fabrication methods are valid for measuring clinical objectives because they produced prostheses within the clinically acceptable range. Furthermore, a three-dimensional superimposition analysis verification method such as the silicone replica technique is also applicable in clinical settings.

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Section: Discussionsupporting

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Evaluation of the marginal and internal gaps of three different dental prostheses: comparison of the silicone replica technique and three-dimensional superimposition analysis

et al. 2017

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“…1). For fit evaluation silicon replica technique was used [4,12]. Fit Checker black (GC Corporation, Tokyo, Japan), a silicone for revealing high spots and pressure points was placed between copings and resin duplicated teeth to simulate the luting cement, until set.…”

Section: Experimental Partmentioning

confidence: 99%

“…Subtractive technologies as hard metal milling (HM) and soft metal milling (SM), milling of zirconia, ceramic, composite resin wax or resin for casting patterns and hybrid materials are successfully used for decades in dental field. Limitations on dimensions and complexity of shapes obtained by block cutting led to development of new additive fabrication methods, such as selective laser melting (SLM), selective laser-sintering (SLS), stereolithography (SLA), and digital light processing (DLP) [4]. While SLS and SLM can directly produce metal copings and frameworks using a high-temperature laser applied to metal particles, SLA and DLP are used to manufacture models, provisionals, and patterns [5].…”

mentioning

confidence: 99%

“…Marginal gap is an important factor for long-term success of fixed restorations, being responsible for 10% of prosthetic failure, misfit leading to dissolution of luting agent, bacterial infiltration, secondary decay with pulp complications, periodontal disease, gum bleeding, marginal discoloration, ceramic cipping, loss of retention, functional and esthetic failure [3,4,[10][11][12][13]. Literature suggest a range of accepted marginal gaps, from 120 µm suggested by Mclean and von Fraunhoder to 100 µm.…”

mentioning

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Analysis of Internal and Marginal fit of Metal-ceramic Crowns During Processing, Using Conventional and Digitized Technologies

Savencu¹,

Porojan²

2018

Rev. Chim.

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Copings accuracy is an important factor for long-term clinical success of ceramic fused to metal dental restorations. The purpose of the study was to investigate marginal and internal fit of metal-ceramic crowns during processing, using conventional and digitized technologies. Metal copings were produced by Digital light Processing (DLP), invested and casted. Ceramic veneers were overpressed. Internal and marginal fit was measured using silicon replica technique for patterns, casted frameworks and final ceramic fused to metal crowns. Best adaptation was found in resin-pattern group, with small increasing of gap after casting and after ceramic pressing.

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Marginal and internal fit and fracture resistance of three‐unit provisional restorations fabricated by additive, subtractive, and conventional methods

Falahchai

Rahimabadi

Khabazkar

et al. 2022

Clinical & Exp Dental Res

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Objectives: To compare the marginal and internal fit and fracture resistance of three-unit provisional fixed dental prostheses (FDPs) fabricated by additive, subtractive, and conventional methods. Material and Methods: Eighty 3-unit FDPs were fabricated on metal dies of the maxillary right second premolar and second molar by four different techniques (n = 20):The direct method by using autopolymerizing polymethyl methacrylate (PMMA), indirect method by the compression molding technique, subtractive manufacturing by using PMMA blocks, and additive manufacturing by using digital light processing technology.The adaptation of restorations at the marginal, axial, cuspal, and fossa areas was assessed by using the silicone replica technique. After thermocycling and cyclic loading, the fracture resistance was measured by a universal testing machine. Data were analyzed by a twoway analysis of variance (ANOVA), ANOVA, and Tukey test (α = .05). Results:The mean gap measured in the additive group was lower than that in all other groups at all points (p < .05); however, the difference in the marginal gap with the subtractive group was not significant (p = .995). The mean marginal and axial gaps in the subtractive group were significantly lower than the corresponding values in both conventional groups (p < .05). A significant difference existed between all groups regarding the mean cuspal and fossa gaps (p < .05). The mean fracture resistance of the additive group was significantly higher than that of indirect (p = .018) and direct (p < .001) groups, and the fracture resistance of the subtractive group was significantly higher than that of the direct group (p = .020). Conclusion:The digitally fabricated provisional FDPs showed superior marginal and internal fit and higher fracture resistance than the conventionally fabricated FDPs.Between the digital methods, the additive technique yielded superior internal fit.

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In vitro assessment of the marginal and internal fits of interim implant restorations fabricated with different methods

Cited by 50 publications

References 30 publications

Evaluation of the marginal and internal gaps of three different dental prostheses: comparison of the silicone replica technique and three-dimensional superimposition analysis

Evaluation of the marginal and internal gaps of three different dental prostheses: comparison of the silicone replica technique and three-dimensional superimposition analysis

Analysis of Internal and Marginal fit of Metal-ceramic Crowns During Processing, Using Conventional and Digitized Technologies

Marginal and internal fit and fracture resistance of three‐unit provisional restorations fabricated by additive, subtractive, and conventional methods

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