Effect of feldspathic porcelain layering on the marginal fit of zirconia and titanium complete-arch fixed implant-supported frameworks

Yılmaz, Burak; Alshahrani, Faris A.; Kale, Ediz; Johnston, William M.

doi:10.1016/j.prosdent.2017.11.003

Cited by 16 publications

(40 citation statements)

References 38 publications

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“…In the included publications, more than half (27 out of 47 articles) described the implant‐framework misfit with 2D measurements, such as vertical (31 articles) 4,17‐45 and horizontal gaps (4 articles) at the margin, 18,43,44 as well as internal gaps between the mating surfaces (4 articles), 19‐21,46 by stereomicroscope and SEM in different experimental conditions (one‐screw test and definitive‐fit test). Besides, 18 articles demonstrated the implant framework misfit with 3D measurements, 6,18,22,38,42,45,47‐58 including the volumetric discrepancy 58 and spatial deviation in X ‐, Y ‐, and Z ‐axis 6,45,47,48,50,51,54‐56 . The 3D data acquisition was usually performed by optical or tactile scanning, 42,56‐58 computerized tomography (CT), 6,18,22,52,53,59 and coordinate measuring machine (CMM) 22,38,47‐51,54‐56 .…”

Section: Resultsmentioning

confidence: 99%

“…Besides, 18 articles demonstrated the implant framework misfit with 3D measurements, 6,18,22,38,42,45,47‐58 including the volumetric discrepancy 58 and spatial deviation in X ‐, Y ‐, and Z ‐axis 6,45,47,48,50,51,54‐56 . The 3D data acquisition was usually performed by optical or tactile scanning, 42,56‐58 computerized tomography (CT), 6,18,22,52,53,59 and coordinate measuring machine (CMM) 22,38,47‐51,54‐56 . The advantages, disadvantages and accuracy of different acquisition methods are listed in Table 4.…”

Section: Resultsmentioning

confidence: 99%

“…Following the reconstruction of the virtual model, the 3D discrepancy was often computed by an inspection software with various data processing algorithms (Table 5). In most of the studies, the framework was virtually mounted onto the abutments with the “best fit” position of the 3D models, using the least square method (Lsq), 6,22,42,45,48,49,51‐53,56 zero method, 54 or orthogonal 3‐2‐1 method 55 . The one‐screw test usually used at chairside can also be mimicked on the computer screen through aligning the distal virtual implant and abutment, namely “lofting.” 58 …”

Section: Resultsmentioning

confidence: 99%

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Implant framework misfit: A systematic review on assessment methods and clinical complications

Pan

Tsoi

Lam

et al. 2020

Clin Implant Dent Rel Res

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Background The fit of implant‐supported prostheses is of prime importance for the long‐term success of implant therapy. Purpose This systematic review aimed to evaluate recent evidence on current techniques for assessing implant‐framework misfit, its associated strain/stress, and whether these misfits are related to mechanical, biological, and clinical consequences. Materials and methods An electronic search for publications from January 2010 to October 2020 was performed using the Pubmed, Embase, Web of Science, and Cochrane Library databases with combined keywords on implant‐framework misfit assessments and related clinical complications. Inclusion and exclusion criteria were applied. After full‐text analyses, data extraction was implemented on current techniques of misfit assessment and the relationship between the misfit and the induced strain/stress. Results A total of 3 in vivo and 92 in vitro studies were selected, including 47 studies on quantifying the degree of implant‐framework misfit with dimensional techniques, 24 studies measuring misfit‐induced strain/stress with modeling techniques, and 24 studies using both methods. The technical details, advantages, and limitations of each technique were illustrated. The correlation between the implant‐framework misfit and the induced strain/stress has been revealed in vitro, while that with the biological complications and implant/prostheses failure was weak in clinical studies. Conclusions Dimensional and modeling techniques are available to measure the implant‐framework misfit. The passivity of implant‐supported fixed prostheses appeared related to the induced strain/stress, but not the clinical complications. Further studies combining three‐dimensional (3D) assessments using dimensional and modeling techniques was needed.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Implant framework misfit: A systematic review on assessment methods and clinical complications

Pan

Tsoi

Lam

et al. 2020

Clin Implant Dent Rel Res

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“…Several studies have reported that marginal discrepancy values greater than 120 μm are clinically unacceptable [ 9 – 11 , 17 , 18 ]. In the present study, no specimen showed a mean marginal discrepancy value greater than 120 μm; therefore, all methods were found to be successful in terms of marginal fit [ 21 , 22 ].…”

Section: Discussionmentioning

confidence: 99%

“…Zirconia unites all of the positive characteristics of ceramics, although it has limited esthetics due to its high opacity. Noritake Alliance (Noritake Dental Supply Co. Ltd., Japan) is one of the CAD/CAM systems capable of making production from zirconia blocks containing 94.4% ZrO 2 and 5.4% Y 2 O 3 [ 15 – 17 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Marginal Fits of Crown Substructure Designs in Implant-Supported Abutments

Görüş

Üner

2018

Med Sci Monit

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BackgroundThe purpose of this clinical study was to compare the marginal adaptation of infrastructure design with 4 different techniques.Material/MethodsForty tissue-level implant abutments (NTA, Shorter) were inserted on implant analogs. The samples were placed randomly in the wax blocks in the arch form of the upper jaw so that there would be 10 in each group. Test samples were obtained using the conventional casting method (CC), milling from metal blocks method (MB), direct metal laser sintering method (LS), and Noritake Alliance (NA) system. Data were analyzed by ANOVA with t tests.ResultAfter porcelain oven-drying, marginal gaps of metal substructures obtained by using conventional casting and milling methods were observed to decrease. The smallest value of the marginal gaps was found in the Noritake (NA) system, and the largest value in the milling (MB) method before and after oven-drying. The marginal gap of the direct metal laser sintering method was not significantly different from the change in the marginal gap of other metal substructures (p>0.05).ConclusionsThe marginal gap of the substructures obtained using the direct metal laser sintering method was not significantly different from the change in marginal gap of other metal substructures (p>0.05).

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Trueness and marginal fit of implant-supported complete-arch fixed prosthesis frameworks made of high-performance polymers and titanium: An explorative in-vitro study

Abou‐Ayash

Schimmel

Özcan

et al. 2021

Journal of Dentistry

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Effect of feldspathic porcelain layering on the marginal fit of zirconia and titanium complete-arch fixed implant-supported frameworks

Cited by 16 publications

References 38 publications

Implant framework misfit: A systematic review on assessment methods and clinical complications

Implant framework misfit: A systematic review on assessment methods and clinical complications

Evaluation of Marginal Fits of Crown Substructure Designs in Implant-Supported Abutments

Trueness and marginal fit of implant-supported complete-arch fixed prosthesis frameworks made of high-performance polymers and titanium: An explorative in-vitro study

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