Three-dimensional analysis of marginal and internal fit of copings fabricated with polyetherketoneketone (PEKK) and zirconia

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

doi:10.1016/j.jpor.2016.07.005

Cited by 59 publications

(53 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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: 84%

“…The abutment tooth of the master model (reference STL, nominal data) and the internal region of the crown (scan data) were alignment-transformed with a 3-D inspection software (Verify, Geomagic GmbH, Stuttgart, Germany) with the obtained STL file. The three-dimensional evaluation method is based on the basic principle of the merging software, which is to mathematically find the best fit for the abutment teeth and dental prostheses at the closest distance 343536. Therefore, accurate merging on one surface can cause errors on other surfaces due to compensation, which does not allow the representation of realistic cement values 343536.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 84%

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was also shown that the internal adaptation of a restoration and the retentive force have no significant correlation with each other. Bae 7 reported significantly better internal and marginal fit in polyetherketoneketone (PEKK) copings compared to zirconia, while de Paula Silveira 8 reported better internal adaptation for composite resin compared to a ceramic group. This controversy could be attributed to different types of scanners, milling machines, blanks, or blocks than those used in the present study.…”

Section: P4mentioning

confidence: 99%

Comparing Retention and Internal Adaptation of Different Implant-Supported, Metal-Free Frameworks

Ghodsi¹,

Zeighami²,

Azad³

2018

Int J Prosthodont

View full text Add to dashboard Cite

show abstract

“…As fully sintered Y-TZP has high strength, processing takes longer and wears the milling tools more rapidly. 42 As a result, all processing steps are generally conducted with presintered zirconia and sintered after milling. 42 However, sintering results in a linear shrinkage of 20% to 25% and can also affect the fit of a restoration.…”

mentioning

confidence: 99%

“…42 As a result, all processing steps are generally conducted with presintered zirconia and sintered after milling. 42 However, sintering results in a linear shrinkage of 20% to 25% and can also affect the fit of a restoration. 43 Long-span zirconia frameworks have higher marginal gap values, particularly when these are produced from presintered blocks, 17 and the data regarding the marginal and internal discrepancy of CAD-CAM zirconia restorations manufactured using digital scan techniques remain scarce.…”

mentioning

confidence: 99%

Comparison of marginal and internal fit of 3-unit zirconia frameworks fabricated with CAD-CAM technology using direct and indirect digital scans

Arezoobakhsh

Shayegh

Ghomi

et al. 2020

The Journal of Prosthetic Dentistry

View full text Add to dashboard Cite

Statement of problem. Accurate marginal and internal fit of dental restorations are essential for their long-term success. The fit of zirconia restorations prepared using digital scan systems has not been fully evaluated.Purpose. The purpose of this in vitro study was to compare the marginal and internal fit of 3-unit zirconia frameworks fabricated using direct and indirect digital scans.Material and methods. In a maxillary model, the left first premolar and first molar were prepared to receive 3-unit zirconia fixed dental prostheses. Conventional impressions were made using stock trays and 2-step putty/wash polyvinyl siloxane material and were scanned using laboratory scanner (Conventional Impression-Laboratory scanner [CIL] group). The impressions were then poured, and the stone casts were scanned (Dental Cast-Laboratory scanner [DCL] group). Digital scans were made using TRIOS (TRIOS Intraoral scanner [TRI] group) and CS3600 (CS3600 Intraoral scanner [CSI] group) scanners (n=10). Zirconia copings were designed and milled from presintered blocks and subsequently sintered. Marginal, mid-axial, axio-occlusal, and mid-occlusal discrepancies were measured using the silicone replica technique with stereomicroscopy at ×50 magnification. The data were analyzed using 1-way ANOVA (a=.01).Results. The ANOVA revealed significant differences among the studied groups in terms of all studied characteristics (P.01). Marginal gap was significantly higher in the DCL group (106 ±45 mm) compared with all other groups (P.01). However, no significant differences were observed in marginal gap between the TRI (60 ±15 mm) and CSI (55 ±13 mm) groups (P>.01). Internal gap in the mid-occlusal and axio-occlusal regions were significantly higher in the CIL (238 ±92 mm and 227 ±95 mm) and DCL (248 ±71 mm and 216 ±68 mm) groups than those recorded in the TRI (104 ±27 mm and 126 ±31 mm) and CSI (128 ±16 mm and 147 ±28 mm) groups (P.01). Internal discrepancies in the mid-axial position were similar between the TRI (70 ±15 mm) and CSI (72 ±23 mm) groups (P>.01), but these values were significantly lower than those recorded in the CIL (88 ±31 mm) and DCL (85 ±30 mm) groups (P.01). Conclusions.Within the limitations of this study, zirconia frameworks in the TRI and CSI groups had lower marginal and internal gaps compared with those in the DCL and CIL groups. Marginal gap in all groups was within a clinically acceptable range. (J Prosthet Dent 2020;123:105-12)

show abstract

Three-dimensional analysis of marginal and internal fit of copings fabricated with polyetherketoneketone (PEKK) and zirconia

Abstract: The marginal and internal fit of both PEKK and zirconia copings of both canine and molar were within the clinically acceptable range. However, the PEKK presented better fitness compared with the zirconia.

Cited by 59 publications

References 32 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

Comparing Retention and Internal Adaptation of Different Implant-Supported, Metal-Free Frameworks

Comparison of marginal and internal fit of 3-unit zirconia frameworks fabricated with CAD-CAM technology using direct and indirect digital scans

Contact Info

Product

Resources

About