Comparison of Marginal Fidelity and Surface Roughness of Porcelain Veneers Fabricated by Refractory Die and Pressing Techniques

Jha, Ritu; Jain, Veena; Das, Taposh K.; Shah, Naseem; Pruthi, Gunjan

doi:10.1111/jopr.12032

Cited by 10 publications

(6 citation statements)

References 25 publications

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“…Another method is the pressing ceramic technique involving waxing up the restoration to the proper form and pressing it under pressure into the evacuated mold, similar to the lost wax technique for metal. The most advanced technique uses the Computer-aided Designing/Computer-aided Manufacturing "CAD/ CAM" system [2].…”

Section: Introductionmentioning

confidence: 99%

One-year clinical evaluation of e.max CAD and LavaTM ultimate laminate veneers with butt joint preparation (Randomized controlled clinical trial)

Elgendi¹,

Rabie²,

Zaki³

2019

Med Res Innov

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The aim of this clinical study was to evaluate ceramic laminate veneers constructed from Lithium disilicate (IPS e.max CAD), and resin nano-ceramic (Lava Ultimate TM CAD/CAM) according to the modified United States of Public Health Service (USPHS) criteria over 12 months. Materials and methods: Twenty-eight ceramic laminate veneers (fourteen for each group) were placed in the Fixed Prosthodontics Department clinics, Faculty of Dentistry, Cairo University by one operator. The restorations were made using CEREC premium 4.4 CAD/CAM software with IPS e.max CAD and Lava Ultimate TM CAD/CAM blocks. Modified USPHS criteria were used to evaluate the clinical performance of the restorations. Patient satisfaction were assessed using visual analogue scale. Fisher's Exact test was used to compare between the two groups. Friedman's test was used to study the changes by time in each group. Patient satisfaction scores (VAS scores) were presented as median and range values.Results: Regrading marginal adaptation, retention, and fracture, through the whole study period; all restorations in the two groups showed (Alpha) scores. While for marginal discoloration, all surfaces of restorations in the two groups showed (Alpha) scores till 6 months. While after 8, 10 and 12 months; the palatal surface of Lava Ultimate group showed (Bravo) scores. However, there was no statistically significant difference between the two groups after 12 months (P-value = 0.481). The overall satisfaction of restorations was very satisfied by 85.7% and satisfied by 14.3%. Conclusion:Both IPS e.max CAD and Lava Ultimate laminate veneers revealed high successful clinical performance over a period of 12 months follow up.

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Section: Introductionmentioning

confidence: 99%

One-year clinical evaluation of e.max CAD and LavaTM ultimate laminate veneers with butt joint preparation (Randomized controlled clinical trial)

Elgendi¹,

Rabie²,

Zaki³

2019

Med Res Innov

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“…Lin et al found the conventional feldspathic method to have better results [6]. Jha et al concluded that both techniques showed similar results [8]. Ghaffari et al…”

Section: Discussionmentioning

confidence: 99%

“…Lin et al found the conventional feldspathic method to have better results [ 6 ]. Jha et al concluded that both techniques showed similar results [ 8 ]. Ghaffari et al showed that CAD-CAM produced better results when compared to the conventional method [ 9 ].…”

Section: Reviewmentioning

confidence: 99%

Marginal Adaptation of Veneers: A Systematic Review

Badami¹,

Priya²,

Krishna³

et al. 2022

Cureus

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This study aimed to systematically review the literature to evaluate the marginal adaptation of veneers using different fabrication methods, namely, conventional feldspathic porcelain laminate veneers (PLVs), computer-aided design-computer-aided machining (CAD-CAM) veneers, and pressed veneers. A comprehensive literature search was performed using electronic databases (PubMed and Google Scholar) as well as hand searches to identify all relevant studies related to veneers and marginal adaptation. The identified studies were screened for assessing the inclusion and exclusion criteria. The included articles were then subjected to data extraction and analysis. The search resulted in 130 articles, of which six were included in this systematic review. All included articles were assessed for adaptation of margins. Based on the findings of this systematic review, no significant differences were found in the marginal adaptation of CAD-CAM and conventional feldspathic PLVs. The marginal fidelity of ceramic veneers issuing from the various fabrication techniques was clinically acceptable.

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“…Marginal adaptation of all the laminate veneers in each group was evaluated qualitatively on epoxy resin dies (obtained from post-restorative impressions) at baseline and at each follow-up under scanning electron microscope (SEM). [ 23 ] All epoxy resin dies were gold sputtered [ Figure 2 ] to form a uniform layer of thickness of about 30–40 nm over the specimens to make them conductive of electricity and help in scanning by high energy electron beam. All the four margins of the laminates (Cervical, Incisal, Mesial, and Distal) were evaluated at the midpoint of the respective margin under × 200 magnification.…”

Section: Methodsmentioning

confidence: 99%

Comparative evaluation of effects of bleaching on color stability and marginal adaptation of discolored direct and indirect composite laminate veneers under in vivo conditions

Jain

Das

Pruthi

et al. 2015

J Indian Prosthodont Soc

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Statement of Problem:Change in color and loss of marginal adaptation of tooth colored restorative materials is not acceptable. Bleaching is commonly used for treating discolored teeth. However, the literature is scanty regarding its effect on color and marginal adaptation of direct and indirect composite laminate veneers (CLVs) under in vivo conditions.Purpose:Purpose of the study was to determine the effect of bleaching on color change and marginal adaptation of direct and indirect CLVs over a period of time when exposed to the oral environment.Materials and Methods:For this purpose, a total of 14 subjects irrespective of age and sex indicated for CLV restorations on maxillary anterior teeth were selected following the inclusion and exclusion criteria. For each subject, indirect CLVs were fabricated and looted in the first quadrant (Group 1) and direct CLV's (Group 2), were given in the second quadrant. Color change was assessed clinically using intra-oral digital spectrophotometer and marginal adaptation was assessed on epoxy resin replica of the tooth-restoration interface under scanning electron microscope. After 6 months, the subjects underwent a home bleaching regimen for 14 days using 10% carbamide peroxide. The assessment of color change and marginal adaptation was done at 6 months after veneering (0–180 days), immediately after the bleaching regimen (0–194 days) and 3 months after the bleaching regimen (0–284 days).Results:The difference in median color change (ΔE) between the groups was tested using Wilcoxon rank sum test while the median color change with time within the groups was tested using Wilcoxon signed rank test. The difference in the rates of marginal adaptation was tested between the groups using Chi-square/Fisher's exact test.Bleaching led to statistically significant color change at cervical (CE), middle and incisal (IE) regions when direct and indirect composites were compared (P < 0.05). During intra-group comparison, direct CLV's showed significant color change at CE and IE regions when ΔE was compared at 180 days and 284 days (CE 10 vs. CE 30, P = 0.008, IE 10 vs. IE 30, P = 0.003). No significant differences were found when within group comparison was made for indirect laminates. Intergroup comparison between the groups showed significant difference in marginal adaptation at CE margin at all.time points (at baseline, P = 0.005; at 180 days, P = 0.007; 194 days, P = 0.025; at 284 days, P = 0.067).Conclusion:After bleaching, indirect CLVs performed better in terms of color stability whereas direct CLVs performed better in terms of marginal adaptation.Clinical Significance:Indirect composites should be preferred to direct composites as veneering materials as they have better color stability. Special attention should be given to their marginal adaptation especially in the CE region. Bleaching should be avoided in patients with composite restorations in the mouth.

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Comparison of Marginal Fidelity and Surface Roughness of Porcelain Veneers Fabricated by Refractory Die and Pressing Techniques

Cited by 10 publications

References 25 publications

One-year clinical evaluation of e.max CAD and LavaTM ultimate laminate veneers with butt joint preparation (Randomized controlled clinical trial)

One-year clinical evaluation of e.max CAD and LavaTM ultimate laminate veneers with butt joint preparation (Randomized controlled clinical trial)

Marginal Adaptation of Veneers: A Systematic Review

Comparative evaluation of effects of bleaching on color stability and marginal adaptation of discolored direct and indirect composite laminate veneers under in vivo conditions

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