Marginal adaptation of CAD-CAM onlays: Influence of preparation design and impression technique

Ferruzzi, Fernanda; Neto, Constantino Fernandes; Rubo, José Henrique; Santos, Gildo Coelho; Santos, Maria Jacinta Moraes Coelho

doi:10.1016/j.prosdent.2017.10.010

Cited by 25 publications

(27 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result was in agreement with those of previous studies that showed significant effect of preparation design on marginal adaptation of restorations. 19,27,34,37 In this study, we tried our best to simulate the clinical setting. According to Holmes et al, marginal gap refers to the perpendicular distance between the cervical margin of restoration and tooth preparation margin.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, limited studies have addressed the effect of preparation design on the properties of overlay restorations, and the existing ones focused only on the fracture resistance of these restorations 21 . Most relevant previous studies have evaluated inlays and/or inlays with partial cusp coverage 19,27,34,35 . A gap of information exists regarding the effect of preparation design on the marginal adaptation of ceramic overlays.…”

Section: Introductionmentioning

confidence: 99%

“…21 Most relevant previous studies have evaluated inlays and/or inlays with partial cusp coverage. 19,27,34,35 A gap of information exists regarding the effect of preparation design on the marginal adaptation of ceramic overlays. Thus, this study sought to evaluate the marginal adaptation of ZLS overlays with different preparation designs.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Marginal adaptation of zirconia‐reinforced lithium silicate overlays with different preparation designs

Falahchai

Hemmati

Asli

et al. 2020

J Esthet Restor Dent

View full text Add to dashboard Cite

Objective: Following the advent of strong adhesive bonding, the conservative tooth preparation designs without a retentive form gained increasing popularity. This study aimed to evaluate the marginal adaptation of zirconia-reinforced lithium silicate (ZLS) overlays with different preparation designs. Materials and methods: Forty sound human maxillary first molars were collected and divided into four groups (n = 10) according to their preparation design for the fabrication of ZLS overlays: (O) anatomical occlusal reduction, (OS) anatomical occlusal reduction with rounded shoulder, (OG) anatomical occlusal reduction with a central groove, and (OSG) anatomical occlusal reduction with rounded shoulder and central groove. A video measuring machine (VMM) was used to measure the marginal gap. Statistical analysis was carried out using one-way ANOVA followed by paired t test and Tukey's test (α = .05). Results: The gap size was significantly different between the groups both before (P = .004) and after (P = .008) cementation, and it was significantly smaller in group O than group OSG (P = .002 before and P = .004 after cementation). Marginal gap increased in all groups following cementation (P < .001). Conclusions: Group O showed comparable marginal adaptation with groups OS and OG while group OSG with the most complex design showed the lowest marginal adaptation for ZLS overlays. Clinical Significance: According to the results of this in vitro study, it may be stated that for defect-free teeth requiring occlusal restoration, the occlusal surface preparation alone would suffice to achieve optimal marginal adaptation, and retentive and more invasive preparation designs are not required.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Marginal adaptation of zirconia‐reinforced lithium silicate overlays with different preparation designs

Falahchai

Hemmati

Asli

et al. 2020

J Esthet Restor Dent

View full text Add to dashboard Cite

show abstract

“…High survival rates, fracture resistance and proper marginal integrity of CAD/CAM partial coverage restorations (PCRs) were reported in studies simulating 5-year clinical service [1][2][3][4] .…”

Section: Introductionmentioning

confidence: 99%

Clinical outcomes of zirconia-reinforced lithium silicate partial coverage crowns compared to lithium disilicate partial coverage crowns. A randomized controlled split-mouth clinical study

2019

View full text Add to dashboard Cite

Background: Despite the fact that preliminary clinical results of conservative partial coverage restorations (PCRs) are promising, the clinical behavior of different PCR ceramic materials is rarely investigated in clinical trials. This study aimed to evaluate the clinical outcomes of partial coverage restorations (PCR) fabricated with zirconia-reinforced lithium silicate ceramic system compared to partial coverage restorations fabricated with lithium disilicate ceramic system. Methods: 46 vital premolars and molars of 14 patients were restored with PCRs (23 Vita Suprinity and 23 IPS e.max CAD). PCRs were CAD/CAM fabricated in the lab and adhesively luted with dual-polymerizing resin cement (Duolink. BISCO, USA). Clinical evaluation of PCRs was performed according to the Modified United States Public Health Service (USPHS) at baseline, 6 and 12 months post-insertion. Absolute failure was demonstrated by Kaplan-Meier survival rate analysis. Results: After 12 months observation, all PCRs of both ceramic groups demonstrated 100% survival rate. Non-significant decrease in Alpha ratings for marginal adaptation (p = 0.1560) and marginal discoloration (p = 0.6078) in e-max group. While in the Suprinity group, PCRs demonstrated 100% Alpha ratings for marginal adaptation and only one Bravo rating (p= 0.3625) for marginal discoloration after 12 month observation. Conclusions: Both Vita-Suprinity and e.max CAD partial coverage restorations are considered reliable treatment options for restoring larger defects in posterior dentition. Trial registration: ClinicalTrials.gov NCT02861729 04/08/2016

show abstract

“…CAD-CAM systems present an alternative to the traditional method of fabricating indirect restorations, reducing time and cost (9) because these systems do not require a firing procedure (10) , as the hybrid ceramic block, Vita -Enamic. The material consists of two interpenetrating networks, a glassceramic network and a methacrylate polymer network, with a proportion of 84% and 16% respectively (by weight).…”

Section: Introductionmentioning

confidence: 99%

Effect of CAD/CAM Technology System and Timing of Dentin Sealing Application on Hybrid Ceramic Endo-crowns Marginal Fit

Korsel

2019

Egyptian Dental Journal

View full text Add to dashboard Cite

Purpose: The purpose of this study was to determine the influence of CAD/CAM system type and immediate dentin sealing (IDS) on the marginal fit of hybrid ceramic endocrowns. Material and Methods: Forty recently extracted lower molars were selected, and standardized prepared to receive endocrown restorations .All restorations were milled in hybrid ceramic (VITA ENAMIC® for CEREC®/ inLab®, VITA Zahnfabrik H. Rauter GmbH & Co.KG., Germany). The teeth were assigned to 4 groups (n=10) according to: (1) The type of CAD/CAM system: a) DOF system (DOF Inc., Seoul, South Korea) and b) CEREC inLab system (Sirona Dental Systems, Germany)], (2) The timing of dentin sealing. a) Immediate dentin sealing (IDS) and b) Delayed dentin sealing (DDS)].The vertical marginal gaps were then measured using measuring Stereomicroscope (Nikon Eclips E600, Tokyo, Japan). The obtained data were submitted to Kruskal-Wallistest (α=.05). Results: All marginal gap values found in this study were below the clinically acceptable value of restorations which is 120 µm. A significant difference was found between group 1 (DOF, IDS), group 2 (DOF ,DDS) and between group3 (CEREC , DDS), group 4 (CEREC, IDS) also between group 2(DOF, DDS) and 4 (CEREC, IDS). Conclusion: This study concluded that there is a significant effect of the CAD \CAM system and the timing of dentin sealing application on the marginal fit of the Hyprid ceramic endocrown restorations, where CEREC in-lab system and the immediate dentin sealing decrease the marginal adaptation .

show abstract

Marginal adaptation of CAD-CAM onlays: Influence of preparation design and impression technique

Cited by 25 publications

References 42 publications

Marginal adaptation of zirconia‐reinforced lithium silicate overlays with different preparation designs

Marginal adaptation of zirconia‐reinforced lithium silicate overlays with different preparation designs

Clinical outcomes of zirconia-reinforced lithium silicate partial coverage crowns compared to lithium disilicate partial coverage crowns. A randomized controlled split-mouth clinical study

Effect of CAD/CAM Technology System and Timing of Dentin Sealing Application on Hybrid Ceramic Endo-crowns Marginal Fit

Contact Info

Product

Resources

About