Comparative in-vitro study of marginal gap of four cad/cam all ceramic systems with thermal aging

Hasaneen, Fatma A; Mogahed, Marwa M

doi:10.4103/tdj.tdj_22_20

Cited by 3 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the effect of thermocycling on the Celtra press group and the e.max group samples both showed statistically significant increase in marginal gap values. Our results agreed with Hasaneen et al (14) who found that thermal aging result in statistically significant increases in marginal gap mean values across all ceramic systems. The difference in thermal expansion between the tooth, the luting agent, and the ceramic caused the marginal gap to widen during thermocycling.…”

Section: Discussionsupporting

confidence: 93%

“…Simulation of the clinical situation have been widely used to evaluate the outcome of many recent studies and thermocycling is one of the main aging methods that provide satisfactory fatigue to the material. (14) The null hypothesis of this research study is that there will be no significant difference regarding the marginal adaptation of sectional laminate veneer made of different glass ceramic materials before and after thermocycling. Therefore, the aim of the current study is to evaluate the effect of thermocycling of different glass ceramic sectional laminate veneers marginal adaptation.…”

Section: Msa Dental Journalmentioning

confidence: 92%

See 1 more Smart Citation

The Influence Of Thermocycling On The Marginal adaptation Of Different Glass Ceramic Sectional Veneers

tantawy

2022

MSA Dental Journal

View full text Add to dashboard Cite

Background: Sectional veneers constructed from different glass ceramic can show variations in the marginal adaptation before and after thermocycling.Methodology: twenty human central incisors were used to fabricate sectional laminate veneers SLV with preparation depth 0.5mm cervically and 0.7mm incisally. Samples were divided equally into groups according to material Group 1: Lithium disilicate Glass-Ceramic (IPS e-max press, Ivoclar, Schaan Liechtenstein) (n=10) and Group 2: zirconia reinforced lithium silicate Glass-Ceramic (Celtra Press, Dentsply Sirona) (n=10). SLV were bonded to the teeth using lightcure resin cement (Relyx veneer) (3M ESPE, Seefeld, Bayern, Germany) The samples were then subjected to 10,000 thermal cycles, the marginal adaptation was measured before and after thermocycling using stereomicroscope under magnification 40X using 8 measurement points for each margin (incisal, proximal, cervical and mid labial) with total of 40 point per sample. Results:The results of ANOVA showed that there was a significant interaction between material and thermocycling. Before thermocycling, e.max samples showed statistically significant higher gap values with (p<0.001) Mean and standard deviation (SD) values (34.80±0.71) than Celtra samples with (p<0.001) (26.33±2.28). While after thermocyling, Celtra samples had significantly higher gap values (53.77±6.67) than e.max samples (42.81±1.67).Conclusions: IPS e.max Press SLV showed better marginal adaptation compared to that of Celtra Press after thermocycling. Marginal gap between restoration and tooth may lead to leakage and marginal discoloration in sectional veneers after years of service.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Msa Dental Journalmentioning

confidence: 92%

The Influence Of Thermocycling On The Marginal adaptation Of Different Glass Ceramic Sectional Veneers

tantawy

2022

MSA Dental Journal

View full text Add to dashboard Cite

show abstract

“…this was in agreement with (Hasaneen F.A. & Mogahed M. M, 2021) (46) , the marginal gap widened during thermocycling due to the different rates of thermal expansion of the ceramic, luting agent, and tooth. The bond between the luting agent and the tooth dissolves as a result of repeatedly subjecting all ceramic materials too high and low temperatures.…”

Section: Discussionsupporting

confidence: 90%

The Impact of Different Preparation Designs on Marginal Adaptation of Pressable Ceramics (An In-vitro Study)

Deeb,

Abdelhalim,

Rabeae

2024

Egyptian Dental Journal

View full text Add to dashboard Cite

Purpose: This study aimed to evaluate the impact of various preparation designs on marginal adaption of pressable ceramic crowns. Materials and Methods:Forty freshly extracted maxillary premolars were used. Premolars were prepared to receive crowns with two marginal designs. The samples were divided randomly into two equal groups based on the tested ceramic materials (n=20); Group E for IPS e-max press and Group C for Celtra press. Each group was subdivided into two subgroups according to the tested finish line (n = 10); Subgroups (EF) and (ES) representing deep chamfer and chisel finish line of E-max samples, respectively. Subgroups (CF) and (CS) representing deep chamfer and chisel finish line of Celtra samples, respectively. Using a stereomicroscope, each sample's marginal gap was assessed microscopically before cementation. After Cementation, specimens were subjected to thermocycling to mimic intraoral conditions and then marginal gap was assessed microscopically.Results: Subgroup (ES) recorded the highest marginal gap mean (62.96±6.48) and subgroup (CF) recorded the lowest one (51.9±4.95). Gp (E) recoded higher marginal gap mean value (63.23± 5.38 µm) than Gp (C) (57.42± 5.07 µm). The chisel margin subgroup recoded a statistically significant higher marginal gap mean value (62.65± 5.7 µm) than the chamfer margin subgroup (57.99± 4.75 µm). Conclusion:Celtra press group (C) showed better marginal adaptation compared to IPS e-max press group (E) before/after cementation. Deep chamfer subgroups (EF) & (CF) showed better marginal adaptation compared to chisel finish line subgroups (ES) & (CS). The results were within the clinically accepted range (120 µm).

show abstract

“…(15) It was mentioned that it has better stability of marginal adaption among indirect restorations. (16) This owed to crystallization firing has a positive effect on the marginal gap on this kind of crowns. (16) Increased in marginal gap for CAD/CAM group after thermocycling, was due to the rupture of the bond between luting agent and the tooth had occurred.…”

Section: Effect Of Thermo-cycling On Marginal Gapmentioning

confidence: 93%

“…(16) This owed to crystallization firing has a positive effect on the marginal gap on this kind of crowns. (16) Increased in marginal gap for CAD/CAM group after thermocycling, was due to the rupture of the bond between luting agent and the tooth had occurred. The cause of this rupture was due to difference in thermal expansion between tooth, luting agent and ceramic, cycling of all ceramics between high and low temperature.…”

Section: Effect Of Thermo-cycling On Marginal Gapmentioning

confidence: 93%

Marginal Adaptation Assessment of Different Post-Obturation Restorative Materials (In-Vitro Study)

Rohym

2023

Ahram Canadian Dental Journal

View full text Add to dashboard Cite

Purpose:The aim of this study was to evaluate the marginal adaptation of two different postobturation restorative materials of premolars with mesio-oclussal-distal MOD cavity. Materials and Methods:Twenty sound premolars received root canal treatment and MOD cavity.All teeth were divided into 2 groups (n=10). GpA: (Ribbond, polyethylene fiber; USA) inserted in short fiber reinforced resin composite, Ever x Posterior; Japan) followed by nanohybrid Filtek Z250xt; 3M,USA); GpB: (fiber post and core with nanohybrid Filtek Z250xt;3M,USA) then CAD/CAM Emax crown. Marginal adaptation was assessed before and after thermocycling using Stereomicroscope. All teeth were subjected to 5000 cycle's equivalents to 6 months. Dwell times were 25 s. in each water bath with a lag time 10 s. The low-temperature point was 5 0C. The high temperature point was 55 0C. Data were collected and analyzed using one-way analysis of variance was performed followed by Tukey's post-hoc test if showed significance between both groups.

show abstract

Comparative in-vitro study of marginal gap of four cad/cam all ceramic systems with thermal aging

Cited by 3 publications

References 0 publications

The Influence Of Thermocycling On The Marginal adaptation Of Different Glass Ceramic Sectional Veneers

The Influence Of Thermocycling On The Marginal adaptation Of Different Glass Ceramic Sectional Veneers

The Impact of Different Preparation Designs on Marginal Adaptation of Pressable Ceramics (An In-vitro Study)

Marginal Adaptation Assessment of Different Post-Obturation Restorative Materials (In-Vitro Study)

Contact Info

Product

Resources

About