Effect of Aging on Coronal Microleakage in Access Cavities through Metal Ceramic Crowns Restored with Resin Composites

Al-Maqtari, Ali Abdullah Alwan; Lui, J. L.

doi:10.1111/j.1532-849x.2010.00593.x

Cited by 5 publications

(4 citation statements)

References 33 publications

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“…Other aging methods include water storage and thermomechanical loading. Previous studies showed statistically significant difference between thermocycling and water storage, thermocycling being superior [ 40 ]. Furthermore, thermomechanical loading is superior to thermocycling, with a statistically significant difference [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

Comparison of microleakage between bulk-fill flowable and nanofilled resin-based composites

AlSagob

Bardwell

Ali

et al. 2018

IMAS

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AimThe objective was to compare the marginal leakage (silver nitrate uptake) of nanohybrid resin-based composite (RBC) and two bulk-fill flowable RBCs with specific clinical protocols.MethodsFour experimental groups of RBC were investigated including conventional composite Filtek™ Supreme in 2 mm increment (FS2), Filtek™ Supreme in 4 mm increment (FS4), Filtek™ Supreme Flowable (BFF), and SureFil® SDR® flow (SDR). Class II box preparation (4 × 4 × 3 mm) in extracted intact human molars was carried out and restored using the experimental groups, all according to the manufacturers’ recommendations except FS4. Samples were aged by thermocycling (2,000 cycles). Microleakage was calculated by measuring dye penetration in sectioned teeth using a stereomicroscope. Level of significance was set at P < 0.05.ResultsBFF and FS2 exhibited the least dye penetration and microleakage measurement with no significant difference between the two groups, followed by SDR. FS4 showed the highest microleakage with significant difference in comparison with BFF and FS2. Gingival microleakage was found to be significantly higher than occlusal microleakage.ConclusionThe microleakage of the bulk-fill composites BFF and SDR are comparable with conventional composite FS2; however, it is more predictable to use FS2.

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Section: Discussionmentioning

confidence: 99%

Comparison of microleakage between bulk-fill flowable and nanofilled resin-based composites

AlSagob

Bardwell

Ali

et al. 2018

IMAS

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“…Repair of the access cavity is of clinical importance with regard to restoring coronal seal. 5 Since SEM images of this study are insufficient to interpret coronal seal efficiency of the repaired crowns, future studies are needed to establish the most appropriate crown and repair material for restoring coronal seal after endodontic treatment.…”

Section: / Discussionmentioning

confidence: 95%

“…3 Second, the seal of the repaired access cavity is crucial to prevent microleakage, thus ensuring the long-term success of the restoration and endodontic treatment. 4,5 Last but not least, the fracture strength of the accessed crown may be compromised. 3,6 The previous studies evaluating the influence of simulated endodontic access preparation on all-ceramic crowns have reported several factors affecting the fracture strength such as the choice of luting cement, 6 the grit size of the rotary instrument used for the access preparation, 6 the repair filling method of the access cavity, 7 and as the most frequently investigated parameter, the type of all-ceramic material used.…”

Section: / Introductionmentioning

confidence: 99%

Effect of endodontic access simulation on the fracture strength of lithium‐disilicate and resin‐matrix ceramic CAD‐CAM crowns

Oğuz

Kılıçarslan

Özcan

2020

J Esthet Restor Dent

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OBJECTIVES The purpose of this in vitro study was to compare the effect of simulated endodontic access preparation on the failure loads of lithium disilicate crowns and resin-matrix ceramic (RMC) crowns. MATERIALS AND METHODS Eighty maxillary first premolar crowns were manufactured by using four different CAD/CAM blocks (n = 20): lithium disilicate (LD; IPS e.max CAD), resin nanoceramic (RNC; Lava Ultimate), flexible nanaoceramic (FNC; GC Cerasmart), and polymerinfiltrated ceramic (PIC; VITA Enamic). Half of each group was accessed and repaired to simulate endodontic treatment. After cyclic loading, all specimens were loaded to failure. Data were analyzed with two-way ANOVA followed by Tukey-HSD test ( = .05). RESULTS The load to failure results showed significant differences for material types (P < .001), but not for endodontic access simulation (P = .09). The highest and lowest mean failure loads were obtained for LD (1546 N) and PIC (843 N), respectively. CONCLUSION The endodontic access preparation was not found to affect the fracture strength of LD and RMC crowns. The LD showed higher fracture strength than RMC crowns. Even though significant differences were noted for failure loads regarding different crown materials, all could reasonably withstand masticatory forces. CLINICAL SIGNIFICANCE The endodontic access preparation through a restoration is known to be a common challenge in clinical practice. Maintaining a repaired LD or RMC crown is feasible and replacement may not be necessary.

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“…En contraparte, en este estudio se observaron proporciones de filtración en todas las piezas y, aunque no sean significativas, algunas como el Permaseal presentaron filtración a niveles de 90%. Dicha filtración es contemplada en los estudios propuestos, (Fakhri, 2009;Al-Maqtari 2010), quienes mencionaron que los conductos radiculares sellados pueden ser recontaminados bajo varias circunstancias, y algunas de ellas pudieron tener influencia en los resultados del presente estudio.…”

Section: Resultsunclassified

Evaluación de la filtración corono-apical en la obturación endodóntica cuando se utilizan diferentes métodos de barrera

Quiroga

Palma

Najera

et al. 2016

OVital

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Este estudio contempla el análisis y comparación del sellado intracoronal en 50 órganos dentariosunirradiculares humanos extraídos, a los que se les realizó tratamiento endodóntico; posteriormente sedividieron en 5 grupos, de 10 cada uno, aplicando en 4 de los grupos los materiales utilizados como métodobarrera: Cavit G, Ketac Molar, Perma Seal, Single Bond y 1 grupo aparte de control que fue conformado sinningún tipo de material de barrera. Luego fueron sumergidos en saliva artificial durante 1 mes; transcurrido estetiempo fueron teñidos con azul de metileno al 2% y se procedió a realizar los cortes para su estudio, evaluandola filtración corono apical en 7 secciones de 1mm cada una en toda la longitud radicular, inmediatamentedespués del material utilizado como método de barrera. Resultados: Se encontró que el adhesivo Single Bond fueel más eficaz como material barrera y que evitó la filtración corono apical.

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Effect of Aging on Coronal Microleakage in Access Cavities through Metal Ceramic Crowns Restored with Resin Composites

Abstract: All tested techniques and materials in this study showed microleakage. Packable composite while a flowable liner showed a marginally better result than packable composite alone. Excessive thermocycling resulted in significant differences among the test groups.

Cited by 5 publications

References 33 publications

Comparison of microleakage between bulk-fill flowable and nanofilled resin-based composites

Comparison of microleakage between bulk-fill flowable and nanofilled resin-based composites

Effect of endodontic access simulation on the fracture strength of lithium‐disilicate and resin‐matrix ceramic CAD‐CAM crowns

Evaluación de la filtración corono-apical en la obturación endodóntica cuando se utilizan diferentes métodos de barrera

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