Novel-design ultra-thin CAD/CAM composite resin and ceramic occlusal veneers for the treatment of severe dental erosion

Schlichting, Luís Henrique; Maia, H.P.; Magne, Pascal

doi:10.1016/s0022-3913(11)60035-8

Cited by 200 publications

(216 citation statements)

References 27 publications

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“…5,8 One drawback of following the standard guidelines for making laboratory assessments is the time required to complete the test. Therefore, this study chose to follow a protocol presented by Magne and Knezevic, 13 adapted from an original study by Fennis et al 24 This methodology is presented as a balance between the classic fatigue tests with low loads for millions of cycles and the compression tests, 25 insofar as the specimens were subjected to loads that were within physiological limits and that were of extrinsic origin, such as those occurring as a result of trauma. 25 Although all of the specimens survived the proposed test, the results of this research should be analyzed within its limitations.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, this study chose to follow a protocol presented by Magne and Knezevic, 13 adapted from an original study by Fennis et al 24 This methodology is presented as a balance between the classic fatigue tests with low loads for millions of cycles and the compression tests, 25 insofar as the specimens were subjected to loads that were within physiological limits and that were of extrinsic origin, such as those occurring as a result of trauma. 25 Although all of the specimens survived the proposed test, the results of this research should be analyzed within its limitations. Krifka et al 9 demonstrated that preparations with reduced cusps resulted in better marginal integrity and reduced crack formation than teeth without cusp reduction.…”

Section: Discussionmentioning

confidence: 99%

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Influence of surrounding wall thickness on the fatigue resistance of molars restored with ceramic inlay

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Influence of surrounding wall thickness on the fatigue resistance of molars restored with ceramic inlay

et al. 2014

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“…1 Mainly because of their higher fracture resistance, better stress distribution, [2][3][4][5][6] and lower abrasion of the antagonist enamel, 7,8 highdensity CAD/CAM polymers can be used as an alternative to glass ceramics. Methacrylatebased materials are still among the most commonly used CAD/CAM polymers.…”

Section: Clinical Implications Introductionmentioning

confidence: 99%

PEEK surface treatment effects on tensile bond strength to veneering resins

Stawarczyk

Jordan

Schmidlin

et al. 2014

The Journal of Prosthetic Dentistry

170

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STATEMENT OF PROBLEM Polyetheretherketone (PEEK) can be used as a framework material for fixed dental prostheses. However, information about the durable bond to veneering resins is still scarce. PURPOSE The purpose of this study was to investigate the effect of chemical treatments of PEEK on tensile bond strength (TBS) to veneering resins with special emphasis on surface free energy (SFE) and surface roughness (SR). MATERIAL AND METHODS Seven-hundred fifty PEEK specimens were fabricated and divided into the following 3 pretreatment groups (n=250/group): etching with sulfuric acid for 60 seconds, etching with piranha acid for 30 seconds, and an unetched control. After pretreatment, SFE was determined by using contact angle measurements and SR with a profilometer (n=10/group). The topography of pretreated PEEK surfaces was examined with scanning electron microscopy. Remaining specimens (n=240 per group) were conditioned with visio.link or Signum PEEK Bond, or were left untreated as the control group. Half of each group was veneered with Sinfony or VITA VM LC (n=40/group), and TBS was measured after storage in distilled water at 37°C for either 24 hours or 60 days. Data were analyzed by 4-way and 1-way ANOVA followed by the Scheffé post hoc test and chi-square test (=.05). RESULTS PEEK specimens etched with sulfuric acid resulted in higher SFE and SR than specimens without pretreatment or etching with piranha acid. Etching with sulfuric acid or piranha acid led to no general recommendations with respect to TBS. Conditioning with visio.link or Signum PEEK Bond significantly increased the TBS (P<.001). PEEK veneered with Sinfony showed significantly higher TBS values than those veneered with VITA VM LC (P<.001). CONCLUSIONS Sufficient TBS for bonding to veneering resin can only be achieved when additional adhesive materials were applied. ABSTRACTStatement of the problem. Polyetheretherketone (PEEK) can be used to support fixed dental prostheses (FDPs). However, information about the durable bond to veneering resins is still scarce.Purpose. The purpose of this study was to investigate the effect of chemical treatments of PEEK on tensile bond strength (TBS) to veneering resins with special emphasis on surface free energy (SFE) and surface roughness (SR). Materials and methods.Seven-hundred-fifty PEEK specimens were fabricated and divided into the following 3 pretreatment groups (n=250/group): etching with sulfuric acid for 60 seconds, piranha acid for 30 seconds, and an unetched control. After pretreatment, SFE was determined by using contact angle measurements and SR with a profilometer (n=10/group).

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“…While the use of ceramic materials may risk the occurrence of brittle fractures, the recently introduced composite resin blocks for CAD/CAM restorations have several advantages, including low wear rates, favorable aesthetics, cost effectiveness, optimal stiffness, and an elastic modulus similar to dentin [6,22,23]. Furthermore, the fracture resistance of the composite resin blocks is greater than that observed for feldspathic ceramic restorations [23][24][25][26][27]. Finally, a finite element model was used to demonstrate that composite resin onlays reduce stress concentrations in ETT due to their lower modulus of elasticity [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of proximal box elevation on the marginal quality and fracture behavior of root-filled molars restored with CAD/CAM ceramic or composite onlays

et al. 2014

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OBJECTIVES This study investigated the influence of proximal box elevation (PBE) with composite resin when applied to deep proximal defects in root-filled molars with mesio-occluso-distal (MOD) cavities, which were subsequently restored with computer-aided designed/computer-aided manufacturing (CAD/CAM) ceramic or composite restorations. MATERIALS AND METHOD Root canal treatment was performed on 48 human mandibular molars. Standardized MOD cavities were prepared with the distal box located 2 mm below the cemento-enamel junction (CEJ). The teeth were randomly assigned to one of four experimental groups (n = 12). In groups G1 and G2, the distal proximal box was elevated up to the level of the CEJ with composite resin (PBE). No elevation was performed in the remaining two groups (G3, G4). CAD/CAM restorations were fabricated with feldspathic ceramic (Vita Mark II, CER) in groups G1 (PBE-CER) and G3 (CER) or with resin nano-ceramic blocks (Lava Ultimate, LAV) in groups G2 (PBE-LAV) and G4 (LAV). Replicas were taken before and after thermomechanical loading (TML; 1.2 Mio cycles; 49 N; 3,000 thermocycles between 50°C and 5°C). Following TML, load was applied until failure. Fracture analysis was performed under a stereomicroscope (×16). Marginal quality before and after TML (tooth restoration, composite restoration) was evaluated using scanning electron microscopy (×200). RESULTS After TML, lower percentages of continuous margins were observed in groups G1-G3 compared with pre-TML assessments; however, the differences were not statistically significant. For group G4-LAV, the marginal quality after TML was significantly better than in any other group. The highest mean fracture value was recorded for group G4. No significant difference was found for this value between the groups with PBE compared with the groups without PBE, regardless of the material used. The specimens restored with ceramic onlays exhibited fractures that were mainly restricted to the restoration while, in teeth restored with composite onlays, the percentage of catastrophic failures (fractures beyond bone level) was increased. CONCLUSION PBE had no impact on either the marginal integrity or the fracture behavior of root canal-treated mandibular molars restored with feldspathic ceramic onlays. CAD/CAM-fabricated composite onlays were more favorable than ceramic onlays in terms of both marginal quality and fracture resistance, particularly in specimens without PBE. CLINICAL RELEVANCE Composite onlays with or without PBE may be a viable approach for the restoration of root-filled molars with subgingival MOD cavities. AbstractObjectives This study investigated the influence of proximal box elevation (PBE) with composite resin when applied to deep proximal defects in root--filled molars with MOD cavities, which were subsequently restored with CAD/CAM ceramic or composite restorations.

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Novel-design ultra-thin CAD/CAM composite resin and ceramic occlusal veneers for the treatment of severe dental erosion

Cited by 200 publications

References 27 publications

Influence of surrounding wall thickness on the fatigue resistance of molars restored with ceramic inlay

Influence of surrounding wall thickness on the fatigue resistance of molars restored with ceramic inlay

PEEK surface treatment effects on tensile bond strength to veneering resins

Influence of proximal box elevation on the marginal quality and fracture behavior of root-filled molars restored with CAD/CAM ceramic or composite onlays

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