Fifteen-year outcome of posterior all-ceramic inlay-retained fixed dental prostheses

Becker, Merlind; Chaar, Mohamed Sad; Garling, Anne; Kern, Matthias

doi:10.1016/j.jdent.2019.07.012

Cited by 18 publications

(29 citation statements)

References 27 publications

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“…favorable optical properties [5,6]. However, they have drawbacks such as brittleness and tendency toward catastrophic failures, which are difficult to repair, and they cause wear to the opposing natural teeth if not appropriately polished [7]. For instance, clinical studies have shown that lithium-disilicate IRFPDs have a low probability of survival (5-year survival rate was 57%, 8-year survival rate decreased dramatically to 38%, and 15-year survival rate was 22%) [3,7]; however, the material has been developed extensively since then, which may influence the significance of these findings.…”

Section: Introductionmentioning

confidence: 99%

Fracture behavior of discontinuous fiber-reinforced composite inlay-retained fixed partial denture before and after fatigue aging

et al. 2023

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To evaluate the fracture behavior of inlay-retained fixed partial dentures (IRFPDs) made of experimental short fiber-reinforced composite (SFRC) computer-aided design/computer-aided manufacturing (CAD/CAM) block before and after cyclic fatigue aging. Methods: Five groups (n=20/group) of three-unit posterior IRFPDs were fabricated. The first and second groups were CAD/CAM fabricated from experimental SFRC blocks or lithium-disilicate (IPS e.max CAD, IVOCLAR) materials, the third group comprised a three-dimensional-printed composite (Temp PRINT, GC), and the fourth and fifth groups comprised conventional laboratory flowable composite (Gradia Plus, GC) and commercial flowable SFRC (everX Flow, GC), respectively. All IRFPDs were luted into a metal jig with adhesive dual-cure resin cement (RelyX Ultimate, 3M ESPE). Half the IRFPDs per group (n=10) were subjected to fatigue aging for 10,000 cycles. The remaining half were statically loaded until fracture without fatigue aging. The load was applied vertically between triangular ridges of the buccal and lingual cusps. The fracture mode was visually examined using optical and scanning electron microscopy (SEM). Data were statistically analyzed using a two-way analysis of variance (ANOVA) followed by Tukey's HSD test. Results: ANOVA revealed that IRFPDs made of experimental SFRC CAD/CAM had the highest (p<0.05) load-bearing capacity before (2624±463 N) and after (2775±297 N) aging among all groups. Cyclic fatigue aging decreased the load-bearing capacity (p>0.05) of all tested prostheses, except for the experimental SFRC CAD/CAM and conventional laboratory composite IRFPDs (p>0.05). SEM images showed the ability of discontinuous short fibers in the experimental SFRC CAD/CAM composite to redirect and hinder crack propagation. Conclusion: CAD/CAM-fabricated IRFPDs made of experimental SFRC blocks showed promising performance in clinical testing in terms of fracture behavior.

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Section: Introductionmentioning

confidence: 99%

Fracture behavior of discontinuous fiber-reinforced composite inlay-retained fixed partial denture before and after fatigue aging

et al. 2023

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“…It is therefore promising that no ceramic defects have occurred in the current study so far, particularly in light of the results of earlier studies on ceramic RBFPDs with a similar design, in which fractures and chippings, leading to restoration failure, occurred on a large scale 32,34 . As such, 67% of IR‐RBFPDs made from lithium‐disilicate fractured over a period of 15 years 32 .…”

Section: Discussionmentioning

confidence: 68%

“…There are several arguments, however, for classifying posterior FRC‐RBFPDs as temporary (medium‐term) restorations: a lack of long‐term data, 30 increasing wear of the restorative materials, and an increase in technical complications after 5 years of incorporation (in particular delamination, chipping, debonding, and complete fractures) 31 . Lithium‐disilicate inlay‐retained (IR) RBFPDs have a low probability of survival (57%, 38%, and 22% after 5, 8, and 15 years, respectively), mainly due to framework fractures and debonding of one or both retainers; as a result, they are not recommended for regular clinical use 32 . Similar results were obtained for IR‐RBFPDs made from veneered zirconia; a high incidence of chipping and debonding resulted in high early complication rates 33 and a 10‐year probability of survival of only 12% 34 .…”

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confidence: 99%

Clinical Performance of Posterior Inlay‐Retained and Wing‐Retained Monolithic Zirconia Resin‐Bonded Fixed Partial Dentures: Stage One Results of a Randomized Controlled Trial

Bömicke

Rathmann

Pilz

et al. 2020

Journal of Prosthodontics

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Purpose To prospectively compare the clinical performance of posterior inlay‐retained and wing‐retained monolithic zirconia fixed partial dentures (FPDs). Materials and methods After simple randomization, 30 participants received either one inlay‐retained (n = 15; mean age: 56.38 ± 12.70 years; 10 men [66.7%]) or one wing‐retained (n = 15; mean age: 45.90 ±13.24 years; 7 men [46.7%]) FPD. The restorations, which predominantly replaced first molars, were fabricated from translucent, 3 mol% yttria‐stabilized zirconia and attached with self‐etching resin cement. Restorations and abutment teeth were clinically followed up for complications one week and 3, 6, and 12 months after cementation. Plaque and gingival scores, probing pocket depths, and attachment levels were recorded for the abutment and contralateral reference teeth both before treatment and during follow‐up examinations. The restorations were also assessed in accordance with FDI World Dental Federation criteria. Statistical analyses were conducted with R (α = 0.05). An adaptive, 2‐stage study design based on the incidence of failure‐free survival in the groups after 12 months (stage 1) was implemented. Predefined decision rules were used to determine whether further recruitment (stage 2) would enable the detection of a statistically significant difference between the restoration designs with sufficient power. Results During 12 months, only one wing retainer debonded which required removal of the FPD. Failure‐free survival was thus 93.3% for wing‐retained and 100% for inlay‐retained FPDs (log‐rank test, p = 0.317). Moderate aftercare resulted in intervention‐free rates of 78.8% and 86.7% for inlay‐retained and wing‐retained restorations, respectively (log‐rank test, p = 0.605). Based on FDI World Dental Federation criteria, all restorations were acceptable at the 12‐month follow‐up (Fisher‐Boschloo test, p = 0.161). Plaque, gingival, and periodontal scores remained practically unchanged from before treatment to the 12‐month follow‐up. Recruitment was stopped after stage 1 because, based on the small difference in the incidence of failure‐free survival in the groups, it was accepted that it would not be possible to recruit the necessary number of participants to show a statistically significant difference between the retainer designs. Conclusions Both inlay‐retained and wing‐retained monolithic zirconia resin‐bonded FPDs performed well for the 12‐month, short‐term follow‐up period.

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“…38,39 The inlay dimensions were selected in accordance with the general principles for all-ceramic inlay preparation; varying the depth of the preparation mimics the clinical condition of variable caries extension which is a factor primarily responsible for the final depth of the cavity. 17,40 The first hypothesis was rejected since the results showed no significant difference in the accuracy of the intraoral scanners as a result of the change of the preparation depth. This might be due to the fact that though the maximum depth of preparation within our samples was 4 mm, it's still well within the focal depth of all the intraoral scanners.…”

Section: Discussionmentioning

confidence: 99%

“…[14][15][16] As for clinical studies, high failure rates were observed with lithium disilicate ceramic or veneered zirconia. [17][18][19] However, monolithic zirconia and high performance polymers showed encouraging results as a viable treatment option with up to 8 years observational period. 11,[20][21][22][23][24] Several designs have been adopted during the fabrication of posterior inlay-retained FPDs.…”

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confidence: 99%

Effect of Different Preparation Depths for an Inlay‐Retained Fixed Partial Denture on the Accuracy of Different Intraoral Scanners: An In Vitro Study

Khaled

Sabet

Ebeid

et al. 2021

Journal of Prosthodontics

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Purpose The aim was to evaluate the effect of different preparation depths for inlay‐retained fixed partial dentures on the accuracy of intraoral scanners. Materials and Methods Tooth preparations for two inlay‐retained fixed partial dentures were done and divided according to depth of the preparation. Group A: 2 mm pulpal floor depth, 3 mm gingival floor depth and Group B: 3 mm pulpal floor depth, 4mm gingival floor depth. The CEREC Omnicam 4.4.4, Omnicam 4.6.2. Trios3 and Medit i500 intraoral scanners were used in this study. Tooth preparations were scanned by each scanner 10 times. The STL files obtained from the intraoral scanners were compared to the reference models (trueness) and within each test group (precision) using a 3D comparison software. Data were then statistically analyzed. Results Regarding trueness, two‐way ANOVA revealed significant differences between the different types of scanners (p < 0.001) (Omnicam 4.4.4: 65.09 ± 2.87 Omnicam 4.6.1: 52.73 ± 3.31 Medit i500: 58.45 ± 2.63 Trios 3: 41.79 ± 4.42). Preparation depth had no significant influence on the trueness (p = 0.083). For precision two‐way ANOVA revealed significant differences between the different types of scanners (p < 0.001). Preparation depth had no significant influence on the precision (p = 0.111). Statistically significant interactions were found between the different variables. Conclusions The depth of preparation did not have an influence on the accuracy of different scanners. However, the type of scanner influenced the accuracy of digital impressions with Trios3 showing the highest accuracy.

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Fifteen-year outcome of posterior all-ceramic inlay-retained fixed dental prostheses

Cited by 18 publications

References 27 publications

Fracture behavior of discontinuous fiber-reinforced composite inlay-retained fixed partial denture before and after fatigue aging

Fracture behavior of discontinuous fiber-reinforced composite inlay-retained fixed partial denture before and after fatigue aging

Clinical Performance of Posterior Inlay‐Retained and Wing‐Retained Monolithic Zirconia Resin‐Bonded Fixed Partial Dentures: Stage One Results of a Randomized Controlled Trial

Effect of Different Preparation Depths for an Inlay‐Retained Fixed Partial Denture on the Accuracy of Different Intraoral Scanners: An In Vitro Study

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