EAO‐256 / OC‐BR‐008 | Stability of two‐piece zirconia implants with zirconia abutments – a study in the chewing simulator

The objective of this study was to evaluate the fracture load and retention force of different bonding systems while restoring one-piece zirconia implants with a novel cementation approach using a mesostructure. Polymer-infiltrated ceramic mesostructures (n = 112) were therefore designed as caps on the implant abutment, and a molar feldspathic ceramic crown was constructed on top of it as a suprastructure. For cementation, different bonding systems were used. Fracture load and retention force were measured immediately after storage in water at 37 °C for 24 h (n = 8) as well as after artificial aging in a chewing simulator and subsequent thermal cycling (n = 8). Combined restorations showed higher fracture load compared to monolithic restorations of polymer-infiltrated ceramic (n = 8) or feldspathic ceramic (n = 8) identical in shape. However, the fracture load of the combined restorations was significantly affected by aging, independent of the primers and cements used. Restorations cemented with primers containing methyl methacrylate and 10-methacryloyloxydecyl dihydrogen phosphate exhibited the highest retention force values. Aging did not affect the retention force significantly. Similar fracture load values can be expected from combination restorations when compared with monolithic crowns.

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Two‐piece Zirconia Implants Supporting All‐Ceramic Crowns: Six‐Years Results of a Prospective Cohort Study

Clinical Oral Implants Research ◽

10.1111/clr.13734 ◽

2021 ◽

Author(s):

Norbert Cionca ◽

Dena Hashim ◽

Andrea Mombelli

Keyword(s):

Cohort Study ◽

Prospective Cohort Study ◽

Prospective Cohort ◽

All Ceramic ◽

Ceramic Crowns ◽

Zirconia Implants

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Artefacts at different distances from titanium and zirconia implants in cone-beam computed tomography: effect of tube current and metal artefact reduction

Clinical Oral Investigations ◽

10.1007/s00784-021-03821-y ◽

2021 ◽

Author(s):

Arthur Xavier Maseti Mancini ◽

Matheus Urias Cruz Santos ◽

Hugo Gaêta-Araujo ◽

Camila Tirapelli ◽

Ruben Pauwels ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Metal Artefact Reduction ◽

Tube Current ◽

Metal Artefact ◽

Artefact Reduction ◽

Zirconia Implants

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Single tooth restoration in the maxillary esthetic zone using a one-piece ceramic implant with 1 year of follow-up: case series

International Journal of Implant Dentistry ◽

10.1186/s40729-021-00308-z ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Miren Vilor-Fernández ◽

Ana-María García-De-La-Fuente ◽

Xabier Marichalar-Mendia ◽

Ruth Estefanía-Fresco ◽

Luis-Antonio Aguirre-Zorzano

Keyword(s):

Case Series ◽

Biological Properties ◽

Titanium Implants ◽

Plaque Index ◽

Marginal Bone Loss ◽

Bleeding On Probing ◽

Probing Depth ◽

Zirconia Implants ◽

Ceramic Implant

Abstract Background Oral implants have helped clinicians to improve the quality of life for many patients. The material of choice for dental implants currently remains titanium type IV, whose mechanical and biological properties have been proven throughout the history of implantology. Yet, this material is not exempt from complications. For these reasons, ceramic alternatives to titanium have emerged. Thus, the purpose of this study is to evaluate peri-implant hard and soft tissue stability with the use of a one-piece ceramic implant (Straumann® PURE Ceramic Implant) during 1 year of follow-up. Study design One-piece all-ceramic zirconia (ZrO2) implants were placed to replace single missing teeth in the esthetic zone. Six to 8 weeks after the procedure, the definitive prosthesis was fabricated. At the time of prosthesis, placement (T0) photographs and periapical radiographs were taken, and the following clinical parameters were recorded: probing depth (PD), plaque index (PI), bleeding on probing (BOP), suppuration on probing (SOP), distance from gingival margin to incisal edge (GM-IE), and Jemt papilla index (JPI). Follow-up appointments were scheduled at 4 (T4), 8 (T8), and 12 (T12) months, when the same parameters were recorded. In addition, plaque control was reinforced and prophylaxis was carried out. In this last appointment, a final periapical radiograph was taken to assess marginal bone loss. Results A total of 32 zirconia implants were placed in 28 patients (16 women and 12 men, aged between 34 and 67 years). The survival and success rate were 96.9%. The increase in probing depth from baseline to 12 months was 0.78 mm. Assessments of plaque index and bleeding on probing showed a slight increase throughout the study. Conclusions The results obtained with the Straumann® PURE Ceramic implants show them to exhibit very good clinical behavior. The survival rate of the implants of our pilot study was 96.9%. For these reasons, we can say that zirconia implants could be an alternative to titanium implants in the esthetic zone.

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