Brandt, Jan, Lauer, Hans-Christoph, Peter, Thorsten, and Brandt, Silvia
The Journal of Prosthetic Dentistry. Oct 2015, Vol. 114 Issue 4, p469, 5 p.
Zirconium, Implants, Artificial, Prosthesis, and Implant dentures
A digital process is presented for an implant-supported single-tooth and a 3-unit fixed dental prosthesis (FDP) with customized abutments and monolithic prosthetic zirconia restorations. The digital impression on the implant level was made with a TRIOS intraoral scanner (3Shape). This process included the fabrication of an implant cast with the fused deposition modeling technique and a 3-dimensional printing process with integrated implant analogs. The process enabled the FDPs to be designed with CAD/CAM on the cast before patient contact. Designing a printed implant cast expands the use of the digital workflow in the dental field.
Journal of Oral Rehabilitation. June 2015, Vol. 42 Issue 6, p467, 14 p.
Implants, Artificial, Prosthesis, Implant dentures, Zirconium oxide, and Zirconium
Byline: M. Le, E. Papia, C. Larsson Keywords: ceramics; dental implants; denture; partial; fixed; dental restoration failure; systematic review; yttria-stabilised tetragonal zirconia Summary The aim was to make an inventory of the current literature on the clinical performance of tooth- or implant-supported zirconia-based FDPs and analyse and discuss any complications. Electronic databases, PubMed.gov, Cochrane Library and Science Direct, were searched for original studies reporting on the clinical performance of tooth- or implant-supported zirconia-based FDPs. The electronic search was complemented by manual searches of the bibliographies of all retrieved full-text articles and reviews, as well as a hand search of the following journals: International Journal of Prosthodontics, Journal of Oral Rehabilitation, International Journal of Oral & Maxillofacial Implants and Clinical Oral Implants Research. The search yielded 4253 titles. Sixty-eight potentially relevant full-text articles were retrieved. After applying pre-established criteria, 27 studies were included. Twenty-three studies reported on tooth-supported and 4 on implant-supported FDPs. Five of the studies were randomised, comparing Y-TZP-based restorations with metal-ceramic or other all-ceramic restorations. Most tooth-supported FDPs were FDPs of 3-5 units, whereas most implant-supported FDPs were full arch. The majority of the studies reported on 3- to 5-year follow-up. Life table analysis revealed cumulative 5-year survival rates of 93ae5% for tooth-supported and 100% for implant-supported FDPs. For tooth-supported FDPs, the most common reasons for failure were veneering material fractures, framework fractures and caries. Cumulative 5-year complication rates were 27ae6% and 30ae5% for tooth- and implant-supported FDPs, respectively. The most common complications were veneering material fractures for tooth- as well as implant-supported FDPs. Loss of retention occurred more frequently in FDPs luted with zinc phosphate or glass-ionomer cement compared to those luted with resin cements. The results suggest that the 5-year survival rate is excellent for implant-supported zirconia-based FDPs, despite the incidence of complications, and acceptable for tooth-supported zirconia-based FDPs. These results are, however, based on a relatively small number of studies, especially for the implant-supported FDPs. The vast majority of the studies are not controlled clinical trials and have limited follow-up. Thus, interpretation of the results should be made with caution. Well-designed studies with large patient groups and long follow-up times are needed before general recommendations for the use of zirconia-based restorations can be provided.
Cheng, Chih-Wen, Chien, Chia-Hui, Chen, Chun-Jung, and Papaspyridakos, Panos
The Journal of Prosthetic Dentistry. June 2013, Vol. 109 Issue 6, p347, 6 p.
Zirconium, Implants, Artificial, Prosthesis, Implant dentures, and Zirconium oxide
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/S0022-3913(13)00109-1 Byline: Chih-Wen Cheng, Chia-Hui Chien, Chun-Jung Chen, Panos Papaspyridakos Author Affiliation: (a) Clinical Instructor, Division of Prosthodontics, Department of Dentistry, Chi Mei Medical Center, Liouying, Tainan, Taiwan (b) Clinical Instructor, Division of Prosthodontics, Department of Dentistry, Chi Mei Medical Center, Liouying, Tainan, Taiwan (c) Clinical Instructor, Division of Periodontics, Department of Dentistry, Chi Mei Medical Center, Liouying, Tainan, Taiwan (d) PhD student, Department of Prosthodontics, National and Kapodistrian University of Athens, School of Dentistry, Athens, Greece
Blatz, Markus B., Bergler, Michael, Holst, Stefan, and Block, Michael S.
Journal of Oral and Maxillofacial Surgery. Nov 2009, Vol. 67 Issue 11, p74, 8 p.
Implant dentures, Implants, Artificial, Prosthesis, College teachers, Practice guidelines (Medicine), Zirconium, Computer-aided design, Zirconium oxide, Alloys, and Zirconium alloys
Clinical success of an endosseous implant to replace a single tooth is not only defined by its survival. Esthetic parameters have become integral aspects in defining success and failure. All-ceramic abutments have started to play a major role in achieving an esthetically successful result. The material itself, however, is not the exclusive determinant for esthetic success. It is the appropriate design and proper handling of the material and the abutment that enables the clinician to achieve esthetic outcomes that were not possible with traditional metal alloys. This article explores the rationale for using zirconia for prosthetic implant components, explains specific material properties, and discusses strategies and guidelines for the design and successful clinical implementation of CAD/CAM-fabricated zirconia implant abutments.
The Journal of Prosthetic Dentistry. June 2009, Vol. 101 Issue 6, p354, 5 p.
Zirconium oxide, Implants, Artificial, Prosthesis, Zirconium, and Implant dentures
This article describes the treatment provided to a patient who presented with a partially edentulous maxillary anterior space exhibiting severe resorption of the residual ridge. Two endosseous implants were placed to retain the prosthesis, which restored the missing teeth. A 1-piece zirconia implant fixed partial denture with individual all-ceramic crowns was used to replace the missing portions of the soft and hard tissues. This clinical report details the treatment of this restorative dilemma. (J Prosthet Dent 2009;101:354-358)
Author(s): Chiung-Fang Wang[sup.1,2], Heng-Li Huang[sup.1], Dan-Jae Lin[sup.3], Yen-Wen Shen[sup.1,2], Lih-Jyh Fuh[sup.1,2] and Jui-Ting Hsu[sup.1] Background Treatments for missing teeth include fixed bridges, removable partial dentures, and dental implants[1-5]. The survival [...] Background Zirconia materials are known for their optimal aesthetics, but they are brittle, and concerns remain about whether their mechanical properties are sufficient for withstanding the forces exerted in the oral cavity. Therefore, this study compared the maximum deformation and failure forces of titanium implants between titanium-alloy and zirconia abutments under oblique compressive forces in the presence of two levels of marginal bone loss. Methods Twenty implants were divided into Groups A and B, with simulated bone losses of 3.0 and 1.5 mm, respectively. Groups A and B were also each divided into two subgroups with five implants each: (1) titanium implants connected to titanium-alloy abutments and (2) titanium implants connected to zirconia abutments. The maximum deformation and failure forces of each sample was determined using a universal testing machine. The data were analyzed using the nonparametric Mann-Whitney test. Results The mean maximum deformation and failure forces obtained the subgroups were as follows: A1 (simulated bone loss of 3.0 mm, titanium-alloy abutment) = 540.6 N and 656.9 N, respectively; A2 (simulated bone loss of 3.0 mm, zirconia abutment) = 531.8 N and 852.7 N; B1 (simulated bone loss of 1.5 mm, titanium-alloy abutment) = 1070.9 N and 1260.2 N; and B2 (simulated bone loss of 1.5 mm, zirconia abutment) = 907.3 N and 1182.8 N. The maximum deformation force differed significantly between Groups B1 and B2 but not between Groups A1 and A2. The failure force did not differ between Groups A1 and A2 or between Groups B1 and B2. The maximum deformation and failure forces differed significantly between Groups A1 and B1 and between Groups A2 and B2. Conclusions Based on this experimental study, the maximum deformation and failure forces are lower for implants with a marginal bone loss of 3.0 mm than of 1.5 mm. Zirconia abutments can withstand physiological occlusal forces applied in the anterior region. Keywords: Abutment, Dental implant, Failure force, Maximum deformation force, Titanium alloy, Zirconia