scholarly journals Zirconia implants. What are the basics behind this new implant material? Are custom made implants ready for clinical use?

2017 ◽  
Vol 28 ◽  
pp. 41-41
2020 ◽  
Vol 7 (4) ◽  
pp. 344-351
Author(s):  
Ralf-Joachim Kohal ◽  
David K. Dennison

Abstract Purpose of Review The goal of the present review is to update the reader on the scientific background of zirconia ceramic implants. Clinical investigations using zirconia ceramic implants over the last couple of years have brought up some new developments and questions. Can we be confident in placing zirconia ceramic implants given the recently published data? Is there a difference in the application of one- and two-piece implants? Recent Findings Systematic reviews on preclinical investigations of zirconia implants revealed that one-piece zirconia implants (> 4 mm) are sufficiently stable for clinical use. The same is true for some clinically available two-piece implant systems. Osseointegration and soft tissue integration are, according to the reviews, similar between titanium and zirconia implants with similar surface topographies. Regarding the clinical outcome, a meta-review exists evaluating systematic reviews. The findings of the systematic reviews and the meta-review are that there are good short-term clinical results for one-piece zirconia implants. However, the data for two-piece implants is not robust. Summary In certain applications (single tooth restorations and small bridges), the results of zirconia implants are comparable with titanium implants in short-term studies. Some mid-term investigations support the short-term results. However, according to the current scientific data available, zirconia implants cannot yet be considered an alternative to titanium implants because there are many areas where there is a lack of clinical studies on zirconia implants. Currently, they are an addendum to the titanium implant armamentarium for situations where they are useful (patient request, known hypersensitivity to titanium, or questions of esthetics when titanium might appear inappropriate for a certain situation/condition), but long-term studies are needed. Without a doubt, there is a need for two-piece zirconia implants, but limited research exists to support their clinical use at the moment.


2018 ◽  
Vol 106 (8) ◽  
pp. 2888-2900 ◽  
Author(s):  
Miguel Pessanha-Andrade ◽  
Mariane B. Sordi ◽  
Bruno Henriques ◽  
Filipe S. Silva ◽  
Wim Teughels ◽  
...  

2013 ◽  
Vol 14 (6) ◽  
pp. 1049-1053
Author(s):  
Gülsen Can ◽  
Baransel Özmumcu ◽  
Pinar Altinci

ABSTRACT Aim To investigate the importance of attachment types on the retention loss of extracoronal attachment-retained removable partial dentures depending on the usage period. Materials and methods In order to observe the retention loss of 5 different attachments (OT Strategy, OT Strategy-metal protected, Vario-stud-snap and Vario-soft 3 and ERA-RV) over time, attachment-retained partial dentures representing Kennedy II mod. I case were placed in a custom-made, retention test machine. For each minute, eight separating and joining movements were performed and retention values (Newton) of the attachments were recorded by computer. The retention tests implemented in 540,1080 and 2160 cycles. The data were evaluated statistically according to the two-way ANOVA and Tukey parametrical tests. Results The slide type attachment providing the best retention force was observed to be the most worn out by this process (p < 0.01) while the ball type attachments, which typically have the lesser retention force, showed less retention loss (p < 0.01). Conclusion It can be concluded that the retention attributes of the attachment-retained dentures were affected by the specific type of precision attachment as well as the usage period. Clinical significance Precision attachments with ball-type plastic matrices may be recommended for the clinical use due to their retention stability over time. How to cite this article Can G, Özmumcu B, Altinci P. In vitro Retention Loss of Attachment-retained Removable Partial Denture. J Contemp Dent Pract 2013;14(6):1049-1053.


1980 ◽  
Vol 9 (4) ◽  
pp. 201-207 ◽  
Author(s):  
M Semlitsch

Loosening of prosthetic components in the bone is a problem that has not been fully explored as yet. When loosening has occurred, the metallic anchorage stem may become overloaded and in extreme cases it may ultimately lead to stem fracture if the fatigue limit of the metallic material is exceeded. In order to preclude the possibility of these undesirable fatigue fractures of loosened prosthesis stems requiring re-operations, the Sulzer research laboratories have developed wrought alloys of extremely high strength and corrosion resistance such as Protasul-10.† The chemical composition, structure, mechanical properties, corrosion resistance and present state of the art of this implant material, which has been in clinical use since 1971, are specified in national and international standards.


2013 ◽  
Vol 39 (2) ◽  
pp. 225-233 ◽  
Author(s):  
K. M. Regish ◽  
Deeksha Sharma ◽  
D. R. Prithviraj

Owing to its excellent biomechanical characteristics, biocompatibility, and bright tooth-like color, zirconia has the potential to become a substitute for titanium as dental implant material and to be successfully used as root-analogue implants by reproducing the contours of the extracted tooth. This article presents an overview of the technique of using root analogue zirconia dental implants as an immediate implantation material. These implants are replicas of the extracted tooth and therefore truly anatomically correct and socket friendly.


2011 ◽  
Vol 37 (3) ◽  
pp. 367-376 ◽  
Author(s):  
Zeynep Özkurt ◽  
Ender Kazazoğlu

Abstract Titanium and titanium alloys are widely used for fabrication of dental implants. Because of potential immunologic and possible esthetic compromises with titanium implants, novel implant technologies are being developed. However, these novel technologies must maintain the characteristics that provide titanium implants with their high success rates. Zirconia implants were introduced into dental implantology as an alternative to titanium implants. Zirconia seems to be a suitable implant material because of its toothlike color, mechanical properties, biocompatibility, and low plaque affinity. The aim of this study is to review clinical and research articles conducted on zirconia dental implants, compare them with titanium dental implants, and provide information on zirconia dental implant osseointegration and mechanical strength. Zirconia dental implants have the potential to become alternative dental implants to titanium dental implants, but they are not yet in routine clinical use.


2020 ◽  
Vol 5 (3) ◽  
pp. 622-636
Author(s):  
John Heilmann ◽  
Alexander Tucci ◽  
Elena Plante ◽  
Jon F. Miller

Purpose The goal of this clinical focus article is to illustrate how speech-language pathologists can document the functional language of school-age children using language sample analysis (LSA). Advances in computer hardware and software are detailed making LSA more accessible for clinical use. Method This clinical focus article illustrates how documenting school-age student's communicative functioning is central to comprehensive assessment and how using LSA can meet multiple needs within this assessment. LSA can document students' meaningful participation in their daily life through assessment of their language used during everyday tasks. The many advances in computerized LSA are detailed with a primary focus on the Systematic Analysis of Language Transcripts (Miller & Iglesias, 2019). The LSA process is reviewed detailing the steps necessary for computers to calculate word, morpheme, utterance, and discourse features of functional language. Conclusion These advances in computer technology and software development have made LSA clinically feasible through standardized elicitation and transcription methods that improve accuracy and repeatability. In addition to improved accuracy, validity, and reliability of LSA, databases of typical speakers to document status and automated report writing more than justify the time required. Software now provides many innovations that make LSA simpler and more accessible for clinical use. Supplemental Material https://doi.org/10.23641/asha.12456719


Author(s):  
Nkiruka Arene ◽  
Argye E. Hillis

Abstract The syndrome of unilateral neglect, typified by a lateralized attention bias and neglect of contralateral space, is an important cause of morbidity and disability after a stroke. In this review, we discuss the challenges that face researchers attempting to elucidate the mechanisms and effectiveness of rehabilitation treatments. The neglect syndrome is a heterogeneous disorder, and it is not clear which of its symptoms cause ongoing disability. We review current methods of neglect assessment and propose logical approaches to selecting treatments, while acknowledging that further study is still needed before some of these approaches can be translated into routine clinical use. We conclude with systems-level suggestions for hypothesis development that would hopefully form a sound theoretical basis for future approaches to the assessment and treatment of neglect.


1951 ◽  
Vol 35 (4) ◽  
pp. 1113-1127
Author(s):  
Cliffqrd F. Gastineau ◽  
Belding H. Scribner
Keyword(s):  

JAMA ◽  
1965 ◽  
Vol 194 (2) ◽  
pp. 149-151 ◽  
Author(s):  
R. B. Berggren
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document