1,720,984 research outputs found
A successful treatment of implant periapical lesion: surgical re-entry after 12 years from the reconstructive approach
No full textAIM: This poster describes a 12 years follow up case-report of reconstructive bone surgery on Implant Periapical Lesion (IPL).
METHODS: A 49 woman, at 3-month control after #4.6 implant placement, manifested a fistula at the vestibular side of the area. Clinical and radiographic exams led to active IPL diagnosis. The aim was to preserve the entire fixture, eliminating the acute infection at the apical portion of the implant and creating the biological conditions for osseointegration. The surgical-pharmacological treatment was performed in October 2005 at the Department of Periodontology and Implantology of Bologna University. After intrasulcular incision a vestibular full-thickness flap was raised and a careful soft tissue curettage of the defect was carried out. Confirmed the primary stability of the fixture, decontamination of the bone cavity and of the exposed implant portion was performed with a chlorhexidine irrigant. Finally, the area was filled with a particulate allograft added with tetracycline and the flap sutured. Chlorhexidine rinse and antibiotic-analgesic therapy were prescribed.
The healing was uneventful and a complete resolution of the lesion was clinically and radiographically recorded. The minimally invasive approach and the definitive prosthetic finalization led to a full patient satisfaction.
Stability of the result was confirmed for several years until a new periimplantitis scenario manifested. Another surgical approach was consequently planned to treat the periimplantitis.
RESULTS: This surgery allowed a direct observation of the vestibular cortical area confirming a complete resolution of the previous IPL bone lesion.
CONCLUSION: In conclusion this case-report shows that active IPL, even for extensive implant involvement, can be successfully resolved with a “preserving approach”. More clinical confirmations of this observation are anyway demanded
Digital Options for the Rehabilitation of the Atrophic Edentulous Maxilla
No full textObjective:
The aim of this study was to describe fully digital workflows for the Prosthetically Guided Reconstructive Surgery (PGRS) of edentulous patients affected by atrophic maxilla.
Methods:
The preoperative provisional removable full-denture was used as starting point to determine aesthetics parameters, occlusion of the final prosthetic rehabilitation as well as the respective maxillary implant positions using conventional softwares for the diagnosis of available bone and for the design of the full-arch prosthesis. The regenerative option (bone augmentation using customized titanium mesh), or the long implant option (navigated zygomatic implants) were both digitally projected depending on the patient needs. After implants healing, two sets of digital impressions were acquired: set #1 was the digital impression of implant positions; set #2 was the digitalization of the provisional full denture together with the impression of the rear side. The two sets were digitally combined into a single file. The metal framework of the final prosthesis was designed and manufactured using digital hybrid manufacturing technology and clinically evaluated with Sheffield test and radiographs; at the same time a resin prototype was produced for clinical try-in of aesthetic and functional parameters.
Results:
Aesthetic parameters and the occlusion of the provisional removable full-denture were digitally transferred to the provisional and definitive full-arch fixed prosthesis. The digital models were 3D-printed in occlusion to finalize in three steps the full-arch prosthesis.
Conclusions:
The workflows of PGRS allowed realizing the full process of the prosthetic and surgical rehabilitation of edentulous patients with atrophic maxilla using a complete digital CAD-CAM technology.
1: Cordaro L, Amadé DS, Cordaro M. Clinical results of alveolar ridge augmentation with mandibular block bone grafts in partially edentulous patients prior to implant placement. Clin Oral Implants Res. 2002 Feb;13(1):103-11. PubMed PMID: 12005140.
2: Pellegrino G, Lizio G, Corinaldesi G, Marchetti C. Titanium Mesh Technique in Rehabilitation of Totally Edentulous Atrophic Maxillae: A Retrospective Case Series. J Periodontol. 2016 May;87(5):519-28. doi: 10.1902/jop.2016.150432. Epub 2016 Jan 12. PubMed PMID: 26759078.
3: Tuminelli FJ, Walter LR, Neugarten J, Bedrossian E. Immediate loading of zygomatic implants: A systematic review of implant survival, prosthesis survival and potential complications. Eur J Oral Implantol. 2017;10 Suppl 1:79-87. Review. PubMed PMID: 28944370.
4: Ciocca L, Lizio G, Baldissara P, Sambuco A, Scotti R, Corinaldesi G. Prosthetically CAD-CAM-Guided Bone Augmentation of Atrophic Jaws Using Customized Titanium Mesh: Preliminary Results of an Open Prospective Study. J Oral Implantol. 2018 Apr;44(2):131-137. doi: 10.1563/aaid-joi-D-17-00125. Epub 2018 Jan 5. PubMed PMID: 29303418.
5: Ciocca L, Ragazzini S, Fantini M, Corinaldesi G, Scotti R. Work flow for the prosthetic rehabilitation of atrophic patients with a minimal-intervention CAD/CAM approach. J Prosthet Dent. 2015 Jul;114(1):22-6. doi: 10.1016/j.prosdent.2014.11.014. Epub 2015 Apr 7. PubMed PMID: 25862269
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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