1,721,367 research outputs found
Why is there a lack of evidence regarding errors and complications in periodontal and implant therapy?
No full textThe occurrence of errors, complications, and adverse effects may occur as a consequence of single or multiple events related to the clinician and/or patient. Apparently, the amount of dental literature on these undesirable outcomes has not been as prolific as that obtained for conventional primary periodontal outcome measures. This review explores the potential reasons for the lack of studies reporting on errors and complications in periodontal and implant therapy, as well as other noteworthy methodological aspects, to enlighten their impact on the selection of the best (or most appropriate) “gold standard” periodontal/implant-related treatment options, and on the overall decision-making process. The following points were addressed: (a) the importance of reporting errors and complications in clinical research; (b) the adequate reporting of errors and complications in periodontology and dental implantology; and (c) efficacy trials vs effectiveness studies and their impact on the assessment and report of periodontal and implant treatment-related risks and complications
A novel approach to minimizing gingival recession in the treatment of vertical bony defects.
No full textLong-term effect on tooth vitality of regenerative therapy in deep periodontal bony defects: a retrospective study
No full textOver the last few decades, many authors have investigated the effect of periodontal disease and treatment on pulpal status with controversial results. This study was conducted to verify whether periodontal disease in a deep intrabony defect and complex therapy, including aggressive root planing such as in periodontal regeneration, have an influence on tooth vitality. One hundred thirty-seven patients who fulfilled the requirements were included. The collected data did not support the need for "preventive" root canal treatment in severely compromised teeth that are planned to undergo periodontal regenerative surgery. © 2013 by Quintessence Publishing Co Inc
Leadless technology: A new paradigm for cardiac pacing?
No full textLeadless pacemaker (LP) technology was recently developed and introduced for clinical purpose as an alternative to traditional systems in order to reduce leads and pocket-related complications. Currently, two self-contained right ventricular pacemakers implanted by using a femoral percutaneous approach have been developed and initial results seem promising. Although the clinical use is still limited to the right ventricular pacing, the LP currently represents a valid and alternative solution in several settings, when the standard pacemaker cannot be used or its use is associated with higher risk of complications. Implementation of particular pacing algorithms in the near future will allow for a VDD pacing mode with only a single ventricular component, whereas the next evolution of technology will lead to develop multicomponent, communicating leadless systems capable to perform a dual-chamber pacing or even a cardiac resynchronization. The management after battery depletion is still controversial and experience on retrievability is anecdotic. Long term data from registry are necessary to reinforce the reliability of these systems in the real life and randomized trials comparing LPs with traditional pacemaker will be essential to better understand if the LP can become a new paradigm in cardiac pacing
Porcine-derived acellular dermal matrix for buccal soft tissue augmentation at single implant sites: A 1-year follow-up case series
No full textSoft tissue augmentation procedures are crucial to obtain a successful outcome in implant therapy. The aim of this case series was to describe the 1-year clinical outcomes of a porcine-derived acellular dermal matrix for buccal mucosal thickness augmentation at osseointegrated single implants with facial peri-implant soft tissue deficiencies. Ten patients were included and treated with a prosthetic and surgical approach that combined a coronally advanced flap and a dermal matrix. Results showed the possibility to obtain an increase in buccal soft tissue thickness of 1.2 ± 0.18 mm at single implant sites in the esthetic area
Long term effect on tooth vitality of regenerative therapy in deep periodontal bony defects: A retrospective study
No full textIn-vitro comparison of toothbrush bristles penetration into the peri-implant sulcus
No full textBackground: Implant-prosthetic reconstructions present anatomical and structural characteristics different from the dento-periodontal condition. These differences can lead to a problematic hygienic access by toothbrush bristles and a consequently reduced biofilm removal.
Aim/Hypothesis: The aim of this preclinical study was to compare the ability of the conical and cylindrical bristles to penetrate the peri-implant sulcus.
Material and Methods: A mandibular dentition was reproduced using a plaster model: the gingival component was recreated in silicone and a glass cylinder was positioned simulating a 4 mm diameter implant. The penetration of the bristles during brushing was recorded by using an optical fiber placed inside the cylinder. The Bass Technique was performed in a humid environment from the vestibular side. This brushing motion is described as a vibratory movement of the bristles oriented at 45° respect to the long axis of the tooth into the sulcus. The protocol included 5 toothbrushes per group and 10 tests per toothbrush, for a total of 50 assessments for each of the two groups. Each test lasted 1 minute with controlled pressure of approximately 350gr and a stroke length of 25 mm. Five degrees of penetration were identified: grade 0 (<2 mm), grade 1 (2–3 mm), grade 2 (3–4 mm), grade 3 (4–5 mm) and grade 4 (5–8 mm). The highest value was collected for each test.
Results: The conical bristles showed 8 times greater efficacy (P = 0.001) than the cylindrical bristles (multilevel analysis). The percentage of tests reaching depths ≥3 mm was 86% for conical group and 28% for the cylindrical group.
Conclusion and Clinical implications: This preclinical study shows a clear and superior penetration capacity of the conical bristles compared to traditional cylindrical ones. Further studies are required to investigate the correlation between penetrative capacity and cleaning efficacy in implant conditions. If a greater penetrative capacity is correlated with a greater cleaning efficacy, then these newly designed bristles would be preferable
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
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