1,721,010 research outputs found
A simple method to identify implant sites in totally edentulous arches: a pilot study with thermo-printed templates used with cone beam computed tomography
No full textBackground: All dental implants must be placed following radiological, clinical and aesthetic indications in compliance with prosthetic principles avoiding iatrogenic damage to patients. In implantology, among the key choices, to obtain predictable results, it is essential to establish (by cone beam computed tomography [CBCT]) the sites where to insert the implants; these sites must be identified, during the surgical phase, in the oral cavity. Surgical guides represent a valid aid especially in complex cases that require multiple implants. For some clinical conditions, expert operators choose the free hand technique during which identifying the chosen implant sites on CBCT in the oral cavity is more difficult. Methods: This experimental study is based on the use of thermo-molded mask as an alternative to surgical guides when the freehand technique is adopted in totally edentulous patients. These innovative masks, containing radiopaque references, are initially worn by patients during the execution of the CBCT, and later during surgery to identify the implant sites in the oral cavity. Results: The procedure described proved to be very useful and able to increase the precision of the freehand technique even if it does not provide information on the inclination of the implants. The metal references help clinical identification of the implant site. Conclusions: Our thermo-molded masks, in particular clinical conditions, could represent a valid and economical alternative to the classic surgical guide. The described procedure does not increase costs for the patient and significantly increases the precision in inserting the implants during free-hand techniques
Odontoiatria digitale: aspetti clinici, etici e medico-legali nell’utilizzo delle nuove tecnologie
No full textOBJECTIVES
The digital approach has revolution
ized the dental sector, offering new
diagnostic and therapeutic possibili
ties, but it has also raised new deon
tological, bioethical, and medico-le
gal issues. The aim of this article is
to examine the relationship between
digital technology and clinical dental
practice, highlighting the new impli
cations that have emerged with dig
ital approaches, particularly in rela
tion to the use of intraoral scanners
and artificial intelligence. The dis
cussion includes the new responsi
bilities of professionals in managing
patients’ sensitive data, obtaining
adequate informed consent for digi
tal procedures, and ensuring and
improving the quality of care. Chal
lenges related to transparency and
interpretability of data are examined
to ensure safe and ethically respon
sible dental practice, emphasizing
the concept that modifying proaches to the medical profession
does not mean altering its funda
mental values.
MATERIALS AND METHODS
A literature review was conducted
using textbooks and articles from
four digital databases: Research
Gate, PubMed, Scopus and Google
Scholar. Additionally, for the purpose
of drafting this article, the recent
Legislative Resolution of the Europe
an Parliament on Artificial Intelli
gence dated March 13, 2024, was
reviewed. Only articles published
from 2014 onwards were consid
ered relevant. Three operators ana
lyzed and selected the extracted ar
ticles. Short communications, letters
to the editors, and articles published
before 2014 were excluded.
DISCUSSION
The adoption of digital technolo
gies in dentistry has led to numerous advantages, including in
creased accuracy and precision
in clinical procedures, improved
workflow efficiency, and more ef
fective communication between
dentists and patients. However, the
implementation of these technolo
gies also entails ethical and medi
co-legal challenges, such as the
need to ensure patient data securi
ty and compliance with current
regulations. Furthermore, it is cru
cial to consider the economic im
pact of new technologies and the
need for continuous training for
professionals in the field.
CONCLUSIONS
Digital dentistry represents a sig
nificant advancement in dentistry,
improving the quality of care and
patient experience. Despite the
challenges associated with inte
grating new technologies, the
benefits in terms of precision, effi ciency, and communication are
evident. It is essential to address
ethical and medico-legal issues to
ensure the responsible and safe
use of these innovations, while
promoting ongoing professional
development to maximize the ad
vantages offered by technological
innovations in dentistry.
CLINICAL SIGNIFICANCE
In digital dentistry, it is essential to
adopt rigorous clinical, ethical,
and medico-legal protocols, in or
der to ensure the security of sen
sitive data, the correct use of digi
tal technologies and transparency
towards patients
Evaluation of marginal leakage after mechanical fatigue cycling of composite inlays luted with different cements
No full textThis in vitro study evaluated the marginal microleakage of composite inlays luted with 3 different cement systems. The null hypothesis was that the luting materials would not influence dye penetration, showing the same degree of microleakage. Thirty-six sound molars were selected, mesio-occlusodistal cavities were prepared, and the teeth were randomly divided into 3 groups (n = 12). Composite resin inlay restorations were made and cemented using a dual-curing resin cement (Calibra), a light-curing flowable composite (Charisma Flow), or a self-adhesive resin cement (RelyX Unicem). The restored teeth were subjected to fatigue cycles and immersed in 0.5% basic fuchsin dye for 24 hours. Two orthogonal cuts were made to enable evaluation of dye penetration at the cervical and occlusal margins. The sections were evaluated with a 4-point scale ranging from 0 (no penetration) to 3 (penetration up to the cavity floor [occlusal margins] or axial wall [cervical margins]). The Calibra and Charisma Flow groups showed greater microleakage, notably at the cervical margins, whereas RelyX Unicem specimens showed the least dye penetration. Significant differences were found between the Calibra and Charisma Flow groups and between the Charisma Flow and RelyX Unicem groups (P < 0.05). No statistically significant differences were detected between the Calibra and RelyX Unicem groups. The microleakage associated with the flowable composite was significantly greater than that associated with both resin cements, results that discourage its use for luting of Class II composite inlays
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
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