1,720,960 research outputs found
The use of a chitosan-derived hemostatic agent for postextraction bleeding control in patients on antiplatelet treatment
No full textThe current approach for tooth extraction in patients receiving antiplatelet treatment requires the use of local hemostatic agents without previous thromboembolic treatment interruption. The aim of the present study was to evaluate the effectiveness of an extra-alveolar hemostatic agent, the HemCon Dental Dressing (HDD), in controlling postsurgical bleeding
Prevention of lingual nerve injury in third molar surgery: literature review
No full textTo identify any factors that could aid the surgeon in preventing or minimizing the risk of lingual nerve injury during third molar surgery
The central odontogenic fibroma: how difficult can be making a preliminary diagnosis
Full text linkCentral odontogenic fibroma (COF) is a rare benign odontogenic tumor derived from the dental ectomesenchymal
tissues. A 16-year-old Caucasian female patient was referred by her dentist for a radiolucent asymptomatic area
associated with the crown of the impacted lower right third molar. A preliminary diagnosis of a follicular cyst
was supposed. The lesion was surgically removed under general anesthesia together with the impacted tooth. The
microscopic diagnosis of the excised tissue revealed an odontogenic fibroma. No clinical or radiographic signs of
recurrence were found five years after surgical excision. Despite the various differential diagnoses of homogeneous
unilocular and well delimited radiolucencies of the jaws, enucleation with peripheral curettage, without any other
pre-operative imaging exams or biopsies, can be considered as the treatment of choice
Accuracy of cone-beam computed tomography in defining spatial relationships between third molar roots and inferior alveolar nerve
Full text linkObjective: Cone-beam computed tomography (CBCT) has been proposed in surgical planning of lower third molar extraction.
The aim of the present study was to assess the reliability of CBCT in defining third molar root morphology and its spatial
relationships with the inferior alveolar nerve (IAN). Materials and Methods: Intraoperative and radiographic variables of
74 lower third molars were retrospectively analyzed. Intraoperative variables included IAN exposure, number of roots, root
morphology of extracted third molars, and presence/absence of IAN impression on the root surface. Radiographic variables
included presence/absence of the cortex separating IAN from the third molar roots on CBCT examination, number of roots and
root morphology on both orthopantomography (OPG) and CBCT. The statistical association between variables was evaluated
using the Fisher’s exact test. Results: In all cases of intraoperative IAN exposure, the cortex appeared discontinuous on
CBCT images. All cases, in which the cortical bone was continuous on CBCT images, showed no association with nerve
exposure. In all cases in which nerve impression was identified on the root surface, the IAN cortex showed interruptions on
CBCT images. No nerve impression was identified in any of the cases, in which the cortex appeared continuous on CBCT
images. CBCT also highlighted accessory roots and apical anomalies/curvatures, not visible on the OPG. Conclusions: CBCT
seems to provide reliable and accurate information about the third molar root morphology and its relationship with the IAN
The effectiveness of a new method using an extra-alveolar hemostatic agent after dental extractions in older patients on oral anticoagulation treatment: an intrapatient study
No full textObjective. The present study aimed to evaluate the effectiveness of a new adhesive agent, HemCon® Dental Dressing (HDD), in patients receiving oral anticoagulant treatment (OAT), undergoing non-surgical tooth extractions, without interruption or reduction of OAT, compared to that of a common local haemostatic agent. Study design. Twenty patients on OAT with an International Normalized Ratio (INR) ranging between 1.6 and 3.5 were recruited. In the same session each patient was subjected to the extraction of two teeth: in the test site the HDD was applied, while in the control site a common haemostatic sponge (CollaPlug, Zimmer Dental®) was used. Results. The mean application time was significantly lower in the test group than in the control group and this difference is statistically significant. The mean post-operative pain was significantly lower in the test group than in the control group the morning after surgery and at the time of suture removal. Post-extraction socket healing was significantly better in the test group than in the control one. Conclusions. Tooth extraction in OAT patients with an INR lower than 3.5 is a safe procedure without OA regimen discontinuation. The HDD seems to reduce post-operative side effects and obtain a rapid and soft tissue healing
Fibrolipoma of the oral cavity: treatment choice in a case with an unusual location
Full text linkFibro-lipoma has been infrequently found in the oral cavity. Clinical and histological features of an unusual case located alongside the lingual cortical of the
mandible are reported. A particular surgical approach was used with an intrasulcular incision, since it allowed best access to the pathological tissue, optimal flap repositioning and a lower risk of post-surgical wound dehiscence
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
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