1,720,971 research outputs found
Immediate Implant Placement in Infected Sites: A Case Series
No full textBACKGROUND:
Immediate implant placement has several advantages, such a reduction in the number of surgical treatments and reduction of the time between tooth extraction and the placement of the definitive prosthesis. However, there are still some situations which could jeopardize the success of the aforesaid therapy, such as the presence of an infection caused by periodontal disease or peri-apical lesions. The aim of this study was to evaluate the clinical success of implants placed in fresh extraction sockets which showed clinical signs of periodontal disease.
MATERIALS AND METHODS:
Twenty patients (13 males and 7 females) aged 24 to 65 were included in this study. After the initial examination and the treatment planning, all of the patients selected for the study underwent the periodontal treatment deemed necessary to facilitate wound healing. All the 20 teeth were extracted due to an infection. The second stage surgery was performed 4 months after the initial procedure. The following clinical parameters were evaluated for each patient at the time of implant placement and at the end of the 12 month follow-up period: Attachment level (AL), presence or absence of mobility, presence or absence of pain, presence or absence of suppuration. The bone level was measured as the distance from the implant shoulder to the first bone implant contact (Distance Bone Implant) (DIB) by periapical radiographs. The stability and health of the soft tissue was clinically evaluated by means of the plaque score.
RESULTS:
The healing period was uneventful for all the patients. All the implants were osseointegrated. At the end of the 12 month follow-up period, patients were asymptomatic and showed no signs of infection or bleeding when probed. The mean attachment level (AL) at the mid-buccal location per implant was 0.8 mm at the baseline and 0.9 mm at the end of the follow-up. The mean width of KM measured at the mid-buccal location per implant at the baseline and 1-year visits was 3.7+\-0.4 mm and 3.3+\-0.5 mm respectively. The mean Attachment level measured at the mid-buccal location per implant was 0.8 mm at the baseline and 0.9 mm at the end of the follow-up. The pariapical radiographs, obtained in a standardized manner, revealed a mean increase of 1 mm in the DIB value. At the 12-month-follow-up, the presence of plaque was observed in 44 of the 80 sites analyzed.
CONCLUSIONS:
On the basis of this study implants placed in fresh extraction sockets - which were affected by an infection- may be a valid operative technique, which leads to predictable results, if adequate pre- and postoperative care is taken
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
Esthetic integration between ceramic veneers and composite restorations: a case report
Full text linkThe tooth structure preservation is the best way to postpone more invasive therapies. Especially in young patients more conservative techniques should be applied.
Bonded porcelain veneers and even more the direct composite restorations, are the two therapeutic procedures that require the fewer sacrifice of dental tissue, finalized to the optimal recovery of aesthetic and functional outcome.
Although the two techniques require different methods and materials, is possible to achieve a correct integration of both the methods by some technical and procedural measures. In the presented case is planned a rehabilitation of the four upper incisors by ceramic veneers and direct composite restorations.
Care is taken for the surface treatment of ceramic restorations, with the objective of achieving integration, not only between natural teeth and restorations, but also between the different materials in use.
The purpose of this article is to show how a proper design of the treatment plan leads to obtain predictable results with both direct and indirect techniques
Survival of post-treatment canine-to-canine lingual retainers with fiber-reinforced composite resin: a retrospective study
Full text linkThe aim of the study is to evaluate the long term
results of ribbond retainer after orthodontic treatment. One hundred and thirty patients who were orthodontically treated satisfied the inclusion criteria of having received a semipermanent retention were treated with FRC lingual retainers (Ribbond®). It was performed a follow up evaluation after 2 years average from the retainer application and any complication or failure was recorded.
Data from 119 remaining patients that met the inclusion criteria were analyzed and no instances of loosening were observed. It may be concluded that orthodontic
canine-to-canine FRC retainers provide aneffective means of retaining realigned anterior teeth for at least two years
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
Complications in surgical removal of impacted mandibular third molars in relation to flap design: clinical and statistical evaluations
No full textThe extraction of an impacted mandibular third molar may result in periodontal complications on the distal surface of the adjacent second molar. The purpose of this study was to compare the influence of three full-thickness flaps on the periodontal healing of the adjacent second molar after extraction of impacted mandibular third molars
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
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