1,721,088 research outputs found
Can a single molar root act as a whole tooth?
Full text link: This clinical case describes the longitudinal outcome of a radisected upper molar root. The palatal root acted as an abutment and was finalized with a double-premolar-shaped metal-resin crown with two rests on the adjacent teeth. Fifteen years later, the root and its crown were still in place, with no pathologic pocket probing depth and lack of inflammation; the tooth was still in function with no signs of periodontal breakdown. This therapeutic option seemed to have been biologically respectful and maintains the possibility to provide future implant therapy
Dispositivo per la decontaminazione di circuiti idrici di ambulatori medici, odontoiatrici ed ospedalieri
No full textIsolation through rubber dam to prevent COVID-19 exposure during flapless trans-crestal sinus lift procedures
No full textIn 2020, a highly infective new pathogen (Sars-CoV-2) spread from China to the whole globe, and became responsible of an acute respiratory syndrome, often asymptomatic but potentially lethal, named COVID-19. Airborne and direct contact contamination are the major infection pathways of Sars-CoV-2 and it has been shown that virus spread can also happen in absence of clinical symptoms. SARS-CoV-2 transmission during dental procedures can happen through inhalation of droplets from infected patients or direct contact with mucous membranes, oral fluids, and contaminated instruments. Both sinus lift and implant surgeries often involve bleeding and exposure to oral fluids, and a rubber dam could be used to reduce direct contact and the amount of potentially infected aerosol. The aim of this short case presentation is to illustrate how the use of a rubber dam could be extremely useful in preventing COVID-19 exposure during flapless trans-crestal sinus lift procedures
APPARATO DI AVANZAMENTO E MISURA E METODO DI RILEVAZIONE PER RILEVARE UNA POSIZIONE MODIFICATA IN AVANZAMENTO DELLA MANDIBOLA
No full textMicrobiological response to periodontal therapy: A retrospective study
Full text linkBackground: Periodontitis is a multifactorial infection caused by a complex of pathogenic bacterial species that induce the destruction of periodontal structures. Objective: The aim of this study is to evaluate the presence and bacterial load of six periodontal pathogens bacteria, measured at initial visit and after osseous surgery in patients affected by chronic periodontitis and treated between 2005 and 2007. Methods: This cohort study was carried out on a sample of 38 consecutive patients affected by severe chronic periodontitis, diagnosed at baseline on the basis of probing depths equal to 6.68 ± 1.47 mm. On each subject, a microbiological test was performed before periodontal initial therapy and after osseous surgery (one year later). Five compromised teeth were chosen for each patient (the same teeth, before and after surgery), for a total of 190 teeth. Real-time PCR based analysis computed total bacterial load of the samples and quantified six periodontal pathogens: Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Fusobacterium nucleatum and Prevotella intermedia. Data collection was made consulting medical charts. Results: Pocket probing depth reduction after surgery was 4.50 ± 1.54 mm (p=0.0001). The mean number of sites with bleeding at baseline was 2.08 ± 1.17 and 0.58 ± 1.00 after surgery (p=0.001). The mean number of sites with suppuration at baseline was 0.26 ± 0.86 and 0 after surgery (p=0.02). Cell count of each pathogen and total cell count were significantly higher at baseline than after surgery. Almost all bacteria presented a mean percentage reduction equal to that of the total count, except for Aa and Pi, which seemed to show a greater resistance. The difference of bacterial load, both before and after surgery, between smokers and non-smokers was not statistically significant (p<0.05). A statistically significant correlation was detected between pocket probing depth variation and bleeding on probing variation before and after the surgery, controlling for age (r=0.6, p=0.001). No significant correlations were observed between pocket probing depth and bacterial loads, except for Pg (r=0.5, p=0.001), Tf (r=0.6, p=0.001) and Td (r=0.4, p=0.02). Conclusions: Reduction of presence and bacterial load of the examined periodontal pathogens bacteria after osseous surgery, along with periodontal pocket reduction, appeared to be essential to achieve and maintain periodontal stability over years
The Inlay Technique With an Allograft Block Used for the Rehabilitation of an Atrophic Posterior Mandible: A Case Report
No full textIntroduction: To the best of the authors’ knowledge, this case report is the first in the literature to describe the reconstruction of a severely atrophic poster mandible using an allograft block in the inlay technique.
Case Presentation: Differently orientated osteotomic cuts were performed in order to coronally elevate the osteotomized bony segment. An allograft block was then shaped and placed between the segment and the basal bone. Only 2 months after the grafting procedure, the allograft seemed to be well integrated and two dental implants were placed.
Conclusion: In this clinical case, after only 2 months, allograft block seemed to be an effective material for the reconstruction of the posterior mandible with the inlay technique
Psychological reactions to COVID-19 and epidemiological aspects of dental practitioners during lockdown in Italy
Full text linkBACKGROUND: Due to droplet production and exposure to saliva and blood, dental practitioners are at high risk of COVID-19 contagion during their routine procedures. The aim of this study was to investigate the behavior of Italian dentists and to analyze their reactions in relation to Sars-CoV-2 pandemic professional restrictive measures.METHODS: An online structured survey composed of 40 questions has been sent to dental practitioners all over Italy to investigate their behavior and to analyze their reactions in relation to Sars-CoV-2 pandemic restrictive measures introduced by the Italian national administrative order of 10 March 2020 (DM-10M20).RESULTS: 1109 dentists replied. To assess concerns and psychological responses the sample was divided into two groups based on the number of cases registered in their work area. In the first group were included all the responders working in the Italian regions that had more than 15.000 confirmed cases of COVID-19 as of April 29, 2020. The second group included responders working in the Italian regions that had less than 15,000 confirmed cases. The 45.2% of the respondents showed minimal anxiety, 34.5% showed mild anxiety, 13.9% showed moderate anxiety, while 6.4% showed a score indicative of a severe level of anxiety.CONCLUSIONS: The COVID-19-related emergency condition had a highly negative impact on dental practices in Italy. Those who completed the survey reported practice closure or reduction during the lockdown, and a high level of concern about the professional future for all dental practitioners. Concerns related to professional activity were accompanied by severe anxiety levels
Endoscopic-assisted non surgical periodontal therapy: radiographic evaluation of infrabony defect response. A pilot study.
No full textThe goal of non surgical therapy is to remove subgingival biofilm and a minimally invasive endoscopic treatment of subgingival areas allows a significant improvement of deposits removal.
The aim of this study is to analyze the radiographic response of infrabony defects after non surgical periodontal therapy performed with a periodontal endoscope.
Twenty-three sites, belonging to 13 patients (7 females and 6 males, mean ± SD = 50±11 years), were analyzed after endoscopic-assisted* non surgical periodontal therapy. All patients were affected by chronic periodontitis, with moderate (probing depth – PD: 5-6 mm) or deep (PD:≥7mm) pockets and vertical infrabony defects affecting single – rooted teeth.
All sites were treated with endoscopic-assisted scaling and root planing (S-RP) and standardized x-rays were taken before and one year after the treatment. Radiographs were scanned and evaluated using an image analyzer.
The following measurements were taken: the distance between interproximal cementoenamel junction (CEJ) and base of the defect (BD), the distance between bone crest (BC) and BD, the angle of the defect and the Infrabony Defect Fill (IDF) (measured as the difference between initial and final vertical distance from CEJ to BD).
Results, one year after the procedure, show a statistically significant (p=0.0001) mean reduction of CEJ-BD and BC-BD distances, respectively 1.13 (0.68-1.59) mm and 0.82 (0.42-1.22) mm, and a statistically significant (p=0.03) mean increase of the defect angle: 6.29 mm (0.67-11.92). Moreover, the mean value of IDF fill was 1.14 ± 0.22 mm, denoting an infrabony defect fill.
Bone remodeling, occurred after non surgical endoscopic-assisted periodontal therapy, led to a partial fill of the defect and an increase of the defect angle, due to a remineralization of the most apical part of the defect. Taking advantage of the regenerative potential present in the area, the vertical defect partially turned into a horizontal defect.
This procedure brings predictable improvements in the radiographic parameters of infrabony defects versus S-RP alone.
Periodontal endoscopic-assisted non surgical therapy achieves a statistically significant decrease of the vertical component of the bony defects and the opening of the defect angle.
This procedure seems to be a reliable treatment for patients with a medical history or other psychological/economical concerns limiting a surgical approach
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