Clinical and Radiographic Outcomes of Implants with Two Different Collar Surfaces in Treated Periodontitis Patients: A 10-Year Retrospective Study.

This retrospective study compares clinical and radiographic results of implants with and without a laser-microtextured collar placed in patients with a past history of periodontitis after 10 years of follow-up. A total of 57 implants (29 implants with laser-microtextured collar, 28 implants with a smooth collar) were placed in 35 patients. After 10 years of follow up, the survival rates (SRs) were 87.9% and 84.8% for implants with and without a laser-microtextured collar, respectively. No statistically significant differences (P > .05) were found between groups in terms of full-mouth plaque and bleeding scores. However, a statistically significant difference (P < .05) was recorded in terms of probing depth (PD) and marginal bone loss (mBL). Within the limitations of this study, implants with a laser-microtextured collar and implants with a smooth collar placed in patients with a past history of periodontitis yielded no statistically significant differences in SRs after 10 years of follow-up. However, implants with a laser-microtextured collar showed lower PD and mBL compared to implants with a smooth collar.

Clinical Outcomes of Socket Preservation Using Bovine-Derived Xenograft Collagen and Collagen Membrane Post-Tooth Extraction: A 6-Month Randomized Controlled Clinical Trial.

The aim of this study was to evaluate the clinical remodeling of the alveolar socket following the application of bovine-derived xenograft collagen and collagen membrane compared to natural spontaneous healing during the first 6 months following tooth extraction. A total of 20 patients with 20 fresh alveolar sockets were randomly allocated into a test or control group. After a 6-month follow-up period, surgical reentry was performed and implants were placed. Significant statistical differences were recorded in terms of vertical and horizontal bone changes between the test and control groups. Within the limitations of this study, socket preservation procedures may provide more favorable conditions for subsequent implant placement.

Rapid ultrasound score as an indicator of atherosclerosis' clinical manifestations in a population of hypertensives: the interrelationship between flow-mediated dilatation of brachial artery, carotid intima thickness, renal resistive index and retina resistive index of central artery.

OBJECTIVE: Flow-mediated dilatation (FMD) of brachial artery, renal resistive index (RRI), retina resistive index of central artery (RRICA) and carotid intima-media thickness (IMT) have been used for ultrasound assessment of cardiovascular risk as good surrogate markers of pre-clinical atherosclerosis. We investigated the interrelationship of these four parameters and examined whether an integrated score is a good indicator of atherosclerotic disease in hypertensives. METHODS: One-hundred fifty-two consecutive subjects were enrolled in this study between April 2004 and April 2005. Each patient underwent cerebral computed tomography, coronarography, carotid, renal, central retinal and femoral arteries Doppler ultrasonographic evaluation. Statistical analysis was performed using ANOVA, Fisher test, Pearson correlation and stepwise regression analyses. RESULTS: FMD, RRICA, IMT and RRI were significantly correlated with each other. In multiple regression analysis age, pulse pressure, hypertension duration were independently related with the four parameters. Eighty-one findings of total atherosclerotic disease (ADAD were recorded overall (15 cerebrovascular disease, 20 coronary heart disease or myocardial infarction, 22 carotid plaques and 24 low limb plaques). Using an integrated score we were able to divide the population into three scoring bands. In the lowest band we classified 87 patients with 16% of total AD; in the intermediate 40 patients with 30% of total AD, in the highest 25 patients with 54% of total AD. Differences between groups were significant (p<0.05). CONCLUSION: A potential benefit of these integrated, low-cost and easy-to-detect parameters, is the stratification of patients with atherosclerotic risk. This method may prove useful in discovering those with atherosclerosis in a pre-clinical stage for whom therapy initiated before complications could reduce the risk for a cerebro-cardio-vascular event.

Which is the correct management of patients with asymptomatic severe calcific aortic stenosis after symptomatic spontaneous calcium cerebral embolism?

Elective surgery cannot be recommended in every patient with asymptomatic severe aortic stenosis, and predictors identifying high-risk patients need to be identified. In guidelines we read that elective surgery, at the asymptomatic stage, can only be recommended in selected patients, at low operative risk (see guidelines of European Society of Cardiology and American Heart Association), but we have not read any reference to patients with severe calcific aortic stenosis after symptomatic spontaneous calcium cerebral embolism. Because cardioembolic stroke is associated with poor prognosis compared to other stroke subtypes, in patients with asymptomatic severe aortic stenosis and spontaneous calcific embolic stroke valve replacement appears to offer the best hope of avoiding a recidivation of stroke and should be considered in most cases. On the contrary, is it still correct to consider as asymptomatic patients with severe aortic stenosis and cerebral thromboembolism from a calcified aortic valve?

Clinical outcomes after treatment of non-contained intrabony defects with enamel matrix derivative or guided tissue regeneration: a 12-month randomized controlled clinical trial.

BACKGROUND: The purpose of this study is to compare the healing of deep, non-contained intrabony defects (i.e., with a ≥80% 1-wall component and a residual 2- to 3-wall component in the most apical part) treated with either an enamel matrix derivative (EMD) or guided tissue regeneration (GTR) after 12 months. METHODS: In this randomized, controlled clinical trial, 40 subjects with 40 defects affecting single-rooted teeth were treated. The defects were treated with EMD alone or with a non-resorbable titanium-reinforced membrane. No grafting materials were used. At baseline and after 12 months, clinical parameters including probing depths (PDs) and clinical attachment levels (CAL) were recorded. The difference in CAL gain was the primary outcome. RESULTS: At baseline, the intrabony component of the defects amounted to 8.5 ± 2.2 mm at EMD-treated sites and 8.6 ± 1.7 mm at GTR-treated sites (P = 0.47). The mean CAL gain at sites treated with GTR was significantly greater (P <0.001) than that at sites treated with EMD (4.1 ± 1.4 mm versus 2.4 ± 2.2 mm, respectively). GTR therapy, compared to EMD application alone, significantly (P = 0.01) increased the probability of CAL gain ≥4 mm (79.2% versus 11.3%, respectively) and significantly (P = 0.01) decreased the probability of residual PDs ≥6 mm (3% versus 79.3%, respectively). CONCLUSION: Although the outcomes of open-flap debridement alone were not investigated, the application of EMD alone appeared to yield less PD reduction and CAL gain compared to GTR therapy in the treatment of deep, non-contained intrabony defects.