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Background: Cardiac arrhythmias are very common but underdiagnosed due to their transient and asymptomatic nature. An optimization of arrhythmia detection would permit to better treat patients and could substantially reduce morbidity and mortality. The SmartCardia ScaAI wireless patch is a novel CE IIa approved, single-lead electrocardiographic (ECG) ambulatory monitor designed for cardiac arrhythmias detection.Hypothesis: The accuracy of the new SmartCardia wireless patch to detect arrhythmias is comparable to the conventional Holter monitoring.Methods: Patients referred for a suspicion of arrhythmia between February and March 2020 were included in the trial. Simultaneous ambulatory ECG were recorded using a conventional 24-h Holter and the SmartCardia. The primary endpoint was the detection of cardiac arrhythmias over the total wear time of the devices, defined as premature atrial contraction (PAC), supraventricular tachycardia ≥3 beats, premature ventricular contraction (PVC), and ventricular tachycardia ≥3 beats. Conduction abnormalities, pause ≥2 s and atrioventricular block (AVB), were also tracked. McNemar's test was used to compare the matched pairs of data from both devices.Results: A total of 40 patients were included in the trial. Over the total wear time, there was no significant difference between the devices for ventricular and supraventricular arrhythmias detection. Pauses and AVB were equally identified by the two devices in three patients.Conclusion: Over the total wear time, the SmartCardia device showed an accuracy to detect arrhythmia similar to the 24-h Holter monitoring: single-lead, adhesive-patch monitoring might become an interesting alternative to the conventional Holter monitoring.

LetM(n) denote the set of all matchings of the complete graph Kn. Set t =[ ]. For 0 ≤ k < l ≤ t−k ≤ t, letM(k, l) denote the incidence matrix of the cardinality k matchings (the rows) vs. the cardinality l matchings (the columns). We show that M(k, l) has full row rank

Background and Aim : Patients with complete dentures more occasionally neglect their denture and oral health by improper maintenance of dentures, resulting in bad oral and denture hygiene. This may lead to a host of multiple local and systemic problems such as stomatitis, bacterial and fungal infections, reservoirs for distant infections, denture stains and bad breath. Most denture wearers maintain their dentures with simple manual cleansing methods, which are not adequate to effectively sanitize the reservoir of microorganisms inhabiting the denture surfaces. The aim of this study was to compare the efficacy of the use of a denture cleanser and compare it with an adjunct use of chlorhexidine mouth rinse along with the denture cleanser and possibly suggest it as a suitable protocol. Materials and Methods : Two groups of complete denture patients were selected for the study. The total number of patients in each group was 12 and the total period of the study was 21 days. Three sets of microbiological samples were collected from each patient: before the start of the study, on day 8 and on day 21 of the study. The first sample was collected after an initial washover period (7 days) with plain water before the start of the study and the second set after 1 week of study initiation, where group-1 followed protocol-I (denture cleanser only) and group-2 followed protocol-II (denture cleanser and mouth rinse). A second washout period of 7 days followed and a crossover of the protocol was performed for the groups and followed for 1 week. Then, a third set of samples were collected. The colony-forming units were calculated for each patient for each sample and statistically analyzed. Friedman test for non-parametric analysis was employed for the comparison within the groups and a Mann-Whitney test was used for the statistical comparison between the groups. Results : There was a definite reduction in the bacterial numbers and a significant statistical difference after administering the protocols in both the groups (P < 0.001). However, there was little significance on comparing the samples between the groups (P=0.026) in the initial study period, and there was no statistical significance when comparing the groups after the crossover (P=0.140). Conclusion : The use of denture cleansers definitely reduced the microbial numbers as compared to plain manual cleansing methods in complete dentures. Although there was a substantial decrease in the bacterial colonies after the use of the mouthwash, it was not statistically significant.

Background and Objective: Intrusion of natural teeth is a very common and interesting problem associated with implant-assisted fixed partial prostheses. Various theories have been put forth to explain this phenomenon, most of which revolve around the philosophy of exertion of excessive forces onto the natural tooth in a combination fixed partial denture. This photoelastic study examines the current theories revolving around intrusion and evaluates whether natural tooth intrusion is a definite possibility in an implant-tooth-connected fixed partial prosthesis. Materials and Methods: A two-dimensional photoelastic method was employed for testing and analysis. Two sets of photoelastic models were fabricated, one depicting a totally tooth-supported situation and the other an implant-tooth-supported situation. A rigid type and non-rigid type of connection were also incorporated into the fixed partial denture used in the both the situations in the study. Loads were applied on the anterior and posterior abutments and the pontic regions in both sets of models and the fringe patterns were photographically recorded for analysis. Results and Conclusion: The forces were proportionately consistent with the increase in applied loads in both the situations. The use of a non-rigid connection did not show any major significance but in fact may be erroneous. The forces were considerably higher in the implant-tooth-connected situation. The results indicated that the differences in the forces exerted were not light and continuous and may not cause tooth intrusion. Natural tooth intrusion may be caused by reasons other than excessive forces and needs further investigation.

Buffers in on-chip networks constitute a significant proportion of the power consumption and area of the interconnect, and hence reducing them is an important problem. Application-specific designs have nonuniform network utilization, thereby requiring a buffer-sizing approach that tackles the nonuniformity. Also, congestion effects that occur during network operation need to be captured when sizing the buffers. Many NoCs are designed to operate in multiple voltage/frequency islands, with interisland communication taking place through frequency converters. To this end, we propose a two-phase algorithm to size the switch buffers in network-on-chips (NoCs) considering support for multiple-frequency islands. Our algorithm considers both the static and dynamic effects when sizing buffers. We analyze the impact of placing frequency converters (FCs) on a link, as well as pack and send units that effectively utilize network bandwidth. Experiments on many realistic system-on-Chip (SoC) benchmark show that our algorithm results in 42% reduction in amount of buffering when compared to a standard buffering approach.

Background: This in vitro study evaluated the efficacy of professional and home-use fluoride regimens for protecting irradiated enamel, undergoing pH cycling resembling xerostomia. Methods: Sixty human premolar teeth were irradiated with a total dose of 70 Gy and subsequently sectioned into 3 × 3 cm enamel slabs. These slabs were randomly distributed into five groups (n = 12 per group): professional-use groups received fluoride varnish either weekly (FV1) or biweekly (FV2); home-use groups applied 5000 ppm (FT5) or 1450 ppm (FT) fluoride toothpaste; and a control group (control) received no treatment. Following radiation, microhardness was measured to establish baseline values. Following 28 days of pH cycling and concurrent fluoride therapy, microhardness was reassessed on day 7, 14, 21, and 28. After the pH cycling period, surface morphology was examined using scanning electron microscopy. Results: All groups demonstrated declines over the 28-day pH cycling period. FV1 and FV2 maintained higher microhardness relative to control (p < 0.0001). FT5 consistently showed better preservation of enamel microhardness compared to FT (p < 0.0001), with both outperforming control (p < 0.0001), albeit FT to a lesser extent. Conclusion: Fluoride treatments significantly enhanced the enamel's resistance to pH reduction caused by radiation. It is recommended to apply professional fluoride varnish biweekly and use 5000 ppm fluoride toothpaste twice daily for the most effective enhancement of pH resistance in irradiated enamel. [ABSTRACT FROM AUTHOR]

ABSTRACT Objective Methods Results Conclusion This study aimed to correlate the bite/occlusal force measurements obtained through two methods: a hydraulic pressure gauge with a biting transducer (GM‐10), and a computer‐assisted device that records occlusal force on a pressure‐sensitive film (Prescale II).Healthy, dentate volunteers were recruited. Participants' demographic data included age, sex, number of teeth present, presence of oral pain, history of prior orthodontic treatment and presence of parafunction. Bite/occlusal force measurements were recorded for each participant using the GM‐10 and the Prescale II devices. Linear Mixed‐effect model regression was performed with the significance set at p < 0.05.Forty‐six volunteers (women = 25, men = 21; mean‐age = 30.9 ± 9.3 years) participated. 54.3% and 34.8% presented with 28 and 29–32 teeth, respectively. 60.9% and 26.1% of the participants reported previous orthodontic treatment and oral parafunction. The overall mean GM‐10 measurements recorded were 333.0 ± 192, 276 ± 167, 208 ± 134, 142 ± 103 Newtons, for the 2nd and 1st molars, 2nd and 1st premolars, respectively. GM‐10 measurements were associated with the tooth position (p < 0.001) and the number of teeth (p < 0.001). The mean Prescale II measurements obtained with and without filter were 826 ± 594 and 1049 ± 595 Newtons, respectively, which were positively correlated with the occlusal contact area (r = 0.765; p < 0.001) and GM‐10 (r = 0.245; p = 0.019). The regression analysis for dependent repeated data confirmed the significant effect of the GM‐10 measurements (bite force) and the occlusal contact area on the Prescale II measurements.Within the limitations of this study, it can be concluded that the correlation between bite force measurements carried out by GM‐10 and Dental Prescale II was low and may not be considered interchangeable methods. The maximum bite force measured in isolated point contacts was a predictive factor of the occlusal force distributed over the entire arch. Further studies are warranted to explore this influence in the clinical implications of these findings. [ABSTRACT FROM AUTHOR]

Aims: To assess oral health, treatment burden, mortality risk, and demographics in elders with care‐resistant behaviors (CRB) in nursing homes (NH) and compare them with those without CRB. Methods and results: 503 participants from eight NH who received dental treatment through a mobile dental clinic were included. Their medical and dental records were screened regarding oral/dental health, treatment history, general health, demographics, and CRB. Statistical analysis was performed to show correlations between CRB and the measured parameters. Data were verified for normal distribution; a point‐biserial correlation model was used (95% CI: α = 0.05). No correlation was found between CRB and Decayed Missing Filled Teeth (DMF‐T) (rpb = ‐0.061, p =.177), as well as periodontal status (rpb = 0.004, p =.946). A negative correlation was observed between CRB and the required number of treatment procedures (rpb = ‐0.181, p <.0001), time (rpb = ‐0.118, p =.010), and costs (rpb = ‐0.100, p =.028). Sex predilection for men regarding CRB was evident (rpb = ‐0.155, p =.01). No correlation appeared between CRB and vital status (rpb = ‐0.41, p =.355). Conclusion: Oral health seems to be similar in institutionalized elders with or without CRB. Treatment burden was not elevated, but even reduced in elders with CRB, evincing that few/no treatment procedures were performed in those elders. CRB demonstrated a sex predilection for men. An association between CRB and increased mortality was not evident. [ABSTRACT FROM AUTHOR]