Temporary anchorage devices (TADs) have become increasingly popular as orthodontic treatment measures for anchorage or distal movement of molars. However, TAD failure is a major limitation, and the aim of this study was to examine the effects of various factors on the timing of TAD failure. This study included 467 TADs implanted on the buccal side of the molar region in 197 patients undergoing orthodontic treatment. The relationship between failure and sex, age, jaw (maxilla or mandible) , side (left or right) , Frankfort mandibular plane angle (FMA) , point A-nasion-point B angle (ANB) , overbite, and overjet was examined. The time (number of days) until failure was also investigated. The failure rates were significantly higher in men compared to women (23.9% vs. 13.6% ; p-value = 0.024) , and in the mandible compared to the maxilla (28.2% vs. 11.8% ; p-value < 0.001) . A significant difference by agegroup was also observed (p-value < 0.029) , with the failure rates being highest among patients aged ≥ 30 years (29.8%) . Approximately half (47.6%) of the maxillary failures occurred by day 120, and more than half (58.1%) of the mandibular failures occurred by day 60. Moreover, the failure rate by day 120 was higher in the maxilla when the FMA was smaller. The failure rates of TADs implanted on the buccal side of the molar region were influenced by sex, age, and location (i.e., mandible or maxilla) . Failure tended to occur more rapidly and readily in mandibular compared to maxillary implants. Moreover, when considering the vertical skeletal pattern, failure rates < 120 days after implantation tended to increase when the FMA decreased.
The purpose of this study was to investigate the effects of aging on the squat task. [Subjects] Nineteen healthy elderly individuals participated (mean age: 70.5 years). [Methods] The squat task with eyes closed was performed on a force platform. The center of mass was recorded with a three-dimensional motion system and the reaction time, amplitude, and downward velocity of the center of mass were analyzed. [Results] There was no significant difference in the reaction times of the participants in their 60s and 70s. The downward amplitude and velocity of those in their 70s were lower than those in their 60s. Also, elderly participants in their 70s showed a tendency of increased anterior-posterior amplitude compared with those in their 60s. [Conclusion] The results suggest that the squat task becomes slower and more shallow with aging. There is a possibility that change in the motion of the center of mass in the sagittal plane is influenced by aging.
We investigated prevalence of coincident infections in acute Kawasaki disease (KD) to know the possible effects of infections on diagnosis of KD, clinical course, therapy decision and coronary outcomes. Single center consecutive 344 KD patients hospitalized in our institution, between January 2009 and December 2013 were retrospectively analyzed. Patients those were positive for bacterial culture, rapid antigen tests or elevated levels of pathogen specific antibodies were counted as KD patients with infection. Pathogen unproven patients those presented with apparent respiratory or gastrointestinal symptoms regarding infections were also counted as KD patients not to underestimate number of patients with suspected infections. Overall, 125 KD patients were grouped as KD patients with infection (Group1). Group1 included 125 patients with 73 upper respiratory tract infection, 21 bronchitis, 7 pneumonia, 3 acute otitis media and 21 gastroenterocolitis, respectively. Remaining 219 KD patients were grouped as KD without infection (Group2). Appropriate antibiotic or antiviral treatments were done for each pathogen proven infection. Distribution of age and sex, day of admission, diagnosis and treatment, prevalence of initial treatment regimen and rate of additional therapy, duration of fever, laboratory findings except serum albumin value, and coronary outcomes were similar between the groups. We showed that presence of coincident infections have no effects on clinical course, treatment decision and coronary outcomes on KD.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.