Meirin College

About: Meirin College is a education organization based out in Niigata, Japan. It is known for research contribution in the topics: Flexural strength & Tongue. The organization has 34 authors who have published 33 publications receiving 159 citations.

Clinical and pathological studies of cemento-ossifying fibroma

Abstract: We clinically and histopathologically analyzed 16 patients with cement-ossifying fibroma who presented at our department between 1979 and 1998. Women were 75% more likely to develop this lesion than men: the male: female ratio was 1: 3. The average age on presentation of this tumor was 36.6 years, with a range of 14 to 70 years. This tumor arose in the mandible in 11 patients (57.9%) and in the maxilla in 8 (42.1%). Most of the lesions were located in the molar region. Fifteen tumors were surgically removed, and 4 were treated by extirpation. The prognosis of most patients was favorable, and recurrence occurred in only 1 patient (6.7%).

Clinical and pathological studies of cemento-osseous dysplasias

Abstract: We clinically and histopathologically analyzed 41 cemento-osseous dysplasias in 39 patients treated at the 1st Department of Oral and Maxillofcial Surgery, Tokyo Medical and Dental University between 1979 and 1998. Among the 39 patients, 9 were male and 30 female. The average age of the patients was 58.5 years. The tumor occurred most frequently in the mandible (37 cases, 90.2%), especially in the molar region. According to the new WHO classification (1992), there were 11 cases of periapical cemental dysplasia, 3 cases of florid cemento-osseous dysplasia, and 27 cases of other types of cemento-osseous dysplasia. There was no recurrence between 6 months and 15 years of any of the 41 lesions treated by sugery.

Onsite Feedback for Recognizing Functional Mastication by Surface EMG

Abstract: Changes in masticatory function should be augmented especially for elderly, because not enough blushing causes periodontal disease, temporomandibular disorders, and further sometimes links to dementia. Moreover, unilateral chewing could enlarge masticatory trouble. Since denture wearers are subject to mild cognitive impairment, clenching properly is required everyday life. To achieve this strategy, we have tried to develop an onsite feedback of masticatory function at a reasonable price.

Periodontal health predicts self-rated general health: A time-lagged cohort study.

Abstract: Objectives There is limited evidence of a temporal relationship between periodontal diseases and self-perceived general health. To plug this knowledge gap, we aimed to assess how periodontal health affects future self-rated health (SRH). Methods We collected data from five waves of an annual nationwide Japanese survey of dental patients from 2015 to 2019. The analysis of repeated measurements included 9306 observations from 4242 patients aged 20 years or older. The clinical periodontitis measurements were bleeding on probing, deepest periodontal pocket depth and most severe clinical attachment loss (CAL). We used a self-administered questionnaire to collect data on sociodemographic characteristics, diabetes history, health behaviour, SRH and self-reported periodontitis. We applied 2-level ordered logistic regression models for repeated measurements to examine the relationships between SRH (time t) and 1-year-lagged periodontal health (time t-1) after adjusting for covariates. Results The percentage of SRH responses recorded at time t as 'good', 'moderate' and 'poor' were 36.9%, 52.4% and 10.7%, respectively. Multivariate analyses showed that the risk of poorer SRH at time t increased in patients with CAL ≥7 mm (odds ratio [OR] = 1.15, 95% confidence interval [CI] = 1.02-1.30), those who reported bleeding gums (OR = 1.33, 95% CI = 1.21-1.46) and those who perceived swollen gums (OR = 1.40, 95% CI = 1.26-1.56) at time t-1. Sensitivity analyses using the 4-year follow-up model and 3-year-lagged cohort model also showed consistent results. Conclusion Periodontitis shows a gradual contribution to future SRH in dental patients, even after adjusting for sociodemographic characteristics, general health and health-related behaviours.