Ronen Shika Igaku
Online ISSN : 1884-7323
Print ISSN : 0914-3866
ISSN-L : 0914-3866
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Original Article
  • Keina Miura, Mai Ohkubo, Tetsuya Sugiyama, Wataru Ofusa, Ryo Ishida
    2019 Volume 34 Issue 2 Pages 127-135
    Published: September 30, 2019
    Released: October 17, 2019

     Sarcopenia, which is defined as loss of muscular mass, strength, and quality associated with aging, may also occur in the oral region of elderly people. In this study, ultrasound real-time tissue elastography(Noblus, Hitachi, Tokyo)was used to determine tongue hardness. However, to the best of our knowledge, there are no previous studies applying this method to the tongue. We applied the method to 10 healthy volunteers(5 men and 5 women)with a mean age of 26.1±1.1 years. We measured the hardness and thickness of the tongue with the subjects in a seated position at rest, and while holding 3 mL of water and thickened water in the mouth. The strain ratio(SR)from real-time tissue elastography was used to measure tongue hardness. Seven images were recorded for each subject under each test condition. The tongue thickness and hardness were measured, and the mean value was set as the representative value. Repeated measure one-way ANOVA and Spearmanʼs correlation were used for statistical analysis. The median SR values for the 10 subjects were 0.69 at rest, 0.48 when holding water, and 0.44 when holding thickened water. A significant difference was seen in tongue hardness at rest and that when holding water. The concavity of the tongue when holding water had a negative significant correlation with tongue hardness at rest and that when holding water. This suggests that strain elastography can be applied to external measurement of tongue hardness under certain conditions. Further research is needed on measurements of the tongue in elderly individuals using ultrasound elastography to investigate age-related changes, including conducting the test under other conditions.

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Clinical Report
Report on Survey
  • Yusuke Oomura, Masumi Komatsu, Kentaro Honda, Shun Tagawa, Taiki Suzuk ...
    2019 Volume 34 Issue 2 Pages 143-148
    Published: September 30, 2019
    Released: October 17, 2019

     In Japan, the elderly population is increasing rapidly. Additionally, the activity of the elderly is improving, and the number of elderly patients who are injured is increasing accordingly. The purpose of this study was to analyze the characteristics of maxillofacial fractures in elderly patients. We clinically evaluated the age, sex, medical history, injury cause, fracture site, and treatment in 320 patients with maxillofacial fractures. The cohort comprised 90 cases ≥ 65 years and 230 cases<65 years of age. Statistical analysis showed a significant difference between the groups of females, cardiovascular disease, cerebrovascular disease, diabetes mellitus, fallings, midface fractures, and conservative treatments in elderly patients. The study suggests the characteristics of maxillofacial fractures differ between elderly and young patients.

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