| Project/Area Number |
63480457
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
小児・社会系歯学
|
|---|
| Research Institution | Showa University |
|---|
Principal Investigator |
SASA Ryuji Showa University, Department of Pedodontics, Professor., 歯学部・小児歯科, 教授 (20014201)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SHIMADA Yukie Showa University, Department of Pedodontics, Assistant., 歯学部・小児歯科, 助手 (10187437)
KASAHARA Masae Showa University, Department of Pedodontics, Assistant., 歯学部・小児歯科, 助手 (10185746)
YAMASHITA Noboru Showa University, Department of Pedodontics, Lecturer., 歯学部・小児歯科, 講師 (00129876)
INOUE Mistuko Showa University, Department of Pedodontics, Lecturer., 歯学部・小児歯科, 講師 (20112724)
SUZUKI Yasuo Showa University, Department of Pedodontics, Associate Professor., 歯学部・小児歯科, 助教授 (80107309)
|
|---|
| Project Period (FY) |
1988 – 1989
|
| Project Status |
Completed (Fiscal Year 1989)
|
| Budget Amount *help |
¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥4,300,000 (Direct Cost: ¥4,300,000)
|
|---|
| Keywords | Periodontal Disease / Youth / ginginal color / C.P.I.T.N. / consciousness examination / Pl-I value / colorimeter / saliva occult blood test / P1ーI値 / C.P.I.T.N / PL-1値 |
|---|
| Research Abstract |
In the purpose of studying disease establishment and etiology of odontal disease in adolescents, a periodontal survey and questionnaire on disease awareness were performed on 8000 subjects consisting of male and female high-school and middle-school students and children referring to Showa University Department of Pedodontics.
Concerning male high-school students, approximately 30% showed bleeding tendencies, with average Pl. I. of approximately 1.0 with a difference in severity, most of the subjects had establish periodontal diseases (disease rate: 97.5%). CPITN values showed that there was a tendency in subjects in higher grades to be in more severe disease stage. The state of gingival inflammation as evaluated by the PMA Index showed that including ever slight inflammations, almost all of the subjects had gingival inflammation.
The three year longitudinal study showed that Pl. I. scores decreased statistically, but CPI disease rate was constant overall at high level and although gingival inflammation occasionally showed improvements, longitudinal calculus accumulation and moderate-advanced periodontitis showed advance.
On the other hand, female middle-school students showed higher PI. I. and CPITN scores compared to female high-school students. The percentage of female middle-school students to have more advanced periodontal disease was higher than that of female high-school students.
From the questionnaire, difference was observed between male and female high-school students in toothbrushing habits and periodontal disease awareness.
As a result it was strongly suggested that in the purpose of studying the condition of periodontal disease and the disease awareness in adolescents and to further promote early stage diagnosis and the establishment of a preventive procedure for periodontal disease, a combined periodontal survey and questionnaire study are very effective.
|
