Objectives: We analyzed the correlation between physique and size of the dental arch of college students with normal occlusion. Methods: Ninety-nine college students filled out the prepared questionnaire. The length and width of the dental arch of the students was measured using a plaster model afte...
Objectives: We analyzed the correlation between physique and size of the dental arch of college students with normal occlusion. Methods: Ninety-nine college students filled out the prepared questionnaire. The length and width of the dental arch of the students was measured using a plaster model after taking an impression. The data were analyzed using the t-test and correlational analysis. Results: The maxilla arch length was 3.70 mm longer and the inter-molar width of the maxilla was 3.06 mm longer in men (both p<0.01) than in women. Additionally, the mandible was 3.66 mm longer in men as compared to those in the women (p<0.01). As height increased, there was increase in the body weight (α=0.683, p<0.01), maxilla arch length (α=0.373, p<0.01), molar width of the maxilla (α=0.214, p<0.05), and the mandible (α=0.280, p<0.01). The greater the weight increase, the greater the maxillary arch length increase (α=0.392, p<0.01), and the greater the molar width of the maxilla (α=0.336, p<0.01) and mandible (α=0.502, p<0.01) increase. Conclusions: As physical size (both height and weight) increased, the maxillary length and molar width also increased. Based on the results of this study, the cause of malocclusion, form and size of the dental arch, and stable occlusion can be used as basic data.
Objectives: We analyzed the correlation between physique and size of the dental arch of college students with normal occlusion. Methods: Ninety-nine college students filled out the prepared questionnaire. The length and width of the dental arch of the students was measured using a plaster model after taking an impression. The data were analyzed using the t-test and correlational analysis. Results: The maxilla arch length was 3.70 mm longer and the inter-molar width of the maxilla was 3.06 mm longer in men (both p<0.01) than in women. Additionally, the mandible was 3.66 mm longer in men as compared to those in the women (p<0.01). As height increased, there was increase in the body weight (α=0.683, p<0.01), maxilla arch length (α=0.373, p<0.01), molar width of the maxilla (α=0.214, p<0.05), and the mandible (α=0.280, p<0.01). The greater the weight increase, the greater the maxillary arch length increase (α=0.392, p<0.01), and the greater the molar width of the maxilla (α=0.336, p<0.01) and mandible (α=0.502, p<0.01) increase. Conclusions: As physical size (both height and weight) increased, the maxillary length and molar width also increased. Based on the results of this study, the cause of malocclusion, form and size of the dental arch, and stable occlusion can be used as basic data.
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문제 정의
The previous study was limited to females [19]. Therefore, we aimed to measure the physique of males also and analyze the correlation between the dental arch size and physique.
제안 방법
The questionnaire consisted of eight questions, including four questions on general characteristics including weight and height, respiration, orthodontic treatment experience, tooth extraction experience, and favorite food. The items were modified and adapted according to the study purpose by referring to the survey questionnaire by Han et al.
The surveyor made plaster models after recording impressions of the dental arches of the subjects with alginate impression material. The measurements are shown in [Fig.
As the physique increases, maxillary length and molar width increases. These results can be used as basic data to study the cause of malocclusion, form, and size of the dental arches, stability of occlusion, and oral health.
This study has a limitation of generalization, as measurements were performed only for some college students, and the physique of males and females was not similar. However, unlike previous studies [19], the males were also measured, except those who had undergone extraction and orthodontic treatment that could affect the size of the arch.
대상 데이터
3 effect size. Assuming the rate of elimination as 20%, 120 subjects were suitable for the analysis. The size effect was referenced from the results of the study by Han et al.
In this thesis, we analyzed the correlation between college students' physique and dental arch size. Ninety-nine subjects completed the questionnaire and underwent impression taking. The t-test and correlation analysis were used for analysis.
The average age of the subjects included in the study was 19.2 years, height was 169.7 cm (male 177.4 cm, female 161.8 cm), and weight was 66.9 kg (male 75.2 kg, female 58.7 kg). In 2015, a 19-year-old Korean had an average height of 168.
The study subjects were 120 students of the C college in Suncheon city. The purpose and method of the study was explained, and they were asked to fill out the questionnaire, to which signed the informed consent.
The study subjects were 99 students of the Cheongam College, and their details are shown in Table 1. Their average age was 19.
데이터처리
Independent t-test was used to compare the differences between the length and width of the dental arches according to the general characteristics. Pearson correlation coefficient was calculated for the correlation between the physique and size of the dental arch. The statistical significance level was p-value of less than 0.
Ninety-nine subjects completed the questionnaire and underwent impression taking. The t-test and correlation analysis were used for analysis.
성능/효과
1. In males, the maxillary arch length (p<0.01) and inter-molar width of the maxilla and mandible (p<0.01) were higher than that of females.
2. Differences in the dental arch size according to favorite food was not significant.
3. As height increased, the maxillary arch length increased (α=0.373, p<0.01), and molar width of the maxilla (α=0.214, p<0.05) and the mandible (α=0.280, p<0.01) also increased.
4. More the weight increase, more the increase in maxillary arch length (α=0.392, p<0.01) and molar width of the maxilla (α=0.336, p<0.01) and mandible (α=0.502, p<0.01).
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