應用計畫行為理論於國中學生學校午餐後潔牙行為意圖之研究

一口好牙可使身體健康，保持口氣清新而更有自信，在用餐後正確的刷牙及使用牙線，可以清除造成蛀牙及牙周病的牙菌斑，免於牙痛之苦!因此，了解國中生餐後潔牙之意圖及影響因素，以提升餐後潔牙率為本研究之目的。本研究運用Ajzen(1991)所提出的計畫行為理論(Theory of Planned Behavior;TPB)為研究架構，以桃園市某國中學生為研究對象，使用自編之問卷進行量化調查，共計收回343份有效問卷。收集的資料以SPSS for windows 20.0、結構方程模式之偏最小平方法(Partial Least Squares-Structral Equations Model;PLS-SEM)進行分析，分析結果如下：一、本研究對象未來一個月內有從事餐後潔牙行為之意圖者占57％。二、本研究對象從事餐後潔牙之態度、主觀規範、知覺行為控制與行為意圖彼此間皆呈正相關，其中以知覺行為控制的影響力最大，態度次之，主觀規範最弱。三、研究對象餐後潔牙行為信念的強度及餐後潔牙行為結果的評價會影響其餐後潔牙的態度;研究對象餐後潔牙規範信念的強度及餐後潔牙依從動機的強度會影響其餐後潔牙的主觀規範;研究對象餐後潔牙控制信念的強度和知覺行為控制程度沒有顯著相關，研究對象餐後潔牙知覺力量的強度會影響其餐後潔牙知覺行為控制的程度。

關鍵字

國中生；計畫行為理論(TPB) ；餐後潔牙；行為意圖

並列摘要

Good teeth give us a healthy body, and having fresh breath makes us confident. Brushing teeth and flossing after meal helps us remove the bacterial dental plaque which would bring us decayed tooth and periodontal disease, keeps us from the suffering of toothache. The aim of this study is to improve the rate of teeth cleaning after meal through the studying of junior high school students’ behavioral intention and effect factors for cleaning their teeth after meal. This study used the Theory of Planned Behavior proposed by Ajzen(1991) as its research framework. Taking the junior high school students at a certain school in Taoyuan as materials, and using questionnaires to serve as quantization survey. 343 valid questionnaires is analyzed with SPSS for windows 20.0 and Partial Least Squares-Structral Equations Model,(PLS-SEM), the result of analysis is as follow： 1.57% of the subjects in this study hold the behavioral intention to clean their teeth after meal within the next month. 2.There is a positive correlation among behavioral intention and atitude, subjective norm, perceived behavioral control of after-meal-tooth-cleaning. Perceived behavioral control is the most influential factor, followed by attitude, and subjective norm is the least influential. 3.The strength of subjects’ behavioral beliefs and the outcome evaluation of after-meal-tooth-cleaning influence their behavioral attitude. The strength of subjects’ normative beliefs and motivation to comply influence their subjective norm of after-meal-tooth-cleaning. The strength of subjects’ control beliefs and their perceived behavioral control of after-meal-tooth-cleaning have no significant correlation. The strength of subjects’ perceived power influences their perceived behavioral control of after-meal-tooth-cleaning.