The following is the AI's preliminary analysis of this message, which we hope will provide you with some ideas before it is fact-checked by a human.
這則訊息提到從今年起,65歲以上老人每3個月可免費洗牙、塗氟一次,但並未提及具體的政策來源或相關官方機構的說明,因此閱聽人需要進一步確認訊息的真實性和可信度。此外,訊息中提到保護牙齒可以預防失智症、營養不良、糖尿病和侵害心臟等等,但這些說法是否有科學依據也需要進一步確認。