牙益健 (Ya Yijian) is an online dental information portal that helps users explore oral health topics and find information about dental clinics, practitioners, and treatments across China. Its listings cover providers in major cities and include details such as clinic type, establishment year, and areas of focus. The site features articles on dental care, treatment considerations, provider reputation, pricing, and promotional offers, alongside directories of hospitals and doctors.

Topics include dental implants, orthodontics, invisible braces, crowns, whitening, periodontal care, root canal treatment, pediatric dentistry, and restorative procedures. Visitors can browse treatment categories, read practical oral-health guidance, compare clinic information, and review articles about costs and available services. Ya Yijian states that it provides information and consultation-related services as an online service provider, rather than presenting itself as a dental clinic.

Its published information is for reference only, and the site disclaims responsibility for outcomes arising from its data. The platform also notes that member information may be shared with third parties within the scope of user consent to support consultation services