How often should I clean my retainer, considering the varying factors that might influence its hygienic maintenance and longevity? Is there a universally accepted frequency for cleaning, or does it differ based on individual circumstances, such as dietary habits, oral health, and lifestyle choices? For instance, do certain foods or drinks contribute to a more rapid buildup of bacteria and plaque on the retainer, thereby necessitating more frequent cleansing? Furthermore, should the material of the retainer—be it plastic, metal, or a combination thereof—play a pivotal role in determining the cleaning regimen? What specific cleaning agents or methods are recommended to maintain not just cleanliness but also the integrity of the retainer? Finally, is there a risk of relying solely on orthodontist advice without considering personal habits, potentially leading to complications in dental health? These inquiries beckon a deeper understanding of retainer maintenance practices.