Philips Sonicare toothbrushes are designed to work optimally with their specific range of toothbrush heads, which are tailored for different cleaning needs and preferences. Using non-Sonicare heads may compromise the performance and effectiveness of the toothbrush. The compatibility of toothbrush heads can vary depending on the specific model of the Sonicare toothbrush you have, as some models use different attachment mechanisms. Therefore, it is generally recommended to use only the heads specifically designed for your Sonicare model to ensure the best possible cleaning experience and to maintain the toothbrush's functionality. For detailed information about compatible heads and options for your specific model, it may be helpful to consult the product page available on the Philips website.