Although dental implants can last for a long time, they do not last a lifetime. The duration of dental implants depends on several factors, including:

1. Personal care: It is important to clean the dentures regularly and maintain general oral hygiene, in order to maintain the health of the dentures and avoid any problems in the future.

2. Oral health: It is important to visit the dentist periodically to check the dentures and ensure that they are working properly, which helps to avoid any problems in the future.

3. The type of materials used: The duration of dental implants is affected by the type of materials used in manufacturing the artificial crown and the artificial root, and some materials last longer than others.

4. Age: The duration of dental implants is affected by age, as dentures are exposed to repeated use and wear over time, and may need to be replaced after a period of time.

Therefore, the patient must take care of personal care and visit the dentist periodically to check the dentures and maintain them well, and in the event of any problems or wear in the dentures, the dentist should be consulted to assess the condition and take the necessary measures.