Abstract Dental implants can be a breakthrough in dental treatment. It has become an important index of the operation performance for the dental clinics. Patients¡¦ knowledge of dental implant medical quality is different from dentists¡¦ due to asymmetric information. This study sample consists of two major groups: 200 patients and 20 dentists, recruited from 15 dental clinics providing services of dental implants in Kaohsiung city. The data was collected by a questionnaire and try to investigate the relationship between the baseline data , the knowledge and attitude of patients about dental implants. The purposes of this study is to identify the difference between patients and dentists about dental implant medical quality . Providing information for patients seeking dental implant care, and for dental implant marketing of dental clinics. The results show that the willingness to accept dental implants is higher in patients well-educated and good oral hygiene . The most popular resources of getting dental implant information are from TV and their dentists. 74% of patients do not know the brand of their dental implants. 84.2% of patients would like to recommend dental implants with the reasons of their dental experiences and the trust of the dentists. The satisfaction rate of dental implant exceeds 70%. As for selecting dentists, medical skills, medical ethics, medical equipments and public praise are the more important factors. Male and young patients are more affected by objective factors; female patients take more consideration of their own feelings. However old patients more concern about interpersonal relationship. Highly-educated patients attach more importance of profession; Lowly-educated patients more care about the environment of the clinics. About medical quality, the most important factors in dentists are medical skills and sterilization, followed by dentist-patients relationship. The first three in patients are medical skills, sterilization and specialist certification. Of all six common factors in patients and dentists, the most different factor is dentist-patient relationship. It shows obviously high in dentists, and it maybe due to the elevation of consumer¡¦s awareness in Taiwan. Key word: dental implant, dental service quality , dental clinic choice, factor analysis