Application service provider (ASP) featuring software for use in providing cranio-facial, medical, oral, and dental health treatment services; providing temporary use of on-line non-downloadable software for providing cranio-facial, medical, oral, and dental health treatment services; non-downloadable computer-aided modeling software used in dentistry and orthodontics to create three-dimensional computer representations of patient dentition, dental model images for dental impressions and study casts; on-line non-downloadable software used for diagnosing and treating cranio-facial, medical, oral, and dental health conditions; on-line non-downloadable software used for diagnosing and treating cranio-facial, medical and dental health conditions