Welcome Periodontal Services, Oral Surgery, and Dental Implants for Alpharetta, GA Welcome to Periodontics and Dental Implant Center of Roswell, the home of dental specialist Dr. Karl Heinzelmann. Our practice, backed by cutting-edge dental technology, provides top quality periodontal services and dental implants for Alpharetta and the surrounding communities of Milton and John’s Creek. Whether your smile has been compromised due to periodontitis or you’re looking for implants to replace missing teeth, Dr. Heinzelmann can restore your dental health.