Periodontics and Implant Dentistry in Highland and Valparaiso, IN For some patients, achieving optimal oral health requires more than routine dentistry. Since 1985, The Periodontal Group has provided patients with access to advanced periodontics and implant dentistry options. With state-of-the-art facilities in Highland and Valparaiso, periodontists Dr. Gene Ranieri and Dr. Basel Hajjar are dedicated to improving quality of life for our patients through specialized periodontics.