Nicola Ursula Zitzmann, DDS, PhD



Title:  Strategic Considerations in Treatment Planning: When to Treat, Extract or Replace a Questionable Tooth?



When deciding whether to treat and maintain or to extract and possibly replace a questionable tooth with a dental implant, practical criteria and a systematic process should be applied.  When evaluating the outcome of root canal treatment, an observation period of 4-5 years is required for complete healing of periapical lesions.  Dental implants, however, present a de novo situation and a functional period of at least 5 years is often required before peri-implant diseases are established and detected.  Good long-term success rates and greater flexibility in clinical management indicate that root canal treatment or retreatment should be performed first in most instances unless the tooth is judged to be unrestorable.  When deciding if a compromised tooth of questionable prognosis should be maintained or replaced by an implant, both local, side-specific and more general patient-related factors should be considered.  While single risks are possibly accepted for single tooth restorations, teeth with questionable prognosis and multiple pretreatment requirements are better not included as abutments in fixed dental prosthesis to reduce the risk to survival of the entire restoration.


Course Objectives:

The attendees should be informed about possible risks and complications of endodontic, periodontal and implant treatment. The practitioner should be able to apply the decisive factors for a systematic evaluation of a questionable tooth and assess tooth prognosis.


Bio:  Nicola Ursula Zitzmann received her Board-Examination and Dental Degree at the University of Aachen, Germany in 1991, finished her doctoral dissertation in 1992 and worked as an assistant in private practice for 2.5 years.  From 1994 to 1997, she completed the postgraduate program at the Department of Fixed and Removable Prosthodontics and Dental Material Sciences (Prof. Schärer) in Zurich, Switzerland. From 1997, N. Zitzmann worked as Assistant Professor at the Department of Fixed and Removable Prosthodontics and TMJ Disorders (Prof. Marinello) at the University of Basel (Switzerland) and completed the specialist training in Reconstructive Dentistry in 2001.  She finished her habilitation thesis (equivalent to Ph.D.) entitled "Prosthodontic treatment of the edentulous patient with particular consideration given to implant-supported restorations" in 2004.  N. Zitzmann has been a Visiting Assistant at the Department of Periodontology (Proff. Lindhe and Berglundh) at the University of Göteborg, Sweden, and achieved her Ph.D. degree in the field of Periodontology in 2006.  Currently, she is working as Associate Professor in the Clinic for Periodontology, Endodontology and Cariology at the University of Basel.  She is a member of the International College of Prosthodontics and the Academy of Osseointegration, the Swiss Society of Periodontology (SSP) and the Swiss Society of Reconstructive Dentistry (SSRD).