Peri-implant Marginal Bone Loss and Implant Failure in Patients With Smoking Habit

The present study was designed as a retrospective case control study in a sample of patients with implant-supported restorative therapy conducted at the Dentistry Hospital of the University of Barcelona (Campus of Bellvitge). It is designed following the principles outlined in the Declaration of Helsinki (revised, amended, and clarified in 2013). All of the patients are being properly informed about the study according to the Comité Ético (CEIC) del Hospital Odontològic Universitat de Barcelona guidelines, and informed consent must be signed prior to the interventions. Patients provided with implant-supported restorative therapy were selected from the DHUB database. The sample is divided in two groups: smoking and non-smoking patients. An initial questionnaire is being conducted to obtain information regarding smoking habits. Candidates undergo an oral examination, radiographic study (Orthopantomography and Implant periapical radiograph) and implant probing to determine their peri-implant status.