*2.4. Questionnaire*

Information related to age, sex, highest education level, family history of smoking, daily frequency and duration of cigarette smoking, daily flossing and tooth brushing, duration of functional dental implants, location, and the number of dental implants in either jaw were collected. The questionnaire also collected data relating to SPP utilizing the NPRS. It was suggested that participants choose a number ranging from 0 to 10 that most appropriately fit their perceived pain's intensity with 10 and 0 depicting the worst pain possible and no pain, respectively [27]. A trained investigator (T.A.) distributed the questionnaire to all participants.
