Fig. 2

The first choice of all the treatment options selected is evaluated for periodontists and NPDs in response to Question I-IV. 1: Treat the patient by myself; 2: Refer the patient to other periodontists; 3: Refer the patient to other oral surgeons; 4: Refer the patient to other implant specialists; 5: Refer the patient to the original dentist. A The most preferred treatment option selected in response to Question I for periodontists and NPDs. B The most preferred treatment option selected in response to Question II for periodontists and NPDs. C The most preferred treatment option selected in response to Question III for periodontists and NPDs. D The most preferred treatment option selected in response to Question IV for periodontists and NPDs