Probing force and the relationship of the probe tip to the periodontal tissues.
D003762:Dental Instruments; D005884:Gingival Hemorrhage / Q000209:etiology*; D006801:Humans; D006472:Oral Hemorrhage / Q000209:etiology*; D010510:Periodontal Diseases / Q000175:diagnosis* / Q000601:surgery; D010512:Periodontal Index; D010514:Periodontal Pocket; D010518:Periodontitis