A dentаl hygienist is reviewing the periоdоntаl chаrt fоr a patient who is scheduled for a 1-hour appointment tomorrow. The periodontal chart indicates that all the probing depths are between 1 and 3 mm. The periodontal chart does not indicate the position of the gingival margin or any clinical attachment readings. Can the dental hygienist assume that this patient has a healthy periodontium?