“…7,12,[14][15][16][17][18][19][20][21][22][23] The validity of self-reporting on teeth present, decayed teeth, missing teeth, malocclusion and prosthetic condition has been demonstrated. [15][16][17][18]23 However, former studies have reported that self-assessment of periodontal condition was inaccurate and inconsistent, 7,12,14,15,[17][18][19][20][21][22] and the validity was not confirmed. Further, the validity of self-assessment of gingival bleeding, swelling and calculus deposits found in gingivitis and mild periodontal disease, is found to be low, 14,21,22 compared to tooth mobility and gingival recession found in severe periodontitis 14,18,21,22 .…”