Oral Health Knowledge of Periodontal Disease among University Students

Table 3

Distribution of responses to periodontal health knowledge questions by year of study.

Questions	First year (𝑛 = 137)			Final year (𝑛 = 113)			𝑃 value; (𝜒^2 test)
	Yes (%)	No (%)	Do not know (%)	Yes (%)	No (%)	Do not know (%)
(1) What is the initiating factor of periodontal disease?
Bacterial plaque*	62	15	23	66	16	18	0.9083
Dental calculus	50	20	30	55	30	15
Malnourishment	60	18	22	57	23	20
Hereditary	57	20	23	60	30	10
Diabetes	19	43	38	65	20	15
Infection	20	70	10	17	50	33
(2) What is the most indicating sign of periodontal disease?
Gingival bleeding*	70	10	20	94	4	2	0.0004
Gingival swelling	65	25	10	80	12	8
Gingival redness	60	27	13	75	11	14
Bad breath	40	23	37	61	37	2
(3) What is the effective measure to prevent periodontal disease?
Use toothbrush and dental floss*	72	27	1	90	6	4	0.0012
Good nourishment	87	8	5	70	16	14
Regular visits to the dentist	81	17	2	82	10	8

 *The correct answer.