The plaque status of 6 tooth was recorded using the plaque index, as followes:

0 = No plaque

1. = Thin film of plaque, scraped with explorer
2. = Moderate amount of plaque, visible with naked eyes
3. = Abundance of soft matter within the gingival pocket and/or on the tooth and gingival margin.

For each patient, PI will measured by the teeth 12,16,24,32,36,44

The plaque status of 6 tooth was recorded using the plaque index, as followes:

0 = No plaque

1. = Thin film of plaque, scraped with explorer
2. = Moderate amount of plaque, visible with naked eyes
3. = Abundance of soft matter within the gingival pocket and/or on the tooth and gingival margin.

For each patient, PI will measured by the teeth 12,16,24,32,36,44

Using periodontal probe to measure the depth from the bottom of the periodontal pocket to the gingival margin, recorded at six sites (mesial [buccal and lingual/palatal], distal [buccal and lingual/palatal], mid-buccal, and mid-lingual/palatal) around each tooth, except for the third molar.

Using periodontal probe to measure the depth from the bottom of the periodontal pocket to the gingival margin, recorded at six sites (mesial [buccal and lingual/palatal], distal [buccal and lingual/palatal], mid-buccal, and mid-lingual/palatal) around each tooth, except for the third molar.

Using periodontal probe to measure the depth from the bottom of the periodontal pocket to the gingival margin, recorded at six sites (mesial [buccal and lingual/palatal], distal [buccal and lingual/palatal], mid-buccal, and mid-lingual/palatal) around each tooth, except for the third molar.

Using periodontal probe to measure the distance from the enamel-dentin junction to the bottom of the periodontal pocket.

- Page 4 of 8 - For each patient, CAL will measured each teeth.

Using periodontal probe to measure the distance from the enamel-dentin junction to the bottom of the periodontal pocket.

- Page 4 of 8 - For each patient, CAL will measured each teeth.

Using periodontal probe to measure the distance from the enamel-dentin junction to the bottom of the periodontal pocket.

- Page 4 of 8 - For each patient, CAL will measured each teeth.

Item including that because of problems with your teeth or mouth, you:

• Have you had trouble pronouncing any words because of problems"
• Have you felt that your sense of taste has worsened"
• Have you had painful aching in your mouth"
• Have you found it uncomfortable to eat any foods"
• Have you been self-conscious"
• Have you felt tense"
• Has been your diet been unsatisfactory"
• Have you had to interrupt meals?"
• Have you found it difficult to relax"
• Have you been a bit embarrassed"
• Have you been a bit irritable with other people"
• Have you had difficulty doing your usual jobs"
• Have you felt that life in general was less satisfying"
• Have you been totally unable to function" Responses are scored on a 5-point Likert scale with endpoints ranging from 0 (never) to 4 (very often), indicating the frequency of the problem over the preceding 6 months. The possible scores were 0-56, with lower scores indicating more favorable OHRQoL.

Item including that because of problems with your teeth or mouth, you:

• Have you had trouble pronouncing any words because of problems"
• Have you felt that your sense of taste has worsened"
• Have you had painful aching in your mouth"
• Have you found it uncomfortable to eat any foods"
• Have you been self-conscious"
• Have you felt tense"
• Has been your diet been unsatisfactory"
• Have you had to interrupt meals?"
• Have you found it difficult to relax"
• Have you been a bit embarrassed"
• Have you been a bit irritable with other people"
• Have you had difficulty doing your usual jobs"
• Have you felt that life in general was less satisfying"
• Have you been totally unable to function" Responses are scored on a 5-point Likert scale with endpoints ranging from 0 (never) to 4 (very often), indicating the frequency of the problem over the preceding 6 months. The possible scores were 0-56, with lower scores indicating more favorable OHRQoL.

Item including that because of problems with your teeth or mouth, you:

• Have you had trouble pronouncing any words because of problems"
• Have you felt that your sense of taste has worsened"
• Have you had painful aching in your mouth"
• Have you found it uncomfortable to eat any foods"
• Have you been self-conscious"
• Have you felt tense"
• Has been your diet been unsatisfactory"
• Have you had to interrupt meals?"
• Have you found it difficult to relax"
• Have you been a bit embarrassed"
• Have you been a bit irritable with other people"
• Have you had difficulty doing your usual jobs"
• Have you felt that life in general was less satisfying"
• Have you been totally unable to function" Responses are scored on a 5-point Likert scale with endpoints ranging from 0 (never) to 4 (very often), indicating the frequency of the problem over the preceding 6 months. The possible scores were 0-56, with lower scores indicating more favorable OHRQoL.

Item including that "I think periodontal disease is a serious disease"

• If I do not have periodontal disease prevention behavior, the risk of developing periodontal disease in the future is very high"
• If I stick to periodontal disease prevention behavior, it will improve my oral health"
• I believe that I can follow the periodontal health guidance"
• I find it hard to remember/hard to do periodontal health care guidance"
• Periodontal disease bothers me"
• I want to complete my personal periodontal disease prevention behavior plan" All the items' scores ranged from one to ten, with higher scores indicating a higher level of motivation toward change behaviors.

Cronbach's α was 0.70 for this scale. The scores ranged from one ("impossible") to ten ("very possible"), with the total possible score ranging from seven to seventy

Item including that "I think periodontal disease is a serious disease"

• If I do not have periodontal disease prevention behavior, the risk of developing periodontal disease in the future is very high"
• If I stick to periodontal disease prevention behavior, it will improve my oral health"
• I believe that I can follow the periodontal health guidance"
• I find it hard to remember/hard to do periodontal health care guidance"
• Periodontal disease bothers me"
• I want to complete my personal periodontal disease prevention behavior plan" All the items' scores ranged from one to ten, with higher scores indicating a higher level of motivation toward change behaviors.

Cronbach's α was 0.70 for this scale. The scores ranged from one ("impossible") to ten ("very possible"), with the total possible score ranging from seven to seventy

Item including that:

"How many times do you brush your teeth a day?" The response was (once or twice day or three times or fours times or more/ day).

"How long do you usually brush your teeth each time?" The response was lower than 1 min or 1-2 min or 2-3 min or more than 3 min/ day.

"What is your main method of brushing your teeth?"The response was horizontally or vertically or Circle brush or Rotating brush or Horizontal+vertical+ and by the gum at a 45 degree angle.

"How often do you replace your toothbrush?" The response was 3-6 month or more than 6 month or lower than 1 month or 1-2 month or 2-3 month.

"Do you use a soft-bristled toothbrush?" The response was no or unknown or yes. "Do you have a habit of using interdental brushes?" The response was no or yes. "Do you have a habit of eating snack?" The response was no or yes.

Item including that:

"How many times do you brush your teeth a day?" The response was (once or twice day or three times or fours times or more/ day).

"How long do you usually brush your teeth each time?" The response was lower than 1 min or 1-2 min or 2-3 min or more than 3 min/ day.

"What is your main method of brushing your teeth?"The response was horizontally or vertically or Circle brush or Rotating brush or Horizontal+vertical+ and by the gum at a 45 degree angle.

"How often do you replace your toothbrush?" The response was 3-6 month or more than 6 month or lower than 1 month or 1-2 month or 2-3 month.

"Do you use a soft-bristled toothbrush?" The response was no or unknown or yes. "Do you have a habit of using interdental brushes?" The response was no or yes. "Do you have a habit of eating snack?" The response was no or yes.

Item including that:

"How many times do you brush your teeth a day?" The response was (once or twice day or three times or fours times or more/ day).

"How long do you usually brush your teeth each time?" The response was lower than 1 min or 1-2 min or 2-3 min or more than 3 min/ day.

"What is your main method of brushing your teeth?"The response was horizontally or vertically or Circle brush or Rotating brush or Horizontal+vertical+ and by the gum at a 45 degree angle.

"How often do you replace your toothbrush?" The response was 3-6 month or more than 6 month or lower than 1 month or 1-2 month or 2-3 month.

"Do you use a soft-bristled toothbrush?" The response was no or unknown or yes. "Do you have a habit of using interdental brushes?" The response was no or yes. "Do you have a habit of eating snack?" The response was no or yes.