Subjects will receive thermal water/sodium fluoride toothpaste (BUCCOTHERM® Sensitive Gums with Fluoride)

Subjects will receive thermal water toothpaste (BUCCOTHERM® Sensitive Gums Fluoride-Free)

Toothbrushing using standardised technique and pear-sized amount of toothpaste BUCCOTHERM® Sensitive Gums with Fluoride twice daily for 1 month.

MGI is used to assess visual symptoms of gingivitis on facial and lingual surfaces of each scorable tooth (whole mouth). Two scores are recorded buccally/labially, two scores lingually/palatally. Values are presented as means across all tooth surfaces with minimum and maximum scores in agreement with minimum and maximum index values (i.e., 0-4). Scoring is performed using standard dental light:0=absence of inflammation,1=mild inflammation;slight change in color,little change in color; little change in texture of any portion of the marginal or papillary gingival unit,2=mild inflammation; criteria as above plus the entire marginal or papillar gingival unit,3=moderate inflammation;glazing, redness, edema, and/or hypertrophy of the marginal or papillary gingival unit,4=severe inflammation; marked redness, edema and/or hypertrophy of the marginal or papillary gingival unit,spontaneous bleeding,congestion,or ulceration. Lower scores indicate better results.

BI is used to assess bleeding elicited on probing as a measure of gingival condition. Gingivae are air dried and examiner assesses bleeding using a probe which is gently inserted into gingival crevice to depth of app 1 mm and run around tooth (angle of app 60 deg to long axis of tooth), gently stretching epithelium while sweeping from interproximal to interproximal along sulcular epithelium. BI is assessed on facial and lingual gingival surfaces of each scorable tooth (whole mouth). 3 scores are recorded buccally/ labially, 3scores lingually/ palatally. All scorable teeth in one quadrant are probed first (app 30 sec) before recording number of gingival units which bleed. Values are presented as means across all tooth surfaces with minimum and maximum scores in agreement with minimum and maximum index values (i.e., 0-2). BI score:0=no bleeding after 30 sec, 1=bleeding upon probing after 30 sec,2=immediate bleeding. Lower scores indicate better results.

First, the tooth is isolated by the cotton roll from the adjacent teeth. Next, a blast of air from a standard dental unit syringe at 60 ± 5 psi at 18-22 °C is directed onto the exposed middle 1/3 buccal surface for 1 s at a distance of approximately 10 mm. Then, each patient reports the sensitivity he/she sensed using Schiff Cold Air Sensitivity scale scored from 0 to 3: score "0" means no response, score "1" means response without request of discontinuation of stimulus, score "2" means response with request of discontinuation of stimulus, and score "3" means pain with request of discontinuation of stimuli. Lower scores indicate better results.

Nine sites per facial and lingual tooth surface are assessed, for a maximum 504 sites total (excluding 3rd molars, crowns, and surfaces with cervical restorations). Disclosed plaque is scored in each tooth area as follows: 0 = Absent; and 1 = Present. A mean plaque index (MPI) is calculated for each subject on a whole mouth basis. Lower scores indicate better results.