Effectiveness of Mobile-based Application on Dental plaque, Gingivitis and White spot lesions in Pregnant Women

INTERVENTION: Intervention 1: Control group: People in the control group will receive the oral‐dental hygiene principles orally by the dentist. In addition, brochures prepared about oral‐dental hygiene will be given to the control group. Intervention 2: Intervention group: Pregnant women in the intervention group, in addition to receiving oral‐dental hygiene principles and oral‐dental hygiene brochures, will also receive a mobile‐based self‐care application. CONDITION: Oral‐Dental Hygiene. PRIMARY OUTCOME: Dental plaque index. Timepoint: At the beginning of the study (before the intervention), one month after using the application and three months after using the application. Method of measurement: Plaque disclosing tablet and Plaque ontrol record (O'Leary index). Gingival Index (GI). Timepoint: At the beginning of the study (before the intervention), one month after using the application and three months after using the application. Method of measurement: Loe and sillness index. White spot lesions. Timepoint: At the beginning of the study (before the intervention), one month after using the application and three months after using the application. Method of measurement: Visual examination method. INCLUSION CRITERIA: Age between 25 and 35 years Willingness to participate in the study Having a smart phone Ability to work with applications Gestational age of the second and third trimesters of pregnancy (from the 15th week to the end of delivery) Pregnant women without tooth decay and gum disease