Children and adolescents
Due to the role of self-cleaning teeth and anti-caries poor structural characteristics, coupled with not good brushing, food, soft dirt easy to stay in the tooth surface, 6 to 8 years old is the first caries peak in life. Deciduous teeth serious caries or premature fall off, will make the permanent teeth arranged irregular, and even affect the development of permanent teeth.
Primary and secondary students in the process of growth and development, due to congenital genetic factors or acquired environmental factors, such as disease, poor oral habits caused by irregular arrangement of teeth, upper and lower teeth between the location of the abnormal relationship. Dental discomfort to reduce the effectiveness of chewing teeth, severe can lead to indigestion and gastrointestinal diseases; teeth crowded plaque and calculus easy to attach, brush teeth is difficult to completely remove, prone to gum swelling, bleeding, mouth odor and other symptoms.
18 to 25 years old when the wisdom teeth eruption, due to the degeneration of the mandible, become smaller, wisdom teeth eruption often do not have enough position, eruption or resistance, in the gums and teeth between the formation of a deeper blind bag, food debris And bacteria are easy to accumulate, resistance to decline caused by pericoronitis.
Brushing method unreasonable cause the corresponding disease. Brush teeth are not in place, plaque, calculus deposition, induced periodontal disease, to promote gingival recession, alveolar bone resorption, severe periodontitis, loose teeth, shedding. Transverse brushing too much, so that the tooth neck groove (wedge-shaped defect), case of hot and cold stimulation of pain, severe development of pulpitis and even teeth broken.
Improper eating habits damage the teeth. Excessive bite of hard objects, including nuts and crabs, etc., cause tooth wear, dentin exposure, cold, hot, sour, sweet irritation irritation symptoms. If you are an inattentive, biting stones or bones, the teeth are momentarily subjected to excessive momentum, and the teeth are broken.
Elderly people have more or less gingival recession, the root exposed and the emergence of teeth, which not only affect the chewing, leading to eating fiber when the plug teeth, and teeth clean difficult, easy to accumulate teeth, and then increase the root surface Of the caries.
Most of the elderly there is a lack of teeth, in addition to the impact of digestion, the absence of teeth so that the remaining teeth to bear the chewing pressure increased, if the chewing force exceeds the limit, resulting in residual tooth trauma and gingival recession, alveolar bone absorption, loose teeth Periodontal disease. If there is no denture for a long time, may lead to its adjacent teeth to the teeth of the gap within the tilt, shift, there are teeth disorder, increased periodontal disease.