crowded teeth
Introduction
Introduction to crowded dentition Crowded crowds are the most common of malocclusions, which can be characterized by misalignment of tooth crowding; the incidence of caries and periodontal disease in crowded teeth is higher than that of normal teeth. The same crowded dentition has a very obvious effect on the appearance. In severe cases, it is difficult to close the lips and form open lips and teeth. Crowded crowds are divided into simple crowding and complex crowding. Simple crowding is manifested by the disorder of the teeth due to insufficient gap, and thus affects the shape and occlusion of the arch; simple crowding can be regarded as a dentition, usually without the relationship between the jaw and the arch, and there are few mouths. The function of the jaw system is abnormal, the molar relationship is neutral, and the facial shape is basically normal. In the case of complex crowding, in addition to the crowdedness caused by the imbalance of teeth, there is also a relationship between the jaw bone and the dental arch, which affects the shape of the patient, sometimes accompanied by abnormal function of the oral and maxillofacial system; crowded itself during complex crowding It's just a symptom, not the main aspect of the mismatch. basic knowledge The proportion of illness: 0.006%-0.008% Susceptible people: no special people Mode of infection: non-infectious Complications: dental caries
Cause
Dentist crowded cause
1. Genetic factors Crowded crowds have obvious genetic characteristics. From the crowded dislocation of individual teeth or the crowding of most teeth, even the degree of torsion of a tooth can have the same performance in the parent and offspring. This genetic feature is Objectively existed, but the detailed genetic mechanism is still not fully understood.
2. The failure of the replacement period of the tooth replacement period is a common cause of crowding of the teeth. For example, due to the early loss of the deciduous teeth, the adjacent teeth move forward to occupy the missing tooth gap, resulting in insufficient gap of the permanent teeth eruption and dislocation, and another deciduous retention. Can cause successive permanent teeth to be erroneous.
3. Jaw development is insufficient. The lack of bone development causes a large amount of bone mass to be irregular. The teeth cannot be arranged neatly in the alveolar space, and the crowd is misplaced.
4. Too large teeth Due to the excessive width of the teeth in the near and far, the teeth may be crowded and misaligned.
5. Bad habits Some bad oral habits, such as children's fingers, mouth breathing, etc., can cause the arch of the jaw to narrow or affect the development of the jaw, and the teeth are crowded.
Prevention
Dentition crowd prevention
1 Whether the child has bad licking, licking tongue, biting lip habits, parents should be patiently instructed to correct these habits;
2 During the tooth replacement process, do children have signs of permanent tooth malposition, or whether there is permanent tooth growth, etc. It is safer to take the child to the stomatology for routine examination during the tooth replacement process. The doctor will make recommendations according to the situation. of;
3 pay attention to the child's food composition, should give children as much as possible to eat cellulose-rich foods, so that the chewing function can fully play and stimulate the development of the jaw. If parents pay attention to the above points and actively assist the child to prevent, then the teeth are not aligned. The development trend may be curbed, or the degree of development may be reduced, but in many cases, especially in the presence of congenital or genetic factors, the occurrence and development of dentition is difficult to use alone. Can control, so that the vast majority of dentition needs to be corrected before it can be corrected.
Complication
Dentition crowding complications Complications
Severe teeth have irritating lips, cheeks, and tongues that cause discomfort. In addition, the adjacent faces of crowded teeth are prone to caries.
Symptom
Congestion of dentition common symptoms dentition crowded toothache teeth crowded misplaced misaligned oral lip ligament thick locks deformed teeth excess
1. The small amount of bone is normal and the width of the proximal and distal diameter is normal, and the length of the arch is insufficient. In particular, the development of the anterior maxilla tends to cause crowding of the anterior maxilla.
2. The amount of teeth is as large as the dentition formed in the anterior region of the jaw and the tooth width is too large.
3. Indexing For the purpose of clinical diagnosis, the crowded dentition is generally divided into light, medium and heavy by 3 degrees according to the severity of its crowding.
Mild crowding (I°) The gap between each arch is less than 5mm.
Moderately crowded (II°) The gap between each arch is less than 10 mm.
Severe crowding (III°) The gap between each arch is more than 10mm.
The clinical manifestation is that the teeth are crowded and misaligned, mainly because the amount of teeth is larger than the amount of bone, and the shape of the arch is abnormal.
Examine
Crowded inspection
Check that the teeth are normal or too wide, the teeth are misaligned in various directions, the arc of the arch is irregular, and the left and right may be asymmetrical. When the unilateral crowd is crowded, the midline is often crowded, and the anterior wall of the maxillary sinus is concave. The upper and lower jaws are undercrowded, and the upper and lower teeth are crowded. Individual anterior teeth may be over-covered, over-covered, and have a reverse relationship, or no contact.
Diagnosis
Dentist crowding diagnosis
It can be diagnosed according to the clinical, no need to identify.
