First, dentition symmetry:
The shape and position of the teeth corresponding to the upper and lower jaws on one side should be similar, and the dentition on the left and right sides should be symmetrically distributed. Symmetry of dentition helps to maintain the balance and stability of the whole occlusion and provides a symmetrical and beautiful appearance.
Second, the center line is consistent:
The midline of the upper and lower jaws should coincide at one point, that is, the midline of the upper and lower jaws should coincide. The consistency of midline contributes to the occlusal function of teeth, maintains the balanced distribution of occlusal force, and reduces the discomfort and problems caused by the inconsistency of midline.
Third, the pitch is appropriate:
In a normal dentition, a proper gap should be kept between teeth, neither too large nor too small. Proper tooth clearance is beneficial to oral hygiene, convenient for cleaning toothbrush and floss, and reserved space for teeth that may need to be repaired or corrected in the future.
Fourth, the vertical dimension is reasonable:
The vertical height of dentition should be determined according to the individual's unique maxillofacial structure and occlusal needs. Reasonable vertical size can maintain normal chewing function and avoid chewing difficulty and discomfort caused by too long or too short dentition.
Five, stable tooth arrangement:
The stability of tooth arrangement means that the position of teeth in occlusion remains stable and it is not easy to move or tilt. Stable tooth arrangement is helpful to maintain the balance of occlusal relationship and reduce the risk of tooth displacement and dentition disorder.
Six, bite balance:
Occlusal balance refers to the uniform distribution of contact force and bite force between upper and lower teeth. Normal occlusal balance can provide effective chewing function, reduce the pressure of oral cavity and temporomandibular joint, and prevent tooth wear and temporomandibular joint pain.
Seven. Summary:
A good occlusal relationship of natural dentition requires conditions such as symmetrical dentition, consistent midline, proper tooth spacing, reasonable vertical size, stable tooth arrangement and occlusal balance. The achievement of these conditions can be promoted by orthodontic treatment, the cultivation of normal chewing habits and the maintenance of oral hygiene, thus maintaining the good state of oral health and overall occlusal function.