1980 年 2 巻 1 号 p. 7-16
Recently the importance of creating “the conditions of excellent chewing for a long time”is being stressed more and more at dental clinic. Oral surgery, endodontics, periodontics, orthodontics and pzosthodontics are treated as one. But occlusion is the key to it. The theory and technic of the occlusion are only seldom applied at the clinic because of difficulty and misunderstanding that valuable instruments are always necessary.
The diagnosis and treatment of occlusion should be performed smoothly at the clinic on a day to day basis thus the technic should be made more simple, precise and done more quickly.
Condyler path inclination of a semiadjustable articulator is adjusted by check bit, results differ from dividual dentists. Thus a pantograph is thought, to be a good idea to adjust the semiadjustable articulator. At the same time, it is also necessary to judge which period of the pantograph survey line is the best.
There is not a definite standard to adapt the occlusal plane at the clinic. HIP plane being established considerably stable three points are taken as the occlusal plane for both a dentulous jaw and an edentulous one.
Protrusive condyler path and the occlusal plane take the angle of twenty-six degrees on average. HIP plane can be applied for not only diagnosis but also treatment. Most of the occlusal plane runs parallel with Camper's line after the treatment.
Though condyler path, incisal path and occlusal plane, are known to be important for making therestoration harmonize with the mandibulor movement, its untantunate the restoration is still often made through trial and error at the clinic. In future it is hoped that their relationship can be more accurately detined to be explined the relation between with them.
Chewing means not only just a faculty but an efficient one and it is the aim that all the treated teeth must be healthy for ever. The more dentists perform the treatment based on the occlusion, the more patients will be helped. It is the real point of gnathology.