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The article presents a study which evaluates the prognosis of IMZ implants cases performed at the hospital attached to the Nippon Dental University School of Dentistry in Niigata-shi, and Enomoto Dental Office in Sanjo City in Japan. It details the method of the study and the evaluation of the patient's survival rate, maxillo-mandibullar, and implant survival rate. The result of the study reveals that IMZ implant has achieved a long-term survival rate and it is useful for clinical application.

The article offers information on the application of the scientific research instrument for stomatognathic functions in constructing a virtual articulator in Japan. It states that a tracing mandibular movements of a patient was re-created. It shows that the relationship between mandibular movements and the occlusal pattern was visually built and the simulation of various occlusal conditions became possible by the virtual articulator.

This study investigates the differences in condylar position between centric relation (CR) and centric occlusion (CO) in Japanese orthodontic patients before treatment. We employed 150 consecutive cases (age range: 6-57 years) for the study. Dental casts were mounted on a Panadent articulator with a power centric CR bite record. The differences in condylar position between CR and CO in all three spatial planes were measured using the Panadent Condyle Position Indicator (CPI). The subjects were divided into groups by age, gender, mandibular plane angle or angle classification. No significant differences in the magnitude of CPI measurements were found among the groups. The three-dimensional distances of condylar displacement on both sides were almost identical, and the superoinferior displacement (S-I) was greater (P < .0001) than the anteroposterior displacement (A-P). The S-I was greater (P = .02) on the left side than on the right side, while the A-P displacement was smaller (P < .0001) on the left side than that on the right side. Significant condylar displacement (2.0 mm for S-I and A-P, 0.5 mm for the lateral displacement, L) was found frequently in L (31.3%), S-I, and A-P, in that order. Fifty-eight (38.7%) of the subjects had significant displacement in L, S-I, or A-P. Moreover, Angle Class III subjects tended to have significant condylar displacement toward the left side. The results suggest that orthodontists should be aware of a high incidence of condylar displacement in Japanese orthodontic patients and measure condylar displacement before the start of comprehensive orthodontic treatment to unmask real jaw relationships and avoid possible misdiagnoses.