Articulating paper with a thickness of 30 μm is widely available in a daily dental practice. It can be usually used through color marking of the occlusal contacts on the occlusal surface of the tooth, observing the semi-transparent portion of the paper after biting, and pulling the paper during biting. When seating an artificial crown in the mouth, acceptable height of crown can be obtained with combination of these methods. Analyzing the semi-transparent portion of the paper after biting has been conducted comparing with silicone materials for the occlusal registration. However, the occlusal record of the color marking of the occlusal contacts has not been enough utilized because of uncertainty of the method. In this study, usefulness of the color marking method for the analysis of the occlusal condition was studied through long-term recording.

Geometric analysis has revealed that the compatibility between the occlusal facets and the occlusal reference surface is required to achieve the functional form of occlusion that is in harmony with the jaw movement. However, the findings of the craniomandibular control system revealed that the alteration of occlusion also altered the jaw movement per se. Such effects are caused by the reflex action elicited by occlusal contacts. Index B that exhibits the ratio of jaw movement parameter with or without occlusal contact will be a valid indicator to evaluate reflex action with occlusal contact. It is important to eliminate harmful occlusal interferences, but restoring the missing occlusal contact is also significant to achieve the desirable occlusion.

The aim of this prospective clinical study was to evaluate the changes in oral health-related quality of life (OHRQOL) due to dental treatment for patients, and to evaluate the influence of the type of interventions. 127 patients who underwent dental treatment were selected. Chronological QOL change during dental treatment was measured. The subjects completed the Hobo occlusion score (HOS) and shortened Japanese version of the Oral Health Impact Profile (OHIP-J14) before and after dental treatment. Complete data of the 127 subjects were analyzed with the Wilcoxon signed-rank test. The results showed that total HOS and OHIP-J14 score were significantly reduced after dental treatment. The results showed that the HOS is clinically sensible, reliable, valid and responsive for patients who need dental care.

The purpose of this paper is to report on the survey of long-term (20 years or longer) single tooth implant cases. The subjects of this survey were 32 cylinder dental implants (POI^® implant: KYOCERA) in 30 patients, placed at 3 clinics (members of Kyoto Institute of Implantology), lasting for 20 years or longer with the superstructure, as of May 2015. The survey items included: age at the time of implant placement, placed regions, size of implants, and attachment modalities of the superstructure. The average age at the time of implant placement was 47.31 years old (male 47.95, female 46.25 years old); 29 cases employed one-stage surgical placement procedure while 3 cases two-stage surgical process. As for the diameter of the implant fixture, in 17 cases was used 3.2 mm, 11 cases 3.7 mm, and 4 cases 4.2 mm while all the two-stage placement cases employed fixtures with a 3.7 mm diameter. As for the intraosseous length of the fixtures, 4 fixtures were 8 mm, 15 fixtures 10 mm, 8 fixtures 12 mm, and 5 fixtures 14 mm while in all the two-stage procedures were employed 10 mm long fixtures. As for the placed region, most of the implants for both the upper and lower jaw were placed in the posterior region while all the two-stage implants were placed in the premolar region. The breakdown of the attachment modalities of prostheses was as follows: 22 cases were cement-retained and 10 cases screw-retained while prostheses for two-stage implants were cement-retained.

In the maxillary posterior region, not only the quality of the bone is lesser, but also the volume of the bone tends to be insufficient. For this reason, sufficient intraosseous length of the fixtures is seldom secured. When the preoperative bone height is less than 10 mm, stability of implant cannot be established by the existing bone alone; socket lift, however, enables implant placement into the prosthetically ideal position. Amongst various sinus floor elevation procedures, lateral window technique and socket lift are considered as the standard methods and less invasive socket lift has been reevaluated. The present paper is to report on the clinical assessment of maxillary posterior implant treatment in combination with socket lift, covering 181 implants placed between 1992 and 2011, in 150 patients, who received the socket lift treatment at 4 clinics, members of Kyoto Institute of Implantology. The result of the survey, demonstrating applicability of socket lift to various prosthetic options and a high 10-year survival rate of implant (96.7％), suggested its clinical effectiveness.

This is a case of a patient (age 58) with Angle class II malocclusion, involving loss of a few teeth and anterior guidance, but the patient initially requested only a partial treatment. I could, however, gradually obtain the patientʼs trust as I was set to the patient over the course of basic periodontal therapy. As a result, I was able to shift to full mouth treatment based on the full mouth examination and diagnosis. Replacing the molar part with a temporary crown, I corrected the occlusal vertical dimension and the occlusal plane and searched for a stable mandibular position. In addition, occlusal support was obtained up to the second molar by implant treatment replacing the defect. The anterior guidance was obtained by partial correction of the prostheses of the maxillary anterior teeth and limited orthodontic treatment of the mandibular anterior teeth. By creating provisional restorations from the diagnostic wax-up and replacing them with the final prostheses, stable occlusion was obtained.