To date, implant treatment has been suggested to be an effective treatment and the first choice for the restoration of missing teeth. In this case, the patient has lost vertical stop for years due to missing molars; in order to prevent further occlusal collapse, we chose implant treatment for the patient. The full-mouth comprehensive treatment seems to be the best solution. However, due to some personal reasons; and also, the occlusion relationship of remaining teeth was still acceptable, we decided to place implants only in molar area. By means of implant treatment, remaining teeth were protected and the vertical stop was rebuilt, which may significantly improve the quality of life (QOL) of the patient.

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The periodontal treatment is generally devided into several steps. Namely, the elimination of inflammation or risk factors, clinical examination and diagnosis, treatment and maintenance. The tooth diagnosed with hopeless prognosis should be extracted at the point of clinical examination. Sometimes, however, we need to change the treatment schedule depends on the patient' s willingness. For instances, some patients do not want their own tooth be extracted even they know the corresponding tooth has hopeless prognosis. Once the patients lost their willingness to be treated, the overall prognosis might be influenced. For these circumstances, it should be extreamly important to make an effort to maintain the tooth in cooperation with the patiens. These efforts will make the patients actively join to the treatment and think about the importance of tooth maintenance.

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In recent days, endodontics has been considered as a method of“foundation restoration”, which includes root canal treatments and core buid-up.
The success rate of root canal treatments has improved thanks to the development of various nickel titanium files, and the introduction of the microscope. On the other hand, pollution of the root canal after a root canal obturation due to coronal leakage (a leak from the crown of a tooth side) has been brought to question.
On this occasion, I am reporting on root canal obturaions in foundation restoration. In addition, I am reporting about some appliances which are helpful in micro-endo treatment, which are yet to become popular in Japan.

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The long-term prognosis for osseointegrated implants has been proven and implant therapy is recognized as highly predictable treatment method. And more patients undergoing implant therapy have been expecting an improvement in esthetics as well as function.
Such as implant restorations require a thorough diagnosis and a definitive treatment plan. Following a diagnostic wax-up, an optimal diagnostic template must be fabricated.
This article describes a procedure for the fabrication of a diagnostic template for an implant superstructure in the multiple missing teeth case of maxillary that uses information obtained with the treatment denture.

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It is necessary in prosthodontics planning that the sinus lift operation be adapted to the posterior maxilla in implant treatment, especially if bone quantity is insufficient for placement in these areas. The present paper describes many clinical cases that showed the successful function of implantsupported prosthesis in all patients following a maxillary sinus lift procedure. But usual sinus have to be examined closely using CT because it is difficult to read an image of a three-dimensional anatomically structure by panoramic radiographs like the Orthopantomograph. This clinical report presents a safer sinus lift procedure including cases with anterior superior alveolar arteries, the use of three-dimensional jaw bone models created from 3-dimensional computed tomography scan data and the fabrication of surgical stent for use as an operative index.

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There is much variation in the terminology for Sinus Augmentation in the literature. It has been known as Maxillary Sinus Elevation, Maxillary Lift, Maxillary Sinus Augmentation, and Subantral Augmentation. No matter what its name, Sinus Augmentation is the surgical procedure when the floor of the sinus is low and the sinus membrane needs to be lifted up in order to gain sufficient bone height for implant placement.

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Masticatory movements are complicated movements based upon individual habits. In dental practice, mandibular movements have routinely been reproduced using an articulator. At present, various kinds of adjustable articulators are available which claim to be able to reproduce individual mandibular movements.
However, there are many indecations that it is extremely difficult to reproduce individual matiscatory function on articulator.
This presentation investigates the reasons for this difficulty by undertaking clinical case studies of patients with temporomandibular disorder (TMD) treated with physiotherapy, including chiropractic procedures.

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Temporomandibular joint disorder (TMD) is still considered to be difficult to treat in the daily clinical practice. However, TMD treatments from viewpoint of the Kamiguse (the habitual first stroke of mastication) have been becoming more popular and obtaining good results. In this paper, we explained how to treat and release the trismus patients together with viewpoint of the Kamiguse.

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Japanese TMJ Societies classification of the type III-b Temporomandibular-Disorder is a craniomandibular disorders with limited mouth opening. Prediction of the treatment outcome before treatment is valuable in today's dentistry in any treatment. Information on prediction of the treatment outcome in TMD was quite limited. The Clinician performs various examinations on patients. This study will analyses 30 patients with type III-b TMD. Correlation between all the examination data was analized. Partial correlation coefficient was calculated after removing influences of age and sex. Behavioral modification, manipulation, Mouth opening excise were applied as treatment.
In duration of the treatment, it became clear that the category of CMI, the existence of a subjective occlusal instability, and the tenderness level of a medial pterygoid muscle and a lateral pterygoid muscle are important. Formula includes category of CMI, and occlusal instability sensation gives multiple regression coefficient R=0.675 and adjusted R square was 0.414.In the mouth opening, tenderness at insertion of the Masseter and area of Mental foramen showed correlation. However, estimation of absolute value of opening seemed be difficult. In change of mouth opening after treatment, mouth opening at before treatment showed significant negative correlation. Patients with back neck tenderness showed lesser change.

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It is difficult to lead periodontal treatment to success. How will words of periodontal disease be recognized by the public? We did a questionnaire survey to know recognition of periodontal disease and opinion of the patient. From this survey, we were able to know a true opinion for periodontal treatment from the patient.

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Although a surgical treatment and/or medication have been frequently used when a perio-derived fistula developed, it is desirable to minimize these treatments as far as possible. Under the guidance of dentist so as not to exceed the range of dental hygienic work, therefore, we recently performed a close examination on the site of fistula by inserting a plastic probe from the accused fistula and its periodontal pocket without anesthesia. Through this examination, the existence of a zone where the two points are coincided with each other, that is, PF (Pocket Fistula) zone, was revealed.
After the plastic probing was performed from the fistula and its periodontal pocket, a modified ready-made instrument was further inserted into the PF zone followed by scaling, root debridement and irrigation. As a result, the perio-derived fistula could be easily restored with the subsequent bone reproduction without missing the accused tooth. From these evidences mentioned above, the clinical efficacy of PF zone method on perio-derived fistula was confirmed. In this PF zone method, a use of plastic probe plays the most important role.

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[in Japanese]

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The appropriate mandibular position is diffucult to locate in orthodontic patients with temporomandibular joint (TMJ) disk displacement. Even if there are no clinical temporomandibular disorder (TMD) symptom, their orthodontic treatments are still complicated, and may not be successful results due to their unstable mandibular position. In the case of common malocclusions with TMD, the patients often complain not only pain and trismus but also their facial asymmetry. Since it is difficult to establish the mandibular position, we, orthodontists, suffer to obtain their appropriate occlusions. Their ideal mandibular positioning should reduce the condylar head loading, and obtain stable occlusion.
This paper reports treatment of patients with facial asymmetry following anterior displacement of the articular disk. Facial symmetry and stable mandibullar position were achieved by recapture of the articular disk.

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