Biomedical subjects

Y Ibaraki

Publications and source records attributed to Y Ibaraki.

17 recordsLinked to original sources

PubMed1990

[Statistical studies of student clinical practice. 1. Clinical practice of operative dentistry from 1983 to 1989].

Clinical practice has been assigned as a final and very important aspect of study and practice of dental education. In our university, the students are exposed the clinical practice from the latter term of fifth year. This report investigated the protocols of clinical cases from the first to the seventh class of graduates. The results obtained were as follows: 1) The graduates of first class averaged 9 clinical cases. This decreased with the years and the fourth class averaged 5.5 cases. From the sixth class simulator training and mutual practice among the students was introduced and the total average of seventh class was 5.1 cases. 2) The dental practice centers on restoration and 20 percent of all cases were amalgam fillings from the first to four the class. However this decreased from the fifth class and does not take place at present. Composite resin restorations increased. Cast restorations occupied 20 percent of all cases and the proportion hasn't changed. 3) Clinical cases of graduates of fifth class who were first to include treatment between students averaged 7 cases. Mutual treatment practice is useful because of the increase exposure to clinical practice.

Clinical Clerkship↗

PubMed1990

[A study for non-asbestos casting liners. An experimental study of the adaptability of MOD casting to die].

Asbestos liners for investment metal casting has frequently been used in dental laboratory work. In recent years, the dangerous properties of asbestos to the human body were reported in Europe and the United States, and casting liners without asbestos were developed and marketed by many manufacturers. These are so-called non-asbestos liners. This study evaluated the adaptability of MOD inlay castings to dies using 8 kinds of commercial non-asbestos liners of ADA standard No. 2 specifications. The results were as follows; Single and double layers of Casting ribbon, New Asbestos Ribon, Shofu experimental, and KAOLIN showed good adaptation. Shofu experimental with a single layer showed the best marginal adaptation (10 microns). OVAL LINERS and CASTING LINERS with single layer showed good adaptation, but with double layers the adaptation was poor. In FLASK LINER, the double layer showed better adaptation than that with a single layer. Most non-asbestos liners used in this study are adequate in useful to MOD inlay castings.

Asbestos↗

PubMed1989

[The effectiveness of GaA1As semiconductor laser treatment to pain decrease after irradiation].

Recently, sedative and antiphlogistic treatment is conducted with low energy laser irradiation. The purpose of the this study was to evaluate the effectiveness to decrease of pain just after irradiation by a GaA1As semiconductor laser. The irradiation apparatus was SEMI LASER NANOX (LX-800: G-C. Co.) with the following features: a wave length of (around) 780nm: the laser energy, 30mW; exposure time, 30sec to 180sec/per treatment. Diagnosis of pre- and post-operative sensitivity were classified into the following four grades: Grade 0 no pain. Grade I mild pain. Grade II strong but tolerable pain. Grade III intolerable pain (simultaneous with stimulation). The results were as follows: 1. In the hypersensitivity of dentin, the treatment was not effective with 2 cases of grade III, but with all of grade I, II (35 cases) the pain decreased just after irradiation. 2. It was effective in all cases with pain like periodontitis after root canal filling and pain after extraction of teeth. 3. It was effective in all cases with gingivitis, stomatitis, and gingival ulcers after infiltration anesthesia etc..

Adolescent↗

PubMed1989

[Simulation with a pre-clinical training system. 1. Practice in operative dentistry using an experimental manequin articulator, jaw model, and artificial teeth].

Clinical practice with patients is the most important part of education for dental students. However there are considerable difference between lecture, basic practice, and clinical practice. Therefore it is difficult to go from basic practice to clinical practice. To overcome this, we developed and introduced a Pre-Clinical Training system using a newly designed manequin, articulater, jaw model, and artificial teeth. This manequin is very similar to patients in appearance. The mandibular part used a semi-adjustable arcon type articulator. The artificial teeth were made of two types of synthetic resins with different hardness for use in operative dentistry. The teeth also have caries areas made of soft black resin. Using this system, the students practiced oral examination, cavity preparation and restoration in operative dentistry.

Dental Articulators↗

PubMed1989

[Simulation with a pre-clinical training system. 2. Evaluation of the pre-clinical training system].

This study evaluated usefulness of the Pre-Clinical Training System. Undergraduate students and instructors at Higashi-Nippon-Gakuen University practiced class I composite resin restoration of the lower right first molar using the system. After the practice, they filled out questionnaires to evaluate the system. According to the results, this system proved useful for pre-clinical education though there is room for improvement.

Dental Restoration, Permanent↗

PubMed1988