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Volume 28 (1986)
- Issue 4 Pages 963-
- Issue 3 Pages 785-
- Issue 2 Pages 445-
- Issue 1 Pages 1-
Volume 28, Issue 3
Displaying 1-10 of 10 articles from this issue
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SHIRAKI Masafumi1986 Volume 28 Issue 3 Pages 785-799
Published: September 28, 1986
Released on J-STAGE: November 29, 2010
JOURNAL FREE ACCESSThe aim of this study was to determine the contents of glycosaminoglycans (GAG) in the epithelium and the subepithelial connective tissue separated from the gingiva, and to examine the incorporation of 3H-glucosamine into GAG in vitro. After collecting clinically healthy gingiva from a mongrel adult dog and separating it into the epithelium and subepithelial connective tissue, a qualtitative of GAG extracted from both these tissues was made using the two-dimensional electrophoresis. The results showed that GAG was composed mainly of hyaluronic acid and heparan sulfate for the epithelium, and hyaluronic acid and dermatan sulfate for the subepithelial connective tissue respectively. Coincidentally with the results of the biochemical analysis, autoradiographic findings revealed plenty of grains in the gingival epithelium. The above findings suggested that GAG composition ratio was different for the epithelium and the subepithelial connective tissue and that metabolic turnover was rapid for epithelial GAG.View full abstractDownload PDF (5255K) -
Tsunekazu MAKINO1986 Volume 28 Issue 3 Pages 800-812
Published: September 28, 1986
Released on J-STAGE: November 29, 2010
JOURNAL FREE ACCESSThe present study attempted to explore the newly synthesized phosphoproteins secreted by osteoblastlike cells and fibroblasts from rat pup calvaria and skin. The phosphoproteins, which are non-collagenous proteins, are posttranslationally phosphorylated by the kinases and secreted into the extracellular matrix and medium in the osteoblast-like cell and fibroblast cultures. The osteoblast-enriched cell population and fibroblast isolated from 2 day-old rat calvaria and skin by sequential enzymatic digestion were cultured in a defined medium containing fetal calf serum protein (2mg/ml). At confluence, these cells and fibro blasts obtained from the 3rd isolated cells were incubated with 32Pi (Na2H32PO4, NEX-011) for 24 hr. The TCA precipitates of the medium were applied to hydroxyapatite column eluted by a stepwise of 6 mM, 0.1 M, 0.5M and 1.5M Pi Hepes buffer pH 7.4 containing 3M urea and 5mM levamisole. The 0.5M Pi eluted fractions of osteoblast-like cells and fibroblasts were electrophoresed on a 10% SDS-polyacrylamide gels for autoradiogram. The molecular weight of hydroxyapatite binding phosphoproteins synthesized by cultured cells were estimated 75K, 66K, 58K, 38K and 15.5K for osteoblast-like cells and 15.5 K for fibroblasts. The phosphoproteins, which can bind tightly on hydroxyapatite, may regulate the mineralizing processes.View full abstractDownload PDF (1542K) -
A Fundamental Study on the Root Planing with Various Kind of Root TreatmentJunichi KIMURA, Akio TSUCHIYA, Shinobu HONDA, Kyuichi KAMOI1986 Volume 28 Issue 3 Pages 813-824
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSThis study was aimed at determining the permeability of the isotope 35S (Na2 35SO4 solution) into the dental root using teeth extracted due to periodontal disease. The teeth were subjected to three different pretreatments, i. e ., cleansing, root planing, and dentin exposure plus root planing. After immersing in 35S, the specimens were subjected to three different after treatments: no after treatment (pretreatment alone) ; mechanical cleansing with a robinson brush; and root planing. Each specimen was then observed for the permeability of 35S by light microscopy and autoradiography. The results obtained were as follows. 1. When the cementum was preserved on the root surface in pretreatment, the root surface subjected to mechanical brushing or root planing in after treatment showed a narrower zone of lower optical density in the autoradiogram than did the root surface subjected to no after treatment. This indicated that 35S was mainly attached to the root surface on which the cementum was preserved. 2. Autoradiography of the root surface subjected to mechanical brushing as an after treatment showed that 35S penetrated to a greater extent into the cellular cementum than into the acellular cementum. 3. When the dentin was exposed in pretreatment, the root surface subjected to root planing in after treatment showed a narrower zone of lower optical density in the autoradiogram than did the root surface subjected to mechanical brushing.
On the other hand, there was no marked difference between the root surface subjected to no after-treatment and that subjected to mechanical brushing. This indicated that 35S permeates through the dentinal tubules inside the dentin just under the root surface.View full abstractDownload PDF (4808K) -
Yoshiaki ANDOH, Masaki KURIHARA, Motoyuki SUZUKI, Hajime MIYASHITA, Ko ...1986 Volume 28 Issue 3 Pages 825-836
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSDestruction of periodontal tissues become severe when periodontal inflammation co-exists with excessive occlusal force. Of the types of occlusal factors, bruxism considering the strength, time interval, and working direction, is considered to be the most influ -encing on periodontal tissues .
In this study, the nocturnal bruxism was recorded by utilyzing the Grinding Monitering System (GMS) developed by Uraguchi. The recorded sound was analyzed by the FFT analyzer . The periodontal condition of the 6 subjects on the time of initiating the experiment was almost healthy . The equipment, tape and questionaire was taken home. On awakening, the sleeping and awakening time, and the answers to the questionaire was recorded. After one month, the tape was recovered, and the time-axis frequency and the frequency components were considered.
As a result, bruxism which lacks objective parameters and is difficult to classify according to audible sound, was found to be capable to be classified from the distinctive features of the time-axis frequency and frequency components. Moreover, it was found that bruxism involves a certain personal rythm.View full abstractDownload PDF (1270K) -
3. Morphological Analysis of Occlusal Contact Area in the Lateral ExcursionsKitetsu SHIN, Hisao ARAKI, Takashi MIYATA, Tadao MIYAKE, Keiji NAKAJIM ...1986 Volume 28 Issue 3 Pages 837-848
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSmorphological analysis of premature contact area in the lateral excursions. The subjects were staffmembers of the Josai Dental University, PDI Saitama Dental Clinic who had normal occlusal function in clinically. The measurements were made using the Gothic Arch Tracer and the outside marking system which fixed in the dental arch by conforming to Nakao's method and concerning the measurement of the OCA and LG 1° conforming to Miyata's method and the study on the form of contact area, carried out by new software on a personal computer.
The results were as follows;
1. In the changing of OCA on lateral excursions, almost all 1st. and 2nd. molars gradually showed decrease for a short period (type 1), but 1st. and 2nd. premolars showed increase (type 2) or begin with a decrease and after that increase (type 3) for a short period. In cuspid rather showed type 2, 3 and no big changing (type 5).
2. In the changing of OCA on lateral excursions, almost all 1st. and 2nd. molars showed type 1, but 1st. and 2nd. premolars showed much of type 2, 5.
3. In the obserbing form of contact area, premolars showed a tendency of changing from the level to the circle form for a short period, but in cuspid showed a tendency of changing to an increasing form.View full abstractDownload PDF (3754K) -
Masatoshi UEDA, Yoshiki INADA, Yoshio KOUTSU, Akira YAMAOKA, Yasunori ...1986 Volume 28 Issue 3 Pages 849-854
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSIn an attempt to determine how the degree of the experimental calculus removal and roughness of the metallic plate would be affected by air scaler and ultrasonic scaler, quantitative measurement and morphological studies were made.
The results obtained were as follows:
1. On the calculus removal, larger effect was obtained by ultrasonic scaler than by air scaler.
2. On the roughness of the metallic plate, larger defect was observed by ultrasonic scaler than by air scaler.
3. Like rippling waves were observed under ultrasonic scaler and air scaler scanning electron microscopically.View full abstractDownload PDF (1619K) -
Effect of Strokes and Applied Lateral Pressure -on Sharpness of Scalers-Yasunari ISHIZUKA, Yutaka OSADA, Isao ISHIKAWA1986 Volume 28 Issue 3 Pages 855-862
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSWith increasing emphasis of the importance on the scaling and root planing in periodontal therapy, the sharpness of hand instrument has gained much attention.
The purpose of this study was to investigate the effect of strokes and lateral pressure applied to instruments on sharpness of the cutting edge of curet scalers during instrumentation.
Scaling tester ® made of epoxyresin and dentin planes from dried human extracted teeth weresubjected. It was evaluated how many strokes of instrumentation were required to dull the cutting edges of curet scalers on condition that each lateral pressure constantly applied to instrument. All instrumentation was carried out by one clinician.
Following results were obtained.
1) Turnning point of sharpness of scaler was observed after about 40 strokes of instrumentation under the condition that materials were Scaling tester ® and applied lateral pressure was 500 g.
2) Turnning point of sharpness wasobsetved after 50-60 strokes under the condition that materials were dentin planes and applied lateral pressure was 750g.
3) On condition that materials were dentin planes and applied lateral pressure was 500g, turnning point of sharpness was observed after about 50 strokes. 4) When applied lateral pressure was 250g and materials were dentin planes, turnning point of sharpness could not be detected. In this case, the sharpness was gently changed.View full abstractDownload PDF (1430K) -
The First Report-Clinical Symptoms -in the First VisitHajime WADA, Takamichi YANAGISAWA, Toshiaki ISHIKAWA, Teruko KUNITOMI, ...1986 Volume 28 Issue 3 Pages 863-870
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSThe aim of this study was to examine the various clinical symptoms in the first visit of patients suffering from periodontal diseases to our outpatients clinic. The study sample consisted of 102 patients, whose chief complaint in the first visit was related to periodontal problems. Plaque deposition, pocket depth, and the correlation of these two factors were mainly investigated. The results obtained were as follows.
1. Upper and lower molar, and lower anterior regions showed high plaque scores when compared to other regions.
2. Pocket depth tended to increase toward the molar regions.
3. Plaque scores of proximal surfaces were the highest followed by lingual, and buccal surfaces, the buccal surfaces presenting the lowest plaque scores. However, no relationship was obtained between the plaque scores of medial and distal surfaces.
4. Pocket depth of medial and distal surfaces were deeper than those of central areas in all teeth.
5. In the upper region, pocket depth of palatal surfaces exhibited high value compared with that of buccal surfaces. This tendency was not almost observed in the lower region.
6. A strict direct correlation between plaque scores and pocket depth was not always obtained, specially in the lower region.View full abstractDownload PDF (844K) -
Itaru MIKAMI, Masutaka UENO, Akihiko OKABE, Akihiko KONO, Koichi FUKAI ...1986 Volume 28 Issue 3 Pages 871-893
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSThis study was carried out to know the state of Periodontal surgery cases which were performed in our clinic.
From the study, the following results were obtained.
1. Sum of the operative cases during one year 1985) were 162 cases (98 males and 64 females) (and the average of patient's age was 45.8 years old.
2. The relation between the progress of the periodontitis and the operated cases were as follows. Mild periodontitis) : 14.4%, Modelate: 50.6% and Severe: 35.0%
3. On the purpose of these operations, the elimination of periodontal pockets and improvement of furcation involvements occupied 88% of the cases. On the other hand, improvement of mucogingival problems are 8.1% of the cases.
4. On the classification of these operations, the flap operation was 70.4% (114 cases). In the flap operation, apically repositioned flap operation comprised 57 cases and modified widman flap operation comprised 52 cases. The operation for the furcation involvement was 17.9% (29 cases), and hemisection procedure was dominant.
5. Before these operation, the reevaluation was performed to 68.8% of the cases. From the results of preoperating evaluation, 20% or less of the plaque control record was 87.4% and 20% or less of the bleeding index was 86.6%. The pocket depth of the performed operation was predominantly 5mm.View full abstractDownload PDF (2451K) -
1986 Volume 28 Issue 3 Pages 894-953
Published: September 28, 1986
Released on J-STAGE: August 25, 2010
JOURNAL FREE ACCESSDownload PDF (7334K)
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