THE JOURNAL OF THE STOMATOLOGICAL SOCIETY,JAPAN
Online ISSN : 1884-5185
Print ISSN : 0300-9149
Volume 47, Issue 4
Displaying 1-15 of 15 articles from this issue
  • Atsushige Sato
    1980 Volume 47 Issue 4 Pages 405-409
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
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  • Shigehisa Inokoshi
    1980 Volume 47 Issue 4 Pages 410-426
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    The pulp response to a new adhesive restorative resin“Clearfil Bond System F” was histopathologically and clinically investigated by using adult dog teeth and human teeth, comparing with Adaptic Total System. Findings were as follows.
    1. When cavities were unetched and unlined, both pulp response and bacterial penetration along the cavity walls were greater with Adaptic than with Clearfil. The amount of the bacteria increased with time. The cell infiltration and the irritation dentin formation were more observed under the cavities with bacteria.
    2. When the cavities were lined, the pulp response decreased to both Adaptic and Clearfil.
    3. When totally etched cavities were filled with Clearfil, no bacteria penetrated and the pulp response was slight. The response was slightly greater than that under the lined cavities but less than that under the unetched and unlined cavities.
    4. When human tooth cavities, both lined and totally etched, were filled with Clearfil, all cases did not show any clinical symptom except one case with pulp exposure. No histological sign of inflammation was found under the lined cavities and slight inflammation under the totally etched cavities which diminished almost completely after 2 months, with exception of the case with pulp exposure.
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  • Jun Mitsuhashi
    1980 Volume 47 Issue 4 Pages 427-446
    Published: 1980
    Released on J-STAGE: December 08, 2010
    JOURNAL FREE ACCESS
    Serum necrotizing factor (NF) activities from patients with chronic recurrent aphtha, Behcet's disease and other oral diseases were examined by intradermal injections of patients' sera to guinea pigs. The relationship between the degree of the NF activity and the serum complement level was analysed. The dermal reactions of guinea pigs were also studied histologically.
    Sera from patients with various oral diseases generally showed high NF activity in contrast with healthy control donors.
    Histological features of the dermal reaction were characterized by capillary dilation, fibrinoidlike degeneration and necrosis of small vessels, migration of neutrophils and eosinophils, haemorrhage and degeneration of muscle fibers.
    Serum NF activity was abrogated by incubating the serum at 56°C for 30 min., or treating the serum with either zymosan or inulin or CVF at 37°C 30 min.
    CH50 and AP50 were significantly higher in sera from the donors with high NF activity than the donors with low NF activity. The measurement of serum concentration of C1q, C4, C3, C5, C9, C1INA and C3PA revealed that the levels of C3, C5, C9 and C3PA were elevated in the sera of high NF activities.
    These results suggest that the NF activity is closely related to the serum complement.
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  • Satoshi Ishida
    1980 Volume 47 Issue 4 Pages 447-464
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Clinical observation of the total 685 cases of mucous cyst was reported, of which, histological examination was performed for 291 cases and the amino acid compositions of the cyst contents was analyzed for 9 cases.
    1. Out of 685 cases, 425 cases could be diagnosed as mucoceles and 260 cases ranulas.
    2. Seventy-nine per cent of the mucoceles were located in the lower lip, 11 per cent in the tongue and 8 per cent in the buccal mucosa. Most of the ranulas were located in the mouth floor.
    3. Mucous cysts were most frequently found in the third decade of patient age. Ratio of female to male patient was 2.8 in ranula and approximately one in mucocele.
    4. The amino acid compositions of the cyst contents of ranula were similar to that of serum, and differed from that of submaxillary-sublingual saliva.
    5. Direct communication between the cyst and the salivary gland were found in all the 26 cases of mucous cyst examined in serial section.
    6. Five of 26 cases examined were ranula, and were classified as extravasation cyst. It was found that some of them were communicating to sublingual glands with multiple ducts. There was squamous metaplasia of the torn end of these ducts.
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  • Ken Hashimoto
    1980 Volume 47 Issue 4 Pages 465-486
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    As the differentiation between true and pseudo-Class III cases is required for the orthodontic treatment, the present investigation were carried out to analyse the interrelation of the path of mandibular movements and also to examine the pattern of craniofacial association with mandibular movements.
    Materials were consisted of the cephalograms and records of the path of mandibular movements which were taken from 20 Angle class III malocclusion cases, 10 cases (pseudo-Class III) well responded to the construction bite and the others (true-Class III) with skeletal problems.
    The conclusion were as follows;
    1) The retruded movement and the tapping movement, which was ended at the retruded tooth contact position, were observed in pseudo-Class III cases.
    2) The inclination of the habitual jaw movement to SN plane was influenced by the inclination of the posterior border movement, and this tendency was more stronger in true-Class III cases than pseudo-Class III cases.
    3) In pseudo-Class III cases, the inclination of the posterior border movement and habitual jaw movement to SN plane were significantly correlated with the antero-posterior position of the upper and lower jaw.
    4) The analysis of interrelation of the path of mandibular movements to Condyle-Incisal plane inferred that the inclination of the retruded movement has a considerable effect on the inclination of the habitual jaw movement.
    5) Pseudo-Class III cases seemed to be classified into two sub-groups, according to the variance of the horizontal component of the retruded movements.
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  • Yasushi Tadokoro
    1980 Volume 47 Issue 4 Pages 487-496
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    The effect of the newly developed vibration etching technique using a fissure needle for fissure sealing was investigated in vitro comparing with the conventional simple etching technique. Findings were as follows.
    1. The simple etching technique failed to completely cleanse the fissures and remove the prismless enamel layers. Consequently, the penetrating sealant resin, if penetrated, did not form tags and separated from the enamel surfaces of fissure.
    2. The vibration etching technique cleansed the fissures completely, removed the prismless enamel layers and enlarged the fissures to 100-150 μm in width as far as the fissure needle reached. Consequently, sealant resin penetrated into the enlarged fissure completely and adhered to the tooth substance tightly by the forming tags.
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  • Part 2. Effect of Corrosion on the Metallurgical Structure
    Akira Okamoto
    1980 Volume 47 Issue 4 Pages 497-525
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    The corrosion behavior of several types of high-copper amalgam specimens attacked by the crevice corrosion during one year was microstructurally investigated by using SEM, WDX and EDX, comparing with those of the conventional amalgams.
    1) In the conventional amalgams, the corrosion was observed through the whole layer of the specimens. It was proved that the γ2 phase was selectively corroded, but γ1 or γ phase was highly resistant.
    2) In the high-copper dispersant amalgam, the demarcated corrosion front showed the irregular line. The reaction zone (η′phase+γ1 phase) around the Ag-Cu eutectic particles seemes to be primarily attacked by corrosion. This selective corrosion of the reaction zone might retard the proceeding of the inward corrosion.
    3) In the high-copper single composition amalgams, the corroded layer was markedly demarcated with the corrosion front line. Both η′phase and the original alloy particle appear to be readily corroded. Until the η′phases and original alloy particles will be completely destroyed by this localized corrosion, the corrosion front would not proceed toward the deeper portion.
    4) Accumulation of tin-rich corrosion products and disappearance of copper component were observed at the corroded layers.
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  • Shigetaka Yanagisawa
    1980 Volume 47 Issue 4 Pages 526-540
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    In order to determine whether gustatory evoked response is useful or not as an objective gustometry, the character of the response was researched.
    The experiments were carried out in eighteen healthy adults between eighteen and twenty-five years old. Evoked responses were recorded from the temporal region (T3, T4) by monopolar method. The trial was repeated twenty times to get a summated evoked response. The taste solutions using deminerized water and tartaric acid solutions were applied to the tongue surface. Also a plastic bar was used as tactile stimuli.
    The evoked response was characterized by six peaks. From being recognized in all traces regardless of character of the stimulation the author has deduced the early three peaks caused by tactile sensation. These three peak latencies were approximately 150 msec (N0), 300 msec (P1) and 500 msec (N1) .
    The late three peaks found only in response to the tartaric acid were considered as taste res-ponse. These latencies were about 730 msec (P2), 1300 msec (N2) and 1600 msec (P3) . The frequency of their emergence was 75 to 100% in P2 and N2.
    According to N2, P3, a relationship between the latency (T) and stimulus intensity (C) was obtained as the following
    T=a log C+K (a, K: constants) .
    As a result, the investigation of gustatory evoked response was considered an available method as objective examination.
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  • [in Japanese], [in Japanese]
    1980 Volume 47 Issue 4 Pages 541
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese], [in Japanese]
    1980 Volume 47 Issue 4 Pages 542
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Download PDF (1395K)
  • [in Japanese]
    1980 Volume 47 Issue 4 Pages 543
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Download PDF (145K)
  • [in Japanese]
    1980 Volume 47 Issue 4 Pages 544
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Download PDF (115K)
  • [in Japanese]
    1980 Volume 47 Issue 4 Pages 545
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Download PDF (1711K)
  • [in Japanese]
    1980 Volume 47 Issue 4 Pages 546
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Download PDF (127K)
  • [in Japanese]
    1980 Volume 47 Issue 4 Pages 547
    Published: 1980
    Released on J-STAGE: October 08, 2010
    JOURNAL FREE ACCESS
    Download PDF (1543K)
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