巻号一覧
44 巻 (2000)
- 6 号 p. 725-
- 5 号 p. 625-
- 4 号 p. 479-
- 3 号 p. 371-
- 2 号 p. 179-
- 1 号 p. 1-
前身誌
44 巻, 3 号
選択された号の論文の11件中1～11を表示しています
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高齢者アセスメント表の補綴領域への活用越野 寿, 平井 敏博, 池田 和博, 石島 勉, 川上 智史2000 年 44 巻 3 号 p. 371-378
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーIt is necessary for the dependent elderly and/or resident in nursing home to undergo comprehen-siveassessment as the basis for developing a plan of care that helps them to attain or maintain the highestpracticable physical, mental, and psychosocial activity possible. Minimum Data Set (MDS) and matching Resident Assessment Protocols (RAPs) is one of the effective resident assessment means used worldwide. Inthe RAPs, “Dental Care” is also included, but no evaluation of masticatory function is considered.
In this study, 36 dependent elderly persons residing in a geriatric hospital were evaluated “Autonomy Score, ”“MDS/RAPs, ”“Denture Score, ”“Voluntary maximal clenching force, ” and “Chewing Score.”
The correlation between “Denture Score” and “Noncongenitiveness/Dementia, ”“Mood State, ”“Feedingby Tube, ”“Pressure Ulcer” in the RAPs by simple regression analysis was statistically significant (p<0.05).
From the results of this investigation, it was suggested that MDS/RAPs could be useful for screening thenecessity of prosthodontic treatment for the elderly.抄録全体を表示PDF形式でダウンロード (1572K) -
若年有歯顎者と高齢総義歯装着者の比較北岡 直樹, 薦田 淳司, 市川 哲雄, 石川 正俊, 永尾 寛, 河野 文昭, 羽田 勝2000 年 44 巻 3 号 p. 379-385
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーMastication and swallowing are closely related to tongue function. In the elderly, decrease of tongue function is suspected to cause oral malfunction. The purpose of the present study was to clarify the aging of swallowing by observing tongue pressure on the palate during swallowing. The subjects used were three young dentate persons and eight elderly complete denture wearers. Five pressure transducers were placed in either the artificial palatal plate or the duplicated upper denture. Tongue pressure and electromyography (EMG) of the suprahyoid muscle were recorded.
The results were as follows:
1. Maximum tongue pressure of the elderly denture wearers was significantly lower than that of young dentate persons.
2. Upon swallowing saliva, both the duration from the EMG onset of suprahyoid muscle movement to the onset of tongue pressure and from the EMG onset to the time of maximum tongue pressure of the elderly were longer than those of the young dentate persons.
3. In young dentate persons, the duration from the onset of tongue pressure to the time of maximum tongue pressure in swallowing saliva was shorter than that for swallowing 2 ml water, while that of elderly denture wearers was longer.抄録全体を表示PDF形式でダウンロード (3332K) -
服部 真幸, 越野 寿, 平井 敏博, 石島 勉2000 年 44 巻 3 号 p. 386-393
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーTo elucidate the tongue movement in chewing with habitual chewing side chewing (HC) and non-habitual chewing side chewing (NHC), the chewing test was performed using eight healthy, fully dentate males. Tongue and mandibular movements with and without an experimental lingual plate (ELP) in chewing 3 grams of peanuts with HC and NHC were recorded and analyzed. Tongue movement of the ipsilateral and contralateral measuring points were recorded by ultrasound diagnostic equipment with 5 MHz electron convex section scanning probe, and mandibular movements of the incisal point were recorded by MKG. The masticatory efficiency was evaluated by the sieving method at that time.
The results were as follows:
1. The masticatory efficiency in NHC was lower than that of HC (p<0.01).
2. The cycle time of tongue movement in NHC was longer than that of HC (p<0.01).
3. The cycle time of mandibular movement in NHC was longer than that of HC (p<0.01).
4. In HC and NHC, there was statistical correlation coefficient among masticatory efficiency, cycle time of tongue movement and cycle time of mandibular movement (p<0.01).
From the result, it was suggested that analyzing tongue movement and mandibular movement is effective to determine the habitual chewing side in a patient. It was also suggested that the tongue acted harmoniously with the mandible in HC side chewing, but such cooperation was lacking in NHC.抄録全体を表示PDF形式でダウンロード (2066K) -
シミュレータによる検討大栗 孝文, 河野 文昭, 市川 哲雄, 松本 直之2000 年 44 巻 3 号 p. 394-403
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーVarious types of occlusal scheme have been developed for a complete denture. Some investigators recommended lingualized occlusion as the scheme of occlusion for acomplete denture, but how to determine the buccal interocclusal distance in lingualized occlusion isunclear. The purpose of this study was to investigate the influence of the buccal interocclusal distance in lingualized occlusion on the pressure distribution under a complete denture. In this study, eight pressure transducers were placed in the basal surface of a mandibular denture. The pressure distribution under a complete denture and the required force were recorded when crushing three different foods: kamaboko, carrot, and peanuts.
The results were as follows:
1. The required force for crushing all test foods decreased as the buccal interocclusal distance increased.
2. During the food crushing tests the positive pressure values were observed mainly on the working side and the positive pressure values decreased as the buccal interocclusal distance increased.
3. The negative pressure values were observed on the non-working side, and the negative pressure values decreased as the buccal interocclusal distance increased.
4. The required force for crushing test foods and the pressure applied to supporting tissues greatly decreased when crushing hard foods.抄録全体を表示PDF形式でダウンロード (8212K) -
小枷 進祐, 井上 祥子, 王 暁容, 高橋 裕, 松藤 和孝, 澤村 直明, 羽生 哲也2000 年 44 巻 3 号 p. 404-409
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーThe purpose of this study was to investigate the degrees of polymerization of denture base resins processed with injection type microwave-cured resin, conventional type microwave-cured resin, and heat-cured resin. The methods for evaluation with the degree of polymerization induced the conditions of the mechanical properties in transverse strength, modulus of elasticity, deflection, water absorption, water solubility, initiation temperature, and maximum temperature. Under the conditions of this study, the resins were compared, and the results were as follows:
1. The mechanical properties of injection type microwave-cured resin were lower than conventional type microwave-cured resin and heat-cured resin.
2. The degree of polymerization of injection type microwave-cured resin was lower than that of conventional type microwave-cured resin and heat-cured resin.抄録全体を表示PDF形式でダウンロード (1420K) -
第2報 鋳造方法の影響浅野 彰夫, 山内 六男, 堺 誠, 都尾 元宣, 長澤 亨2000 年 44 巻 3 号 p. 410-415
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーA cast-soldering method was used for the keepers of magnetic attachments. However, there have been few studies concerning the effects of the cast-soldering method on keepers. In this study, the cast-soldering method was investigated by changing casting methods.
Two commercially available keepers and a 12% Au-Ag-Pd casting alloy were used. Cast-soldering was performed at a mold temperature of 700°C for 30 minutes using three types of casting machines (suction pressure type, vacuum pressure type, and centrifugal type). After cast-soldering, the interface between the keeper and the casting alloy was observed by metallic microscopy and scanning electron microscopy (SEM). The interface was also analyzed with an X-ray electron microprobe.
Microscopic observation revealed a black layer between the keeper and the casting alloy in all specimens. Scanning electron microscopy and X-ray electron microprobe analysis indicated that the black layer was composed of an oxidation layer with Fe and a gap. The black layer was larger with the centrifugation type casting machine than by the other methods. After using this type of casting machine, gaps and cavity-like casting defects were observed in the bottom of the specimen.
The results suggested that the vacuum pressure type casting machine is desirabe for the cast-soldering of keepers.抄録全体を表示PDF形式でダウンロード (6769K) -
田上 直美, 松村 英雄, 熱田 充2000 年 44 巻 3 号 p. 416-425
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーThis study was conducted to investigate properties of current composite veneering materials polymerized with various laboratory photo-curing units for the purpose of evaluating the curing performance of the light sources. A microfilled composite material designed for prosthetic veneer (Dentacolor) was polymerized with nine photo-curing units, and the curing depth obtained with each unit was compared. The curing depth of the material was determined using the method described by the International Organization for Standardization (ISO 4049). In addition, six other properties (Knoop hardness, compressive strength, flexural strength, flexural modulus, water absorption, and solubility) of three composite veneering materials (Cesead II, Dentacolor, and Solidex) polymerized with two different units were also determined. The respective light sources of the units were a xenon (Dentacolor XS) and a metal halide (Hyper L II) lamp, and the composite materials were exposed with the units for 90 s on each side. The results were as follows:
1. Among the nine photo-curing units, the metal halide unit consistently exhibited the greatest curing depth.
2. Knoop hardness, flexural modulus, and solubility were influenced by the type of the photo-curing unit.
3.All the composite materials exposed with the metal halide unit demonstrated significantly lower solubility than those exposed with the xenon unit.抄録全体を表示PDF形式でダウンロード (2197K) -
セラミック・レジンセメント接着積層体について茂呂 祐康2000 年 44 巻 3 号 p. 426-432
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーThe present study was conducted to investigate thermal properties of double laminated specimens made from All ceramic (IPS Empress, IVOCLAR) and resin cement (Variolink II, VIVADENT). The specimens were IPS Empress 1.0mm, Variolink II 0.05mm (ER50), IPS Empress 1.0 mm, Variolink II 0.10mm (ER 100), IPS Empress 1.0mm, and Variolink II 0.20mm (ER 200). Thermal properties were measured by TC-2000 L (Shinku-riko) with a xenon flash as the light source to clarify the changes of thermal properties with the difference in thickness of Variolink II (measured value). Then the thermal conductivity of ER 50, ER 100, and ER 200 was calculated for IPS Empress and Variolink II (calculated value), and thermal conductivity of all ceramic restoratives (IPS Empress 1.00 mm, Variolink II 0.05mm, IPS Empress 1.00mm, Variolink II 0.10mm, IPS Empress 1.00mm, and Variolink II 0.20mm) and human tooth (enamel 0.75, dentin 0.30, 0.35, and 0.45mm), which was eliminated by preparation of an abutment tooth, was also calculated and then examined.
The measured value of thermal conductivity (W/mK) was 0.603 for ER 50, 0.577 for ER 100, and 0.540 for ER 200. Variolink II was thicker, and thermal conductivity of all ceramic restoratives was less. Calculated values of thermal conductivity (W/mK) ranged from 0.748 to 0.698, and those of tooth substance 0.808 to 0.779. Accordingly, the rate of decrease between measured value and calculated value was 21.0%. Therefore, thermal conductivity of all ceramic restoratives was less than that of tooth substance which was eliminated by preparation of an abutment tooth.抄録全体を表示PDF形式でダウンロード (1464K) -
石川 恵美, 新谷 明喜, 横塚 繁雄2000 年 44 巻 3 号 p. 433-444
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーThe study was conducted to investigate how pickling affects the constitution and color of high-functional gold alloy and porcelain fusing strength with bonding porcelain during the fabrication process. Each analysis had four conditions, for the constitution and color analyses in 0-30 days, dipping the specimen in the artificial saliva, in the physiological salt solution, with pickling the oxidized specimen, and without pickling the oxidized specimen, and for the porcelain fusing strength, pickling the specimen, not pickling the specimen, with bonding porcelain, and without bonding porcelain. Gold, silver, white gold, copper, zinc, and indium were used. The analyses and results were as follows:
1. Constitution analyses:
A. Random point analysis on the surface: Gold, silver, and white gold chronometrically showed more constituent change under all conditions ; each showed more change than that with pickling ; and each of the other metals showed its own characteristic.
B. Plane analysis on the surface: Gold, copper, and zinc showed uneven casting structure under various conditions and on various days ; indium showed it under all conditions.
2. Color change analysis: The pickled specimen chronometrically showed more color change than that without pickling.
3. Porcelain fusing strength analysis: The specimen with bonding porcelain showed more shear adhesive strength than that without it.
In conclusion, significant data on the constitution, color, and porcelain fusing strength of the highfunctional gold alloy were obtained. Further study using the obtained data to alleviate metal allergy, harmfulness, and other related clinical problems is desired.抄録全体を表示PDF形式でダウンロード (4474K) -
大場 洋子2000 年 44 巻 3 号 p. 445-446
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーPDF形式でダウンロード (3718K) -
加藤 英材2000 年 44 巻 3 号 p. 447-448
発行日: 2000/06/10
公開日: 2010/08/10
ジャーナル フリーPDF形式でダウンロード (3553K)
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