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A Contemporary Review of The Lingualized Occlusion for Removable Prosthodontics (가철성 보철물을 위한 LINGUALIZED OCCLUSION에 관한 고찰)

  • Yoo, Jin-Ho;Lee, Won-Chul;Shin, Sang-Wan
    • Journal of Technologic Dentistry
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    • v.11 no.1
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    • pp.115-120
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    • 1989
  • Many attempts for the compfrt, esthetics and improvement of Masticatory function of the patients with removable prosthesis have been made for several decades. The search for the ideal denture occlusion has been going on in an effort to find the tooth form which provides maximum denture stability and masticatory efficiency without damaging the health of the underlying bone. For the purpose, the basic concept of lingualized occlusion were suggested by payne(1941) and pound(1973) discussed a similar occlusal concept and used term " lingualized occlusion." The purpose of this literature study is to clarify and amplify a method to achieve bilateral balanced occlusion with the occlusal arrangement termed " lingualized occlusion." Lingualized occlusion can be achieved by use of anatomic teeth for the mandibular denture. Lingualized occlusion can be used in most denture combination. It is particulary helpful when the patient places high priority on esthetics but a nonanatomic occlusal scheme is indicated by oral conditions such a severe alveolar resorption, a class II jaw relationship or displaceable supporting tissue. Advantages of lingualized occlusion are summarized as follows : 1) Most of the advantages attributed to both the anatomic and nonanatomic forms are retained. 2) Cusp form is more natural in appearance compare to nonanatomic tooth form. 3) Good pnetration of the food bolus is possible. 4) Bilateral mechanical balanced occlusion is readily obtained for a region around arotric relation. 5) Bertical forces are centralized on the mandibular teeth. Lingualized occlusion provides a useful combination of several occlusal concept. Many. advantages of anatomic and nonanatomic occlusions are accomplished but the lingualized occlusal concept is not is not a panacea, and all other procedures still must be carefully excuted.

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A Study on the Main Diseases of Three Divisions of the Pulse and the Symptoms of Diseases of Gi Kyoung Pal Maek(奇經八脈) of the Maek Kyoung(脈經) Vol. II (I) (맥경권제이(脈經卷第二) 삼관맥주병(三關脈主病)과 기경팔맥병증(奇經八脈病證)에 대(對)한 연구(硏究) (I))

  • Park, Kyung;Lim, Dong-Kook
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.10 no.2
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    • pp.1-30
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    • 2006
  • Maek Kyoung(Mai Jing, 脈經) is the first chinese specialized book of diagnostics written by Wang Hee(Wang xi, 王熙) from Seo Jin(xi jin, 西晉). He assorted the contents with pulse and medical examination from Nae Kyoung(nei jing, 內經), Nan Kyoung(nan jing, 難經), Sang Han Ron(shang han lun, 傷寒論) and Jung Jang Kyoung(zhong cang jing, 中藏經). And united with his own research, he explains medical examination and the way of talking the pulse by classifying into entrance and class. Maek Kyoung(Mai Jing, 脈經) was imported Korea by Ji Chong(zhi cong, 知聰) AD 561, and he passed through Ko Ku Ryeo(gao gou li, 高句麗) with Nae Wei Jeon(nei wai dian, 內外典), Yak Seo(yao shu, 藥書), Myung Dang Do(ming tang tu, 明堂圖) and MaekKyoung(Mai Jing, 脈經) to be naturalized in Japan. This treatise make a special study of the second volume of the Maek Kyoung. It consists of the four chapters : Pyoung Sam Kwan Eum Yang E Sip Sa Ki Maek Je I1(平三關陰陽二十四氣脈第一), Pyoung In Young Sin Mun Ki Ku Jeon Hu Maek Je E(平人迎神門氣口前後脈第二), Pyoung Sam Kwan Byoung Hu Byoung Chi Eui Je Sam(平三關病侯幷治宜第三), and Pyoung Gi Kyoung Pal Maek Byoung Je Sa(平奇經八脈病第四). Bi Geup Choun Geum Yo Bang(備急千金要方) and Eui Hak Ip Mun(醫學入門) quoted from the contents in the second volume of Maek Kyoung, and Bin Ho Maek Hak(瀕湖脈學), Gi Kyoung Pal Maek Go(奇經八脈攷) and Maek Eo(脈語) extracted from contents in the second volume of the Maek Kyoung and requoted from this contents. Contents in the second volume of the Maek Kyoung have very valuable data like that, but the literature on this subject in the form of a treatise has not been yet in Korea. So I hope this study will be useful to develope Diagnostics by correcting translation and interpretation and fixing wrong translation.

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A STUDY ON MICROLEAKAGE OF LIGHT-CURING GLASS IONOMER CEMENTS (수종 광중합형 글라스 아이오노머 시멘트의 미세누출에 관한 연구)

  • Park, Kwang-Soo;Cho, Young-Gon;Hwang, Ho-Keel
    • Restorative Dentistry and Endodontics
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    • v.20 no.2
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    • pp.721-731
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    • 1995
  • The purpose of this study was to evaluate the adaptability to tooth structure of light-cured glass ionomer cements. In this, study, class V cavities were prepared on the buccal surfaces of thirty extracted human premolar teeth, and they were randomly assigned into 3 groups with 10 teeth. The cavities of each groups were filled with the Fuji II LC(GC International Corp., Japan), Vitremer(3M Dental Products Division, U.S.A) and VariGlass VLC(Caulk/Dentsply Inc., U.S.A.). The specimens were immersed in 1% methylene blue solution and stored in 100% realtive humidity at $37^{\circ}C$ for 5 days. And then, the specimens sectioned buccolingually. Degree of eke penetration at tooth--restoration interfaces were examined by magnifying glass at occlusal and gingival margin. The results were as follows : 1. On the occlusal margin, among the experimental groups, the group 2 showed the lowest microleakage($1.40{\pm}1.17$) and the group 1 showed the highest microleakage($3.10{\pm}0.99$). There was significant difference between group 1 and group 2(P<0.01). 2. On the gingival margin, among the experimental groups, the group 2 showed the lowest microleakage($2.50{\pm}1.08$) and the group 1 showed the highest microleakage($3.50{\pm}0.84$). But there was not significant. difference among the experimental groups(P>0.05). 3. The degree of microleakage at occlusal margin was less than gingival margin in all experimental groups.

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A STUDY ON THE TENSILE BOND STRENGTH OF COMPOSITE RESIN INLAYS ACCORDING TO THEIR INTERNAL SURFACE TREATMENT AND TYPES OF LUTING CEMENT (복합레진 인레이의 내면처리와 합착용 시멘트의 종류에 따른 인장접합강도에 관한 연구)

  • Kim, Jin-Cheol;Cho, Young-Gon;Hwang, Ho-Keel
    • Restorative Dentistry and Endodontics
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    • v.18 no.1
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    • pp.103-113
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    • 1993
  • The purpose of this study was to evaluate the tensile bond strength of composite resin inlays according to the their internal surface treatment and types of luting cement and compared them with the conventional direct resin filling thchnique. Class II cavities were prepared in 50 extracted human molar teeth, and then equally divided into five groups. Group 1 : Cavities of control group were directly filled with P-50. Group 2 : Cavities of resin inlay group were luted with resin cement. Group 3 : Cavities of resin inlay group were luted with luting G-I cement. Group 4 : Cavities of resin inlay group were luted with resin cement after sandblasting. Group 5 : Cavities of resin inlay group were luted with luting G-I cement after sandblasting. All specimens were polished with same method and stored in normal saline for 24 hours before testing. An Universal Testing machine(Model No. AGS-100A, Shimadzu, Japan) was used to apply tensile loads in the vertical direction, and the force required for separation was recorded with a cross-head speed of 5mm/min and 100kg in full scale. The results were as follows : 1. The mean tensile bond strength was lowest in group luted with luting G-I cement, with measurements of $14.45{\pm}0.78(kg/cm^2)$ and highest in group luted with resin cement after sandblasting, with measurements of $49.6{\pm}2.74(kg/cm^2)$. 2. The tensile bond strength was greater in resin inlay groups luted with resin cement than in control group and resin inlay groups luted with luting G-I cement(P<0.05). 3. The tensile bond strength was lower in resin inlay groups luted with luting G-I cement than in control group(P<0.05). 4. The tensile bond strength was greater in resin inlay groups luted with resin cement or luting G-I cement after sandblasting than without that(P<0.05).

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Role of MAPK Signaling Pathways in Regulating the Hydrophobin Cryparin in the Chestnut Blight Fungus Cryphonectria parasitica

  • So, Kum-Kang;Kim, Dae-Hyuk
    • Mycobiology
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    • v.45 no.4
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    • pp.362-369
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    • 2017
  • We assessed the regulation of cryparin, a class II hydrophobin, using three representative mitogen-activated protein kinase (MAPK) pathways in Cryphonectria parasitica. Mutation of the CpSlt2 gene, an ortholog of yeast SLT2 in the cell wall integrity (CWI) pathway, resulted in a dramatic decrease in cryparin production. Similarly, a mutant of the CpBck1 gene, a MAP kinase kinase kinase gene in the CWI pathway, showed decreased cryparin production. Additionally, mutation of the cpmk1 gene, an ortholog of yeast HOG1, showed decreased cryparin production. However, mutation of the cpmk2 gene, an ortholog of yeast Kss1/Fus3, showed increased cryparin production. The easy-wet phenotype and accumulation of the cryparin transcript in corresponding mutants were consistent with the cryparin production results. In silico analysis of the promoter region of the cryparin gene revealed the presence of binding motifs related to downstream transcription factors of CWI, HOG1, and pheromone responsive pathways including MADS-box- and Ste12-binding domains. Real-time reverse transcriptase PCR analyses indicated that both CpRlm1, an ortholog of yeast RLM1 in the CWI pathway, and cpst12, an ortholog of yeast STE12 in the mating pathway, showed significantly reduced transcription levels in the mutant strains showing lower cryparin production in C. prasitica. However, the transcription of CpMcm1, an ortholog of yeast MCM1, did not correlate with that of the mutant strains showing downregulation of cryparin. These results indicate that three representative MAPK pathways played a role in regulating cryparin production. However, regulation varied depending on the MAPK pathways: the CWI and HOG1 pathways were stimulatory, whereas the pheromone-responsive MAPK was repressive.

Assessment of Clinical Outcome in Dogs with Naturally Infected with Dirofilaria immitis after American Heartworm Society Protocol vs Slow Kill Method

  • Choi, Miru;Yoon, Won-Kyoung;Suh, Sang-IL;Hyun, Changbaig
    • Journal of Veterinary Clinics
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    • v.34 no.1
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    • pp.1-6
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    • 2017
  • Heartworm disease (HWD) in dogs is a life-threatening mosquito-borne disease resulting in right-sided congestive heart failure and inflammatory pulmonary disease. Due to complications from adulticidal therapy with melarsomine, slow kill protocol either with preventive dose of ivermectin or combined with doxycycline has been proposed for an alternative adultcidal therapy in dogs with HWD. Therefore, this study evaluated the clinical outcome of adultcidal therapy in dogs with class II stage of HWD after treating either American Heartworm Society (AHS) or slow kill protocol for 10 months. Clinical outcome after therapy was evaluated by clinical, radiographic and echocardiographic examination along with hematology before (D0) and after therapy (D300). Although clinical signs associated with HWD were all resolved after therapy in both groups, the infection was not cleared out 67% of dogs treated by slow kill protocol at the end of therapy. Furthermore, pulmonary arterial flow of acceleration time to ejection time ratio (AT/ET) and the right pulmonary artery distensibility index (RPADI) have been firstly used for detecting pulmonary hypertension in this study group. The pulmonary hypertension was more common in dogs with mild clinical signs, although tricuspid and pulmonary regurgitation were not detectable in most dogs in this study. Our study findings suggested that the slow kill protocol might not be efficacious enough to clear out HWD in dogs and more attention on the presence of pulmonary hypertension might be necessary for effective management of HWD in dogs.

Time-Based Characteristics of Acoustic Emission During Dental Composite Restoration (치아 와동의 복합레진 수복시 음향방출의 시간적 발생 특성)

  • Gu, Ja-Uk;Choi, Nak-Sam;Arakawa, Kazuo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.35 no.2
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    • pp.169-174
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    • 2011
  • Acoustic emission (AE) signals were detected and analyzed in real time during the polymerization shrinkage of composite resin restoration in an artificial dental ring with a class I cavity. Most AE hit events were observed in the initial curing period of the 1st region with high contraction rate. The range of the $2^{nd}$ region for the stainless steel specimen was shorter than that for the PMMA specimen but longer than that for the human dentin specimen. AE hit events showed a blast-type signal having an amplitude in the range of 25.45 dB and a frequency band of 100.200 kHz or 240.300 kHz. These values of amplitude and frequency indicated the fracture of resin or of the adhesive layer.

A Study of the Living Habits and Results of Health Examinations of University Students according to Sasang Constitution (사상체질(四象體質)에 따른 대학생들의 생활습관과 건강검진 결과 분석)

  • Jeong, Mi-Kyung;Jung, Ki-Yong;Jun, Chan-Yong;Park, Jong-Hyeong;Choi, You-Kyung
    • Journal of Society of Preventive Korean Medicine
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    • v.16 no.3
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    • pp.1-13
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    • 2012
  • Objectives : This study aimed to analyze the living habits and results of health examinations of university students according to Sasang constitution. Methods : We measured the height, weight, body mass index, and blood pressure of 2,387 university students, performed laboratory examinations, and conducted a questionnaire survey of their eating, drinking, smoking, and exercise habits. Their Sasang constitution was diagnosed by using the Questionnaire of Sasang Constitution ClassII(QSCCII). All the data were analysed statistically by descriptive statistics, chi-square test, ANOVA, tukey's multiple comparisons Results : The Taeeumin group mostly ranged in overweight sector of the BMI, and this group showed significantly higher blood pressure and AST, ALT, GGT, LDH, CPK, Creatinine, Uric acid, total cholesterol, TG, and LDL levels than other groups, while having a lower HDL level. In the living habits survey, the Taeeumin group showed the highest proportion of "overeating", and the lowest proportion of "eating slowly". This group had the highest value of quantity of alcohol drinking, highest proportion of hazardous drinkers, and highest smoking rate of the three constitutions. Conclusions : In the results of this study, there were significant differences in the living habits behaviors, and the results of health examination, between the three constitutions. In particular, individuals of the Taeeumin group have a high possibility of getting chronic disease, such as hypertension, diabetes mellitus, hyperlipidemia, and obesity; and need to improve their living habits.

Assessment of the Naktong River Pollution after Phenol Spillage from the Kumi Industrial Estates II, Korea (페놀오염사건 이후의 낙동강수 오염평가)

  • Kim, Doo-Hie;Jang, Bong-Ki;Hong, Sung-Chul;Moon, Hyo-Jung;Lee, Duck-Hee;Oh, Hae-Ju
    • Journal of Preventive Medicine and Public Health
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    • v.26 no.2 s.42
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    • pp.268-281
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    • 1993
  • The aquatic quality of the Naktong river after two or three months in June, 1991 with phenol spillage from a electrical factory in Kumi was investigated. The samples were collected at six sites of the Naktong river basin and Kachang and Kongsan lakes. Phenol was not detected from all water samples. Turbidity was very much increased to the down stream in the Naktong river. The BOD and COD values exceeded the 2nd grade(3mg/l) of the Korean standard quality of Environmenal Water Act at the all sampling sites of the Naktong river. Especially, the value of COD at Kaejin (12.5mg/l) was poorly classified as to the 5th grade of water class for the environmental quality standards. Organophosphorous pesticides such as parathion, malathion, fenitrothion and diazinon were investigated but not detected. Diazinon was only detected at the Ilsan bridge(1.42ppb), Okkye stream(6.95ppb), Waekwan bridge(0.32ppb), Gangjung reservior(0.13ppb), Kaejin (0.05ppb). Of the carbamates such as carbanyl, isoprocarb and cabofuran, the carbofuran was detected all sites except tap water, and Kachang and Kongsan lakes. The content of heavy metals such as Cd, Pb, Zn, Fe, Mn, Hg were not exceeding for drinking water standards at the all sampling region, but only mecury was detected from Okkye stream(0.018ppb) and Kaejin (0.09ppb). In the regions of Kachang and Kongsan lakes, the content of heavy meatals were lower than that of reservior of Naktong river.

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Determination of Phenolics, Sugars, Organic Acids and Antioxidants in the Grape Variety Kalecik Karası under Different Bud Loads and Irrigation Amounts

  • Tangolar, Serpil Gok;Tangolar, Semih;Kelebek, Hasim;Topcu, Sevilay
    • Horticultural Science & Technology
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    • v.34 no.3
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    • pp.495-509
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    • 2016
  • Irrigation applications (IA) and increased bud load (BL) are fundamental practices that are used to achieve optimum yields in grape production, while maintaining fruit quality parameters. Two different irrigation amounts (IA-I and IA-II) based on growth stages, in addition to a non-irrigated (rain-fed) control, along with two different BL applications [normal bud load based on traditional pruning practices (1BL) and double bud load (2BL)] were evaluated over a two-year experiment for their effects on the biochemical composition of the berries. Berries from the rain-fed vines had higher sugar levels, whereas no significant change was detected in organic acid levels. The increased bud load (2BL) treatment yielded less sugar in the berries compared to the 1BL control in both years. The total non-colored phenolic compounds (NPC) were greater in the irrigated (especially IA-I) and 2BL treatments than in those of the rain-fed and 1BL control. However, total anthocyanin was greater in the non-irrigated and 1BL control than in the irrigated and 2BL treatments. The antioxidant contents of the berries also varied according to the treatments and years. Our results implied that implementing a higher bud load along with the IA-I irrigation application, in which irrigation applications were 50 and 75% of the cumulative evaporation from the Class A pan during berry set to veraison and veraison to harvest growth stages, respectively, can help in obtaining greater yields in high-plateau viticulture. Thus, if more buds are left on the vines, along with sufficient irrigation and rainfall, yield may increase while maintaining or increasing the biochemical composition of the berries.