| 영문 | dental caries | 한글 | 충치, 치아우식증 |
|---|---|---|---|
| 설명 | 치아의 조직이 세균에 의해 용해내지 파괴되어 점차 통증을 나타내다가 치아를 잃게 되는 하나의 세균성 병이라고 볼 수 있다. 우리나라에서는 영구치의 충치 이환율이 약 80%로, 한 사람이 2~3개의 충치를 갖고 있는 셈이며, 구강 보건상태는 도시, 농촌지역, 해안지역 순으로 좋다. 원인은 치태(dental plaque)로서, 이것은 점액이나 탈락한 잇몸의 세포들, 그리고 세균 등으로 이루어져 있으며, 점착성이 강하여 치아 표면에 잘 부착되어 양치질이나 칫솔질로는 쉽게 제거되지 않는다. 치태에는 그물모양의 구조내에 막대균과 알균이 섞여 있는데, 특히 내산성 사슬알균과 젖산균이 많다. 현재 가장 유력한 충치의 원인균으로 밝혀지고 있는 이 사슬알균은 설탕을 합성하는 능력을 가지고 있으며, 덱스트란(dextran)을 형성한다고 생각되는데, 이 덱스트란은 물에 녹지 않으며 끈적거리는 점착성이 있어 치태가 치아표면에 잘 붙어 있게 한다. 이 사슬알균은 설탕으로부터 유기산과 치태를 형성한다. 치태 중에는 사슬알균이 생산하는 산이 정체되어 있기 때문에, 이 산에 의해 치아 표면의 단단한 석회질을 녹인다. 대부분이 인산칼슘으로 구성되어 있는 치아의 표면은 산에 의해 칼슘이 분해되어 치아 표면이 거칠어지면서 충치가 진행된다. 이와 같이 세균과 이 세균이 생산하는 화학적 물질에 의해서 충치가 생긴다는 가설을 세균-화학설이라고 한다. 충치의 발생원인에는 이 세균-화학설 이외에도 미생물이 치아표면의 유기질 부위에 먼저 부착되어 산을 만들어 파괴시킨다는 단백용해설도 있으며, 또한 산에 의하지 않는 치아의 파괴, 음식물이 원인이 된다고 주장하는 학설도 있다. 설탕은 충치를 가장 잘 유발시키는 물질로, 섭취 빈도에 따라 충치가 증가한다는 것이 증명되고 있다. 비타민은 충치 요인에 그리 중요하지 않은 것으로 보이며 음식물 내에 존재하는 칼슘과 인 또한 중요하지 않다고 한다. 유전적 소인은 중요한 역할을 하리라 생각되지만 증명하기가 어렵다. |
||
| NZB | New Zealand black [mouse] |
|---|---|
| NZC | New Zealand chocolate [mouse] |
| NZO | New Zealand obese [mouse] |
| NZR | New Zealand red [rabbit] |
| NZW | New Zealand white [mouse] |
| NEJM | New England Journal of Medicine |
|---|---|
| N.Z. | New Zealand |
| NZB | New Zealand Black |
| NZO | New Zealand Obese |
| NZW | New Zealand White |
| new zealand | A group of islands in the South Pacific Ocean. New Zealand flax. <botany> A myrtaceous shrub (Leptospermum scoparium) of new Zealand and Australia, the leaves of which are used as a substitute for tea. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| New Zealand mice | Inbred strains of mice, either black (NZB) or white (NZW), unique among strains used in experimental immunology because of their proclivity to spontaneous immunologic abnormalities and disorders including systemic lupus erythematosus similar to that found in humans. (05 Mar 2000) |
| journal article | The predominant publication type for articles and other items indexed for nlm databases. (12 Dec 1998) |
| superior dental branches of superior dental plexus | Branches passing from the superior dental plexus to the roots of the teeth of the upper jaw. Synonym: rami dentales superiores plexus dentalis superioris. (05 Mar 2000) |
| inferior dental branches of inferior dental plexus | Branches passing from the inferior dental plexus to the roots of the teeth of the lower jaw. Synonym: rami dentales inferiores plexus dentalis inferioris. (05 Mar 2000) |
| camelids, new world | Ruminant mammals of south america. They are related to camels. (12 Dec 1998) |
| papua new guinea | A country consisting of the eastern half of the island of new guinea and adjacent islands, including new britain, new ireland, the admiralty islands, and new hanover in the bismarck archipelago; bougainville and buka in the northern solomon islands; the d'entrecasteaux and trobriand islands; woodlark (murua) island; and the louisiade archipelago. It became independent on september 16, 1975. Formerly, the southern part was the Australian territory of papua, and the northern part was the un trust territory of new guinea, administered by Australia. They were administratively merged in 1949 and named papua and new guinea, and renamed papua new guinea in 1971. (12 Dec 1998) |
| new | 1. Having existed, or having been made, but a short time; having originated or occured lately; having recently come into existence, or into one's possession; not early or long in being; of late origin; recent; fresh; modern; opposed to old, as, a new coat; a new house; a new book; a new fashion. "Your new wife." 2. Not before seen or known, although existing before; lately manifested; recently discovered; as, a new metal; a new planet; new scenes. 3. Newly beginning or recurring; starting anew; now commencing; different from has been; as, a new year; a new course or direction. 4. As if lately begun or made; having the state or quality of original freshness; also, changed for the better; renovated; unworn; untried; unspent; as, rest and travel made him a new man. "Steadfasty purposing to lead a new life." (Bk. Of Com. Prayer) "Men after long emaciating diets, fat, and almost new." (Bacon) 5. Not of ancient extraction, or of a family of ancient descent; not previously kniwn or famous. 6. Not habituated; not familiar; unaccustomed. "New to the plow, unpracticed in the trace." (Pope) 7. Fresh from anything; newly come. "New from her sickness to that northern air." (Dryden) New birth. See Birth. New Church, or New Jerusalem Church, the church holding the doctrines taught by Emanuel Swedenborg. See Swedenborgian. New heart, an old name for the formation immediately above the coal measures or strata, now divided into the Permian and Trias. See Sandstone. New style. See Style. New testament. See Testament. New world, the land of the Western Hemisphere; so called because not known to the inhabitants of the Eastern Hemisphere until recent times. Synonym: Novel, recent, fresh, modern. See Novel. Origin: OE. OE. Newe, AS. Niwe, neowe; akin to D. Nieuw, OS. Niwi, OHG. Niuwi, G. Neu, Icel. Nr, Dan. & Sw. Ny, Goth. Niujis, Lith. Naujas, Russ. Novuii, Ir. Nua, nuadh, Gael. Nuadh, W. Newydd, Armor. Nevez, L. Novus, gr, Skr. Nava, and prob. To E. Now. 263. See Now, and cf. Announce, Innovate, Neophyte, Novel. Source: Websters Dictionary (01 Mar 1998) |
| new brunswick | A province of eastern canada, one of the maritime provinces with nova scotia, prince edward island, and sometimes newfoundland. Its capital is fredericton. It was named in honor of king george III, of the house of hanover, also called brunswick. (12 Dec 1998) |
| new caledonia | A group of islands in melanesia constituting a french overseas territory. The group includes new caledonia (the main island), ile des pins, loyalty island, and several other islet groups. The capital is noumea. It was discovered by captain cook in 1774 and visited by various navigators, explorers, and traders from 1792 to 1840. Occupied by the french in 1853, it was set up as a penal colony 1864-94. In 1946 it was made a french overseas territory. It was named by captain cook with the 5th and 6th century a.d. Latin name for scotland, caledonia. (12 Dec 1998) |
| new combination | The new name that results from the transfer of a microorganism from one genus to another; the generic name changes but, in most cases, the specific epithet remains the same. (05 Mar 2000) |
| new duck disease | A contagious disease of young ducks and turkeys caused by the bacterium Pasteurella anatipestifer and characterised in ducks by ocular and nasal discharges, coughing and sneezing, and incoordination, and in turkeys by dyspnea, droopiness, lameness, and a twisted neck. Synonym: new duck disease. (05 Mar 2000) |
| new england | The geographic area of new england in general and when the specific state or states are not indicated. States usually included in this region are maine, new hampshire, vermont, massachusetts, connecticut, and rhode island. (12 Dec 1998) |
| new growth | <oncology, pathology> New and abnormal growth of tissue, which may be benign or cancerous. (16 Dec 1997) |
| new guinea | Originally an island of the malay archipelago, the second largest island in the world. It divided, west new guinea becoming part of indonesia and east new guinea becoming papua new guinea. (12 Dec 1998) |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|