Gutta-percha - izo .. Tanthauzo la mawu akuti "gutta-percha"

zakuthupi A monga gutta percha amatanthauza zosiyanasiyana zovuta lalabala zachilengedwe kuwapeza mitengo kuyamwa mtundu Palaquium, Isonandra ndi Dichopsis. Mawuwa likuchokera ku dzina la chomera mu chinenero cha Chimalaya -. "Geyha-Persian" omwe anamasuliridwa ngati 'lalabala mogwirizana " Gutta-percha - ndi chiyani? adjective Izi ntchito m'ganizo lenileni ndiponso mophiphiritsa.

Kuyambira mfundo za sayansi view

ndi tanthauzo la mawu "gutta-percha" n'chiyani? Kuyambira mfundo za sayansi mmene nkhaniyi anali wachinsinsi mu 1843 ndipo amatchedwa zothandiza thermoplastics chikhalidwe. Mu theka lachiwiri la m'ma XIX, gutta-percha ntchito zosiyanasiyana zolinga za m'banja komanso mafakitale.

Makamaka, chuma ichi chakhala chofunika monga chuma chimateteza kwa zingwe m'madzi wanthambo. Pasanapite nthawi gutta-percha unayamba mu dziko Western, icho chinali kugwiritsidwa ntchito mu mawonekedwe zochepa kukonzedwa wa ku Malaysia Archipelago mbadwa kupanga amangomvera kwa mipeni, kuyenda timitengo ndi zina.

The European koyamba kupeza zinthu izi anali John John ananena kuti anapeza Far East mu 1656. Iye ananena kuti "nkhalango Mather." Dr. William Montgomery, msilikali zachipatala ya utumiki Indian, anayambitsa gutta-percha mu kugwiritsa ntchito mu West. Choyamba anazindikira angathe nkhaniyi mu mankhwala, ndipo mu 1843 anali kupereka ya Zikho Gold wa Royal Society of Tirhana ku London.

gutta-percha mtengo

Mu Malaysia, mtengo lotchedwa "Taban" ndipo anthu alipo kale ntchito madzi anaumitsa ( "khans") kupanga zinthu monga amangomvera kuumbidwa kwa zipangizo ndi mipeni. Izi lalabala zachilengedwe, amatchedwanso gutta-percha, ndi chipatso wapatali kwambiri.

Palaquium mitengo gutta kukula mu msinkhu 5-30 mamita ndi ambiri m'mimba mwake 1.5 m. Yobiriwira masamba, interleaved kapena m'magulu mwauzimu, ndi yosavuta, mmodzi chidutswa pafupifupi 8-25 masentimita lililonse m'litali. Iwo glossy wobiriwira pamwamba ndipo nthawi zambiri chikasu kapena glaucous pansipa.

Maluwa kuwonekera masango ang'onoang'ono pamodzi zimayambira, aliyense maluwa ali corolla woyera ndi zinayi banja (zambiri sikisi) ndi masamba lakuthwa. zipatso ndi mabulosi ovoid 3-7 masentimita awiri, munali kwa wina ndi mbewu anayi. Mu mitundu yambiri ndi edible.

Mu Australia, ndi gutta percha - dzina wamba, makamaka ntchito nkhuni Excoecaria parvifolia, amene amapereka onunkhira waukulu woderapo nkhuni. Iwo umatchedwanso "birch kumpoto." mitundu imeneyi si kugwirizana ndi Palaquium mbadwa.

Kuyambira mfundo mankhwala view

Gutta-percha Kodi zikutanthauza chiyani? M'lingaliro loona izo - zopangidwa gutta-percha. Kodi mtundu wa meteriall kwa mankhwala amazionera? matabwa ake ndi lalabala kapena elastomer polima ku isoprene kapena polyisoprene. Ngakhale rubbers lalabala ndi amorphous mu dongosolo maselo, guttapercha (transstruktura) analimbikitsa, imbaenda ku kugwirizana stiffer. Gutta-percha - ndi isoprene polima amene ali zofewa pamene mkangano ndi mosavuta Mofananamo mosiyanasiyana amene ali ndendende mwatsatanetsatane.

Ntchito Mano

The bioinertsiya yemweyo amene anakupanga gutta percha oyenera zingwe za m'madzi, komanso oyenera mankhwala, ndicho mu mano. Nkhanizi ntchito zipangizo zambiri opaleshoni ndi muzu mankhwala (obturation kapena kudzaza malo opanda kanthu mkati muzu dzino pambuyo kakusintha mankhwala endodontic). katundu thupi ndi mankhwala, kuphatikizapo inertness ndi biocompatibility, mfundo kusungunuka, ductility ndi malleability, kupanga izo zofunika endodontics.

ntchito m'mbiri

Monga biologically inert ndi khola, mtundu wa lalabala ndi zabwino magetsi insulator ndi mkulu dielectric zonse. Matabwa a mitundu komanso wofunika. Western katundu dziko la gutta-percha anali amangoona mu 1842, ngakhale m'dera Aaborijini Malayan ntchito kwa zaka mazana ambiri. Ngati inu tiyeni madzi (madzi) asanduke nthunzi ndipo coagulate mu dzuwa, amatembenuza lalabala imene anaigwira mwakhama angalumikizaniranenso kukhala wololera ngati ndi mkangano, koma osati Chimaona, mosiyana ndi mphira, analandira isanafike atulukira vulcanization.

Ndi 1845, ku UK opangidwa mawaya wanthambo, insulated ndi gutta-percha. Zodzitetezela anali zakuthupi chimateteza kwa oyambirira zingwe sitima zapamadzi wanthambo, kuphatikizapo woyamba transatlantic wanthambo chingwe. Gutta-percha makamaka oyenera imeneyi si anaukira ndi zomera zam'madzi kapena nyama zimene aonongeka yapita sitima zapamadzi zingwe.

Mabukuwa ameja chigawo Chatterton pawiri ntchito ngati sealant chimateteza kwa wanthambo ndi zingwe zina zamagetsi. Kuyambira 1930 polyethylene goda displaces gutta-percha ngati insulator magetsi.

Mu zaka za m'ma XIX, gutta-percha ankagwiritsidwanso ntchito kupanga mipando, makamaka, kampani "Gutta-nsomba", anakhazikitsidwa mu 1847. Pamene usavutike, zinthu zikhoza Mofananamo mipando, zokometsera kapena ziwiya. Ena zidutswa izi kukongoletsa mu Kubadwa Kwatsopano kalembedwe amaonetsa pa chionetsero chachikulu mu 1851 ku Hyde Park mu London.

ntchito masiku ano

Ankagwiritsidwanso ntchito kupanga zodzikongoletsera maliro, chifukwa kunali mdima ndipo akhoza kupangidwa mu mikanda kapena akalumikidzidwa ena. Mfuti nsinga ndi phewa ziyangoyango anayesetsanso wa gutta-percha, amene adapatsa mphamvu ndipo durability. Gofu mpira guttie, amene anali olimba gutta-percha pachimake, anapanga kusintha kwenikweni mu masewera.

Nkhanizi anakhalabe aakulu mafakitale mankhwala mu zaka mazana makumi awiri, koma kenako n'kukhala pang'onopang'ono m'malo khalidwe zipangizo kwambiri kupanga. Ngakhale mbiri yake yaitali, ndi gutta percha akadali ntchito lero. Madokotala a masiku ano kupitiriza ntchito kudzaza mizu ngalande.

"Gutta-percha": phindu

Kodi mfundo imeneyi? Choncho, kwenikweni guttaperchivye - unapangidwa gutta-percha (mphira zachilengedwe). Mophiphiritsa, mawu amamuonera mtengo wokhudzana ndi kusinthasintha ndi elasticity. Pankhani tanthauzo la anthu anayamba kugwiritsidwa ntchito, ndipo wakhala dzina banja atalemba D. V. Grigorovichem nkhani yake wachisoni "gutta-percha mwana."

Nkhani yomvetsa chisoni ya mnyamata, masewera aja, zimene zikunenedwa kuti iye alibe mafupa, kotero kugawa agile iye anali. Kuyambira tsopano, anthu otchedwa gutta-percha - ndi othamanga ndi Tambasula wabwino. Zimapezeka ndi maphunziro yaitali. Gutta-percha mkazi - katswiri wa masewera, kuzuka ndi thupi zosaneneka anu zinthu.

gutta-percha gait

Gutta-percha Kodi zikutanthauza chiyani? mawu awa tsopano yapamwamba kwambiri ndi achinyamata slang limatanthauza kusintha, wokongola, wachisomo. Ngati ife kukumbukira mawu a m'nyimboyo woimba Bianca - "Gutaperchevoy gait ife tikulowa mu" Iarfor "(usiku club) ...".

Pano tili mu malingaliro osati kwambiri zotanuka mofewa monga zofewa, swaying ndi wachisomo. Inu zina kumva za munthu kuti iye ndi guttaperchivaya. Izi zikhoza kutanthauza kusintha ndi achigololo. Ngakhale kuti m'mbuyomu mawuwa kugwirizana ndi mphira ndi gymnasts, tsopano ndi n'chimodzimodzi ndi kugonana.

kusinthasintha zosaneneka

Gutta-percha - modzidziwa kusintha, pulasitiki, ndi mwayi kukhotetsa mu madera osiyana, ndipo mopanda tsankho kwa thanzi lawo. Izi nthawi zambiri m'zimene masewera aja. Ndi manambala awa ndi gutta-percha anthu, gymnasts ndi acrobats ndi kuchuluka kusinthasintha thupi, magulu zidzasintha ndi plasticity imathamangira.