I-Dentin yinto emhlophe eqinile etholakala emazinyweni. Iwungqimba olungaphandle kakhulu lwezinyo futhi lumbozwe ungqimba loqweqwe loqweqwe lwawo. I-Dentin yakhiwe ngokuyinhloko ngamaminerali, njenge-calcium ne-phosphate. Futhi iqukethe amaprotheni nezinye izinhlanganisela eziphilayo. I-Dentin imelana kakhulu nokuphuka nokuhuzuka.
I-Dentin iyinto ebalulekile empilweni yamazinyo. Ivikela ingaphakathi lezinyo emigodini yamazinyo. Ukubola kwamazinyo yisifo esenzeka lapho amagciwane edla ushukela nama-carbohydrates ekudleni. Lokhu kukhiqiza i-asidi, engacekela phansi koqweqwe lwawo futhi ibangele izimbotshana. I-Dentin isiza futhi ukusekela uqweqwe lwawo futhi luwugcine unamathele ezinyo.
I-dentin nayo itholakala ezimpandeni zamazinyo. Izimpande zembozwe ungqimba lwezicubu ezixhumeneyo, olubizwa ngokuthi i-root cementum. Usimende wezimpande uvikela izimpande futhi uzinike ukusekelwa. Kuyasiza futhi ukugcina amazinyo esendaweni.
I-Dentin iyinto ebalulekile empilweni yamazinyo. Ivikela ingaphakathi lezinyo emigodini yamazinyo. Ukubola kwamazinyo yisifo esenzeka lapho amagciwane edla ushukela nama-carbohydrates ekudleni. Lokhu kukhiqiza i-asidi, engacekela phansi koqweqwe lwawo futhi ibangele izimbotshana. I-Dentin isiza futhi ukusekela uqweqwe lwazo futhi lugcine lunamathele ezinyoni.
I-dentin nayo itholakala ezimpandeni zamazinyo. Izimpande zembozwe ungqimba lwezicubu ezixhumeneyo, olubizwa ngokuthi i-root cementum. Usimende wezimpande uvikela izimpande futhi uzinike ukusekelwa. Kuyasiza futhi ukugcina amazinyo esendaweni.
I-Dentin
https://www.youtube.com/watch?v=nhwkKwgjP3M
Umehluko phakathi koqweqwe lwawo kanye ne-dentin?
https://www.youtube.com/watch?v=TTWUMb7AeGQ
Iyini i-dentin futhi yini umsebenzi wayo?
I-Dentin iyizicubu ezikhethekile ezixhumene nezitholakala ezinyoni. Umsebenzi wawo oyinhloko ukuvikela uqweqwe lwamazinyo futhi lusebenze njengesendlalelo sokuvikela ulwelwesi lwamazinyo. I-Dentin ibuye ibe nesandla ekwakhekeni kwezinyo futhi ilinikeze ukubukeka kwalo okuhlukile.
I-dentin ikhiqiza ini?
I-Dentin yinto etholakala emazinyweni. Yakhiwe nge-matrix yamaprotheni namaminerali, okwenza kube nesakhiwo esiqinile. I-Dentin inembangela yokuthi amazinyo amelane nokuhlafuna nokubola.
Kwenzekani lapho i-dentin ivezwa?
I-Dentin iyizicubu ezithambile ezitholakala ngaphansi koqweqwe lwamazinyo akho. I-Dentin yakhiwe ungqimba lwangaphandle (olubizwa ngokuthi i-Sharpey's tuberosity) kanye nongqimba lwangaphakathi. Ungqimba lwangaphakathi lwe-dentin luthambile futhi lubizwa ngokuthi i-dentin emanzi. Ungqimba lwangaphandle lwe-dentin luqinile futhi lubizwa ngokuthi i-dentin eyomile.
Lapho i-dentin ivezwa, ingaba buhlungu. I-Dentin imbozwe ungqimba oluvikelayo loqweqwe lwamazinyo. Lapho uqweqwe lwamazinyo lonakalisiwe noma lulahlekile, i-dentin ivezwa. I-dentin eveziwe ingase ibe buhlungu ukuyithinta noma ukuyihlikihla. Kungase futhi kube buhlungu uma kuvezwe emanzini ashisayo noma abandayo.
Liyini ifomu lamazinyo?
I-Dentin yinto ethambile, eqinile etholakala emazinyweni. Imhlophe futhi i-opaque, futhi imbozwe ngoqweqwe lwawo phezulu kwamazinyo. I-Dentin ivikela ingaphakathi lezinyo futhi ilenze libe yindilinga.
Uyini umsebenzi we-dentin?
I-Dentin yinto emhlophe eqinile etholakala emazinyweni. Umsebenzi oyinhloko we-dentin ukuvikela inzwa yamazinyo. I-Dentin isiza futhi ukusekela koqweqwe lwawo lwamazinyo futhi ilolonge izinyo.
Ikhiqizwa kanjani i-dentin?
I-Dentin yinto emhlophe eqinile etholakala emazinyweni. Ikhiqizwa emzimbeni womuntu ngesenzo samaseli abizwa ngokuthi ama-odontoblasts. I-Dentin yakhiwa ikakhulukazi i-calcium phosphate ne-calcium carbonate.
Kungani i-dentin ibaluleke kangaka empilweni yamazinyo?
I-Dentin iyisicubu esakhiwe i-organic and mineral matrix, etholakala emazinyweni. I-Dentin ibalulekile empilweni yamazinyo ngoba:
- Ivikela uqweqwe lwamazinyo: i-dentin itholakala ngaphansi koqweqwe lwawo futhi isebenza njengesendlalelo sokuvikela.
- Yandisa ukumelana nezinyo: i-dentin isiza ukubamba izingxenye zezinyo ndawonye, ilenze lingazweli.
- Yehlisa ubungozi bemigodi: i-dentin inezindawo zokulwa namagciwane ezisiza ukunciphisa ubungozi bemigodi.
I-dentin iyithinta kanjani ubuhle bamazinyo?
I-Dentin iyisicubu esibalulekile esitholakala ngaphansi koqweqwe lwamazinyo oluvikela izinzwa nama-pulps amazinyo. I-Dentin iyingxenye ebalulekile yobuhle bamazinyo njengoba inendawo ebushelelezi, ecwebezelayo ebonisa ukukhanya ngendlela efanayo koqweqwe lwawo. Ngaphezu kwalokho, i-dentin inombala omhlophe omsulwa ophikisana nombala we-koqweqwe lwawo futhi idala umphumela wobuhle okhangayo. Ukwelashwa kwamazinyo okuningi kwezimonyo kugxila koqweqweni lwamazinyo akho, kodwa i-dentin nayo idlala indima ebalulekile ekuthandeni amazinyo akho.
