Mitundu ya braces

Nkhono zimatchedwa kuti orthodontic braces ya mitundu yosiyanasiyana, yomwe imadalira mano otha kuluma. Pakali pano iyi ndiyo njira yomwe amagwiritsidwa ntchito kwambiri mu orthodontics pothetsa mavuto a kuluma. Ili ndi pafupifupi zaka zopanda malire. Pali ndondomeko yowonjezera ya arcs yoonda ndi zokopa zosungidwira kwa iwo, zowonjezera.

Ndani anayambitsa dongosolo la bracket?

Ngakhale ku Igupto wakale, anthu, monga inu mukudziwa, ankasamala za maonekedwe awo. Sizinali zosiyana ndi kumwetulira. Kenaka pofuna kukonza kuluma kwagwiritsidwa ntchito zipangizo kuchokera ku catgut, kutali kwambiri ngati zipangizo zamakono zamakono. Kukula mwakhama kwa orthodontics kunali m'zaka za zana la XIX, pamene madokotala a ku America adalenga mtsogoleri woyamba wa mitundu yonse yamakono yamakono. Chipangizochi chinali ndi zitsulo:

• arc;
• zida;
• mtedza;
• ndi waya, kumene makonzedwe onsewa ankamangiriridwa mano.

Kwa zaka zambiri, wasayansi wina dzina lake Engle anayesa kugwiritsa ntchito zipangizo zake, kuyesa mphamvu zopangidwa ndi orthodontic ndikuphunzira zotsatira zovulaza ndi zotsatira zoopsa za mano, mapewa ofewa ndi ziwalo. Kuchokera apo, kugwiritsa ntchito zipangizo kwasinthika ndipo, mpaka pano, njira iyi yakhala yamakono komanso yowona chaka chilichonse.

Pali zigawo zingapo za makina osakaniza. Mwa makonzedwe a mazinyo pa mano, iwo akhoza kukhala ovala kapena amodzi. Maseŵera ndiwo machitidwe omwe amakolo ali pambali patsogolo pa dzino. Chabwino, ndi lingual (kuchokera ku liwu la Chilatini "lingua", ndiko kuti, chinenero) kapena zilankhulo ziri mkati mwa mano, ndipo siziwoneka kwa ena. Mitundu yonseyi ili ndi ubwino ndi ubwino. Mwachitsanzo, lilime lachilankhulo ndilokongoletsa, sichiwoneka ndi kumwetulira ndi kukambirana, koma ndi kovuta kwa iwo kuti azizolowereka, atavala, kusintha kwa mawu, komanso pali vuto la lilime. Zojambula zakunja sizodzikongoletsera, koma zimakhala zotchipa ndipo kusintha kwa zipika ndi mankhwalawa kangapo mofulumira.

Malingana ndi mfundo zadakonzedwe kake, pali:

1. Metal. Pali mitundu yambiri ya zitsulo zamkuwa: chitsulo chosapanga dzimbiri, titaniyamu, golide, alloys. Mitundu iwiri yomaliza imagwiritsidwa ntchito kwa odwala omwe amachititsa kuti asagwiritsidwe ntchito pazitsulo zamakono. Mitundu yachitsulo ikhoza kukhala yachibadwa, ndiko kuti, ndi kusintha kwa nthawi ndi nthawi kwa magulu a mphira ndi mphira. Izi ndi njira zomwe arc siikonzedwe ku loko la waya ndipo ikhoza kugwedezeka ndi mphamvu yaying'ono yotsutsana. Zimenezi zimabweretsa zotsatira zofulumira kwambiri ndipo zimakhala zomasuka kwa wodwalayo. Pali mitundu iwiri ya arcs ya ubongo wotere: yogwira ntchito. Zovuta za machitidwe amenewa ndi mtengo wapamwamba kusiyana ndi zolemba zapamwamba.
2. Ceramic. Zapangidwa ndi miyala yowonjezera, amaoneka okongola kwambiri kuposa zitsulo ndipo amavulaza mucous. Amasankhidwa molingana ndi mtundu, umene ndi woyenera kwambiri kwa mano opotoka .
3. Safira. Zodzoladzola zopangira miyala ya safiro zakhala zothandiza kupanga zokopa zoterezi. Iwo ali owonetseredwa ndipo kotero pafupifupi osawoneka kwa ena. Onetsetsani kuwonjezeka kwa fragility poyerekeza ndi chitsulo ndi mtengo wokwera kwambiri.
4. Wopangidwa. Zimakhala zokongola kwambiri kuposa zitsulo, koma zochepa kwambiri ku ceramic ndi safiro m'nkhani za aesthetics.
5. Pulasitiki. Pa mtengo, machitidwewa ndi otsika mtengo kusiyana ndi a ceramic, koma amakhalanso ndi zovuta zawo: mphamvu yochepa, kukhudzidwa ndi zinthu zojambula.
6. Kuphatikizidwa .

Nthawi ya chithandizo cha malocclusion ndi yeniyeni payekha ndipo imawerengedwa ndi odwala-dokotala wodziwa dokotala.