Ukugqithwa okusemgangathweni yindlela yokuthetha, apho izihlunu eziphakamisa umhlathi ophantsi zingqinelana kwaye zixhaswe ngokubanzi kumacala omabini. Ngenxa yoko, xa iifolo zihlanganisiwe, inani elininzi lamanqaku axhalelana ngalo, olwenzela ukwakhiwa kokungabikho okungafanelekanga . Iintloko ze-articular zihlala zihlala phantsi kwinqanaba lethole.
Iimpawu zobume obuphakathi
Iimpawu eziphambili ze-occlusion central:
- nganye inzantsi kunye neenyosi ziphezulu zivale ngokuchasene nayo (ngaphandle kwe-incisors esezantsi kunye nemithathu ephezulu);
- kwicandelo eliphambili, onke amazinyo aphantsi apheka amazinyo angaphezulu ngokungabi ngaphezu kwe-1/3 yesithsaba;
- i-right molar ephezulu idibanisa namazinyo amabini aphantsi, ewafihla ngo-2/3;
- i-incisors yomhlathi osezantsi udibanisa neengxube ze-palatal zomhlathi omphezulu;
- i-buccal hillocks ephantsi kwesikhohla esisezantsi iguqulwe ngaphezulu;
- Iibhulophu ezinamabala ezantsi kwesikhohla esisezantsi zikhoyo phakathi kweelwimi kunye ne-buccal;
- Phakathi kwe-incisors esezantsi nephezulu, umgca ophakathi uhlala eweni enye.
Inkcazo ye-occlusion occlusion
Kukho iindlela eziliqela zokumisela ukugqithiswa okuphakathi:
- Inkqubo yokusebenza - intloko yesigulane ibuyele emuva, ugqirha ubeka iminwe yenkcazo kumazinyo omhlathi osezantsi kwaye ubeka iikona ezizodwa kumagumbi omlomo. Isigulana siphakamisa intsimbi yolwimi, sisichukumisa isalathisi size siphephe ngexesha elifanayo. Xa umlomo uvala, unokubona indlela i-dentition ivala ngayo.
- Isicwangciso se-Instrumental - sihlinzekela ukusetyenziswa kwesixhobo esichazela ukuhamba kwemigodi kwinqwelo elungileyo. Xa kugqitywa ukungabikho kwamanye amazinyo kunye nokungabikho kwamanye amazinyo, umhlathi osezantsi unqunywe ngokufudula, ucofa kwi-chin.
- Inkqubo ye-Anatomical and physiological - ukuzimisela kukaRhulumente ekuphumleni komzimba.