Itandukaniro riri hagati yatewe namenyo karemano
Kuva: zhonghuakouqiang.cn
Guterwa ntabwo bifite ligamento yinyo yinyo karemano, kandi osseointegrated hamwe namagufwa ya alveolar. Hano hari proprioceptors muri parontontal ligament, ariko hariho "imyumvire yamagufa" gusa. Tactile sensitivite yinyo karemano yikubye inshuro 8,75 iyatewe. Kubwibyo, amenyo karemano akunda kumva imbaraga zo kuruma bikabije kandi bigatanga igisubizo kirinda. Periodontal ligament ifite umurimo wo kugabanya ingaruka no gukwirakwiza imbaraga zo kuruma. Bitewe no kubura ligamento ya parontontal, kugendagenda kwatewe mu cyerekezo gihagaritse ni 3 ~ 5 mm, naho icyerekezo cya horizontal ni 10 ~ 50 μ m; mugihe amenyo asanzwe ari 25 ~ 100 μ m na 56 ~ 120 mm.
Mubikorwa byimbaraga zidasanzwe, kugenda kw amenyo karemano harimo kwihuta, bigoye, kutagira umurongo mugace ka parontontal ligamente na elastique ya elastike igufwa rya alveolar; mugihe uwatewe afite gusa umurongo uhindagurika wa elastike yamagufwa ya alveolar. Hariho fibre ya parontontal fibre mubyerekezo bitandukanye mugice cya parontontal, ishobora kurwanya imbaraga zo kuruma mubyerekezo byose. Iyo ikorewe imbaraga zuruhande, ikigo kizunguruka cyinyo karemano giherereye kuri 1/3 cyumutwe wumuzi, kandi imihangayiko irashobora gukwirakwira murwego runini.
Usibye lazeri yogushira kumurongo woguhuza-abutment, icyerekezo cya fibre ikikije igiterane kirasa nuwatewe. Iyo uwatewe yatewe imbaraga zuruhande, hejuru yumusozi wa alveolar ikora uruzitiro aho guhangayikishwa cyane, ibyo bikaba byongera ibyago byo kongera amagufwa mu ijosi ryatewe. Urebye kuri morphologie, ibyatewe ahanini ni inkingi cyangwa bifunze, mugihe igice cyimbere cy amenyo karemano gifite imiterere imwe idasanzwe, kandi amenyo yinyuma afite byinshi. Kubwibyo, iryinyo risanzwe rifite ahantu hanini ho guhurira nigufwa rya alveolar, rifite ibyiza byo gukwirakwiza imihangayiko no kurwanya kuzunguruka. Mubyongeyeho, modulus ya elastike yinyo karemano yegereye iy'amagufwa ya alveolar. Modulus ya elastique ya titanium cyangwa titanium-zirconium yatewe mumavuriro ikubye inshuro 5-10 iy'amagufwa ya alveolar, kandi intera-igufwa-igufwa ikunda kugaragara yibanda kuri Stress.
Kwirinda umutwaro udasanzwe nintego nyamukuru yo kugarura ibintu byashizweho. Igishushanyo mbonera gishobora kugabanya ubuso bwa 30% -40%, kugabanya muburyo bukwiye, kandi bigatanga 1.0-1.5mm ya fossa yo hagati. Hiyongereyeho, ikigereranyo gikwiye-ku-bimera, uburebure bwikamba hamwe nuburebure bwa cantilever nabyo bigomba gutegurwa. Iyo amagufwa yumurwayi ari make, kwikorera-gutera imbere birashobora gukoreshwa cyangwa ubuso bwatewe burashobora gukomera.
Birasabwa ko abarwayi bafite molars bambara udukariso, bagakurikirana mugihe, kandi bagahindura imitekerereze yabo. Abarwayi barwaye parontontite bagomba gusubirwamo nyuma yo kugenzurwa na parontontitis. Ukurikije umubare w amenyo yabuze, umwanya hamwe nubuso bw amenyo, hatoranijwe ubwoko bukwiye, kandi gahunda ya oclusal yo kugarura amenyo yatewe. Igishushanyo mbonera cy’amenyo yatewe kiracyakeneye ubundi bushakashatsi kugirango ubone ibimenyetso bifatika bishingiye ku buvuzi.
Igihe cyo kohereza: Nyakanga-14-2021