01

Injangwe nimbwa nyinshi zinshuti ntizirera kuva mubana, none ndashaka kumenya imyaka yabo?Nukurya ibiryo by'inyana n'ibibwana?Cyangwa kurya ibiryo by'imbwa n'injangwe?Nubwo wagura itungo kuva mu bwana, uzashaka kumenya imyaka itungo rimaze.Ni amezi 2 cyangwa amezi 3?Mubitaro, mubisanzwe tugena imyaka yinyamanswa dukoresheje amenyo.

Hariho itandukaniro rikomeye hagati y amenyo bitewe nibiryo bitandukanye nuburyo bwo kugaburira, gukoresha uburyo butandukanye bwo gusya amenyo ibikinisho hamwe nudukoryo, mubisanzwe rero, amenyo azaba afite ukuri kubibwana ninjangwe, mugihe gutandukana bishobora kuba binini kubantu bakuru imbwa.Birumvikana ko ibyo bita gutandukana nabyo biringaniye.Imbwa yimyaka 5 ihora irya amagufwa, kandi kwambara amenyo ni nkay'imbwa yimyaka 10.Ariko ntushobora guhura nimbwa yimyaka 10 ifite amenyo amwe nimbwa yimyaka 5.Mbere, nahuye na nyiri amatungo yazanye umusatsi wa zahabu witwa 17 ans.Icyo ni ikintu gikomeye.Irakeneye kumenya imyaka n'imiterere y'umubiri mbere yuko bivurwa.Bivugwa ko afite imyaka 7 iyo ufunguye umunwa kugirango ubone amenyo.Nibeshya kwibuka imyaka ya sekuru?

Birumvikana ko iyo ukiri muto, urashobora kandi kumenya indwara nyinshi zinyamanswa witegereje amenyo yabo, nko kumenya niba zabuze calcium kandi zifite imirongo ibiri yinyo.Ni ngombwa rero kwiga uburyo bwo kureba iterambere ry amenyo no guca imyaka yabo nubuzima.

02

Imbwa itangira gukura amenyo yimeza nyuma yiminsi 19-20 ivutse;Mugihe cibyumweru 4-5, ibibyimba byambere nubwa kabiri ni uburebure bumwe (incisors);Iyo ibyumweru 5-6 bimaze, incisor ya gatatu niyo;Kubibwana byibyumweru 8, ibibabi byamababi birakura neza, kandi amenyo yamababi yera kandi yoroheje kandi atyaye;

Mugihe cy'amezi 2-4 avutse, ibibwana byatangiye gusimbuza buhoro buhoro amenyo yimeza, hanyuma incisor ya mbere itangira kugwa no gukura ibisebe bishya;Igice cya kabiri n'icya gatatu hamwe na kineine bisimburwa ku mezi 5-6;Ku mezi 8 kugeza kumezi 12, imitsi yose isimbuzwa amenyo ahoraho (amenyo ahoraho).Amenyo ahoraho yera kandi yaka, kandi incisors zifite amababi akomeye.Niba hari umuhondo, bivuze ko hariho tartar;

Iyo imbwa ifite imyaka 1.5-22, impinga nini ya mbere ya mandibular incisor (incisor) irashaje, kandi igatwarwa nimpinga nto, bita impinga ishaje;Ku myaka 2.5, isanduku ya kabiri ya mandibular incisor (iryinyo ryo hagati) yarashaje;Ku myaka 3.5, impinga ya incisor ya maxillary yarashaje;Ku myaka 4.5, iryinyo ryinyo yo hagati ryarashaje;Ngiyo iherezo ryubusore bwimbwa.Guhindura amenyo muri iki gihe ntabwo bigira ingaruka cyane kumyaka ugereranije nibiryo, bityo bigenda buhoro buhoro.

Kubera ko imbwa yari ifite imyaka 5, inciseri ya gatatu yuruhanga rwo hepfo hamwe nigituba cya kine yari yambarwa gake (ntabwo iringaniye), naho ibice bya mbere nubwa kabiri byari urukiramende;Ku myaka 6, igituba cya gatatu cya makillary incisor yambaraga gato, kandi amenyo ya kine yari yuzuye kandi azengurutse;Ku myaka 7, imashini ya mandibular yimbwa nini yambaraga kumuzi, naho gusya byari ova ihagaritse;Ku myaka 8, imashini ya mandibular yimbwa nini yambarwa kandi yegamiye imbere;Ku myaka 10, hejuru yimyambarire ya mandibular incisor ya kabiri na incisor ya maxillary yari ellipse ndende;Imbwa nini muri rusange zibaho imyaka 10-12, kandi ni gake zifite amenyo agwa, ubusanzwe kwambara cyane;

Iyo imbwa nto ifite imyaka 16, iba ifite igihe kirekire, cyangwa ni imbwa isanzwe.Ibibyimba bigwa, amenyo ya kine ntabwo yuzuye, kandi ayakunze kugaragara ni amenyo yumuhondo ataringaniye;Ku myaka 20, amenyo ya kine yaguye, kandi nta menyo yari afite mu kanwa.

03

Ugereranije n'imbwa akenshi zihekenya ibintu bikomeye byo guhekenya amenyo, bigatuma bigora kumenya imyaka kubera kwambara amenyo.Amenyo y'injangwe akura buri gihe kandi arashobora gukoreshwa nk'urwego rwiza rwo gusuzuma imyaka.

Amenyo ya cine y'injangwe ni maremare, akomeye kandi atyaye.Amenyo ya kine afite imizi yinyo hamwe ninyo yinyo.Iyo umunwa wo mu kanwa ufunze, amenyo yo hejuru ya canine aba ari kuruhande rwinyuma yinyo yo hepfo.Hariho icyuho inyuma yinyo ya kine.Premolar yambere ni ntoya, premolar ya kabiri ni nini, naho premolar ya gatatu nini nini.Hejuru na hepfo premolars zose zigizwe ninama enye.Amenyo yo hagati yinyo nini, atyaye, kandi afite ingaruka zo gutanyagura inyama, bityo nanone yitwa iryinyo ryacitsemo ibice.

Injangwe ikura amabere yayo ya mbere nyuma y'ibyumweru 2-3 nyuma yo kuvuka;Igice cya kabiri n'icya gatatu hamwe na kine byakozwe hafi 3-4;

Injangwe zikura igice cya mbere nicyakabiri kugirango zisimbuze ibere ryamezi hafi 3.5-4;Ku mezi 4-4.5, incisor ya gatatu irakura kugirango isimbuze amabere;Amenyo ya Canine akura mugihe cyamezi 5 kugirango asimbuze amenyo yumwana;

Injangwe ikura amenyo ya premolar amezi hafi 2;Icya kabiri n'icya gatatu amababi ya premolar akura mumezi 4-6, kandi agasimburwa buhoro buhoro na premolar zihoraho;Umuyoboro wambere winyuma ukura mumezi 4-5.Imyaka nyamukuru yo gusimbuza amenyo yinjangwe ni amezi 4-6.Muri iki gihe, barashobora kubura ubushake bwo kurya kubera amenyo.

Injangwe imaze imyaka 1, ibice byayo byo hasi bitangira kwambara;Nyuma yimyaka 7, amenyo yinjangwe yinjangwe yatangiye gusaza buhoro buhoro, hanyuma imitsi ya mandibular irazunguruka;Nyuma yimyaka 10, amenyo yimbere yurwasaya rwo hejuru rwinjangwe arashobora kugwa, urashobora rero guhindura imirire yawe ukurikije impinduka za te