01

Iikati nezinja zabahlobo abaninzi azikhuliswanga kwasebuntwaneni, ngoko ndingathanda ukwazi ukuba zineminyaka emingaphi? Ingaba kukutya amantshontsho namantshontsho? Okanye ukutya inja kunye nekati yabantu abadala? Nokuba uthenga isilwanyana sasekhaya kwasebuntwaneni, uya kufuna ukwazi ukuba singakanani na isilwanyana sasekhaya. Ngaba ziinyanga ezi-2 okanye iinyanga ezi-3? Ezibhedlele, sikholisa ukumisela ubudala bezilwanyana zasekhaya ngamazinyo.

Kukho umahluko omkhulu phakathi kwamazinyo ngenxa yeendlela ezahlukeneyo zokutya kunye nokutya, ukusetyenziswa okwahlukeneyo kwezinyo lokucola amathoyi kunye nokutya okutyiwayo, ngoko ke kuthethwa ngokubanzi, amazinyo aya kuchaneka ngokwentelekiso kumantshontsho namantshontsho ekati, ngelixa ukutenxa kusenokuba kukhulu kumntu omdala. izinja. Kakade ke, oko kubizwa ngokuba kukutenxa kukwaphakathi. Inja eneminyaka emi-5 ihlala isitya amathambo, kwaye izinyo zinxiba ziyafana nenja eneminyaka eli-10 ubudala. Kodwa awukwazi ukudibana nenja eneminyaka eyi-10 enamazinyo afana nenja eneminyaka emi-5 ubudala. Ngaphambili, ndadibana nomnini wesilwanyana oze neenwele zegolide ezibizwa ngokuba yi-17 iminyaka. Yinto enkulu leyo. Kufuneka ichaze iminyaka kunye nemeko yomzimba phambi kokuba inyangwe. Kuqikelelwa ukuba uneminyaka eyi-7 xa uvula umlomo wakho ukuze ubone amazinyo. Ngaba kuphosakele ukukhumbula ubudala bukamakhulu notatomkhulu wakhe?

Ewe, xa usemncinci, unokwazi izifo ezininzi zezilwanyana ezifuywayo ngokujonga amazinyo azo, njengokuthi abanayo icalcium kwaye banemiqolo emibini yamazinyo. Ngoko kubalulekile ukufunda indlela yokujonga ukuphuhliswa kwamazinyo kwaye ugwebe iminyaka kunye nempilo yabo.

02

Inja iqala ukukhula amazinyo 19-20 iintsuku emva kokuzalwa; Kwiiveki ezi-4-5 ubudala, i-incisors yokuqala neyesibini yesifuba ubude obufanayo (i-incisors); Xa iiveki ezi-5-6 ubudala, i-incisor yesithathu ilinganayo; Kumantshontsho eveki ezi-8, i-incisors enqabileyo ikhulile ngokupheleleyo, kwaye amazinyo ahlambulukileyo amhlophe kwaye anqabile kwaye abukhali;

Ngethuba leenyanga ezi-2-4 zokuzalwa, iintsana zaqala ukutshintsha ngokuthe ngcembe amazinyo ahlambulukileyo, kwaye i-incisor yokuqala yaqala ukuwa kwaye ikhula i-incisors entsha; I-incisors yesibini neyesithathu kunye ne-canines zitshintshwa kwi-5-6 yeenyanga; Kwiminyaka eyi-8 ukuya kwiinyanga ezili-12, zonke iimolars zitshintshwa ngamazinyo asisigxina (amazinyo asisigxina). Amazinyo asisigxina amhlophe kwaye aqhakazile, kwaye i-incisors ine-protrusions ebukhali. Ukuba kukho umthubi, kuthetha ukuba kukho itartar;

Xa inja ineminyaka eyi-1.5-2 ubudala, i-peak enkulu ye-mandibular incisor yokuqala (i-incisor) igugile, kwaye iguqa kunye nencopho encinci, ebizwa ngokuba yi-peak wear out; Ngeminyaka eyi-2.5, i-cusp ye-mandibular incisor yesibini (izinyo eliphakathi) yayigugile; Ngeminyaka eyi-3.5, incopho ye-maxillary incisor yayigugile; Ngeminyaka eyi-4.5, i-cusp yezinyo eliphakathi kwe-maxillary yayigugile; Esi sisiphelo sobutsha benja. Izinyo ezitshintshayo ngeli xesha azichatshazelwa kangako yinto yobudala kunezinto zokutya, ngoko ngokuthe ngcembe zichaneka.

Ekubeni inja yayineminyaka emi-5 ubudala, i-incisor yesithathu yebunzi elingaphantsi kunye ne-canine cusp yayigugile kancane (engacwangciswanga), kwaye i-incisors yokuqala neyesibini yayiyi-rectangular; Ngeminyaka eyi-6, i-cusp ye-third maxillary incisor yayigqithise kancane, kwaye amazinyo e-canine ayenamabala kwaye ajikeleze; Ngeminyaka eyi-7, i-mandibular incisors yezinja ezinkulu zigqitywe kwingcambu, kwaye indawo yokugaya yayiyi-oval emile; Kwiminyaka eyi-8, i-mandibular incisors yezinja ezinkulu zigugile kwaye zityekele phambili; Ngeminyaka eyi-10, i-surface yokugqoka i-mandibular yesibini ye-incisor kunye ne-maxillary incisor yayiyi-ellipse ye-longitudinal; Izinja ezinkulu zihlala iminyaka eyi-10-12, kwaye azifane zibe namazinyo awileyo, nto leyo edla ngokunxiba kakhulu;

Xa inja encinane ineminyaka eli-16 ubudala, iphila ixesha elide, okanye inja endala eqhelekileyo. I-incisors iyawa, amazinyo e-canine awaphelelanga, kwaye eyona nto ixhaphake kakhulu ngamazinyo aphuzi angalingani; Ngeminyaka eyi-20, amazinyo e-canine awela, kwaye kwakungekho phantse amazinyo emlonyeni.

03

Xa kuthelekiswa nezinja zidla ngokumana ukugragrama izinto ezinzima ukuze zitshixize amazinyo, nto leyo eyenza kube nzima ukugweba iminyaka ngenxa yokuguga kwamazinyo. Amazinyo ekati akhula rhoqo kwaye aphantse asetyenziswe njengowona mgangatho ulungileyo wokugweba iminyaka.

Amazinyo ekati ekati made, anamandla kwaye abukhali. Amazinyo e-canine anengcambu yezinyo kunye nencam yezinyo. Xa i-cavity yomlomo ivaliwe, amazinyo aphezulu e-canine atholakala kwicala le-posterolateral lamazinyo aphantsi e-canine. Kukho umsantsa emva kwezinyo lenja. I-premolar yokuqala incinci, i-premolar yesibini inkulu kakhulu, kwaye i-premolar yesithathu yeyona inkulu. I-premolars ephezulu kunye nesezantsi zonke zenziwe ngeengcebiso ezine zamazinyo. Inqaku lezinyo eliphakathi likhulu, libukhali, kwaye linefuthe lokukrazula inyama, ngoko likwabizwa ngokuba lizinyo eliqhekezayo.

Ikati ikhula incisor yebele yokuqala kwiiveki ezi-2-3 emva kokuzalwa; I-incisors yesibini neyesithathu kunye ne-canines zenziwe malunga ne-3-4;

Iikati zikhula i-incisors yokuqala kunye neyesibini ukuthatha indawo ye-incisors yebele malunga neenyanga ezi-3.5-4 ubudala; Ngeenyanga ezi-4-4.5, i-incisor yesithathu ikhula ukuze ithathe indawo ye-breast incisor; Amazinyo e-canine akhula malunga neenyanga ezi-5 ukuze athathe indawo yamazinyo omntwana;

Ikati ikhula amazinyo e-premolar malunga neenyanga ezi-2; I-premolars yesibini neyesithathu ikhula kwiinyanga ezi-4-6, kwaye ngokuthe ngcembe ithathelwe indawo ngama-premolars asisigxina; I-molar yokuqala yangasemva ikhula kwiinyanga ezi-4-5. Ubudala obuphambili bokutshintshwa kwezinyo kwiikati malunga neenyanga ezi-4-6. Ngeli xesha, banokuphelelwa ngumdla ngenxa yezinyo elibuhlungu.

Emva kokuba ikati ineminyaka eyi-1 ubudala, i-incisors yayo ephantsi iqala ukugqoka; Emva kweminyaka eyi-7, amazinyo ekati ekati aqala ukukhula ngokuthe ngcembe, kwaye i-mandibular incisors yaba yingqukuva; Emva kweminyaka eyi-10, amazinyo angaphambili omhlathi ongasentla wekati asenokuwa, ngoko ke unokuhlengahlengisa indlela otya ngayo ngokuhambelana notshintsho lwenyama.