7 



cbohmt> cjriflHieM'B Cb HapyKHon oöpasoBajin AOBOJibHO npocrpaHHyio nOBepx- 

 hoctb, noApasA'feneHHyK) tojibko oahhm'b Mem'AynyHOHHbiM'b yrnyöJiemeM'b- 

 3ajiHBOMT>. BojTBe hcho yKaabiBaKyfb Ha sro prieme HapyKHan h BHyrpeHHHH 



CK II a AK H SMa.'IH, BXOAHUI,ifl BHyTpb 3y6a. Cl» HapyÄHüfi CTOpOHW BT. ,ü,OJIHHKf» 



Me»p,y sa^Heii h cpe^HeH napaMH jiyHoneK'b HaxoAHTCH hcho BbipaaceHHbiH 

 inm(|)e:ib, KOTopbin npn CTHpaHiH A ajI f> noßepxHOCTb TpeyrojibHaro onepTamH. 

 BTOpoS mojiohhmh (d 2 ) 3y6t — To»ce nepeA'b cbohmi> BbinaAeHieM'b. Ero oep- 

 Tan, Cb nepe.ioMOMT> Ha cpeAHH'ß noBepxHOCTb noApasA^neHa flByMH ocrpoß- 

 KaMH SMa/iH, no KOTopbiM'b MoacHo sannbO^HTb o npHcyTCTBiH bt> Hewh TaKace 

 Aßyxi> MeKAy^iy Ho t iHbix'b npocrpaHCTB'b. CyAHTb o (^opM'fe h cnoco6f> Bbipa- 

 ■xema 9Thxt> noBepxHOCTeft Ha HecrepTOM'b syö'B ne HBJiaeTCH B03MO»HbiMi>, 

 noneiny bch $opMa sToro 3y6a He MOiKeT'b 6biTb B03CTaHOBneHa. SaAHiii 

 ocrpoBOK'b HBnaeTCH tojibko He3Ha i raTejibHbiM'b öyropKOMT. eui,e He CTepmefica 

 3MajiH, npe,o,CTaBnHK)u],HM'b coöoii noBHAHMOMy a h0 crepTaro MeÄAyny HOHHaro 

 npocTpaHCTBa — ynryöneHiH. BTopoe Me>KAyn} r HO i iHoe yrjiyöjieme hcho Bbipa- 

 aceHO hmkoh 3MSLHH TpeyronbHaro onepTamH. 



B.iaroAapH H3JioMy qenrocTH bt> oönacTH 9Toro 3y6a, HaMT> BHfleH'b HaxoAHmificH 



BHVTpH HCltOCTH nOCTOHHHBIH npeAKOpeHHOH 3y6T) (pi>), KOTOpWM H nOHBHJICH 6bl 



Hapyacy Toriacb nocirB BbinaAemn TonbKo hto onncaHHaro d 2 . HecoMH'BHHO, hto 

 noAOÖHbrä >Ke 3x6t> (kohc^ho p!) naxoAHTCH BHyTpH qeniocTK h noAT> syöoM'b d 3 , 

 KOTopbiii TaK»e onncaH'b. TaKon me 3y6i> HaxoAH/icH h no/Vb oTcyTCTByKtm.HM'b d , . 

 Tenepb c.TBAyei"b eme oci'aHOBHTbCH Ha HSM'BpeHiH. J^iiHHa 3y6oBT> (c3aAH — HanepeAT>): 

 m 2 = 23 mm., nii=22 mm., d 3 = 24 mm., d 2 = 8 mm. Bbicora nemocra bt> oönacTH 

 MeacAy nix h d 3 = 33 mm. ÜHTKa ne/nocrn HM^eTTb xapaKTepHyio oTÖpomeHHOCTb 



BHH31>. CoHJieHOBHBIH OTpOCTOKT, HeJIIOCTH o6jIOMaHT>. 



90 — 8 A Cn'EAybonuiM'b no BoapacTy hbuhctch syÖHoft pHAT>, npeACraBJieHHbift 



ji*boh HeniocTbK) Ns 90— 8 A. OcTaHaßnHBaTbCH Ha HeMT> He 6yAy bt> bha) t 

 Toro, hto Bce CKaaaHHoe npwAeTCH noBTOpHTb npH onncaHiH cn'BA- Ns, koto- 

 pbiö onnuiy noApoÖH'fee. Pa3HHH,a bt> sthxi» A B yxi> neniocTHX'b (oTHOCHTenbHO 

 qHCTO OAOHTorpai|)H i iecKHX'b npH3HaKOB'b) saKUKD^aexcH TonbKo bt> tomi, hto 

 qe^iocTb JVe 90 — 8 — A MeHte crepTa, i^m^ cn'BAy 1011 ^ 21 ^» T - e - HeMHoro Monoace. 

 3y6-b mj (nepBbifi KopeHHOii) noBpoKAeHT. — oö^OMaHa ero BHy Tpe hhhh 

 CTopoHa. 



90 — 8 51 onHCbiBaro 9Ty qejiKDCTb hst> A B y x<I >> TonbKo b-b BHAy ny^iueö en 



coxpaHHOCTH. 9to — no^TH cosepineHHO u,-fenaH npaBan neniocTb (T. I, ^)Hr. 4 a, b, c) 

 Cb nonHbiM'b 3y6HbiMT. pHAOMT», *iyTb — nyTb öonbuieö CTepTOCTbK), H-fcwb y 

 npeAbiAyuieß. 9Ty qejiKDCTb mokho cpasy nocxaBHTb nocnli onncaHHOH nejno- 



CTH 88 5, HTOÖbl CpaBHHTb MOHOAyK) H B3pOCJiyK) HejIIOCTH. 



ßA^cb y>Ke coBepmiinacb nepeM'BHa B'b tomt> oTHOuieHin, hto MonoHHbie 3y6bi bcb 



CM'BHHnHCb nOCTOHHHbIMH npeAKOpeHHbIMIl H HOHBHJICH y>Ke B'b CTeneHH He3HaHHTeJIb- 



Haro cTHpaHiH h TpeTifi KOpeHHoö (m 3 ) 3y6i>. XapaKTepHan OKaTocTb srvix'h 3v6obt> 

 Cb 6okobt> HBJineTCH oahhmT) H3i> npH3HaKOBi> BHAa Cervus tarandus. 



M 3 npeACTaBjiHeTCH rpeMH napaMH nyHoneK'b, H3T> KOTOpbixTj nocn'BAHHH, 3aAHHH, 

 pa3BHTa oneHb cnaöo 11 öo/ilie, q^Mi BAßoe, MeHbme nepBbixT> jiyHOKT>. 3Ta TpeTbH 

 napa iiyHOKij bt. AaHHoft nentocrvL eui,e no^TH He crepTa n Cb BHyTpeHHeö CTopOHbi 



nejIIOCTH BHAHO, 1TO OHa Ha BHyTpeHHeÖ CTOpOH'B A'B^HTCH CKJiaAKOH '3MaJlH Ha 2 3y- 

 ÖOBHAHblH HaCTM, H3T> KOTOpbIXT> 3aAHHH CJIHBaeTCH HesaM^THO nO'lTH Cb JiyHKOH 



HapyKHOH. Cn'BAyK)iu,iH napbi nyHOKT> TaK'b »e, KaKT> n Ha KOpeHHOM-b BTOpOMT. h 

 nepBOMT» (m 2 h nii), HM'BbOT'b Hapy>KHbiH nyHKH don^e OKpyraofi c{)opMbi, bt> to BpeMH 

 KaKT> nyHKH, oöpameHHbiH BnyTpb lenbOCTn, oTnnqaioTCH yrnoßaTon (ftopMon, BCTBACTBie 

 p-B3KHx-b CK.iaAOKT> 3MajiH BHyTpeHHen CTopOHbi 3y6a. B'b creneHH CTHpaHiH, noAOÖHon 



TOH, KaKaH HM'BeTCH B'b OIJHCblBaeMOH HejIK)CTH, 3aM'BTH0, 'ITO npH CTHpaHiH nepeAHHH 



