齲病教研 牙發(fā)育異常和牙外牙慢性損牙本質(zhì)過(guò)牙發(fā)育期間，由于全身疾患、營(yíng)養(yǎng)或嚴(yán)重的乳牙根尖周導(dǎo)致釉質(zhì)結(jié)構(gòu)異常。釉質(zhì)發(fā)育不全、釉質(zhì)礦化不臨床表

重癥：帶狀或窩狀的實(shí)質(zhì)缺損。防治原復(fù)合樹(shù)脂或烤瓷冠修遺傳性牙本質(zhì)可分為遺傳性牙本質(zhì)發(fā)育不全及遺傳性牙本質(zhì)發(fā)育不 牙根短、髓室根管治療原乳牙：牙合墊；恒牙：烤瓷冠、牙合性牙半月形切牙、桑葚狀磨牙、蕾狀磨牙分為：內(nèi)源性牙、外源性氟牙癥、四環(huán)素又稱氟斑牙或斑

病因：牙發(fā)育礦化時(shí)期攝入過(guò)多的機(jī)制：氟濃度過(guò)臨床多見(jiàn)于恒牙同一時(shí)期萌出的牙的釉質(zhì)有白色或褐色的斑塊，可有實(shí)質(zhì)缺損耐磨性差、抗酸性嚴(yán)重者伴有全身癥Dean’sAnindividual'sfluorosisscoreisbasedonthemostsevereformoffluorosisfoundontwoormoreteeth.Aseverecaseofdentalfluorosis,"mottled

HenryTrendleyDean(August25,1893–May13,1962),WinstanleyPark,Illinois.ThefirstdirectoroftheNIDCRandapioneerinvestigatorofwaterfluoridation.TheIADRhasanawardnamedafterDr.Dean,calledtheH.TrendleyDeanMemorialAward,recognizingmeritoriousresearchinepidemiologyandpublicVerymild(score:Small,opaque,paperwhiteareasscatteredirregularlyoverthetoothbutnotinvolvingasmuchasapproxima y25%ofthetoothsurface. Mild(score:Thewhiteopaqueareasintheenameloftheteetharemoreextensivebutnotinvolveasmuchas50%oftheModerate(score:Allenamelsurfacesoftheteethareaffected,andsurfacessubjecttoattritionshowmarkedwear.Severe(score:Allenamelsurfacesareaffectedandhypoplasiaissomarkedthatteralformofthetoothmaybeaffected.氟牙癥TFI標(biāo)準(zhǔn)和評(píng)分體氟牙癥牙面指數(shù)TSIF標(biāo)準(zhǔn)和評(píng)分標(biāo)FRI標(biāo)準(zhǔn)和評(píng)分標(biāo)牙發(fā)育礦化時(shí)期使用四環(huán)素族藥物引起的牙黃色——(陽(yáng)光)——診室內(nèi)漂家庭漂兩個(gè)正常牙胚融合而一個(gè)內(nèi)向的凹陷將一個(gè)牙胚不完全分牙根完全發(fā)育后發(fā)生粘結(jié)的畸形常見(jiàn)下頜前磨牙，尤以第二前磨圓鈍無(wú)妨礙：不處尖而長(zhǎng)：蓋髓治療、多次少量調(diào)牙髓根尖變：根尖發(fā)育成形術(shù)/根尖誘導(dǎo)成形牙發(fā)育中，成釉器過(guò)度卷疊或局部過(guò)度增殖，深入到牙分為：畸形舌側(cè)溝、畸形根面溝、畸形舌側(cè)尖和牙中牢固附著于牙骨質(zhì)表面的釉質(zhì)小額外Hypodontiaistheconditionatwhichthepatienthasmissingteethasaresultoftheirfailuretodevelop.describesasituationwherethepatientismissingupto6teeth,excludingthe3rdTheconditionofmissiner6teeth,excluding3rdorwisdomteeth,iscalledAnodontiaisararegeneticdisordercharacterizedbythecongenitalabsenceofallprimaryorpermanentteeth.早萌：下頜乳切萌出過(guò)遲、異位和萌牙震牙脫牙冠根冠根聯(lián)合磨耗：正常咀嚼過(guò)程中牙體硬組織緩慢喪失磨損：正常咀嚼運(yùn)動(dòng)之外，高強(qiáng)度、反復(fù)的機(jī)械摩擦造成的牙體硬組織的快速喪失。臨床癥狀：牙本質(zhì)敏感、食物嵌塞、牙髓根尖、TMD。長(zhǎng)期接觸酸或者酸酐造成牙體硬組織喪失的疾外源性酸/內(nèi)源性發(fā)生在牙齒唇、頰面頸部的慢性硬組織缺外因：刷牙不內(nèi)因：齦溝液酸蝕、牙合力疲發(fā)生在牙冠表面細(xì)小的、