dental dental known fixture surgical component bone jaw skull support dental crown bridge facial act anchor basis modern dental process called materials form intimate bond bone fixture placed likely dental prosthetic added variable healing time required dental prosthetic tooth bridge attached placed hold dental prosthetic success failure depends health person receiving drugs affect chances health tissues mouth stress fixture normal function evaluated planning position number key long term health prosthetic forces created significant position determined position angle adjacent teeth lab surgical guides called long term success dental healthy bone tooth extraction pre prosthetic procedures lifts required recreate ideal bone final prosthetic fixed person remove teeth mouth remove prosthetic case attached fixture prosthetic fixed crown bridge fixed screws dental cement prosthetic corresponding placed prosthetic pieces secured risks complications related therapy divided occur surgery excessive bleeding nerve injury occur months infection failure occur long term mechanical failures presence healthy tissues integrated appropriate loads year plus survival rates percent year prosthetic teeth medical uses primary use dental support dental modern dental use process bone tightly surface specific materials integration bone support physical loads decades failure individual tooth replacement secured screw crown dental connected dental cement small screw fused piece dental way retain multiple tooth dental form fixed bridge supported bridge fixed group teeth secured dental prosthetic removed user bridges typically connect connect teeth anchor points typically number teeth anchor points teeth directly referred referred supported bridges attach way single tooth replacement fixed bridge replace teeth known fixed partial extend replace entire arch teeth known fixed cases said fixed removed supported supported type dental permanently fixed place dental disconnected finger pressure enable shaped small connector button ball bar connected analogous underside dental facial correct facial cancer treatment injuries connections placed facial bones depending situation retain fixed prosthetic replaces face small diameter dental referred assist tooth movement creating anchor points forces generated teeth force applied direction desired movement force cells cause bone removing bone direction travel tooth adding space created order generate force tooth anchor point needed bone stimulated tension applied ideal anchor points typically designed movement small fully allowing easy removal following treatment technique planning general considerations planning dental focuses general health condition patient local health condition membranes jaws shape size position bones jaws adjacent opposing teeth health conditions absolutely placing certain conditions increase risk failure poor oral heavy greater risk variant disease affects called increasing chance long term failures long term use diseases affect bones increase risk early failure drugs use bone building drugs like anti drugs require special consideration associated disorder called associated jaw drugs change bone turnover thought people risk death bone having minor oral surgery routine example treat routine effects drugs months years risk appears low uncertainty exists dental community best manage risk placing position paper discussed risk low dose oral therapy slow release percent procedure jaws extraction etc risk higher therapy procedures lower jaw people medical issues potent people taken drug years position paper recommends placing people taking high dose high frequency therapy cancer care generally placed use appear affect survival considerations long term success determined forces support sensation pressure biting forces created higher offset location distribute forces evenly support concentrated forces result fracture components loss bone adjacent ultimate location based bone type vital structures health mechanical factors placed thicker stronger bone like found jaw lower failure rates placed lower density bone upper jaw people grind teeth increase force increase likelihood failures design account lifetime real world use person mouth dental industry created series tests determine long term mechanical reliability person mouth struck repeatedly increasing forces similar magnitude biting fails plan needed clinical judgment guide called prior surgery guides optimal positioning increasingly opt scan jaws existing plan surgery software following planning case scan use scanning complex cases helps surgeon identify avoid vital structures inferior nerve main surgical procedures placing systems basic steps placement soft tissue reflection crest bone splitting thicker attached roughly half final thick band tissue edges tissue referred pushed expose bone surgery alternate technique small punch tissue diameter removed placement raising flaps drilling high speed reflecting soft tissue surgical guide necessary pilot holes placed precision drills highly regulated speed prevent burning pressure bone drilling low speed pilot hole expanded progressively wider drills typically seven successive drilling steps depending width length care taken damage bone cells cooling water spray keeps temperature low placement screw placed self tapping prepared site tapped analog place controlled precise surrounding bone bone die condition called lead failure fully integrate bond tissue adaptation adapted entire provide thick band healthy tissue healing contrast buried sealed cover screw tissue closed completely cover second procedure required uncover later date timing extraction teeth different approaches placement dental tooth extraction approaches immediate post extraction placement delayed immediate post extraction placement weeks months extraction late months tooth extraction options attach teeth dental classified immediate loading procedure early loading week weeks delayed loading months healing time permanently stable body grow bone surface based process thought loading period result movement prevent increase failure rates result months integrating time depending factors allowed placing teeth restoring later research suggests initial stability bone important success integration certain period healing time result time allowed heal typically based density bone placed number uniform time withstand high meaningful differences long term survival bone loss loaded immediately months months single solid bone require period load minimize risk initial failure versus stage surgery placed internal components covered healing cover screw healing passes surrounding adapted cover screw flush surface dental designed completely covered integration period second surgery required reflect place healing early stages development systems stage approach believing improved odds initial survival subsequent research suggests difference survival existed stage stage choice bury stage surgery concern soft tissue management tissue mutilated loss teeth placed allowed moved healing stage technique need additional surgery compromise circulation tissue repeated choice stages centers best reconstruct soft tissues lost teeth immediate placement increasingly common strategy preserve bone reduce treatment times includes placement dental recent extraction site hand treatment time improve soft tissue envelope preserved hand slightly higher rate initial failure conclusions topic difficult draw studies compared immediate delayed scientifically rigorous manner additional surgical procedures needs surrounded healthy quantity bone order survive long term needs thick healthy soft tissue envelope common bone soft tissue surgeon needs reconstruct placement hard tissue bone reconstruction bone necessary lack bone new types short techniques allow compromise general treatment goal minimum bone height width alternatively bone defects graded bone likelihood related grade bone achieve adequate width height bone bone techniques developed frequently called guided bone defect filled natural harvested bone donor bone synthetic bone substitute covered semi membrane allowed heal healing phase natural bone replaces forming new bony base common procedures lift lateral increase width site vertical increase height site invasive procedures exist larger bone defects including inferior nerve allow placement fixture bone crest large source bone bone blood supply bone source bone local blood supply final decision bone technique best based assessment degree vertical horizontal bone loss exists classified mild loss moderate loss severe greater loss soft tissue reconstruction surrounding tooth band bright pink strong attached darker larger area replacing tooth band strong attached needed healthy long term especially important blood supply surrounding theoretically susceptible injury longer attachment tooth longer width adequate band attached tissue absent recreated soft tissue methods soft tissue roll tissue adjacent referred roll moved lip deeper tissue larger piece tissue needed finger tissue based blood vessel called tissue area additionally look band needed fill space common soft tissue called black triangle small triangular piece tissue teeth leaves triangular void adjacent teeth expect height underlying bone black triangle expected distance teeth touch bone greater recovery prosthetic phase begins integrated reasonable assurance integrate place bring event early loading months practitioners place temporary teeth confirmed prosthetic phase restoring requires equal technical expertise surgical considerations especially multiple teeth restored work restore vertical dimension smile structural integrity teeth evenly distribute forces prosthetic procedures single teeth bridges fixed selected depending application single crown fixed partial scenarios custom impression adjacent teeth dental lab simultaneously crown seated screw passes secure internal thread screw variations body piece stock custom hand cast metal piece custom metal similar success rates platform flat conical fit conical fit collar sits inside allows stronger junction better seal bacteria body improve seal collar narrowed collar referred platform switching combination conical fits platform switching gives marginally better long term conditions compared flat regardless material technique impression taken crown secured dental cement variation crown model crown piece screw traverses secure piece structure internal thread appear benefit terms success cement versus screw retained believed easier maintain change prosthetic offers high performance prosthetic procedures worn hold place custom shelf stock custom fixtures placed impression taken dental lab creates custom metal bar hold place significant retention created multiple use semi precision small diameter pin pushes bar allows little movement remains angled way distribute forces able safely hold fixed place comparable costs number procedures giving fixed solution alternatively stock retain male attached female common types ball style button style types stock allow movement retention improve quality life compared conventional regardless type female portion housed require periodic replacement number type affect patient satisfaction prosthetic alternatives maintenance placement need cleaned similar natural teeth instrument remove plaque blood supply care taken dental lose bone rate similar natural teeth mouth suffers disease affected similar disorder crowns expected fracture require repair approximately years significant variation service life dental crowns based position mouth forces applied opposing teeth restoration material retain complete depending type attachment connections need changed years powered useful cleaning risks complications surgery placement dental surgical procedure carries normal risks surgery including infection excessive bleeding tissue nearby structures inferior nerve blood vessels injured created placed lining long term rare inability place bone provide stability referred primary stability increases risk failure months primary stability primary stability refers stability dental immediately value derived mechanical assessment screw patient bone tissue sufficient initial stability allow immediate loading prosthetic reconstruction relevance primary stability decreases gradually bone tissue weeks surgery leading secondary stability secondary stability different initial results ongoing process bone healing process complete initial mechanical stability biological stability primary stability critical success bone mechanical biological support usually occurs weeks insufficient primary stability high initial mobility cause failure immediate post operative risks infection pre reduce risk failure percent affect risk infection excessive bleeding breakdown percent failure integrate tested weeks determine integrated significant variation criteria determine success commonly cited criteria level absence pain mobility infection bleeding bone loss greater dental success related operator skill quality quantity bone available site patient oral important factor primary stability significant variation rate fail integrate individual risk factors approximate values percent integration failure rare particularly oral surgeon instructions followed closely patient immediate loading higher rate failure potentially loaded immediately trauma extraction difference proper care maintenance statistical type procedure failure occurs patient receive engages behavior proper dental including smoking drug use long term long term complications result restoring teeth relate directly risk factors patient technology risks associated including high smile line poor quality missing difficulty matching form natural teeth unequal points contact uncommon shapes bone missing shaped unsuitable manner unrealistic expectations patient poor oral risks related factors geometry support teeth way natural teeth extensions fewer roots teeth longer support poor crown root ratio similarly grinding teeth lack bone low diameter increase risk finally technological risks fail fracture loss retention teeth intended support theoretical risks derive real world complications long term failures loss bone tooth mechanical failure dental fail like natural teeth large scale long term studies scarce systematic reviews estimate long term years survival dental percent depending clinical use initial development retained teeth crowns attached teeth screws recent allowed placement crowns dental cement akin placing crown tooth created potential cement escapes crown caught create picture occur appear additional cement retained crowns compared screw retained crowns overall compound stage actual superstructure gaps penetrate oral cavity later return adjacent tissue cause interior spaces sealed criteria success supported dental prosthetic varies study study broadly classified failures soft tissues prosthetic components lack satisfaction patient commonly cited criteria success function years absence pain mobility bone loss greater lack bleeding soft tissues occurrence technical complications prosthetic maintenance adequate function prosthetic addition patient free pain able taste pleased rates complications vary use prosthetic type listed single crown year survival percent crown fracture metal percent percent cumulative rate fracture percent percent percent fracture percent screw percent screw fracture percent fixed complete progressive vertical bone loss function percent failure year percent years percent years fracture year percent year percent percent confidence interval percent year percent percent confidence interval percent year framework fracture percent percent confidence interval percent year percent percent confidence interval percent prosthetic screw percent years percent years common fracture wear tooth structure especially years fixed dental metal having significantly higher year survival compared gold retention percent needing having clip fracture percent history evidence humans attempted replace missing teeth root form thousands years remains ancient china dating years ago carved bamboo tapped bone replace lost teeth year old remains ancient egypt similarly shaped precious metals egyptian found human teeth instances teeth ivory wife site honduras dating found lower young woman missing replaced pieces shell shaped resemble teeth bone growth formation indicates functional fragment currently collection museum harvard_university early 20th century saw number variety materials earliest successful system known basket attached gold crown showed evidence lasted number years use material observed close bone grew screws difficulty researchers describe later called marketed later rods rabbits positive results led believe represented ideal metal surgery 1950s research conducted blood flow living organisms workers devised method constructing chamber embedded soft tissue ears rabbits swedish surgeon interested studying bone healing regeneration research time adopted cambridge designed rabbit ear chamber use rabbit following study attempted retrieve expensive chambers rabbits found unable remove observed bone grown close proximity effectively adhered metal carried studies phenomenon animal human subjects confirmed unique property 1950s insert metal bones jaw artificial teeth attached pieces metal placed dental human volunteer began working mouth accessible continued observations high rate missing teeth general population offered subjects widespread study termed observed adherence bone evolved basic types root form common type indicated uses root form type roughly variants different shapes surface textures limited evidence showing relatively smooth surfaces prone surfaces evidence showing particular type dental superior long term success long anchor cheek bone passing retain complete upper bone absent offer novel approach severe bone loss upper jaw shown offer advantage bone offer invasive option depending size reconstruction required small diameter low diameter piece construction retention anchorage typical consists screw resembling tooth root smooth surface majority dental commercially pure available grades depending carbon nitrogen oxygen iron contained cold work hardened maximum limits percent percent commonly grade signifying containing percent aluminium percent slightly harder industry screws modern dental surface media blasting increase surface area potential content form surface layer metals preventing contacting bone
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