作者:谭建国教授
前文我们谈到了能够简洁明了地进行前牙美学修复设计的前牙美学四要素, 包括上中切牙切缘的位置、上中切牙临床牙冠的宽长比、上中切牙龈缘的位置和上前牙的宽度比例。其中上中切牙切缘的位置的确定是关键中的关键,它的确定不仅仅和前牙美学有关系,还会对咬合产生重要的影响。因此我们称这个“Edge”为“On the Edge of Esthetics and Function”。
那么如何确定上中切牙切缘的位置呢?上中切牙切缘的位置至少要从切龈向和唇舌向两维去考虑确定。我们先从美学的角度考虑上中切牙切龈向的位置关系。上中切牙切龈向的位置主要根据休息位时上唇唇下上中切牙的暴露量确定,因为只有暴露的上中切牙才是影响美观的,而休息位时最有美学代表性的生理性位置。关于此研究很多,规律性的结论是:
1. 休息位时上中切牙唇下暴露量为2-4mm
2. 女性上中切牙的唇下暴露量大于男性
3. 随着年龄的增高,上中切牙的唇下暴露量减少。
上中切牙的唇下暴露量不仅仅与牙、牙槽骨和颌骨因素有关,很重要地还受上唇的影响,特别是上唇的长度。中青年上唇的长度男性为22-24mm,女性平均为20-22mm。女性比男性平均短2mm。随着年龄的增长,每过十年上唇长度平均增长1mm。因此,休息位时上中切牙的唇下暴露量与性别和年龄都密切相关。
从美学角度根据休息位时上中切牙唇下暴露量而确定的上中切牙切缘的位置还要和后牙合平面协调,前牙切平面必须和后牙合平面保持一致。因此,上中切牙切缘位置的确定是一个综合因素决定的。
上中切牙切缘唇舌向位置的确定要根据上中切牙解剖上的生理性唇倾度、上下前牙正常的覆合覆盖关系,以及前导的设计等多个影响因素。
总之,无论是从切龈向还是唇舌向,上中切牙切缘位置的改变,不仅影响前牙的美学,还会影响口腔的咬合和发音等功能运动。
更多牙齿美学修复内容 请关注Tsmile微信公众号:
https://www.gaiaonline.com/profiles/stopfrog2/43705398/
http://stopfrog0.soup.io/post/669239745/Have-Actually-Powerful-Paper-Producing-with-this
http://applemarble1.over-blog.com/2019/06/faq-s-with-personalized-composition-service.html
http://qa.ibobit.com/index.php?qa=user&qa_1=applebotany0
http://www.topicbd.com/index.php?qa=user&qa_1=stopbotany5
http://www.ridesharetalks.com/index.php?qa=user&qa_1=foldfrog9
https://waceilearn.com.au/members/stopfrog4/activity/37377/
https://blakeingram3278.page.tl/Term-Paper-Composing-Service.htm?forceVersion=desktop
https://marvelcomics.faith/wiki/Professional_Creating_regarding_Judge_Newspapers_along_with_Our_Support
https://yogaasanas.science/wiki/Expert_Publishing_of_Review_of_an_Composition
https://bookmarkzones.trade/story.php?title=the-reason-selecting-all-of-our-expert-essay-or-dissertation-composing-providers#discuss
https://8tracks.com/minebat8
http://applebat1.nextwapblog.com/ease-composition-writing-and-protecting-your-wallet.html
http://submitbookmark.xyz/story.php?title=exploration-papers-writing-assistance-around-australia#discuss
http://164.115.27.116/prd/forum_nongkhai/1495061-a-natural-approach-to-the-most-beneficial-cosmetic/0
http://answers.codelair.com/48361/a-more-rewarding-you-your-a-week-system-to-self-improvemant
http://ttlink.com/branden332/all
https://www.epc-standard.org/collaborate/User:EldenWaterman8
https://www.brooksnewmark.com/content/right-healthy-skin-care-software-suit-your-needs
https://www.globalfurnituremap.com/groups/12-ways-to-get-far-more-minerals-into-your-diet-plan/
http://wiki.masterhpc.es/index.php/Three_Key_Capabilities_Your_Diet_Should_Have_For_Weight_Loss_Success
https://hamconnect.com/groups/a-private-natural-skin-care-system-in-your-case/
http://www.protectoregonsprogress.org/content/drive-people-pedals-shed-pounds-and-find-accommodate
http://flocks.dunhakdis.com/groups/ideal-way-to-reduce-cholesterol-levels-by-natural-means/
http://www.ketopianacademy.com/groups/100-100-pure-healthy-skin-care-blank-are-you-still-in-search-of-it/
https://wiki.openlp.org/User:MinervaSchuler
https://kharkov.guru/blog/30/guidelines-on-how-to-reduced-cholesterol-levels-obviously/
https://www.forummuhasebe.com/index.php/23/guys-plus-depressive-disorders
http://databasepedigree.com/read_blog/4295/taking-note-of-the-outward-symptoms-of-getting-worse-heart-valve-diseases
https://elunivercity.net/wiki-start-up/index.php/Starters_Guide_To_Healthful_Vitamin_Over_Eating
https://syscoder.org/doku.php?id=profile_soniahass6
http://autopost.net.pl/index.php/gerikopp93/all
https://kharkov.guru/blog/32/rem-sleep-and-then-daydreaming/
http://medicinjour.se/index.php?title=Constantly_Consult_With_Medical_Help_Before_Viagra
http://ask.leadr.msu.edu//4660/therapies-regarding-index-finger-length-treatment-options
https://syscoder.org/doku.php?id=skinca_e_meant_fo_mix_type_of_skin
http://answers.codelair.com/48368/whats-so-great-about-stimulation
http://mail.advancedrace.com/287795/numerous-possibilities-around-prostate-cancer-treatments
https://oathauth.wmf.hallowelt.biz/wiki/If_They_Deep_Sleep_Conduct_For_All
https://dmowiki.com/User:LeonelLeHunte35
http://peacetech.wiki/index.php?title=User:MitchT88700754
http://www.killerknuts.com/groups/seeing-the-signs-and-symptoms-with-deteriorating-core-valve-condition/
http://diamondsinthemaking.com/content/cialis-intake-suggestions
https://tethys.pnnl.gov/users/ricky-cabena
https://wikihu.com/wiki/User:BryantBrunker
http://social.freepopulation.com/profile/GladysTard
http://www.bmur.no/UserProfile/tabid/43/UserID/79767/Default.aspx
http://www.epic7wiki.com/doku.php?id=profile_ezrakenneally9
http://www.contentmatters.com/mediawiki/index.php/User:CelestaLanham33
https://128.227.67.21/Cialis_*_Pertaining_To_Long-lasting_Adventure
https://woodrestorationmag.com/profile/JulietaCul
https://www.shootingparty.uk/information-for-cialis-usefulness-for-the-purpose-of-impotence/
https://openbroadcaster.com/content/cialis-against-different-education-medicines
http://sites.leonbarton.net/Impotence_Problems_And_Then_Cialis
http://www.w4gso.org/members/simamahaffey62/profile/
http://medicinjour.se/index.php?title=All_Of_The_Made_Way_For_Measure_For_Cialis
https://ctmediationcenter.com/first-timers-help-guide-healthful-nutritious-enjoying
https://www.yescondo.com/en/pure-skin-care-designed-for-mix-type-of-skin/
https://websuper.net/qa/333/there-are-great-deal-more-order-healthy-life-versus-workouts
http://phpfoxdev.rodzing.com/blog/223731/top-notch-food-products-together-with-changes-in-lifestyle-enhance-heart-an/
https://www.askonline.org/index.php?qa=55642&qa_1=prostate-health-certain-antigen
http://answers.codelair.com/49193/avocados-with-regard-to-spirit-overall-health
http://myhotrodlife.com/groups/take-extra-care-when-choosing-viagra-online/
http://www.aglimpseofevil.com/comprar_cialis_seguro9708
https://terrawiki.es/w/Prior_To_Taking_Cialis._Make_An_Online_Purchase._Basically_No_Treatment_Plan.
https://bikekh.com/groups/prostate-type-of-cancer-screening-info/
http://okerbay.com/great-benefits-rub
https://www.triansh.com/blog/52494/first-timers-help-guide-to-healthier-vitamin-feeding-on/
http://www.account-expert.com/en/%D1%84%D0%BE%D1%80%D1%83%D0%BC/organic-sleep-problems-fix-in-addition-to-programs
http://www.mutionline.com/User-Profile/userId/37839.aspx
http://www.alpemar.com.ar/node/939
https://a2asafari.com/groups-2/new-ideas-into-bedding-never-before-revealed/
http://www.capture.se/Support/Profile/userId/70863
https://www.yescondo.com/en/this-article-will-make-your-bedding-amazing-read-or-miss-out/
http://phpfoxdev.rodzing.com/blog/37137/5-things-to-do-immediately-about-bedding/
https://osefun.com/content/single-best-strategy-use-bedding-revealed
https://ledermart.com/groups/should-fixing-bedding-take-4-steps/
http://condolencias.servisa.es/secret-weapon-bedding
https://exclusiveoffers.review/groups/3-steps-to-bedding-of-your-dreams/
https://topyolo.com/blog/1087/the-meaning-of-bedding/
http://adasia.vietnammarcom.edu.vn/UserProfile/tabid/761/userId/1700275/Default.aspx
http://help2job.com/content-whats-really-happening-bedding
https://payotten.be/?q=forum/bedding-game
https://2019conf.mobiusconsortium.org/node/417
http://www.alpemar.com.ar/node/937
http://www.capture.se/Support/Profile/userId/70861
http://www.w4gso.org/members/virgien3792309/profile/
http://uberciler.com/forum/entry.php?5401-Preventing-the-specter-of-Apnea-Seeking-a-Anti-snoring-Indication
https://www.voltimum.com.co/foros/snoring-loudly-solution-for-very-good-nights
http://webgolddirectory.com/listing/top-eight-ways-to-buy-a-used-httpsbuyonlinemodafinilcombrain-steroids-206
https://uclearning.org/groups/the-type-of-get-to-sleep-buy-are-there/
http://autopost.net.pl/index.php/williamwax/all
https://woodrestorationmag.com/profile/ManualNkb1
http://pakforum.net/member.php?u=12286-AnkeGerken
http://www.oriordan.biz/groups/theres-a-good-chance-you-can-pin-the-consequence-on-their-particular-weakness-with-teen-sleep-problem/
http://hongoccan.net/dienan4/entry.php?3369-What-Are-The-Indications-of-Stop-snoring
http://www.wwrp.online/AnkeManuel
http://live-verizon-ventures.devportal.apigee.io/content/snoring-loudly-addition-obstructive-sleep-apnea-enable
https://wiki.screepspl.us/index.php/Finest_Activities_While_In_Split_Time
http://rarefiedtennis.com/rt/wiki/index.php/How_To_Lower_Fall_Any_Time_Enjoying_Games
https://www.raidcontrol.com/index.php?title=User:FelishaDaves60
https://healthathome.com.mx/plataforma/profile/NadineMont
https://stomping-groundz.com/wiki/index.php?title=Very_Best_Games_Throughout_Separate_Occasion
https://advancedcarpfishing.com/groups/electronic-digital-games-and-youngsters-space-a-new-point-of-view/
https://wiki.haxogreen.lu/2016/wiki/User:BookerUpchurch
http://ttlink.com/weldonragg
http://siliconvalleytalk.xyz/blogs/viewstory/19482
https://websuper.net/qa/335/what-is-a-video-game
https://www.voltimum.com.co/foros/5-most-beneficial-sprained-however-fun-video
http://phpfoxdev.rodzing.com/blog/243512/what-exactly-is-a-sport/
https://terrawiki.es/w/Usuario:JohannaJevons6
http://mail.advancedrace.com/286818/5-most-beneficial-sprained-still-enjoyment-games-ever
http://fantastikwiki.com/index.php?title=Skin_Treatment_With_Regard_To_Mixture_Type_Of_Skin
https://dramawide.com/profile/UrsulaSaiz
http://rarefiedtennis.com/rt/wiki/index.php/User:ChadCervantes
http://theprimehealer.org/wiki/index.php?title=Wine_Beverage_And_Even_Staying_On_Your_Diet_Blank_All-natural_Health_Ideas
http://wiki.mdwcloud.com/wiki/index.php?title=Usuario:MartaRettig
http://phpfox-env.kmpp7fqets.us-east-2.elasticbeanstalk.com/blog/52/a-new-reputation-of-the-blue-pill/
https://www.uuranus.com/blogs/entry/Several-Ways-To-take-into-consideration-When
https://dmowiki.com/User:LeonelLeHunte35
https://todayask.com/954/spotting-the-symptoms-in-failing-soul-valve-condition
http://sharewiki.org/en/User:YvonneAiston285
http://peacetech.wiki/index.php?title=User:MitchT88700754
http://wiki.mdwcloud.com/wiki/index.php?title=Your_Five_Different_Ways_To_Enhance_Your_Eating_Habits
https://docs.einsteintoolkit.org/et-docs/User:AlmaTurner02823
http://www.brigfield.org/members/abbiehunley33/profile/
http://mais.fuxico.cf/index.php/blog/1637/your-five-ways-of-raise-your-nutrients/
http://autopost.net.pl/index.php/linnea20n
https://www.letsaskme.com/4136/multitude-possibilities-throughout-prostate-treatment-methods
http://www.agehealer.com/members/lenardingle91/profile/
http://agapedentistry.com/UserProfile/tabid/57/userId/3069911/Default.aspx
https://212.83.140.7/social/index.php/sonia96l63/all
https://intranet.gould.co.uk/mudrutwiki/index.php/Wine_Beverages_And_Additionally_Weight_Reduction_:_Pure_Health_Concepts
http://164.115.27.116/prd/forum_nongkhai/1671740-exist-choices-to-making-use-of-viagra/0
http://lesko.com/q2a/index.php?qa=61439&qa_1=significantly-successfully-lifestyle-physical-activity
https://websuper.net/qa/333/there-are-great-deal-more-order-healthy-life-versus-workouts
https://www.pagerfriend.com/blog/199/are-you-experiencing-advanced-prostate-kind-of-cancer-indications/
https://www.hmong.co/index.php/blog/47/top-five-changes-in-lifestyle-to-enhance-your-wellbeing/
https://www.gamersdecide.com/pc-game-forums/suckiest-pc-games/any-status-blue-pill
http://www.civitania.com/AlbaBoyes1