崇愛牙醫診所(資料重建中,歡迎新舊朋友)

The upper teeth should fit outside the lower teeth like a lid on a box. If the upper jaw is too narrow, the lower jaw usually swings to one side to allow the back teeth to mesh. A posterior cross-bite results.(上顎通常會在下顎的外側面,像盒子的蓋子一樣,假如上顎是太過窄,則下顎通常會擺動到一側,好讓後牙段的牙齒囓合,這就形成後牙的錯咬)

Posterior cross-bites can result in uneven wear of the teeth and can place extra strain on the jaw joint resulting in tempero-mandibular joint problems.(後牙錯咬可以造成牙齒的不平均磨耗,也會產生過多的顎關節壓力,這也是TMJ問題的形成因素之一)

Orthodontic treatment involves the use of a fixed or removable appliance to widen the upper jaw (maxillary expansion).(矯正治療則是可以藉固定式或是活動式的裝置,來開擴上顎(上顎擴大)

Once the upper jaw has been widened, the lower jaw can close normally(一旦上顎被擴大後,下顎就可以正常的閉合)

後牙錯咬的產生因素很多,造成咬合上的干擾會因程度的不同而有差別,厲害的會對顳下顎關節產生障礙,可能形成關節頭(髁頭)的功能行使不良,最主要的中線也會產生偏斜(deviation),所以要儘早發現問題,儘早改正為宜,,,,,,,

雙側性後牙錯咬的情況，通常是伴隨有骨骼性的問題。雙側性後牙錯咬且合併有功能性咬合偏移時，那麼治療應該是愈早開始愈好。

後牙的錯咬可以使用的方法:

1)擴大器

2)quad helix(四眼簧)

3)ALF(advanced lightwire functionals)

4)骨釘(mini implant)

5)墊高咬合(bite turbo),橡皮筋舌扣黏著對拉牽引

6)OGS(口腔外科手術)

Principles of Cross-bites treatment (哥倫比亞大學經典的power points,必看)

early treatment (哥倫比亞大學經典的power points,必看)

THE IMPORTANCE OF CORRECTING POSTERIORCROSS-BITES IN THE DECIDUOUS OR MIXED DENTITION

posterior crossbite(後牙錯咬)

Tooth Abrasion in Unilateral Posterior Crossbite in the Deciduous Dentition

A Systematic Review Concerning Early Orthodontic Treatment of Unilateral Posterior Crossbite

 單側性後牙錯咬改正的病例圖片(posterior crossbite)

使用quad helix在單側後牙錯咬(Unilateral posterior crossbite)的早期矯正治療

ALF (Advanced Lightwire Functionals)Reduces Orthodontic Relapse Factor

The ABO discrepancy index: A measure ofcase complexity

a randomized controlled trial comparing the quadhelix and the expansion arch for the correction of crossbite

MAXILLARY EXPANSION WITH THE TANDEM- LOOP ARNDT MEMORY EXPANDER(必看經典文章)

surgically assisted rapid palatal expansion for correction of transverse maxillary constriction with bilateral posterior crossbite.

bilateral posterior crossbite的治療

Treatment Plan (fixed, removable or functionals)(值得看的空間問題處理)

treatment timing(治療的時機)

posterior crossbite的治療案例圖片

Interceptive orthodontics: The need for early diagnosis and treatment of posterior crossbites (裡面有posterior crossbite 的calssification)

smile gallery(微笑畫廊)underbite

Long-term Stability of Unilateral Posterior Crossbite Correction

Class III Malocclusion with Posterior Crossbite and Anterior Open Bite Treated with Extraction, Expansion and Habit Control: A Case Report and Review of the Literature.

Molars crossbite treatment complete in three months(青少年及成人 的 大臼齒錯咬之治療)