30 May 2012

GUM SWELL!

Several reasons of gum swelling

There are a number of factors that can cause swollen gums:
1.    Gingivitis
2.    Drugs induced gums to get bigger
3.    Mouth breather
4.    Hormones
5.    Vitamin C deficiency
6.    Diseases

1.    Gingivitis
Gingivitis is due to the long-term effects of plaque deposits. Plaque and tartar irritate and inflame the gums. Bacteria and the toxins they produce cause the gums to become infected, swollen, and tender. Without proper brushing, gingivitis won’t go away. 
 
2.  Drugs induced gums become bigger 
There are several drugs that can cause your gums to get bigger which is called drug-induced gingival hyperplasia. It can cause your gums to look like they are squeezing out of the spaces between your teeth and growing over your teeth

There are a few categories of drug that can cause this:
·       Anticonvulsant : e.g. phenytoin, primidone, valproate
·       Calcium channel blockers: e.g. nifidepine, verapamil
·       Immunosuppresants: e.g. cyclospori


  

3.  Mouth breather 
You may irritating your gums if find yourself breathing through your mouth very often. It is presumed that since the air you breathe in is drying your gums, they compensate by enlarging the blood supply and getting puffier to ensure that they don’t dry out.

4.  Hormones 
Aldolescents that are going to puberty are extremely susceptible to gingivitis.
Pregnant women are very susceptible to gingivitis due to high levels of progesterone (increase the permeability of blood vessels in the gums) in their bodies.


  
5.  Vitamin C deficiency 
If you aren’t getting enough vitamin C in your diet, your gums can get really puffy and red.

6.  Diseases 
Ø Diabetes mellitus 
Ø Leukemia
Ø Cancer
Ø Sarcoidosis
Ø Wegener’s granulomatosis
 Ø Autoimmune disease 
 All can cause enlarged gums.






10 May 2012

人工植牙

目前市面上常见的人工植牙系统,均为骨整合植牙设计。所不同者在于植牙表面的处理,牙根形状及植体与上部构造连接方式不同。以几大人工植牙品牌为例。
  • 瑞典 Nobel Biocare
  • 瑞士Straumann                             
  • 德国 DentsplyAnkylos/Friadent
  • 美国 3i
  • 其他

瑞士 Straumann
术过 
予局部麻醉,翻牙周瓣膜露出植牙位置,以细钻针定位,再逐漸以大至手指甲1/3 1公分,即可將植置入,合瓣膜,手即算完成 待二六個月骨头与质组织密合,即可作假牙,手的成功率接近百分之百

 
人工与传统假牙的比
牙桥 

牙桥
牙桥易导致蛀牙与牙周疾病。牙桥在经年受力后,不可避免的会有黏着剂溶解,致使牙根蛀牙的情形。  

活动假牙

活动假牙
活动假牙咀嚼功能较不好,存有异物感,且易导致牙床的萎缩,产生松脱现象且须于饭后及睡前须取下清洁、浸泡,对患者在生活上造成极大的不便。




人工植牙支的牙或活假牙或全口假牙
单颗或多颗缺牙时皆可採行以植牙支撑的方式,在重建的過程中不会破坏其他完整的牙齿,且美观自然,可承受较大的咬合力量,一般植牙成功率,十年约90%,因此人工植牙已逐渐取代传统牙桥成为缺牙的优先选择 以植牙支撑活动与全口假牙可提供较稳定的功能并减缓骨质吸收。