Monday, December 9, 2013

Ask.Dentist牙牙学医:What is root canal treatment? 什么是抽牙根(牙根管治疗)?

Has your dentist or endodontist told you that you need root canal treatment? If so, what do you understand about root canal treatment?

What is root canal treatment?

Root canal treatment also called Endodontic treatments and it is done when decay will likely damage or has already killed a tooth. (death tooth-refer to our previous article). 
Simply, a root canal is procedures of removal the infected pulp tissue and replacement of a tooth pulp ,  and this procedure may be performed by a general dentist or a specialist called an endodontist. More than one office visit usually is required.


What is pulp and root canal?

A root canal treatment generally involves the removal and replacement of a tooth’s pulp. The pulp is soft tissue containing blood vessels, nerves and connective tissue. The pulp is found in a canal that runs through the center of the hard tissue on the inside of the tooth (the dentin). The pulp extends from the pulp chamber in the crown down through the root canal to the tip of the root in the jawbone. A tooth has only one pulp chamber but may have more than one root and several root canals




Why do you need root canal treatment for your teeth?

If your tooth's pulp becomes damaged through injury or disease and cannot repair itself, bacteria and their products can leak into the pulp and cause the pulp to die. If a root canal procedure is not performed, an abscess can form at the tip of the root and cause considerable pain. Even if there is no pain, the bone anchoring the tooth in the jaw can be damaged. Without treatment, the tooth may have to be extracted if left untreated, abscess may getting serious and facial swelling may happen.

The GOAL of root canal treatment is to PRESERVE YOUR TOOTH! In the past, injured or diseased teeth frequently had to be removed. Today, they often can be saved through Root canal treatment. 


How is root canal treatment done? 

Here is what you can expect when you schedule a root canal treatment.

On the first visit:

Local anesthetic usually is given, to maintain patient comfort. The affected tooth is isolated from saliva with a rubberlike sheet called a dam. An opening is made through the crown of the tooth. The pulp is removed, and then the root is cleaned and shaped. During the shaping procedures, the dentist may need to take a small X-ray to confirm the length of each canals. After the shaping and cleaning, medication may be added to the pulp chamber and root canal(s) to help eliminate bacteria. A temporary filling is placed in the crown opening to keep saliva out. Antibiotics may be prescribed if an infection is present and has spread beyond the end of the root(s). 


                     
Rubber Dam Placement for isolation

                                 
Access opening make through he crown of the teeth


Instruments used to clean and shape the canal

Canal cleaning with disinfectant



X-ray taken to confirm the length



On the next visit:


The dentist will review the tooth again. If no symptoms of pain and discomfort, and there are signs of healing, the dentist will proceed to the next step. The temporary filling is removed. The root canal is filled and permanently sealed. Another X-ray will be taken to confirm the complete seal of the canals to prevent future reinfection. A metal or plastic rod or post may be placed in the root canal for structural support.

Next, you probably need your dentist to perform crown treatment (Cap) to strengthen the tooth from damage.  Crowns are made from a variety of materials, depending on the location of the tooth, the color of the tooth and the amount of natural tooth remaining. Discuss with your dentist which option is best for you.
                                              
The root canal is filled and sealed



                          


 Before and After Root canal treatment


                                                           
Crown/ Cap on tooth




How long the root canal treated tooth can last?

The restored tooth can remain healthy as long as its roots are nourished by the surrounding tissues. Good oral hygiene at home and regular dental visits can help prevent tooth decay and gum disease. If you take good care of it, the restored tooth could last a lifetime

Finally, Root canal treatment treatment helps you maintain your natural smile, continue eating the foods you love and limits the need for ongoing dental work. With proper care, most teeth that have had. 
                                           
Video of root canal treatment procedures









您的牙医是否告诉过你,你需要抽牙根呢?你懂什么是抽牙根吗?



什么是抽牙根?


抽牙根治疗也被称为根管治疗(root canal treatment / endodontic treatment)。 它通常因为蛀牙太深有可能损外牙髓(pulp),或已经造成牙齿死亡时,所需要的治疗 (请参考我们之前有关死牙death tooth 的文章) 。


简单地说,抽牙根或根管治疗是去除受感染的牙髓组织然后再进行牙根管充填,通常是由您的家庭牙医或牙根管治疗专科进行。疗程需要一次以上才能完成



牙髓及牙根管什么

根管治疗通常包括牙齿的牙髓的去除和充填。牙髓(pulp)里含有血管,神经组织的软组织。它贯穿在牙齿内部的硬组织(牙质)。牙髓通过牙根管向下延伸到牙根的末端。牙只有一个牙髓腔(pulp chamber),但可能有一个以上的牙根数和根管(root canals)。




为什么你的牙齿需要根管治疗?


如果你的牙齿的牙髓已经受疾病所损,不能自我修复,细菌及其产物会渗透到牙髓腔,这会造成牙髓死亡。如果不进行根管治疗,会在根部形成脓肿并引起相当大的疼痛。即使没有疼痛,发炎的情况也会延伸至牙根末端或进入支撑牙齿的骨中并造成损坏。如果不及时治疗,脓肿可能会越来越严重,可能会发生面部肿胀及生命危险。


根管治疗的目的是为了保持你的牙齿!在过去,受伤或患病的牙齿经常不得不被拔除。如今,他们往往可以通过根管治疗保存下来。


根管治疗是怎样进行的呢?

下面是当你安排一个根管治疗时,你应该知道的几个步骤。


在第一次疗程:

患者通常被给予局部麻醉剂,以减少疗程中的疼痛。所以抽牙根基本上应该是不痛的。然后你的牙医会在你的牙齿上装上一个橡皮障以不让牙齿接触到口水。接着,牙医在牙上钻个开口,这开口将直达牙髓腔的内部。在牙髓内部中寻找所有的牙根管 (这一个步骤较难,因为牙根管的所在以及数量因人而异)。找到并确定了牙根管的所在地及数量后,牙医将开始将牙根管内部的神经及血管抽出,重新将牙根管成形然后再将牙根管内部进行彻底的清洗。在成形过程中,牙科医生可能需要采取一个小的X光照,以确认每个根管的长度。在成形和清理后,药物会被添加到牙髓腔和根管,以进一步的帮助消除细菌。最后牙医将在开口补上一个暂时的补牙。如果你牙根部发炎的状况严重,你的牙医会给于你抗生素服食。


橡胶障安置在牙齿上




牙上的开口
                                                 
用于牙根管清理以及成形




牙根管清洗与消毒

X光照以确认根管的长度



接下来的疗程:

牙医会再次检查该牙齿。如果没有症状的疼痛和不适,并且有愈合的迹象,那么牙医将继续下一个步骤。除去牙开口上的暂时性补牙,然后进行最后的清理,再将根管充填及永久密封。这时,你的牙医可能会要你再拍一个X光照将以确认牙根管完全的密封,以防止未来的再感染。一个金属制或塑料杆或柱可能会放置在牙根管以做结构支撑。

接下来,你的牙科医生可能需要将你已经抽了牙根的牙装上牙冠(CROWN),以加强保护已损坏牙齿,让抽牙根后的牙齿更耐久。牙冠有各种不同的材料制成,取决于牙齿的位置,牙齿的颜色和剩余的天然牙齿的数量。与您的牙医讨论哪个选项是最适合你的。                                              


根管填充和密封
                         


根管治疗的之前和之后

                    

牙冠/牙护套

根管治疗的牙齿能维持多久?

只要其牙齿根部的周围组织保持健康那么抽牙根后的牙齿就不会有问题。在家良好的口腔卫生和定期接受牙齿检查可以帮助防止蛀牙和牙龈疾病。如果你把它照顾好,抽牙根后复原的牙齿会持续很久。

最后,抽牙根或根管治疗可以帮助你保持你的自然的微笑,继续吃你喜欢的食物。有了适当的照顾,您就不用担心没有牙齿了。

抽牙根影像 (英文)