不用太担心,看看这个剂量表:

Effective Doses from Various Dental X-Ray Procedures

Procedure	Effective Dose
	microsieverts	mrem
Panoramic	6-11	0.6-1.1
Cephalometric	6-11	1.7
TMJ tomogram	2	0.2
Full-mouth intraoral	10-15	1-1.5
Bitewings (4 x rays)	2-3	0.2-0.3
Mandible CT	150-700	15-70
PA and lat. chest x-ray (for comparison)	170	17
Background radiation (for comparison)	3,600/y	360/y

源自: http://hps.org/publicinformation/ate/faqs/dentalpatientissuesq&a.html

好好读一下上面的链接,有许多Q&A(问题解答).

 

 

所有跟帖： 

• 谢谢回帖！ＨＰＳ．ｏｒｇ是有很多有用的ｉｎｆｏ， -GoldenSunshine- ♀ (71 bytes) () 03/05/2012 postreply 14:53:23

• 读了ｈｐｓ．ｏｒｇ，我更加担心了 -GoldenSunshine- ♀ (325 bytes) () 03/05/2012 postreply 20:34:33

• ask for digital x ray or high-speed film. -闽姑- ♀ (0 bytes) () 03/06/2012 postreply 09:41:12

• 上次看牙医，照了两次照不出来，是不是要换牙医？ -ccwxh2- ♀ (65 bytes) () 03/06/2012 postreply 08:41:02

• 换吧. -闽姑- ♀ (0 bytes) () 03/06/2012 postreply 09:55:19