Step 4. Consider the two options, in-office and at-home treatments, for bleaching your teeth. A dentist performs in-office treatments by coating the teeth with a bleaching agent, then using periodic flashes of light to activate the solution. Treatments last 30 to 60 minutes, and the complete procedure often requires several appointments. In at-home treatments, patients wear a mouth guard fitted with bleaching gel 2 hours a day for two weeks, depending on the severity of staining.

Step4. 如果要漂白牙齒，考慮一下這兩種選擇：診所治療和家庭治療。所謂診所治療就是牙醫用漂白劑給牙齒涂層，并周期性地用閃光燈來啟動解決方案。這種治療會持續30到60分鐘，完成一整套的程序一般需要多次預約。而采用家庭治療，患者只需連續兩個星期每天戴上涂有漂白凝膠的護齒兩個小時就可以了。具體治療時間取決于牙齒被染色的嚴重程度。