They say individuals may have cavities, root exposures or other flaws that could cause problems after toothbleaching.
牙医们说，那些有蛀牙、牙根外露或者有其他牙齿问题的人，可能在牙齿漂白后出现牙齿问题。
2
Objective:The objective of this study was to assess effects of enamel microabrasion during toothbleaching on enamel bonding properties.
目的：探讨釉质微打磨与漂白联合治疗对瓷-釉质粘接强度的影响。
3
Objective: To sum up and analysis the causes of failure about treating pulpless and discolored anterior teeth with the method of interior toothbleaching.