Hi...., I went through your query....
For gaps between teeths braces can be applied and it gives good result.... But braces should be worn for at least a year....
For yellow discoloration of teeth he needs to brush properly....He should Brush using a fluoride-containing toothpaste at least twice a day, especially after meals....
Floss at least once a day. Proper flossing removes food particles and plaque from between the teeth,....and avoids discoloration of the teeth....
Answered2016-05-14 12:02:17
Let others know if this answer was helpful