Doing a 24-hour urine collection for proteinuria and creatinine clearance is unnecessary because a spot urine sample to measure urine albumin to creatinine ratio is quite sufficient for diagnosis and therapy. More importantly, exercise, dietary protein, and sustained upright posture tend to increase albumin excretion rates.
As an orthodontist i see many panoramic x-rays of children as young as 8 with the earliest signs of wisdom tooth formation. Teeth take a long time to develop and erupt. Your top front permanent tooth, for example, that came in when you were about 7, began to form before you were born.
The first teeth begin to break through the gums at about 6 months of age. They are usually the lower front teeth. The last teeth are the upper second molars which come at around age 25-33 months usually. The complete set of baby teeth is in the mouth by age 2 and a half to 3 years of age.