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.
As permanent teeth develop within the jaws, resorption causes the roots of the deciduous teeth to be absorbed by the surrounding tissues. This process of exfoliation of primary teeth and eruption of permanent teeth is usually complete by 6 months of age. The time when the mouth contains both primary and permanent teeth in functional positions is called the period of mixed dentition.