<prompt> Which of the following is true about Eruption of teeth ___Premolar appear in Primary dentitionIncisors appear first in secondary dentition3rd molar is last to developHypothyroidism delays dentition  <response>: Eruption times vary from child to child.The first teeth begin to break through the gums at about 6 months of age. Usually, the first two teeth to eruptare the two bottom central incisors the two bottom front teeth. Next, the top four front teeth emerge. Reference: GHAI Essential pediatrics, 8th edition 