Okay, let's tackle this question about the number of permanent teeth in an 8-year-old child. Hmm, I remember that children start losing their baby teeth around this age and the permanent ones start coming in. But wait, how many exactly?

First, I need to recall the eruption timeline. Primary teeth are all present by age 3, and then they start to be replaced. The first permanent molars usually come in around 6 years old, which is why they're sometimes called "six-year molars." So at 8 years old, the child would have some permanent teeth replacing the primary ones. Let me think: the primary teeth are 20 in total, right? Then the permanent teeth start to erupt. The first to go are the lower central incisors, maybe around 6-7 years. Then the upper central incisors, then lateral incisors, first molars, canines, and second molars.

So by age 8, the first molars are already erupted, maybe the incisors. Let me count. The first permanent molars are 4 (upper and lower, left and right). Then maybe the incisors. If the central incisors have come in, that's 4, and maybe the lateral incisors are coming in. But wait, the lateral incisors come in later, maybe around 8-9 years. So at 8 years old, perhaps the child has the first molars (4) and maybe the central incisors (4). So total of 8? But wait, maybe the canines haven't come in yet. Also, the second molars come around 12. So by 8, the only permanent teeth present would be the first molars and maybe some incisors. Wait, but some sources say that by age 8, the number of permanent teeth could be 8 (first molars) plus maybe the central incisors. Let me check the standard eruption chart.

Standard eruption: First permanent molars erupt at 6, central incisors at 7-8, lateral incisors at 8-9. So at 8 years old, the first molars are already there (4), and the central incisors might be erupting. So that's another 4. So total of 8 permanent teeth. Then the answer would be 8. But wait, some sources might count the first molars only. Let me make sure. The question is about the number of permanent teeth in an 8-year-old. So if the central incisors have started to erupt, that's 4, plus the 4 first molars, totaling 8. So the correct answer is 8. The options weren't given, but the correct answer is probably 8. So the answer is C if that's one of the options. But the user didn't list the options, so I need to make sure based on standard knowledge. The core concept here is the eruption timeline of permanent teeth. The key point is that first molars come first, followed by incisors. So the correct answer is 8.

**Core Concept**
Permanent teeth begin erupting around age 6, starting with the first molars. By age 8, primary teeth are gradually replaced, but full permanent dentition (32 teeth) is not complete until adolescence.

**Why the Correct Answer is Right**
At age

✓ Correct Answer: C. 12