In all these inferential statistical tests, p < 0.05 was considered significant, and p < 0.01 was considered highly significant.
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The sentences
The 26 children with OI type I reached a dental development of 77.59 (± 15.02), and the 8 children with OI types III–IV reached a dental development of 73.5 (± 21.58), indicating a delay of 4.09 points in dental development in children with OI types III–IV compared with the OI type I group, but the difference did not reach statistical significance.