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Table 1 Comparison of the PTV of 45° and 90° miniscrews over time

From: Effect of miniscrew insertion angle in the maxillary buccal plate on its clinical survival: a randomized clinical trial

Time 90° 45° 95% confidence interval P-value
Mean SD Mean SD
Lower Upper
At 1 month 4.07a 7.76 3.72a 9.19 −4.28 4.71 0.923
At 2 months 4.64a 7.94 4.64a 9.76 −4.82 4.42 0.929
At 3 months 5.66a 6.96 4.04a 7.85 −2.63 5.56 0.466
At 4 months 5.20a 6.25 4.07a 5.89 −1.29 2.90 0.432
At 5 months 4.71a 6.83 3.68a 5.66 −2.67 4.13 0.656
At 6 months 2.95a 5.06 6.01a 5.13 −8.12 1.40 0.150
P-value 0.104 0.160    
  1. Paired t-test
  2. Repeated measures ANOVA followed by LSD test
  3. Means with the same superscript letters are not significantly different (P > 0.05)