Analysis of the efficacy of conventional, skeletal and invisible orthodontic appliance for upper molar distalization in Class II Malocclusion patients: a systematic review and meta-analysis.

There was also no significant difference ( P =.61, I 2 =72%) between the three subgroups in mandibular plane angle changes, although the buccal subgroup (−0.22°; 95%CI, [−0.78, 0.34]; P =.03; I 2 =71%) showed a decreasing trend, the palatal (0.04°; 95%CI, [−0.31,0.39]; P =.0003; I 2 =73%) and the infrazygomatic (0.37°; 95%CI, [−0.84,1.57]; P =.009; I 2 =85%) subgroups showed an increasing trend.

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