Pavoni Chiara, Mucedero Manuela, Baccetti Tiziano, Franchi Lorenzo, Polimeni Antonella, Cozza Paola
Prog Orthod. 2009;10(1):20-8.
The aim of this study was to compare the effects of the Facial Mask in combination with a mandibular bite block (FM/BB) or with rapid maxillary expansion with a bonded device (RME/FM) in patients with Class III malocclusions.
The FM/BB sample included 22 subjects, 12 girls and 10 boys. The average age for the FM/BB group before treatment (T1) was 8.7 +/- 1.2 years, the mean age after active treatment (T2) was 10.4 +/- 1.3 years, and the mean duration of treatment was 1.7 +/- 0.8 years. The RME/FM sample comprised 17 subjects, 10 girls and 7 boys. The average ages were 7.8 +/- 1.8 years at T1 and 9.3 +/- 1.9 years at T2. The mean duration of observation was 1.5 +/- 0.6 years. Lateral cephalograms were analyzed at T1 and T2. The T2 to T1 changes in the 2 groups were compared with an independent sample t-test (p. <0.05).
The comparison between the 2 treatment protocols for Class III malocclusion showed that there were no significant differences for any measurements in either the sagittal of the vertical planes form T1 to T2.
Facial masks in combination with different typed of full-coverage occlusal splints resulted in very similar dentoskeletal outcomes regardless of presence or absence of RME. Both the Bite Block appliance and the splinted RME aided in limiting the posterior rotation of the mandible.
本研究的目的是比较面罩联合下颌咬块（FM/BB）或联合用粘结装置进行快速上颌扩弓（RME/FM）对III类错牙合患者的影响。
FM/BB样本包括22名受试者，12名女孩和10名男孩。FM/BB组治疗前（T1）的平均年龄为8.7±1.2岁，积极治疗后（T2）的平均年龄为10.4±1.3岁，平均治疗持续时间为1.7±0.8年。RME/FM样本包括17名受试者，10名女孩和7名男孩。T1时的平均年龄为7.8±1.8岁，T2时为9.3±1.9岁。平均观察持续时间为1.5±0.6年。在T1和T2时分析头颅侧位片。两组从T2到T1的变化采用独立样本t检验进行比较（p<0.05）。
对III类错牙合的两种治疗方案的比较表明，从T1到T2，垂直平面矢状面的任何测量值均无显著差异。
无论是否进行快速上颌扩弓，面罩联合不同类型的全覆盖咬合夹板均产生非常相似的牙颌面治疗效果。咬块矫治器和带夹板的快速上颌扩弓均有助于限制下颌的向后旋转。
