Whether the Fränkel function regulator (FR-3) stimulates forward growth of the maxilla has been a controversial subject. The early treatment of Class III malocclusion with the FR-3 was discussed in a systematic review and meta-analysis in the August 2014 issue (Yang X, Li C, Bai D, Su N, Chen T, Xu Y, et al. Treatment effectiveness of Fränkel function regulator on the Class III malocclusion: a systematic review and meta-analysis. Am J Orthod Dentofacial Orthop 2014;146:143-54). The major finding of the study regarded whether the FR-3 stimulates forward maxillary growth. In the “Results” on page 145, the authors stated, “The meta-analysis showed that SNA changes did not differ between the 2 groups in the short term…and long term.” There is a similar statement in the Abstract. However, in the Discussion (p. 149), the authors stated, “The meta-analysis results demonstrated that SNA changes have a statistical difference in the short term between the FR-3 group and the untreated group but did not differ in the long term.” Clarification from the authors is requested. Does the FR-3 affect maxillary growth in the short term or not?
Does the Fränkel function regulator III affect maxillary growth over the short term?
WordPress theme by UFO themes