Department of Orthodontics, Texas A&M University School of Dentistry, Dallas, Texas.
Division of Orthodontics, University of Florida Health, Gainesville, Florida.
J World Fed Orthod. 2024 Jun;13(3):105-112. doi: 10.1016/j.ejwf.2024.03.002. Epub 2024 May 1.
Posterior Crossbite is a common condition resulting because of transverse maxillary deficiency. The growth of the craniofacial complex finishes first in the transverse dimension, followed by sagittal and vertical dimensions. Conventional rapid palatal expansion (RPE) appliances are commonly used to correct transverse maxillary deficiency. Although RPE is efficient in correcting posterior crossbite, it results in dental side effects such as buccal tipping of maxillary molars, root resorption, bone dehiscence, and relapse. Mini-implant-assisted RPE has been introduced to increase the skeletal effects of expansion especially in patients with increased maturation and greater interdigitation of midpalatal suture. This article will review the biomechanics of RPE and mini-implant-assisted RPE. Additionally, the different designs of MARPE and the long-term clinical effects of expansion appliances will also be discussed in detail.
后牙反合是一种常见的病症，主要是由于上颌横向发育不足引起的。颅面复合体的生长首先完成横向维度，然后是矢状和垂直维度。传统的快速腭扩张（RPE）装置通常用于纠正上颌横向发育不足。虽然 RPE 对纠正后牙反合非常有效，但它会导致牙齿副作用，如上颌磨牙颊倾、牙根吸收、骨开裂和复发。微型种植体辅助 RPE 的引入增加了扩张的骨骼效应，特别是在成熟度增加和中缝间融合增加的患者中。本文将回顾 RPE 和微型种植体辅助 RPE 的生物力学。此外，还将详细讨论 MARPE 的不同设计和扩张装置的长期临床效果。
