Clinical and Patient Reported Outcomes Measures of Miniscrew-Assisted Rapid Palatal Expansion: Scoping Review

Transverse maxillary deficiency is a frequent orthodontic problem, affecting approximately 8–22% of individuals and often associated with posterior crossbite, facial asymmetry, and compromised nasal breathing. If left untreated, maxillary constriction may influence craniofacial growth, temporomandibular joint function, and the balance of the masticatory system. Conventional rapid palatal expansion using tooth-borne devices can correct these deficiencies but is often limited by dental tipping, root resorption, gingival recession, and discomfort, especially in older patients with partial suture fusion. Mini-implant assisted rapid palatal expansion (MARPE) has emerged as a less invasive and more stable alternative, enabling skeletal expansion in late adolescents and adults while minimizing dental side effects. Although several studies have documented its clinical and radiographic outcomes, patient-reported experiences—such as pain, discomfort, satisfaction, and quality of life—remain insufficiently explored. Therefore, this scoping review aims to map the available evidence on patient-reported outcomes after MARPE treatment, identifying key variables and knowledge gaps to better guide clinicians and support future patient-centered research.