Cephalometric evaluation of sagittal and vertical dimension changes after mini-screws assisted rapid palatal expansion: A case series study

Salih, Elzubair Osman; althalabi, abdallah mohammed; El zawahry, nada Omar; fahim, fady hussein

doi:10.21608/edj.2024.311178.3161

	Cephalometric evaluation of sagittal and vertical dimension changes after mini-screws assisted rapid palatal expansion: A case series study
Egyptian Dental Journal
Volume 71, Issue 1, January 2025, Page 27-33 PDF (1.05 MB)
Document Type: Original Article
DOI: 10.21608/edj.2024.311178.3161
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Authors
Elzubair Osman Salih ¹; abdallah mohammed althalabi ²; nada Omar El zawahry ³; fady hussein fahim ⁴
¹MSc Student, MSc Candidate, Orthodontic Department, Cairo University, Egypt
²MSc Student, Orthodontic Department, Cairo University
³Instructor, Orthodontic Department, Cairo University
⁴Professor, Orthodontic Department, Cairo University, Egypt
Abstract
Introduction Transverse maxillary deficiency (TMD) is characterized by a narrow palate, posterior crossbite, crowding, and reduced nasal cavity volume. In early adolescence, rapid palatal expansion is the preferred treatment, while in late adolescence and adulthood, mid-palatal sutures fuse, making expansion more difficult and potentially causing side effects. Mini-screw assisted rapid palatal expansion (MARPE) has recently introduced as an alternative to surgically assisted rapid palatal expansion (SARPE). TMD may be observed in both Class II and Class III malocclusions, and maxillary expansion may alter the anteroposterior relationship of the jaw. Study Objective The study aimed to evaluate changes in anteroposterior and vertical dimensions through cephalometric analysis after MARPE treatment. Methodology • Ethical approval was obtained from Cairo University's local research ethics committee. • Ten patients (4 males, 6 females) underwent treatment using four mini-screws hybrid hyrax appliances supported. • Pre- and post-expansion photographs and lateral cephalometric radiographs were taken. • Statistical methods included mean, standard deviation, median, and range. Results • ANB angle increased by 1.2 ± 0.2°, attributed to a increase in SNA angle (0.9 ± 0.3°) and a decrease in SNB angle (−0.3 ± 1.7°), though results were statistically insignificant. • The mandible showed a slight backward rotation, indicated by a decrease in SNB angle and an increase in mandibular plane angles. Conclusion MARPE treatment led to a statistically insignificant advancement of the maxilla and mild backward rotation of the mandible, resulting in a minor increase in ANB and reduced anterior facial height.
Keywords
Maxillary transverse deficiency; cephalometric; MARPE


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