Cone-beam computed tomography evaluation of dental, skeletal, and alveolar bone changes associated with bonded rapid maxillary expansion

Abstract

Aims and Objectives: To evaluate skeletal changes in maxilla and its surrounding structures, changes in the maxillary dentition and maxillary alveolar bone changes produced by bonded rapid maxillary expansion (RME) using cone-beam computed tomography (CBCT). Materials and Methods: The sample consisted of 10 patients (6 males and 4 females) with age range 12 to 15 years treated with bonded RME. CBCT scans were performed at T1 (pretreatment) and at T2 (immediately after expansion) to evaluate the dental, skeletal, and alveolar bone changes. Results: RME treatment increased the overall skeletal parameters such as interorbital, zygomatic, nasal, and maxillary widths. Significant increases in buccal maxillary width was observed at first premolar, second premolar, and first molar level. There was a significant increase in arch width both on the palatal side and on the buccal side. Significant tipping of right and left maxillary first molars was seen. There were significant reductions in buccal bone plate thickness and increase in palatal bone plate thickness. Conclusions: Total expansion achieved with RME was a combination of dental, skeletal and alveolar bone changes. At the first molar level, 28.45% orthopedic, 16.03% alveolar bone bending, and 55.5% orthodontic changes were observed.

Short-term treatment effects produced by rapid maxillary expansion evaluated with computed tomography: A systematic review with meta-analysis

“…Finally, a sensitivity analysis was performed for the main outcome (maxillary basal bone width) after the active expansion phase (T 1 -T 0 ) while excluding the trial by Dogra et al, 15 which showed a higher risk of bias. The sensitivity analysis showed similar results as the corresponding complete analysis, thus confirming the results of the overall meta-analysis.…”

“…Of the remaining potentially appropriate trials, 18 articles were identified as eligible to be included in qualitative and quantitative final synthesis. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] The compete flow diagram of included studies designed according to the PRISMA guideline is provided in Figure 1.…”

“…8 In order to provide clinicians with useful information related to treatment effects and the potential side effects of this technique, numerous CT studies were performed to evaluate the effects of maxillary orthopedic expansion. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] Some systematic reviews with meta-analyses have been performed to evaluate the dentoskeletal effects induced by palatal expansion. [27][28][29] However, these reviews were performed including only studies conducted with 2D radiographic techniques.…”