Maxillary Expansion: A Comparison of Damon Self-Ligating Bracket Therapy with MARPE and PAOO

Abstract

Purpose. The aim of this study was to investigate arch parameters and dentoalveolar changes from pretreatment to posttreatment by comparing the Miniscrew Assisted Rapid Palatal Expansion (MARPE), Periodontally Accelerated Osteogenic Orthodontics (PAOO), and Damon self-ligating bracket therapies. Materials and Methods. Seventy-nine patients underwent maxillary expansion followed by or in conjunction with Damon ( n = 23 ), PAOO ( n = 28 ), and MARPE ( n = 28 ) therapies. Nine maxillary dental arch parameters were compared at pretreatment, posttreatment as well as, increments of treatment change. Measurements were made on STL study casts using 3Shape Ortho Analyzer 3D scanner software. Results. All groups showed significant posterior width increase in the molar area. The mean increase in inter-molar distance was more than 8X greater in MARPE group compared to Damon and more than 4X greater compared to PAOO. MARPE showed significantly greater increments of change in inter-molar width and palatal vault area Conclusions. All groups showed a significant width increase in the canine and molar area. MARPE showed the greatest increase in inter-molar width, followed by PAOO and Damon. MARPE was the only group to show a significant increase in palatal vault area.

Long-term efficacy and stability of Miniscrew-assisted Rapid Palatal Expansion in mid to late adolescents and adults: A systematic review and meta-analysis

“…2-3). Five studies showed a moderate risk of bias [19,31,32,34,35], while the rest seven studies were at a serious risk of bias [15,[26][27][28][29][30]33]. The main risk of bias comes from bias due to confounding, selection of participants, measurement of outcomes, and selection of the reported results.…”

“…Nine studies reported the changes in dental transverse widths with nasomaxillary complex expansion [15,27,[29][30][31][32][33][34][35]. Five studies included the intercanine width (ICW) [31][32][33][34][35], ve reported inter-rst premolar width (IP1W) [15,29,[33][34][35], ve reported inter-second premolar width (IP2W) [15,29,[33][34][35], and nine included the intermolar width (IMW) [15,27,[29][30][31][32][33][34][35]. The mean ICW range was 2.30 to 5.83 mm, the mean IP1W range was 3.00 to 5.33 mm, the mean IP1W range was 3.44 to 5.66 mm, and the mean IMW range was 3.46 to 7.33 mm.…”

“…The condition for cessation of activation was usually that the required expansion was achieved. Two of them clearly stated that the expansion was concluded when the width of the maxilla was no longer less than the width of the mandible [28,30], and four of them were terminated when the maxillary molar palatal cusp contacted with the lingual inclination of the buccal cusp of the mandibular molar [27,[31][32][33]. Five articles [19,[26][27][28]34] reported the duration of activation measured in months, weeks or days.…”

“…The aim of the present systematic review and meta-analysis was assessing the long-term e cacy and stability of the MARPE procedure in adults and adolescents over 13.5 years of age. From an initial 3,059 studies, ultimately 12 studies were included according to the eligibility criteria and the assessment of risk of bias [15,19,[26][27][28][29][30][31][32][33][34][35]. Since there were great differences in methodology, device design, expansion protocol, measurement and factors that may affect the results, the main outcomes were synthesized on the basis of the speci ed age range and the relatively consistent measurements.…”

“…The expansion was generally considered su cient when the width of the maxilla was no longer less than the width of the mandible [28,30], or the maxillary molar palatal cusp contacted with the lingual inclination of the buccal cusp of the mandibular molar [27,[31][32][33]. Five articles [19,[26][27][28]34] reported the duration of activation, which ranged from 13 to 122.2 days.…”