scholarly journals Skeletal and Alveolar Changes in Conventional Rapid Palatal Expansion (RPE) and Miniscrew-assisted RPE(MARPE): a Prospective Randomized Clinical Trial Using Low-dose CBCT

2022 ◽  
Author(s):  
Joo-Hee Chun ◽  
Amanda Cunha Regal Castro ◽  
Sunmee Oh ◽  
Kyung-Ho Kim ◽  
Sung-Hwan Choi ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Low Dose ◽  
Adolescent And Young Adult ◽  
Maxillary Expansion ◽  
Prospective Randomized Clinical Trial ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Computed Tomography Images ◽  
Basal Bone

Abstract Background: This prospective randomized clinical trial aimed to evaluate the short-term effects of rapid palatal expansion (RPE) and miniscrew-assisted RPE (MARPE) on skeletal, dentoalveolar, and periodontal structures in adolescent and young adult patients. Methods: Thirty-six patients (12 men and 24 women) requiring maxillary expansion were randomly allocated to RPE (n=17) or MARPE (n=19) groups. Upon identical (35 turns) amount of expansion, low-dose cone-beam computed tomography images were taken before treatment (T0), immediately after expansion (T1), and after a 3-month consolidation period (T2). Skeletal, dentoalveolar, and periodontal measurements were performed at each time point. Results: A greater increase in nasal width in the molar region (M-NW) and greater palatine foramen (GPF) was observed immediately after expansion (T1-T0) and consolidation periods (T2-T0) in MARPE group (P<0.05). MARPE and RPE groups showed similar dentoalveolar changes except for the maxillary width (PM-MW, M-MW) (P<0.05). Through the expansion and consolidation periods (T2-T0), lesser buccal displacement of the anchor teeth was observed in the MARPE group (PM-BBPT, PM-PBPT, M-BBPT [mesial and distal roots], and M-PBPT) (P<0.05).Conclusions: Both RPE and MARPE groups exhibited significant triangular basal bone expansion and skeletal relapse during consolidation. Under identical amounts of expansion, the MARPE group showed lower decrease in the skeletal, dentoalveolar and periodontal variables after consolidation. The reinforcement of RPE with miniscrews contributes to the maintenance of the basal bone during consolidation period. This evidence can help clinicians decide the appliance design for maxillary expansion, while preventing periodontal side effects, such as buccal bone dehiscence Trial registration: WHO Institutional Clinical Trials Registry Platform (IRB No. KCT0006871 / Registration Date 27/12/2021)

Evaluation of photobiomodulation therapy to accelerate bone formation in the mid palatal suture after rapid palatal expansion: a randomized clinical trial

2020 ◽  
Author(s):  
Denise Souza Matos ◽  
Regina Guenka Palma-Dibb ◽  
Christiano de Oliveira Santos ◽  
Maria da Conceição Pereira Saraiva ◽  
Fernanda Vicioni Marques ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Bone Formation ◽  
Randomized Clinical Trial ◽  
Photobiomodulation Therapy ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Mid Palatal Suture

scholarly journals Observational Study Regarding Possible Side Effects of Miniscrew-Assisted Rapid Palatal Expander (MARPE) with or without the Use of Corticopuncture Therapy

Biology ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 187
Author(s):  
Eugen Silviu Bud ◽  
Cristina Ioana Bică ◽  
Mariana Păcurar ◽  
Petru Vaida ◽  
Alexandru Vlasa ◽  
...  
Keyword(s):  
Observational Study ◽  
Orthodontic Appliances ◽  
Maxillary Expansion ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Basal Bone ◽  
Fixed Orthodontic Appliances ◽  
Before And After ◽  
Palatal Mucosa ◽  
Mid Palatal Suture

The use of maxillary expanders has the effect of distancing the maxillary bones at the level of the median palatal suture. During maxillary expansion, the main resistance forces occur at the zygomatico-maxillary sutures, and not in the median palatal suture, which is the basic principle on which this method is based. In this observational study, we evaluated possible complications at the skeletal and dentoalveolar level after palatal split using miniscrew-assisted rapid palatal expansion (MARPE) associated or not with corticopuncture (CP) therapy. The study included 27 patients with maxillary transverse deficiency and unilateral or bilateral cross-bite. Skeletal and dentoalveolar changes were evaluated using cone beam computed tomography (CBCT) images acquired before and after expansion. The mid-palatal suture was separated in 88.88% of cases, buccal bone height of the alveolar crest had decreased at first molar both at oral and palatal level by approximately 2.07 mm in 40.7% of cases whilst the remaining 59.3% showed insignificant bone loss, with canines exhibiting buccal tipping of 4.10° in 62.5% of cases. Changes of the occlusal planes were observed in 10 cases (37%). Maxillary canines tended to show symmetric buccal inclinations relative to the maxillary basal bone. Six patients; 22.22% showed hypertrophy/hyperplasia of the palatal mucosa associated with ulcerations, erythema, itching, and discomfort in the area. Swelling at the mid-palatal suture after split was observed in all cases and was caused by the resultant force. No cases of necrosis of the palatal mucosa were observed. Although occlusal modifications occur after palatal split, especially in unilateral cross-bite cases, these changes can be treated with the help of fixed orthodontic appliances.

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