The role of fiberoptic sinoscopy in evaluation the effect of surgically rapid maxillary expansion on the nasal airways

Rapid maxillary expansion is defined as the release of medio-palatine suture using an orthopedic forces. The role of this procedure is to expand the upper jaw in order to achieve the broadening of the upper arch. This study was initiated to quantify the effects of disjunction and post- treatment bone changes, after an adequate contention which lasted for three weeks. This study is carried on laboratory animals (common breed rabbit) to determine tensile strength and the elasticity modulus of biological materials used in orthdodontics. The results of the study are consistent with those reported in the literature reference.

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The role of rapid maxillary expansion in the promotion of oral and general health

Progress in Orthodontics ◽

10.1186/s40510-015-0105-x ◽

2015 ◽

Vol 16 (1) ◽

Cited By ~ 37

Author(s):

James A. McNamara ◽

Roberta Lione ◽

Lorenzo Franchi ◽

Fernanda Angelieri ◽

Lucia HS Cevidanes ◽

...

Keyword(s):

General Health ◽

Rapid Maxillary Expansion ◽

Maxillary Expansion

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Effect of surgically assisted rapid maxillary expansion on the nasal airways

Al-Azhar Journal of Dental Science ◽

10.21608/ajdsm.2019.71719 ◽

2019 ◽

Vol 22 (1) ◽

pp. 59-64

Author(s):

Arafa Ibrahim ◽

Mansour Hussein ◽

Mohammad Shuman

Keyword(s):

Rapid Maxillary Expansion ◽

Maxillary Expansion ◽

Nasal Airways

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Rhinofibroscopic and Rhinomanometric Evaluation of Patients with Maxillary Contraction Treated with Rapid Maxillary Expansion. A Prospective Pilot Study

Journal of Clinical Pediatric Dentistry ◽

10.17796/1053-4628-42.1.5 ◽

2018 ◽

Vol 42 (1) ◽

pp. 27-31 ◽

Cited By ~ 2

Author(s):

Luca Di Vece ◽

Tiziana Doldo ◽

Giacomo Faleri ◽

Maria Picciotti ◽

Lorenzo Salerni ◽

...

Keyword(s):

Rapid Maxillary Expansion ◽

Nasal Resistance ◽

Maxillary Expansion ◽

Upper Airways ◽

Nasal Airways ◽

Palatal Expansion ◽

Rapid Palatal Expansion ◽

Maxillary Constriction ◽

Optic Endoscopy ◽

Spearman’S Correlation

Objective: The aim of this study was to evaluate through nasal fiber optic endoscopy and rhinomanometry the patency of upper nasal airways in patients treated with rapid palatal expansion Study design: 30 patients (12 males and 18 females) aged 7–11 years with transverse maxillary constriction underwent rhinomanometric and fiberoptic examination before (T0) and after rapid palatal expansion (T1).The amount of nasopharynx obstruction was quantified with reference to the full choanal surface. Nasal resistance was recorded separately for right and left sides, and combined for both sides. The differences in nasopharynx obstruction and in nasal resistance between T0 and T1 were statistically evaluated. Results: The amount of nasopharynx obstruction significantly decreased after palatal expansion (p<0.001). Total nasal inspiration and expiration resistance significantly decreased at T1 (p<0.001). The reduction ranged between 0. 23 and 0. 66 Pa/cm3/s for inspiration and between 0. 20 and 0,.58 Pa/cm3/s for expiration. A statistically significant positive correlation existed between the T1-T0 differences in the amount of nasopharynx obstruction and the T1-T0 differences in expiration nasal airway resistance (Spearman's correlation coefficient rho = 0.38; p = 0.03). Conclusions: Rapid maxillary expansion has an influence on nasal resistance and improves the patency of upper airways in patients with minor or moderate breathing problems.

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Role of mandibular displacement and airway size in improving breathing after rapid maxillary expansion

Progress in Orthodontics ◽

10.1186/s40510-014-0040-2 ◽

2014 ◽

Vol 15 (1) ◽

Cited By ~ 26

Author(s):

Rosamaria Fastuca ◽

Piero Antonio Zecca ◽

Alberto Caprioglio

Keyword(s):

Rapid Maxillary Expansion ◽

Maxillary Expansion

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RAPID PALATAL EXPANSION AND ITS FEATURES

ASJ. ◽

10.31618/asj.2707-9864.2020.2.40.23 ◽

2020 ◽

Vol 2 (40) ◽

pp. 20-22

Author(s):

A.K. Al Dzhafari ◽

S.A. Ulyanovskaya

Keyword(s):

Rapid Maxillary Expansion ◽

Maxillary Expansion ◽

Maxillofacial Region ◽

Posterior Teeth ◽

Anatomical Features ◽

Palatal Expansion ◽

Rapid Palatal Expansion ◽

Congenital Deformities ◽

Upper Jaw ◽

Mid Palatal Suture

Rapid Maxillary expansion or palatal expansion as it is sometimes called, occupies unique niche in dentofacial therapy. Rapid Maxillary expansion (RME) is a skeletal type of expansion that involves the separation of the mid-palatal suture and movement of the maxillary shelves away from each other. RME effects the maxillary complex, palatal vaults, maxillary anterior and posterior teeth, adjacent periodontal structures to bring about an expansion in the maxillary arch. Morphogenesis and anatomical features of the upper jaw determine the choice of the method of rapid palatal expansion with narrowing of the upper dentition, as an effective method for eliminating congenital deformities of the maxillofacial region. The majority of dental transverse measurements changed significantly as a result of RME. The maturity of the maxillofacial structures determines the timing and degree of success of rapid palatal dilatation treatment.

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A Review on Rapid Maxillary Expansion

Indian Journal of Public Health Research & Development ◽

10.37506/v10/i12/2019/ijphrd/192386 ◽

2019 ◽

Vol 10 (12) ◽

pp. 2455

Author(s):

S. Vaibava Keerthana ◽

Kishore Kumar ◽

V. Thailavathy

Keyword(s):

Rapid Maxillary Expansion ◽

Maxillary Expansion

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Nonsurgical miniscrew-assisted rapid maxillary expansion results in acceptable stability in young adults

The Angle Orthodontist ◽

10.2319/101415-689.1 ◽

2016 ◽

Vol 86 (5) ◽

pp. 713-720 ◽

Cited By ~ 40

Author(s):

Sung-Hwan Choi ◽

Kyung-Keun Shi ◽

Jung-Yul Cha ◽

Young-Chel Park ◽

Kee-Joon Lee

Keyword(s):

Young Adults ◽

Treatment Modality ◽

Orthodontic Treatment ◽

Rapid Maxillary Expansion ◽

Maxillary Expansion ◽

Initial Examination ◽

The Stability ◽

Maxillary Deficiency ◽

Time Point

ABSTRACT Objective: To evaluate the stability of nonsurgical miniscrew-assisted rapid maxillary expansion (MARME) in young adults with a transverse maxillary deficiency. Materials and Methods: From a total of 69 adult patients who underwent MARME followed by orthodontic treatment with a straight-wire appliance, 20 patients (mean age, 20.9 ± 2.9 years) with follow-up records (mean, 30.2 ± 13.2 months) after debonding were selected. Posteroanterior cephalometric records and dental casts were obtained at the initial examination (T0), immediately after MARME removal (T1), immediately after debonding (T2), and at posttreatment follow-up (T3). Results: Suture separation was observed in 86.96% of subjects (60/69). An increase in the maxillary width (J-J; 1.92 mm) accounted for 43.34% of the total expansion with regard to the intermolar width (IMW) increase (4.43 mm; P < .001) at T2. The amounts of J-J and IMW posttreatment changes were −0.07 mm (P > .05) and −0.42 mm (P = .01), respectively, during retention. The postexpansion change in middle alveolus width increased with age (P < .05). The postexpansion change of interpremolar width (IPMW) was positively correlated with the amount of IPMW expansion (P < .05) but not with IMW. The changes of the clinical crown heights in the maxillary canines, first premolars, and first molars were not significant at each time point. Conclusions: Nonsurgical MARME can be a clinically acceptable and stable treatment modality for young adults with a transverse maxillary deficiency.

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Comparison of Tooth- and Bone-Borne Appliances on the Stress Distributions and Displacement Patterns in the Facial Skeleton in Surgically Assisted Rapid Maxillary Expansion—A Finite Element Analysis (FEA) Study

Materials ◽

10.3390/ma14051152 ◽

2021 ◽

Vol 14 (5) ◽

pp. 1152

Author(s):

Rafał Nowak ◽

Anna Olejnik ◽

Hanna Gerber ◽

Roman Frątczak ◽

Ewa Zawiślak

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Three Dimensional ◽

Element Model ◽

Rapid Maxillary Expansion ◽

Stress Distributions ◽

Maxillary Expansion ◽

Facial Skeleton ◽

Element Analysis ◽

Maxillary Constriction

The aim of this study was to compare the reduced stresses according to Huber’s hypothesis and the displacement pattern in the region of the facial skeleton using a tooth- or bone-borne appliance in surgically assisted rapid maxillary expansion (SARME). In the current literature, the lack of updated reports about biomechanical effects in bone-borne appliances used in SARME is noticeable. Finite element analysis (FEA) was used for this study. Six facial skeleton models were created, five with various variants of osteotomy and one without osteotomy. Two different appliances for maxillary expansion were used for each model. The three-dimensional (3D) model of the facial skeleton was created on the basis of spiral computed tomography (CT) scans of a 32-year-old patient with maxillary constriction. The finite element model was built using ANSYS 15.0 software, in which the computations were carried out. Stress distributions and displacement values along the 3D axes were found for each osteotomy variant with the expansion of the tooth- and the bone-borne devices at a level of 0.5 mm. The investigation showed that in the case of a full osteotomy of the maxilla, as described by Bell and Epker in 1976, the method of fixing the appliance for maxillary expansion had no impact on the distribution of the reduced stresses according to Huber’s hypothesis in the facial skeleton. In the case of the bone-borne appliance, the load on the teeth, which may lead to periodontal and orthodontic complications, was eliminated. In the case of a full osteotomy of the maxilla, displacements in the buccolingual direction for all the variables of the bone-borne appliance were slightly bigger than for the tooth-borne appliance.

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