Incorporation of Stress-Dependency in the Modeling of Midpalatal Suture Behavior During Maxillary Expansion Treatment

2013 ◽  
Author(s):  
D. L. Romanyk ◽  
S. S. Liu ◽  
M. G. Lipsett ◽  
M. O. Lagravere ◽  
R. W. Toogood ◽  
...  
Keyword(s):  
Maxillary Expansion ◽  
Midpalatal Suture ◽  
Upper Jaw ◽  
Additional Space ◽  
Stress Dependency

In order to widen a patient’s upper jaw, or maxilla, orthodontists will make use of a maxillary expansion (ME) appliance. This procedure is typically used in adolescents having a narrow maxillary complex. Widening the jaw may be achieved through a variety of means such as expansion screws or springs [1]; however, they are all utilized to generate additional space allowing for correction of various tooth misalignments. An example of a common appliance is provided in Fig. 1a.

Calculations used for assessment of rapid maxillary expansion

ORL ro ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 24-26
Author(s):  
Ruxandra Bartok ◽  
Bogdan Dimitriu Dimitriu ◽  
Constantin Vârlan ◽  
Radu Stanciu ◽  
Georgiana Moldoveanu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Elasticity Modulus ◽  
Rapid Maxillary Expansion ◽  
Laboratory Animals ◽  
Maxillary Expansion ◽  
Literature Reference ◽  
Bone Changes ◽  
Upper Jaw ◽  
Materials Used

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.  

RAPID PALATAL EXPANSION AND ITS FEATURES

ASJ. ◽  
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.

scholarly journals Digital radiographic evaluation of the midpalatal suture in patients submitted to rapid maxillary expansion

2013 ◽  
Vol 24 (1) ◽  
pp. 76 ◽  
Author(s):  
Maria de FátimaBatista de Melo ◽  
SauloLeonardo Sousa Melo ◽  
TiagoGorgulho Zanet ◽  
Marlene Fenyo-Pereira
Keyword(s):  
Rapid Maxillary Expansion ◽  
Radiographic Evaluation ◽  
Maxillary Expansion ◽  
Midpalatal Suture

Sagittal expansion of the maxilla in an adult. A clinical case

2021 ◽  
Vol 21 (3) ◽  
pp. 207-210
Author(s):  
D. J. Yakoub ◽  
I. V. Startceva ◽  
O. I. Admakin ◽  
I. A. Solop
Keyword(s):  
Clinical Case ◽  
Treatment Method ◽  
Postembryonic Development ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Skeletal Class ◽  
Bone Deficiency ◽  
Growth Guidance ◽  
Upper Jaw ◽  
Maxillary Incisors

Relevance. Skeletal Class III malocclusion is one of the most difficult to correct. Genetics, environmental factors, and postembryonic development influence its etiology. Sagittal expansion of the upper jaw will ensure the correct position of the lower jaw, which in turn will improve the patient's aesthetic parameters and health. The study examines a treatment method using the Fixed anterior growth guidance appliance (FAGGA).Materials and methods. This clinical case presents a 21-year-old male with skeletal class III due to maxillary bone deficiency. The patient refused surgery to increase the size of the upper jaw and opted for orthodontic treatment. The latter was performed using a Fixed anterior growth guidance appliance (FAGGA), followed by a rapid palatal (maxillary) expansion (RME) and brackets. We removed the FAGGA after eight months. The profile and occlusion improved.Results. The change in the inclination and protrusion of the maxillary incisors improved the profile. We received 2mm of space behind the upper right canine and 1.5mm of space behind the left one and the SNA angle increased by 2 degrees. The treatment continues with RME and brackets.Conclusions. An increase in inclination and protrusion of the maxillary incisors and a slight skeletal change improved the aesthetic parameters of the facial area.

scholarly journals Midpalatal suture maturation: Classification method for individual assessment before rapid maxillary expansion

2013 ◽  
Vol 144 (5) ◽  
pp. 759-769 ◽  
Author(s):  
Fernanda Angelieri ◽  
Lucia H.S. Cevidanes ◽  
Lorenzo Franchi ◽  
João R. Gonçalves ◽  
Erika Benavides ◽  
...  
Keyword(s):  
Rapid Maxillary Expansion ◽  
Classification Method ◽  
Maxillary Expansion ◽  
Midpalatal Suture ◽  
Individual Assessment

scholarly journals Midpalatal suture maturation stage assessment in adolescents and young adults using cone-beam computed tomography

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Ludy Marileidy Jimenez-Valdivia ◽  
Violeta Malpartida-Carrillo ◽  
Yalil Augusto Rodríguez-Cárdenas ◽  
Heraldo Luis Dias-Da Silveira ◽  
Luis Ernesto Arriola-Guillén
Keyword(s):  
Computed Tomography ◽  
Young Adults ◽  
Cone Beam Computed Tomography ◽  
Adolescents And Young Adults ◽  
Cone Beam ◽  
Maturation Stage ◽  
Maxillary Expansion ◽  
Cross Sectional ◽  
Midpalatal Suture ◽  
Maturation Stages

Abstract Background The aim of this study was to evaluate the midpalatal suture maturation stages in adolescents and young adults using cone-beam computed tomography (CBCT). Methods The sample comprised 200 CBCT scans of individuals aged 10 to 25 years old (95 males and 105 females) divided into three groups, adolescents (n = 48), post-adolescents (n = 52), and young adults (n = 100). The Planmeca ProMax 3D software was used for the midpalatal suture maturation stage evaluation according to Angieleri’s method, using cross-sectional axial slice. Two previously calibrated examiners analyzed the images and classified according to five different maturation stages. A, B, and C stages were considered with open midpalatal suture, and D and E were considered without open midpalatal suture. Association tests were performed using chi-square test also, and a binary logistic regression was evaluated (P < 0.05). Results The possibility to find open midpalatal suture in individuals of 10 to 15 years old was 70.8%, in subject aged 16 to 20 and 21 to 25 years old was 21.2% and 17%, respectively. Furthermore, this possibility in individuals older than 16 years was greater in males than in females. Conclusions The possibility to find open midpalatal suture in post-adolescents and young adults is greater than the orthodontists considered years ago. Furthermore, men are more likely to find midpalatal suture opening. These implications might be considered by the orthodontists when maxillary expansion is required. Besides, the ossification of the middle palatal suture is very variable, and therefore, the use of CBCT might be recommended to clarify this possibility.

scholarly journals Stimulation of Bone Formation by Dietary Boron in an Orthopedically Expanded Suture in Rabbits

2009 ◽  
Vol 79 (5) ◽  
pp. 984-990 ◽  
Author(s):  
Tancan Uysal ◽  
Ayca Ustdal ◽  
Mehmet Fatih Sonmez ◽  
Figen Ozturk
Keyword(s):  
Bone Regeneration ◽  
White Male ◽  
Maxillary Expansion ◽  
Retention Period ◽  
Midpalatal Suture ◽  
Group 4 ◽  
Dietary Boron ◽  
Group 3 ◽  
Group 2 ◽  
Positive Effect

Abstract Objective: To evaluate the effects of dietary boron on bone regeneration in rabbits in response to expansion of the midpalatal suture during different retention periods. Materials and Methods: Twenty-eight 12-week-old New Zealand white male rabbits were separated into four equal groups: group 1 (B+10) and group 2 (B−10) had retention periods of 10 days with or without boron intake, respectively. Group 3 (B+20, with boron) and group 4 (B−20, without boron) were retained for 20 days. All groups had a 5-day expansion period. For both B+ groups, boron was prepared in distilled water and given to the rabbits during their (1) nursery phase (40 days), (2) expansion phase, and (3) retention period at a dosage of 3 mg/kg daily by oral gavage. Bone regeneration in the midpalatal suture was evaluated by a bone histomorphometric method, and the mineralized area (Md.Ar), fibrosis area (Fb.Ar), mineralized area/fibrosis area (Md.Ar/Fb.Ar), bone area (B.Ar) and osteoblast number (N.Ob) parameters were evaluated. Results: Statistical analysis showed significant differences between groups for all investigated measurements. Md.Ar (P &lt; .01), Md.Ar/Fb.Ar (P &lt; .001), B.Ar (P &lt; .01), and N.Ob (P &lt; .01) parameters were increased and Fb.Ar (P &lt; .01) was decreased in groups B+10 and B+20. No significant differences were observed during an additional 10-day retention period in all groups (P &lt; .05). Conclusions: Boron has a positive effect on the early phase of bone regeneration of the midpalatal suture in response to expansion and may be beneficial in routine maxillary expansion procedures.

scholarly journals Influence of Orthodontic Rapid Maxillary Expansion on Nocturnal Enuresis in Children

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Lidia Hyla-Klekot ◽  
Marek Truszel ◽  
Andrzej Paradysz ◽  
Lidia Postek-Stefańska ◽  
Marcin Życzkowski
Keyword(s):  
Comparative Analysis ◽  
Statistical Analysis ◽  
Nocturnal Enuresis ◽  
Orthodontic Treatment ◽  
Treated Group ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Group A ◽  
Upper Jaw ◽  
Group B

Background. The etiology of nocturnal enuresis (NE) is multifactorial and has not been fully explained yet. New ways of treatment are constantly being investigated, including the rapid maxillary expansion (RME).Methods. A total of 41 patients diagnosed with NE were divided into two experimental groups: A and B. Group A included 16 children who have been treated with RME. Group B comprised 25 children who have not undertaken orthodontic treatment. Children from both groups have been monitored in monthly intervals, during a 12-month period, towards the intensification of NE. The comparative analysis of both groups has been conducted after 3 years of observation.Results. Statistical analysis has shown a 4.5 times increase of the probability of reduction of NE in the case of the treated group in comparison with the group of children who have not undergone orthodontic treatment. Unfortunately, the chance of obtaining total dryness diminished proportionally to the higher degree of intensification of enuresis at the beginning of the test.Conclusion. RME can constitute an alternative method of NE treatment in children, irrespective of the occurrence of upper jaw narrowing.

scholarly journals Midpalatal Suture Density Evaluation after Rapid and Slow Maxillary Expansion with a Low-Dose CT Protocol: A Retrospective Study

Medicina ◽  
2020 ◽  
Vol 56 (3) ◽  
pp. 112 ◽  
Author(s):  
Rosamaria Fastuca ◽  
Ambra Michelotti ◽  
Riccardo Nucera ◽  
Vincenzo D’Antò ◽  
Angela Militi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Low Dose ◽  
Similar Rate ◽  
Rapid Maxillary Expansion ◽  
Regions Of Interest ◽  
Maxillary Expansion ◽  
Midpalatal Suture ◽  
Ct Protocol ◽  
Density Evaluation ◽  
Low Dose Computed Tomography

Background and objectives: The aim of the present paper is to use low-dose computed tomography (CT) to evaluate the changes in the midpalatal suture density in patients treated with rapid maxillary expansion (RME) and slow maxillary expansion (SME). Materials and Methods: Thirty patients (mean age 10.2 ± 1.2 years) were retrospectively selected from the existing sample of a previous study. For each patient, a low-dose computed tomography examination was performed before appliance placement (T0) and at the end of retention (T1), seven months later. Using the collected images, the midpalatal suture density was evaluated in six regions of interest. Results: No significant differences were found between the timepoints in the rapid maxillary expansion group. Three out of six regions of interest showed significant decreases between the timepoints in the slow maxillary expansion group. No significant differences were found in comparisons between the two groups. Conclusions: The midpalatal suture density showed no significant differences when rapid maxillary expansion groups were compared to slow maxillary expansion groups, suggesting that a similar rate of suture reorganization occurs despite different expansion protocols.

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