Periodontal, dentoalveolar, and skeletal effects of tooth-borne and tooth-bone-borne expansion appliances

Toklu, Miray Gunyuz; Germeç-Çakan, Derya; Tozlu, Murat

doi:10.1016/j.ajodo.2015.02.022

Cited by 80 publications

(82 citation statements)

References 29 publications

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“…Separation of the midpalatal suture was observed in subjects of the present study, who—at a mean age of 21.6 years (range, 18.25–26.75 years)—were older than those enrolled in previous tooth-borne or bone-borne RME studies. 15 23 Of the 38 patients who had initially been enrolled, 5 patients (4 men and 1 woman; age range, 20.1–24.3 years) failed to exhibit opening of the midpalatal suture; this amounted to an 86.8% success rate in suture opening, similar to that reported in previous studies. 11 12 A study on cadavers reported only 5% of the suture to be invisible by the age of 25 years.…”

Section: Discussionsupporting

confidence: 76%

Stability of dental, alveolar, and skeletal changes after miniscrew-assisted rapid palatal expansion

et al. 2017

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ObjectiveMiniscrew-assisted rapid palatal expansion (MARPE) is a means for expanding the basal bone without surgical intervention in young adults. Here, we assessed the differences in dental, alveolar, and skeletal measurements taken before (T0), immediately after (T1), and 1 year after (T2) MARPE.MethodsTwenty-four patients (mean age, 21.6 years) who had undergone MARPE and cone-beam computed tomography at T0, T1, and T2 were included. Changes in the following parameters were compared using paired t-tests: intercusp, interapex, alveolar, nasal floor, and nasal cavity widths; inclination of the first molar (M1) and its alveolus; and thickness and height of the alveolar bone. A linear mixed-effects model was used to determine variables that affected periodontal changes in the M1.ResultsMARPE produced significant increases in most measurements during T0–T2, despite relapse of some measurements during T1–T2. The alveolar thickness decreased on the buccal side, but increased on the palatal side. The alveolar crest level at the first premolar moved apically. Changes in the thickness and height of the alveolar bone were affected by the corresponding initial values.ConclusionsMARPE can be used as an effective tool for correcting maxillomandibular transverse discrepancy, showing stable outcomes 1 year after expansion.

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Section: Discussionsupporting

confidence: 76%

Stability of dental, alveolar, and skeletal changes after miniscrew-assisted rapid palatal expansion

et al. 2017

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“…RME treatment-related structural changes have been measured using 2D radiographs and dental casts for many years, with each modality demonstrating limitations. Two-dimensional radiographs present many visual problems owing to the superimposition of structures and internal or external orientation errors, 10 whereas dental casts can only analyze dental changes with reference to other structures found on the cast itself. Few studies exist where the effects of RME on the facial complex have been studied using 3D imaging.…”

Section: Discussionmentioning

confidence: 99%

“…This study included a tooth-borne expander group, a bone-borne expander group, and a control group. Both tooth- and bone-borne expanders have been proven to be clinically effective methods, 10 yet Lin et al 12 demonstrated that patients later in adolescence exhibited larger skeletal movement with less dentoalveolar after-effects from bone-borne expanders. Lagravère et al 3 found that there was no clinical difference in expansion of the dentition between a TAME and a BAME.…”

Section: Discussionmentioning

confidence: 99%

Sphenoid bone changes in rapid maxillary expansion assessed with cone-beam computed tomography

Stepanko

Lagravère

2016

Korean J Orthod

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ObjectiveRapid maxillary expansion (RME) is used to expand the maxilla and increase arch perimeter; yet, there are few reports on its effects on the sphenoid bone. With cone-beam computed topography (CBCT), it is possible to visualize sphenoid bone changes. The purpose of this study was to investigate sphenoid bone changes observed in conjunction with RME treatments, using CBCT.MethodsSixty patients (34 women and 26 men, aged 11–17 years) underwent RME as part of their orthodontic treatment. Patients were randomly assigned to one of three groups: a tooth-anchored group, a bone-anchored group, or a control group. Initial CBCT scans were performed preceding the RME treatment (T1) and again directly after the completion of expansion (T2). Statistical analysis included ANOVA, descriptive statistics, and the intraclass correlation coefficient (ICC).ResultsThe reliability of the landmark location was at least 0.783, and the largest ICC mean measurement error was 2.32 mm. With regard to distances, the largest change was 0.78 mm, which was not statistically significant (p > 0.05). Statistical significance was established in patient groups of the same sex and treatment type for the following distance measurements: right anterior lateral pterygoid plate to the right edge of the hypophyseal fossa (d2), anterior distance between the medial pterygoid plates (d4), and anterior distance between the left medial and lateral plates (d8).ConclusionsIn this study, there were no clinically significant changes in the sphenoid bone due to RME treatments regardless of sex or treatment type.

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“…[81213] When the regular RME screw is used in such cases, a near parallel expansion of molars and cuspid region occurs. [1415161718] The arch is expanded in the region where it is not required. To that end, Schellino et al .…”

Section: Discussionmentioning

confidence: 99%

Assessment of the dental and skeletal effects of fan-type rapid maxillary expansion screw and Hyrax screw on craniofacial structures

Gopalakrishnan

Premkumar

2017

Contemp Clin Dent

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Aims and Objectives:The purpose of the study was to assess the skeletal and dental effects of fan-type rapid maxillary expansion (RME) appliance and Hyrax RME appliance on the craniofacial structures.Materials and Methods:The sample of the study included 12 patients with constricted maxillary arches. Acrylic bonded type of attachment was used for both groups. Changes in sagittal, vertical, and transverse relationship were assessed with lateral and frontal cephalograms, respectively. Intercanine and intermolar widths were measured with stone models. Pre- and immediate post-treatment records were statistically analyzed with Wilcoxon signed-rank test. The differences between the groups were evaluated using Mann–Whitney U-test. Since the data pertaining to intercanine width and intermolar width were normally distributed, parametric test of significance (unpaired t-test) was used to compare them.Results:Results showed that Hyrax presented with significantly greater increments for both nasal cavity width and maxillary width when compared to fan-type RME. Both groups had retroclination of incisors. The increase in the intercanine width was almost similar in both groups.Conclusion:Fan-type RME caused only minimal expansion of the intermolar width when compared to the Hyrax. The ratio between the intercanine and intermolar width expansion was nearly 4:1 in the fan-type RME and 0.75:1 in Hyrax.

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Periodontal, dentoalveolar, and skeletal effects of tooth-borne and tooth-bone-borne expansion appliances

Cited by 80 publications

References 29 publications

Stability of dental, alveolar, and skeletal changes after miniscrew-assisted rapid palatal expansion

Stability of dental, alveolar, and skeletal changes after miniscrew-assisted rapid palatal expansion

Sphenoid bone changes in rapid maxillary expansion assessed with cone-beam computed tomography

Assessment of the dental and skeletal effects of fan-type rapid maxillary expansion screw and Hyrax screw on craniofacial structures

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