Post Expansion Evaluation of the Midpalatal Suture in Children Submitted to Rapid Palatal Expansion: a CT Study

Filho, Omar Gabriel da Silva; Lara, Túlio Silva; Silva, Helena Cristina da; Bertóz, Francisco Antônio

doi:10.17796/jcpd.31.2.tu54hu4231w1073q

Cited by 26 publications

(39 citation statements)

References 26 publications

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“…This difference could be due to the different methods of investigation, since, in the study by Podesser et al, 8 postexpansion CT examinations were performed after removing the appliance; this might lead to some immediate rebound. da Silva Filho et al 9 reported expansion values of 2.21 mm at ASW and 0.98 mm at PSW. These values are smaller than the amount of expansion obtained in our study.…”

Section: Discussionmentioning

confidence: 97%

“…In agreement with previous authors, the midpalatal suture on the coronal images showed a triangular radiolucent area, where the base is turned forward. 6,[8][9][10] The amount of expansion at the anterior portion of the suture (ASW, 3.01 mm) was variable among the subjects (range, 1.82-4.25 mm). Going from the anterior to the middle to the posterior aspect of the suture, only 43%, 31%, and 16% of the expansion of the screw (7 mm) could be explained by the distraction across the suture.…”

Section: Discussionmentioning

confidence: 99%

“…The low-dose CT scan protocol was described previously. 14 Measurements were made on the scanned images at skeletal levels, according to definitions in previous studies by Sfondrini et al 6 and da Silva Filho et al 9 The transverse dimensions of the maxilla were measured on the axial scans parallel to the palatal plane at the midpalatal suture level.…”

Section: Methodsmentioning

confidence: 99%

“…4 Since 1982, when CT was used for the first time to evaluate the effects of RME, 5 several studies have described the skeletal and dentoalveolar changes induced by RME in growing and adult patients based on standardized CT scanning registrations. [6][7][8][9][10][11] These studies, however, did not look at posttreatment changes, or had small samples of subjects, and used regular doses of x-ray exposure during the CT examinations.…”

mentioning

confidence: 99%

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Treatment and posttreatment skeletal effects of rapid maxillary expansion studied with low-dose computed tomography in growing subjects

Lione¹,

Ballanti²,

Franchi

et al. 2008

American Journal of Orthodontics and Dentofacial Orthopedics

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Introduction:The aim of this study was to apply low-dose computed tomography (CT) to evaluate treatment and posttreatment effects produced by rapid maxillary expansion (RME) at the levels of the midpalatal suture and the pterygoid processes. Methods: A sample of 17 subjects (7 boys, 10 girls; mean age, 11.2 years) was analyzed. Multi-slice CT scans were taken before RME, at the end of the active expansion phase, and after a retention period of 6 months. Statistical analysis was performed with ANOVA for repeated measures with post-hoc tests. Results: The amounts of opening of the midpalatal suture during the active phase of expansion were 3.01, 2.17, and 1.15 mm for the anterior, middle, and posterior suture widths, respectively. Pterygoid width also showed a statistically significant increase (1.49 mm). In the postretention period, all transverse measurements had significant decreases except for pterygoid width. Conclusions: At the end of the retention phase after RME therapy, the transverse width of the midpalatal suture was similar to the pretreatment width, whereas the width between the pterygoid processes was significantly increased. (Am J Orthod Dentofacial Orthop 2008;134:389-92)

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Treatment and posttreatment skeletal effects of rapid maxillary expansion studied with low-dose computed tomography in growing subjects

Lione¹,

Ballanti²,

Franchi

et al. 2008

American Journal of Orthodontics and Dentofacial Orthopedics

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“…41 In the available literature cone-beam CT technology is described by several author [45][46][47] as a means to examine RME effects; 48,49 however, the morphological appearance of the suture structure itself or measurements of the width has not been described before.…”

Section: Resultsmentioning

confidence: 99%

Measurement of the midpalatal suture width

Fricke-Zech

Gruber

Dullin

et al. 2011

The Angle Orthodontist

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Objective: To conduct a pilot study to investigate the potentiality to determine the midpalatal sutural width radiographically with a flat-panel volume computed tomography (fpVCT) in a porcine model. Materials and Methods: Bone samples from the midpalatal suture of five young (16 weeks) and five old (200 weeks) sus scrofa domestica were gathered. The midpalatal suture width was measured via fpVCT and compared to respective histological preparations. Results with P , .05 were considered significant.

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

et al. 2020

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To evaluate the efficiency of photobiomodulation therapy (PBMT) in the midpalatal suture (MPS) and pain sensation in patients undergoing rapid palatal expansion (RPE). Thirty-four individuals with the diagnosis of skeletal maxillary hypoplasia were divided in two groups: laser (n = 18) and control (n = 16). Treatment plan consisted of the use of the Hyrax expander in all patients. Subjects in the laser group were irradiated with diode laser (980 nm, 0.3 W) in six spots bilaterally distributed along the MPS for 10 s during the active phase of treatment and after overcorrection (passive phase of RPE). Control group received sham irradiations with the laser in standby mode to characterize the placebo effect. Digital occlusal radiographs were performed at different time-points for bone formation evaluation in both groups. The effects of laser irradiation on pain were assessed by the visual analog scale (Wong-Baker Faces Pain Scale). Bone formation between groups was not significantly different (p = 0.2273). At 3 months, bone formation was not yet complete in both groups. Pain sensation was similar between groups (p = 0.3940). However, pain was significantly higher for the first 7 days of treatment compared with the 14th day. PBMT did not accelerate bone regeneration in the MPS and pain sensation was similar.

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Post Expansion Evaluation of the Midpalatal Suture in Children Submitted to Rapid Palatal Expansion: a CT Study

Cited by 26 publications

References 26 publications

Treatment and posttreatment skeletal effects of rapid maxillary expansion studied with low-dose computed tomography in growing subjects

Treatment and posttreatment skeletal effects of rapid maxillary expansion studied with low-dose computed tomography in growing subjects

Measurement of the midpalatal suture width

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

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