scholarly journals Analysis of the pterygopalatine fossa in patients undergoing surgically-assisted rapid maxillary expansion: a morphometric study using cone beam

2021 ◽  
Vol 10 (12) ◽  
pp. e158101220388
Author(s):  
Isabella Maria Zanutto ◽  
Liogi Iwaki Filho ◽  
Breno Gabriel da Silva ◽  
Mariliani Chicarelli da Silva ◽  
Elen de Souza Tolentino ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Rapid Maxillary Expansion ◽  
Pterygopalatine Fossa ◽  
Cone Beam ◽  
Morphometric Study ◽  
Maxillary Expansion ◽  
The One ◽  
Level Of Significance ◽  
The Right ◽  
Group D

This retrospective, observational, longitudinal study performed a morphometric analysis of the pterygopalatine fossa (PPF) in patients undergoing surgically assisted rapid maxillary expansion (SARME) using cone beam CT (CBCT). CBCT scans of 41 consecutive patients were assessed and the following measurements were performed: PPF volume (PPFV), height (PPFH), length (PPFL) and angle (PPFA). The sample was divided into groups D (patients undergoing SARME; n=26) and control (n=15). Group D was subdivided into D+ (with pterygomaxillary disjunction – PMD) and D- (without PMD). The differences between the pre and postoperative periods were tested using the U Mann-Whitney or the t-test. Groups D+ and D- were compared using the one-way ANOVA or Kruskal-Wallis tests (level of significance set at 5%). In general, there were morphometric variations in PPF, with lower values after SARME. Differences for PPFH, PPFL and PPFA were not significant (p>0.05). On the right side, there were differences in PPFV, with lower values in patients from group D+ (p<0.05). These findings indicate a morphometric reduction of PPF after SARME, with differences when the disjunction is performed or not. The maxillofacial surgeon must be aware of these changes when performing SARME with or without disjunction.

Cone Beam CT evaluation of skeletal and nasomaxillary complex volume changes after rapid maxillary expansion in OSA children

2021 ◽  
Author(s):  
Paola Pirelli ◽  
Valeria Fiaschetti ◽  
Ezio Fanucci ◽  
Aldo Giancotti ◽  
Roberta Condo ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Rapid Maxillary Expansion ◽  
Cone Beam ◽  
Maxillary Expansion ◽  
Volume Changes ◽  
Ct Evaluation

scholarly journals Upper airway expansion after rapid maxillary expansion evaluated with cone beam computed tomography

2012 ◽  
Vol 82 (3) ◽  
pp. 458-463 ◽  
Author(s):  
Annelise Nazareth Cunha Ribeiro ◽  
João Batista de Paiva ◽  
José Rino-Neto ◽  
Edson Illipronti-Filho ◽  
Tarcila Trivino ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Upper Airway ◽  
Rapid Maxillary Expansion ◽  
Cone Beam ◽  
Maxillary Expansion

scholarly journals Effects of rapid maxillary expansion in cleft patients resulting from the use of two different expanders

2016 ◽  
Vol 21 (6) ◽  
pp. 82-90 ◽  
Author(s):  
Daniel Santos Fonseca Figueiredo ◽  
Lucas Cardinal ◽  
Flávia Uchôa Costa Bartolomeo ◽  
Juan Martin Palomo ◽  
Martinho Campolina Rebello Horta ◽  
...  
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Rapid Maxillary Expansion ◽  
Cone Beam ◽  
Tomographic Image ◽  
Maxillary Expansion ◽  
Downward Movement ◽  
Computed Tomographic ◽  
Significant Difference ◽  
Maxillary Region

ABSTRACT Objective: The aim of this study was to evaluate the skeletal and dental effects of rapid maxillary expansion (RME) in cleft patients using two types of expanders. Methods: Twenty unilateral cleft lip and palate patients were randomly divided into two groups, according to the type of expander used: (I) modified Hyrax and (II) inverted Mini-Hyrax. A pretreatment cone-beam computed tomographic image (T0) was taken as part of the initial orthodontic records and three months after RME, for bone graft planning (T1). Results: In general, there was no significant difference among groups (p > 0.05). Both showed a significant transverse maxillary expansion (p < 0.05) and no significant forward and/or downward movement of the maxilla (p > 0.05). There was greater dental crown than apical expansion. Maxillary posterior expansion tended to be larger than anterior opening (p < 0.05). Cleft and non-cleft sides were symmetrically expanded and there was no difference in dental tipping between both sides (p > 0.05). Conclusions: The appliances tested are effective in the transverse expansion of the maxilla. However, these appliances should be better indicated to cleft cases also presenting posterior transverse discrepancy, since there was greater expansion in the posterior maxillary region than in the anterior one.

scholarly journals Evaluation of Anatomoradiological Findings on Trigeminal Neuralgia Patients Using Computed Tomography and Cone-Beam Computed Tomography

Diagnostics ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Seçil Aksoy ◽  
Arzu Sayın Şakul ◽  
Durmuş İlker Görür ◽  
Bayram Ufuk Şakul ◽  
Kaan Orhan
Keyword(s):  
Computed Tomography ◽  
Trigeminal Neuralgia ◽  
Cone Beam Ct ◽  
Median Plane ◽  
Cone Beam ◽  
Foramen Ovale ◽  
Percutaneous Procedures ◽  
The Right ◽  
And Control ◽  
Supraorbital Foramen

The study aimed to establish and evaluate anatomoradiological landmarks in trigeminal neuralgia patients using computed tomography (CT) and cone-beam CT. CT images of 40 trigeminal neuralgia (TN) and 40 healthy individuals were retrospectively analyzed and enrolled in the study. The width and length of the foramen rotundum (FR), foramen ovale (FO), foramen supraorbitale, and infraorbitale were measured. The distances between these foramen, between these foramen to the median plane, and between the superior orbital fissure, FO, and FR to clinoid processes were also measured bilaterally. Variations were evaluated according to groups. Significant differences were found for width and length of the foramen ovale, length of the foramen supraorbitale, and infraorbitale between TN and control subjects (p < 0.05). On both sides, FO gets narrower and the length of the infraorbital and supraorbital foramen shortens in the TN group. In most of the control patients, the plane which passes through the infraorbital and supraorbital foramen intersects with impression trigeminale; 70% on the right-side, and 67% in the left-side TN groups. This plane does not intersect with impression trigeminale and deviates in certain degrees. The determination of specific landmarks allows customization to individual patient anatomy and may help the surgeon achieve a more selective effect with a variety of percutaneous procedures in trigeminal neuralgia patients.

scholarly journals Rapid maxillary expansion in the treatment of the functional posterior crossbite: joint noise and electromyographic activity analysis

2019 ◽  
Vol 48 ◽  
Author(s):  
Diego Jesus Brandariz PIMENTEL ◽  
Laís Valencise MAGRI ◽  
Melissa de Oliveira MELCHIOR ◽  
Guido Artemio MARAÑÓN-VÁSQUEZ ◽  
Mirian Aiko Nakane MATSUMOTO ◽  
...  
Keyword(s):  
Masticatory Muscles ◽  
Rapid Maxillary Expansion ◽  
Electromyographic Activity ◽  
Maxillary Expansion ◽  
Posterior Crossbite ◽  
Stomatognathic System ◽  
End Of Treatment ◽  
Before And After ◽  
Electromyographic Analysis ◽  
Level Of Significance

Abstract Introduction The rapid maxillary expansion (RME) reduces the risk of developing structural and functional disorders in the stomatognathic system. Objective To examine the effects of the RME as a treatment for the posterior crossbite, related with the electromyographic activity of the masticatory muscles and the TMJ noises in a population of children. Material and method 13 girls and 7 boys, regardless of the type of malocclusion, with a mean age of 9 years old (± 3), were treated with RME. The electrovibratography analyzed the TMJ noise, and the electromyography analyzed the masticatory muscles before treatment (T0) and after three months of a short-term follow-up (T1). The comparisons of the affected and unaffected sides by the crossbite were performed using Mann-Whitney’s test, and to compare data before and after treatment the Wilcoxon’s test was used (level of significance: 5%). Result No significant differences were found in the parameters of joint noise in comparison to the sides affected and unaffected by the crossbite, in both T0 and T1 (p>0.05); only the side without the crossbite observed decrease in the peak amplitude of the joint noises after treatment. In the static electromyographic analysis, inter-side differences were observed before and after treatment, since the deliberate unilateral chewing showed greater asymmetry activity in T0 for both sides, which has been corrected after treatment, improving the functional chewing. Conclusion The proposed treatment did not lead to the occurrence of joint noises and improved the functional pattern of electromyographic activity during chewing at the end of treatment.

Gingival thickness assessment at mandibular incisors of orthodontic patients with ultrasound and cone-beam ct.

2019 ◽  
Author(s):  
Dimitrios Kloukos ◽  
Lydia Kakali ◽  
George Koukos ◽  
Anton Sculean ◽  
Andreas Stavropoulos ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Point Estimate ◽  
Central Incisor ◽  
Gingival Thickness ◽  
Significant Difference ◽  
Orthodontic Patients ◽  
Clinically Significant ◽  
The Right ◽  
Mandibular Incisors

Abstract Background Quantitative and qualitative analysis of several periodontal parameters plays an important role in several dental procedures. Aim of the current study was to assess gingival thickness (GT) at mandibular incisors of orthodontic patients with two methods and determine how these methods are compared to each other when assessing periodontal anatomy through soft tissue thickness.Methods The sample consisted of 40 consecutive adult orthodontic patients. GT was measured at both central mandibular incisors, mid-facially on the buccal aspect, 2mm apically to the free gingival margin with two methods: a) clinically with an Ultrasound device (USD) and b) radiographically with Cone Beam Computed Tomography (CBCT).Results CBCT measurements were consistently higher than USD measurements, with the difference ranging from 0.13 mm to 0.21 mm. No difference was noted between the repeated CBCT measurements at the right central incisor (Bias= 0.05 mm; 95% CI= -0.01, 0.11, p=0.104). Although the respective results for the left incisor indicated, statistically, that the measurements were not exactly replicated, the magnitude of the point estimate was small and not clinically significant (Bias= 0.06 mm; 95% CI= 0.01, 0.11, p=0.014). Small differences between CBCT measurements made by the 2 examiners at the left central incisor (bias= 0.06 mm, 95% CI= 0.01, 0.11, p=0.014) were detected. However, this difference was minor, and again, not clinically significant. The respective analysis on the right incisor showed no significant difference (bias= 0.05 mm, 95% CI= -0.01, 0.11, p=0.246).Conclusions Present data indicate that CBCT measurements were highly reproducible and yielded greater values compared to USD measurements.

scholarly journals Periodontal clinical evaluation before and after surgically assisted rapid maxillary expansion

2018 ◽  
Vol 23 (1) ◽  
pp. 79-86 ◽  
Author(s):  
Michelle Sendyk ◽  
Wilson Roberto Sendyk ◽  
Débora Pallos ◽  
Letícia Cristina Cidreira Boaro ◽  
João Batista de Paiva ◽  
...  
Keyword(s):  
Gingival Recession ◽  
Rapid Maxillary Expansion ◽  
Central Incisor ◽  
Maxillary Expansion ◽  
Clinical Attachment Level ◽  
Posterior Crossbite ◽  
Attached Gingiva ◽  
Before And After ◽  
The Right ◽  
Attachment Level

ABSTRACT Introduction: The surgically assisted rapid maxillary expansion is a procedure that reduces the resistance of the sutures correcting the posterior crossbite in adults. Objective: The aim of this study was to evaluate the periodontal status of 17 adults submitted to this procedure. Methods: The clinical attachment level (CAL), gingival recession, attached gingiva and bleeding were evaluated in maxillary first premolars and molars, central and lateral incisors of right and left sides before surgery, 5 days and 6 months after. Means, standard deviation, medians, minimum and maximum values were compared among the evaluations using the Friedman and McNemar tests. Results: There was a statistically significant increase in CAL in the right central incisor, right and left premolars and right and left molars. There was a statistically significant increase in gingival recession in the right and left premolars and molars. The amount of attached gingiva significantly decreased in right premolars and right and left molars. There was increase in bleeding in most of the teeth. Conclusion: Results indicated that the surgically assisted rapid maxillary expansion might cause alterations in periodontal tissue.

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