scholarly journals Immediate periodontal bone plate changes induced by rapid maxillary expansion in the early mixed dentition: CT findings

2014 ◽  
Vol 19 (3) ◽  
pp. 36-43 ◽  
Author(s):  
Daniela Gamba Garib ◽  
Maria Helena Ocké Menezes ◽  
Omar Gabriel da Silva Filho ◽  
Patricia Bittencourt Dutra dos Santos
Keyword(s):  
Plate Thickness ◽  
Spiral Ct ◽  
Distal Region ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Bone Plate ◽  
Permanent Teeth ◽  
Slight Reduction ◽  
Maxillary Expansion ◽  
Posterior Teeth

OBJECTIVE: This study aimed at evaluating buccal and lingual bone plate changes caused by rapid maxillary expansion (RME) in the mixed dentition by means of computed tomography (CT). METHODS: The sample comprised spiral CT exams taken from 22 mixed dentition patients from 6 to 9 years of age (mean age of 8.1 years) presenting constricted maxillary arch treated with Haas-type expanders. Patients were submitted to spiral CT scan before expansion and after the screw activation period with a 30-day interval between T1 and T2. Multiplanar reconstruction was used to measure buccal and lingual bone plate thickness and buccal bone crest level of maxillary posterior deciduous and permanent teeth. Changes induced by expansion were evaluated using paired t test (p < 0.05). RESULTS: Thickness of buccal and lingual bone plates of posterior teeth remained unchanged during the expansion period, except for deciduous second molars which showed a slight reduction in bone thickness at the distal region of its buccal aspect. Buccal bone dehiscences were not observed in the supporting teeth after expansion. CONCLUSION: RME performed in mixed dentition did not produce immediate undesirable effects on periodontal bone tissues.

Buccal bone plate thickness after rapid maxillary expansion in mixed and permanent dentitions

2019 ◽  
Vol 155 (2) ◽  
pp. 198-206 ◽  
Author(s):  
Michele Vito Digregorio ◽  
Rosamaria Fastuca ◽  
Piero Antonio Zecca ◽  
Alberto Caprioglio ◽  
Manuel O. Lagravère
Keyword(s):  
Plate Thickness ◽  
Rapid Maxillary Expansion ◽  
Bone Plate ◽  
Maxillary Expansion

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.

Resorption of multirooted temporary teeth in children with dentofacial anomalies in accordance with the orthopantomography data

2020 ◽  
Vol 20 (3) ◽  
pp. 235-241
Author(s):  
F. S. Ayupova ◽  
S. N. Alekseenko ◽  
V. Ya. Zobenko ◽  
T. V. Gayvoronskaya
Keyword(s):  
Primary Teeth ◽  
Root Resorption ◽  
Type A ◽  
Mixed Dentition ◽  
Permanent Teeth ◽  
Primary Molars ◽  
Second Primary ◽  
X Rays ◽  
Primary Molar ◽  
Posterior Teeth

Relevance. To study the incidence of different types of resorption of multirooted primary teeth, to specify indications for deciduous molar extraction to prevent eruption abnormalities of permanent posterior teeth in mixed dentition.Materials and methods. Root resorption of 375 multirooted primary teeth (166 first primary molars and 209 second primary molars) was studied on panoramic X-rays of 60 children (30 girls and 30 boys) aged between 7 and 15. Illustrated classification by T.F. Vinogradova (1967) improved by authors was used to determine type and degree of root resorption of multi-rooted primary teeth. Received data were described with absolute values of number of cases and percentage. Chi-square was used to detect differences in sign incidence rate between groups, p<0.05 was considered statistically significant.Results. There were no statistically significant gender differences (p>0,05) in type and degree of root resorption of multirooted primary teeth. Type A resorption prevailed and constituted 53.3% of all primary molars. Disturbances in root resorption of multirooted primary teeth in mixed dentition were related to health condition of primary teeth. Transition of even resorption to unven was considered a risk factor of delayed eruption and aberrant position of permanent teeth, and indication for extraction of a primary molar in question. Conclusions. 1) Even root resorption (type A) was detected in 53.3% of primary molars in mixed dentition by orthopantomography. 2) Transition from even resorption of primary molar roots to uneven resorption was associated with eruption deviations and delayed premolar eruption. 3) Timely extraction of primary molars with uneven root resorption facilitated correct eruption of premolars and increased effectiveness of secondary prevention of malocclusion in children.

scholarly journals Primary failure of eruption: Clinical and genetic findings in the mixed dentition

2018 ◽  
Vol 88 (3) ◽  
pp. 275-282 ◽  
Author(s):  
Cristina Grippaudo ◽  
Concetta Cafiero ◽  
Isabella D'Apolito ◽  
Beatrice Ricci ◽  
Sylvia A. Frazier-Bowers
Keyword(s):  
Clinical Evidence ◽  
Mutational Analysis ◽  
Mixed Dentition ◽  
Permanent Teeth ◽  
Phenotype Correlation ◽  
Posterior Teeth ◽  
Coding Regions ◽  
Primary Failure Of Eruption ◽  
Parathyroid Hormone 1 Receptor ◽  
In Silico Analyses

ABSTRACT Objective: To test the hypothesis that mutations in the parathyroid hormone 1 receptor (PTH1R) include effects in both primary and permanent teeth. Materials and Methods: DNA was extracted from saliva samples of 29 patients (8 familial and 21 sporadic) who presented with clinical evidence of infraoccluded teeth, and their unaffected relatives (N = 22). Sequencing followed by mutational analysis of the coding regions of PTH1R gene was completed for all individuals (N = 29). Results: Eight of 29 cases revealed a heterozygous pathogenic variant in the PTH1R gene; five of eight variants represented distinct mutations based on comparison with the dbSNP, HGMD, and ESP databases. One mutation (c.1765 T&gt;C p.Trp89Arg) was found to segregate within a family (n = 3). In silico analyses for all variants revealed a putative pathogenic effect. A genotype-phenotype correlation was reported as defined by a functional mutation in PTH1R and corresponding effects on one or more posterior teeth only; unilateral or bilateral involvement, infraoccluded primary teeth. Conclusions: Novel mutations were reported in the PTH1R gene that included PFE-affected primary molars, thus providing the basis for using a genetic diagnostic tool for early diagnosis leading to proper management.

Factors affecting buccal bone changes of maxillary posterior teeth after rapid maxillary expansion

2007 ◽  
Vol 132 (4) ◽  
pp. 428.e1-428.e8 ◽  
Author(s):  
Kitichai Rungcharassaeng ◽  
Joseph M. Caruso ◽  
Joseph Y.K. Kan ◽  
Jay Kim ◽  
Guy Taylor
Keyword(s):  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Posterior Teeth ◽  
Factors Affecting ◽  
Bone Changes

scholarly journals Prediction of Class II improvement after rapid maxillary expansion in early mixed dentition

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Alberto Caprioglio ◽  
Chiara Bergamini ◽  
Lorenzo Franchi ◽  
Nicolò Vercellini ◽  
Piero Antonio Zecca ◽  
...  
Keyword(s):  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Maxillary Expansion

scholarly journals Rapid maxillary expansion effects in Class II malocclusion: A systematic review

2015 ◽  
Vol 85 (6) ◽  
pp. 1070-1079 ◽  
Author(s):  
Murilo Fernando Neuppmann Feres ◽  
Hasnain Raza ◽  
Adel Alhadlaq ◽  
Tarek El-Bialy
Keyword(s):  
Systematic Review ◽  
Relevant Literature ◽  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Qualitative Assessment ◽  
Cochrane Library ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Maxillary Expansion

ABSTRACT Objective:  To evaluate the effectiveness of rapid maxillary expansion (RME) on the sagittal dental or skeletal parameters of growing children with Class II malocclusion. Materials and Methods:  A systematic review intended to identify relevant literature was conducted. The search was performed on Medline, Embase, Cochrane Library, and Scopus databases. Reference lists of the included articles were also screened for relevant documents. The qualitative assessment was performed according to the Methodological Index for Non-Randomized Studies (MINORS) tool, and the resultant data were grouped and analyzed concerning dental and skeletal sagittal effects of RME. Results:  Of 25 screened studies, seven articles met eligibility criteria and were included. Study samples were observed during mixed dentition stage and characterized as having either Class II dental malocclusion or skeletal discrepancy. None of the included studies was a randomized clinical trial. Included controlled studies presented several inadequacies related to control group or lacked appropriate comparative statistical analysis. Besides being frequently based on deficient methodology, dental and skeletal sagittal effects of RME were either controversial or lacked clinical relevance. Conclusion:  The effect of RME on the sagittal dimension of Class II malocclusions has not been proved yet. Future randomized controlled clinical trials are still needed to definitely address this question.

scholarly journals Transverse effects on the nasomaxillary complex one year after rapid maxillary expansion as the only intervention: A controlled study

2014 ◽  
Vol 19 (5) ◽  
pp. 79-87 ◽  
Author(s):  
Carolina da Luz Baratieri ◽  
Maheus Alves Jr ◽  
Claudia Trindade Mattos ◽  
Geórgia Wain Thi Lau ◽  
Lincoln Issamu Nojima ◽  
...  
Keyword(s):  
Nasal Cavity ◽  
Treated Group ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Controlled Study ◽  
Control Group ◽  
Maxillary Expansion ◽  
Treatment Onset ◽  
One Year ◽  
Base Width

The aim of this study was to assess by means of cone-beam computed tomography (CBCT) scans the transverse effects on the nasomaxillary complex in patients submitted to rapid maxillary expansion (RME) using Haas expander in comparison to untreated individuals. This prospective controlled clinical study assessed 30 subjects (18 boys and 12 girls) with mixed dentition and during pubertal growth. The treated group was submitted to RME with Haas expander, retention for six months and a six-month follow-up after removal. The control group matched the treated group in terms of age and sex distribution. CBCT scans were taken at treatment onset and one year after the expander was activated. Maxillary first molars (U6) width, right and left U6 angulation, maxillary alveolar width, maxillary basal width, palatal alveolar width, palatal base width, right and left alveolar angulation, palatal area, nasal base width, nasal cavity width and inferior nasal cavity area on the posterior, middle and anterior coronal slices were measured with Dolphin Imaging Software(r) 11.5, except for the first two variables which were performed only on the posterior slice. All transverse dimensions increased significantly (P < 0.05) in the treated group in comparison to the control, except for alveolar angulation and inferior nasal cavity area (P > 0.05). Results suggest that increase of molar, maxillary, palatal and nasal transverse dimensions was stable in comparison to the control group one year after treatment with RME.

A New Protocol for Maxillary Protraction in Cleft Patients: Repetitive Weekly Protocol of Alternate Rapid Maxillary Expansions and Constrictions

2005 ◽  
Vol 42 (2) ◽  
pp. 121-127 ◽  
Author(s):  
Eric Jein-Wein Liou ◽  
Wen-Ching Tsai
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Prospective Clinical Study ◽  
Maxillary Expansion ◽  
Treatment Results ◽  
Maxillary Protraction ◽  
Maxillary Advancement

Objective It was hypothesized that, through a repetitive weekly protocol of Alternate Rapid Maxillary Expansions and Constrictions (Alt-RAMEC), the maxilla in cleft patients could be protracted more effectively than with a single course of rapid maxillary expansion (RME). Methods Twenty-six consecutive unilateral cleft lip and palate patients at the age of mixed dentition were included in this prospective clinical study. The rapid maxillary expansion group included the first 16 consecutive patients undergoing 1 week of rapid maxillary expansion (1 mm/day) followed by 5 months, 3 weeks of maxillary protraction. The Alternate Rapid Maxillary Expansions and Constrictions group included the next 10 consecutive patients undergoing 9 weeks of Alternate Rapid Maxillary Expansions and Constrictions followed by 3 months, 3 weeks of maxillary protraction. Daily activation of the weekly expansion or constriction was 1.0 mm. Two-hinged expanders and intraoral maxillary protraction springs were used in both groups. Treatment results were evaluated cephalometrically. Results The amount of maxillary anterior displacement by the 2-hinged expander in the Alternate Rapid Maxillary Expansions and Constrictions group was 3.0 ± 0.9 mm at A point, significantly greater than the 1.6 ± 1.0 mm in the rapid maxillary expansion group. The amount of maxillary advancement with intraoral protraction springs in the Alternate Rapid Maxillary Expansions and Constrictions group was 2.9 ± 1.9 mm at A point, significantly greater than the 0.9 ± 1.1 mm in the rapid maxillary expansion group. The overall amount of maxillary advancement in the Alternate Rapid Maxillary Expansions and Constrictions group was 5.8 ± 2.3 mm at A point. This result remained stable, without significant relapse after 2 years. Conclusions Maxillary protraction using the 2-hinged expander, a repetitive weekly protocol of Alternate Rapid Maxillary Expansions and Constrictions, and intraoral protraction springs is most effective, with stable results at 2-year follow-up.

scholarly journals Alveolar bone changes after asymmetric rapid maxillary expansion

2014 ◽  
Vol 85 (5) ◽  
pp. 799-805 ◽  
Author(s):  
Mehmet Akin ◽  
Zeliha Muge Baka ◽  
Zehra Ileri ◽  
Faruk Ayhan Basciftci
Keyword(s):  
Cortical Bone ◽  
Alveolar Bone ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Bone Thickness ◽  
Unaffected Side ◽  
Posterior Teeth ◽  
Cortical Bone Thickness ◽  
Paired Samples ◽  
Affected Side

ABSTRACT Objective:  To quantitatively evaluate the effects of asymmetric rapid maxillary expansion (ARME) on cortical bone thickness and buccal alveolar bone height (BABH), and to determine the formation of dehiscence and fenestration in the alveolar bone surrounding the posterior teeth, using cone-beam computed tomography (CBCT). Materials and Methods:  The CBCT records of 23 patients with true unilateral posterior skeletal crossbite (10 boys, 14.06 ± 1.08 years old, and 13 girls, 13.64 ± 1.32 years old) who had undergone ARME were selected from our clinic archives. The bonded acrylic ARME appliance, including an occlusal stopper, was used on all patients. CBCT records had been taken before ARME (T1) and after the 3-month retention period (T2). Axial slices of the CBCT images at 3 vertical levels were used to evaluate the buccal and palatal aspects of the canines, first and second premolars, and first molars. Paired samples and independent sample t-tests were used for statistical comparison. Results:  The results suggest that buccal cortical bone thickness of the affected side was significantly more affected by the expansion than was the unaffected side (P &lt; .05). ARME significantly reduced the BABH of the canines (P &lt; .01) and the first and second premolars (P &lt; .05) on the affected side. ARME also increased the incidence of dehiscence and fenestration on the affected side. Conclusions:  ARME may quantitatively decrease buccal cortical bone thickness and height on the affected side.

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