scholarly journals Molar Changes with Cervical Headgear Alone or in Combination with Rapid Maxillary Expansion

2008 ◽  
Vol 78 (5) ◽  
pp. 847-851 ◽  
Author(s):  
Marcel Marchiori Farret ◽  
Eduardo Martinelli S. de Lima ◽  
Vanessa Pereira Araújo ◽  
Susana Maria Deon Rizzatto ◽  
Luciane Macedo de Menezes ◽  
...  
Keyword(s):  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Control Group ◽  
Maxillary Expansion ◽  
Lateral Cephalograms ◽  
Cervical Traction ◽  
Permanent Molars ◽  
Group 2 ◽  
First Permanent Molars ◽  
Group 1

Abstract Objective: To test the hypothesis that there is no difference in the distal movement of the maxillary first permanent molars when cervical headgear is used alone or in combination with rapid maxillary expansion. Materials and Methods: The sample was composed of 36 subjects (aged 9 to 13 years), treated in the Faculty of Dentistry, Pontifícia Universidade Cat;aaolica, Rio Grande do Sul, Brazil. The individuals were in good health and in their pubertal growth period. All had Class II division 1 malocclusion. The patients were divided into two groups: group 1 (22 subjects), Class II, with a normal transverse maxilla treated with cervical traction headgear (HG) 400 g 12 h/d, and group 2 (14 subjects), Class II maxillary transverse deficiency treated with rapid maxillary expansion plus cervical traction headgear (RME + HG). An additional group 3 (17 subjects) served as a control group and included individuals with the same characteristics. All subjects had two lateral cephalograms: initial (T1) and progress (T2), taken 6 months later. Differences between T1 and T2 were compared with the Student's t-test, and three groups were compared by the analysis of variance and Tukey multiple comparison test. Results: Results showed greater distal tipping and greater distal movement of the first permanent molars in group 1 (HG) than in group 2 (RME + HG), P < .05. No extrusion of first permanent molar occurred in either group (P > .05). Conclusion: The hypothesis was rejected. Cervical traction headgear alone produced greater distal movement effects in maxillary first permanent molars when compared with rapid maxillary expansion associated with cervical headgear.

Effect of Endocrowns on Fracture Strength and Microleakage of Endodontically Treated Primary Molar Teeth

2019 ◽  
Vol 10 (2) ◽  
pp. 113-119
Author(s):  
Tarek Seddik ◽  
Sera Derelioglu
Keyword(s):  
Fracture Strength ◽  
Compressive Loading ◽  
Class Ii ◽  
Control Group ◽  
Second Primary ◽  
Endodontically Treated Teeth ◽  
Primary Molar ◽  
Molar Teeth ◽  
Group 2 ◽  
Group 1

Objectives: Optimal restoration of endodontically treated teeth is very important for the durability of the endodontic treatment. The focus of this study was to evaluate the fracture strength and microleakage of composite endocrowns compared with Class II composite restorations in endodontically treated primary molar teeth. Materials and Methods: 48 extracted second primary molars were divided into 2 groups. Group 1 (control): teeth with Class II and endodontic access cavities restored with G-aenial composite; group 2: endocrown restorations with G-aenial composite. After completing restorative procedures, teeth were subjected to thermal cycling (500 cycles). Compressive loading was applied to half of the samples, although the other half were immersed in 0.5% basic fucsin solution for 24 h, sectioned, and examined for dye penetration under stereomicroscope. Data were subjected to statistical analysis by the Mann-Whitney U test (α = 0.05). Results: The fracture strength of endocrowns (1741 ± 379.35 N) was significantly higher than that of the control group (1126.5 ± 405.39 N) ( P < .05). No statistical difference was found in microleakage between the 2 groups ( P > .05). Conclusion: Endocrown preparation increases the fracture strength of the final composite restoration when used in primary molar teeth. Composite endocrown restorations can be a practical and an esthetic option for restoring endodontically treated primary molar teeth.

Iatrogenic Root Resorption of Upper First Permanent Molars Associated with Orthodontic Treatment

1987 ◽  
Vol 14 (2) ◽  
pp. 109-113 ◽  
Author(s):  
F. J. Hill
Keyword(s):  
Orthodontic Treatment ◽  
Root Resorption ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Second Molar ◽  
Permanent Molars ◽  
First Permanent Molars

A case of severe resorption of the roots of upper first molars, associated with second molar impaction, is reported. The possible causes of this condition, which occurred as a complication of rapid maxillary expansion and distal movement of the first molars, are discussed.

scholarly journals Treatment outcomes of Class II malocclusion cases treated with miniscrew-anchored Forsus Fatigue Resistant Device: A randomized controlled trial

2017 ◽  
Vol 87 (6) ◽  
pp. 824-833 ◽  
Author(s):  
Osama Eissa ◽  
Mahmoud El-Shennawy ◽  
Safaa Gaballah ◽  
Ghada El-Meehy ◽  
Tarek El Bialy
Keyword(s):  
Controlled Trial ◽  
Class Ii ◽  
Maxillary Incisor ◽  
Control Group ◽  
Mandibular Incisor ◽  
Treatment Groups ◽  
Lateral Cephalograms ◽  
Treatment Data ◽  
Group 2 ◽  
Forsus Fatigue Resistant Device

ABSTRACT Objective: To evaluate the skeletal, dental, and soft tissue effects of the Forsus Fatigue Resistant Device (FRD) used with miniscrew anchorage and compare them with those of the conventional Forsus FRD. Materials and Methods: This study was carried out on 38 patients. These patients were randomly allocated into three groups. The 14 patients in group 1 (aged 12.76 ± 1.0 years) were treated with the FRD appliance. In group 2, the 15 patients (aged 12.52 ± 1.12 years) received treatment with FRD using miniscrew anchorage, and the 9 patients in group 3 (aged 12.82 ± 0.9 years) received no treatment as a control group. Linear and angular measurements were made on lateral cephalograms before and immediately after Forsus treatment. Data were analyzed statistically using paired t-, ANOVA, and Tukey tests. Results: Class I molar relationship and overjet correction were achieved in both treatment groups. Although mandibular growth was statistically nonsignificant, there was a significant headgear effect on the maxilla. Mandibular incisor proclination, maxillary incisor retroclination, and distalization of maxillary molars were significant in both treatment groups. However, no significant differences were found between the treatment groups. Conclusions: Class II correction was mainly dentoalveolar in both treatment groups. Use of miniscrews with Forsus did not enhance mandibular forward growth nor prevent labial tipping of the mandibular incisors.

scholarly journals Stability in Dental Changes in RME and SARME: A 2-Year Follow-up

2009 ◽  
Vol 79 (2) ◽  
pp. 207-213 ◽  
Author(s):  
Oral Sokucu ◽  
H. Huseyin Kosger ◽  
A. Altug Bıcakci ◽  
Hasan Babacan
Keyword(s):  
Orthodontic Treatment ◽  
Rapid Maxillary Expansion ◽  
Study Group ◽  
Maxillary Expansion ◽  
Patient Groups ◽  
Group 2 ◽  
Maxillary Arch ◽  
Group 1 ◽  
Dental Casts

Abstract Objective: To compare the effects of rapid maxillary expansion (RME) and surgically assisted rapid maxillary expansion (SARME) on dentoalveolar structures following orthodontic treatment, as well as stability at 2-year follow-up. Materials and Methods: Two groups of subjects were used in the study. Group 1 consisted of 14 subjects (mean age, 12.7 ± 1.4 years) who were treated with RME, and Group 2 consisted of 13 subjects (mean age, 18.5 ± 2.3 years) who were treated with SARME. In both groups, all cases had a maxillary width deficiency with bilateral crossbites. Maxillary dental casts were available at three different intervals: pretreatment (T1), after orthodontic treatment (T2), and at follow-up recall (T3). Intermolar and interpremolar width, palatal height, and maxillary arch depth and length were assessed from maxillary dental casts. Results: Treatment by RME and SARME produced significant increases in intermolar and interpremolar width and maxillary arch length after expansion (T2) (P &lt; .05). The amount of relapse was not significantly different 2 years after treatment (P &gt; .05). Conclusions: Although age ranges of the patient groups are different, the dentoalveolar responses of RME and SARME were similar after orthodontic treatment. (Angle Orthod. 2009:79; )

scholarly journals Prospective study of dentoskeletal changes in Class II division malocclusion treatment with twin force bite corrector

2012 ◽  
Vol 83 (2) ◽  
pp. 319-326 ◽  
Author(s):  
Carlos Henrique Guimarães ◽  
José Fernando Castanha Henriques ◽  
Guilherme Janson ◽  
Marcio Rodrigues de Almeida ◽  
Janine Araki ◽  
...  
Keyword(s):  
Class Ii ◽  
Control Group ◽  
Facial Growth ◽  
Lateral Cephalograms ◽  
Before And After ◽  
Group 2 ◽  
In The Beginning ◽  
Experimental Group ◽  
Observation Period ◽  
Mandibular Incisors

ABSTRACT Objective: To evaluate the dentoskeletal changes of Class II malocclusion treatment with the Twin Force Bite Corrector (TFBC). Materials and Methods: The sample comprised 86 lateral cephalograms obtained from 43 subjects with Class II division 1 malocclusion; the subjects were divided into two groups. The experimental group comprised 23 patients with a mean initial age of 12.11 years who were treated with the TFBC for a mean period of 2.19 years. The control group included 40 lateral cephalograms from 20 Class II nontreated patients, with an initial mean age of 12.55 years and a mean observation period of 2.19 years. The lateral cephalograms were evaluated before and after orthodontic treatment in group 1 and in the beginning and end of the observation period in group 2. t-Tests were used to compare the initial and final cephalometric characteristics of the groups as well as the amount of change. Results: The experimental group presented greater maxillary growth restriction and mandibular retrusion than the control group, as well as greater maxillomandibular relationship improvement and greater labial tipping of the mandibular incisors. The results also showed a greater decrease in overbite and overjet in the experimental group, and there were no statistically significant differences in the craniofacial growth pattern between groups. Conclusions: The TFBC promotes restriction of anterior maxillary displacement without significant changes in mandibular length and position and improvement of maxillomandibular relationship without changes in facial growth and significant buccal tipping of mandibular incisors. Class II correction with the TFBC occurred primarily as a result of dentoalveolar changes.

scholarly journals Dental arch response to Haas-type rapid maxillary expansion anchored to deciduous vs permanent molars: A multicentric randomized controlled trial

2014 ◽  
Vol 85 (4) ◽  
pp. 570-576 ◽  
Author(s):  
Alessandro Ugolini ◽  
Carmen Cerruto ◽  
Luca Di Vece ◽  
Luis Huanca Ghislanzoni ◽  
Chiarella Sforza ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Rapid Maxillary Expansion ◽  
Dental Arch ◽  
Maxillary Expansion ◽  
Posterior Crossbite ◽  
Permanent Molar ◽  
Permanent Molars ◽  
Deciduous Molars ◽  
First Permanent Molars ◽  
Intercanine Distance

ABSTRACT Objective:  To assess maxilla and mandibular arch widths' response to Haas-type rapid maxillary expansion (RME) anchored to deciduous vs permanent molars on children with unilateral posterior crossbite. Materials and Methods:  Seventy patients with unilateral posterior crossbite recruited at the Universities of Genova, Siena, and Insubria (Varese) were randomly located into GrE (RME on second deciduous molars) or Gr6 (RME on first permanent molars) and compared. Results:  Upper intermolar distance and permanent molar angulation increased significantly in Gr6 vs GrE at T1. Upper intercanine distance increased significantly in GrE vs Gr6 at T1 and T2. GrE showed significant increases for upper intermolar and upper intercanine widths. Gr6 showed statistically significant increases for upper intermolar widths, for upper and lower intercanine widths, and for increases of angulation of upper and lower permanent molars. Conclusions:  GrE showed reduced molar angulation increases at T1 and reduced molar angulation decreases at T2 when compared with Gr6. At T2, the net increase of the upper intercanine distance in GrE was still significant compared with Gr6, indicating a more stable expansion in the anterior area.

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.

Soft Tissue Alterations Following Protraction Approaches with and without Rapid Maxillary Expansion

2014 ◽  
Vol 38 (3) ◽  
pp. 277-283 ◽  
Author(s):  
N Canigur Bavbek ◽  
B Balos Tuncer ◽  
T Tortop
Keyword(s):  
Soft Tissue ◽  
Rapid Maxillary Expansion ◽  
Chronological Age ◽  
Control Group ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Upper Lip ◽  
Lateral Cephalograms ◽  
Tissue Changes ◽  
Soft Tissue Changes

The aim of this study was to compare the soft tissue changes influenced by reverse headgear therapy with (RHg+RME) or without (RHg) rapid maxillary expansion with each other and with an untreated Class III control group (C). Study design: RHg group (10 girls, 6 boys, mean chronological age 11.1 years), RHg+RME group (12 girls, 4 boys, mean chronological age 10.8 years) and C group (7 girls, 11 boys, mean chronological age 10.2 years) comprised skeletally Class III patients with maxillary deficiency. Soft tissue measurements were made on lateral cephalograms at the beginning and at the end of the treatment and observation periods. Changes within each group and the differences between the groups were analyzed by paired t-test; the differences between the groups were determined by variance analysis and Duncan test with a significance level p&lt;0.05. Results: The sagittal depth of nose and maxilla, upper lip height and protrusion were significantly increased in treatment groups and the differences were significant when compared to control group (p&lt;0.05). Conclusion: Forward movement of upper lip was more prominent in RHg group. Reverse headgear treatment with or without RME revealed significant soft tissue changes when compared with a growing Class III control group with the same skeletal characteristics.

Measurement of the Maximum Occlusal Bite Force and its Relation to the Caries Spectrum of First Permanent Molars in Early Permanent Dentition

2020 ◽  
Vol 44 (6) ◽  
pp. 423-428
Author(s):  
Ravi Kumar Gudipaneni ◽  
Mohammad Khursheed Alam ◽  
Santosh R Patil ◽  
Mohmed Isaqali Karobari
Keyword(s):  
Bite Force ◽  
Permanent Dentition ◽  
Cross Sectional ◽  
Intergroup Comparison ◽  
Permanent Molars ◽  
Group 3 ◽  
Group 2 ◽  
First Permanent Molars ◽  
Occlusal Bite Force ◽  
Group 1

Objective: To determine the maximum occlusal bite force (MOBF) of the complete spectrum of dental caries in first permanent molars (FPMs) in children aged 7–9 years. Study design: A cross-sectional study was conducted on 123 children. The evaluation of the caries spectrum of FPMs was carried out using the Caries Assessment Spectrum and Treatment index (CAST). The MOBF was measured in the FPM region using the portable occlusal force gauze. Independent sample t-test and one-way analysis of variance test were performed to compare MOBF with CAST scores of FPMs. Based on the CAST scores, FPMs were categorized into three groups, group 1: healthy (score 0, 1, 2), group 2: premorbid (score 3), group 3: morbid (score 4, 5). Results: A significantly lower MOBF was observed (167.56 N ± 49.77) in the morbid stage (group 3) than in the premorbid stage (group 2: 291.57 N ± 56.64), and healthy (group 1; 320.93 N ± 54.23). Intergroup comparison also revealed that FPMs in the healthy stage was associated with a higher bite force compared to those in the premorbid and morbid stages (p&lt;0.001). Conclusions: The mean MOBF decreased with the progression of the caries spectrum of FPMs in early permanent dentition.

scholarly journals Dental and skeletal effects of combined headgear used alone or in association with rapid maxillary expansion

2015 ◽  
Vol 20 (5) ◽  
pp. 43-49
Author(s):  
Milton Meri Benitez Farret ◽  
Eduardo Martinelli de Lima ◽  
Marcel M. Farret ◽  
Laura Lutz de Araújo
Keyword(s):  
Side Effects ◽  
Rapid Maxillary Expansion ◽  
Class Ii Malocclusion ◽  
Maxillary Expansion ◽  
Clockwise Rotation ◽  
Maxillary Molars ◽  
Skeletal Effects ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Objective: The aim of this study was to assess the effects of combined headgear used alone or in association with rapid maxillary expansion, as the first step for Class II malocclusion treatment.Methods:The sample comprised 61 patients divided into three groups: Group 1, combined headgear (CH); Group 2, CH + rapid maxillary expansion (CH + RME); and Group 3, control (CG). In Group 1, patients were treated with combined headgear until Class I molar relationship was achieved. In Group 2, the protocol for headgear was the same; however, patients were previously subject to rapid maxillary expansion.Results:Results showed distal displacement of maxillary molars for both experimental groups (p < 0.001), with distal tipping only in Group 1 (CH) (p < 0.001). There was restriction of forward maxillary growth in Group 2 (CH + RME) (p < 0.05) and clockwise rotation of the maxilla in Group 1 (CH) (p < 0.05).Conclusion: Based on the results, it is possible to suggest that treatment with both protocols was efficient; however, results were more significant for Group 2 (CH + RME) with less side effects.

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