scholarly journals Stability prediction of early orthopedic treatment in Class III malocclusion: morphologic discriminant analysis

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
V. Paoloni ◽  
F. C. De Razza ◽  
L. Franchi ◽  
P. Cozza
Keyword(s):  
Discriminant Analysis ◽  
Treatment Success ◽  
Mixed Dentition ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Orthopedic Treatment ◽  
Predisposing Factor ◽  
Bite Block ◽  
Transversal Width

Abstract Background To evaluate morphologic differences between class III malocclusion success and failure treatment subjects in order to identify which variables are more predictive for long-term stability in early orthopedic treatment. In this retrospective study, 31 patients were enrolled from the Department of Orthodontics (Rome Tor Vergata). Inclusion criteria were as follows: white ancestry, class III malocclusion, mixed dentition, cervical stage (CS) 1-2, no pseudo-class III. Pre-treatment radiographic and cast records were collected. Each patient underwent rapid maxillary expansion/facial mask/bite block (RME/FM/BB) orthopedic treatment until correction. At T1 (permanent dentition, CS4), records were recollected. According to treatment stability, relapse group (RG, 19) and success group (SG, 12) were identified. Sagittal and vertical cephalometric and digital cast measurements were performed. Student’s t tests were used for statistically significant differences inter and intra groups. For discriminant analysis, relapse or success status was added to each patient’s T0 data. Results At T0, RG showed larger upper anterior transversal width (p = 0.0266), while at T1 the upper anterior length was shorter than SG (p = 0.0028). Between T1 and T0, both groups showed larger upper anterior and posterior transversal widths. SG had greater upper anterior (p = 0.0066) and posterior (p = 0.449) sagittal length. RG presented larger lower anterior (p = 0.0012) and posterior (p = 0.0002) transversal widths, while there were no differences in SG lower arch. Discriminant analysis provided two predictive variables with an accuracy of 80.6%: upper anterior length and upper posterior length. Conclusion A shorter and wider maxilla could be a predisposing factor for relapse and failure of the early orthopedic treatment of class III malocclusion patients. The absence of mandibular changes could be predictable for treatment success.

Effects of Combined Bonded Maxillary Expansion and Face Mask on Dental Arch Length in Patients with Skeletal Class III Malocclusions

2017 ◽  
Vol 41 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Fatma Deniz Uzuner ◽  
Duygu Öztürk ◽  
Selin Kale Varlık
Keyword(s):  
Face Mask ◽  
Mixed Dentition ◽  
Dental Arch ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Skeletal Class ◽  
Palatal Rugae ◽  
Dental Arch Length ◽  
Orthodontic Models

Objective: To evaluate the effects of combined rapid maxillary expansion (RME) and face mask (FM) therapy during the mixed dentition period on the dental arch length in patients with skeletal Class III malocclusion. Study Design: We evaluated pre- and post-treatment orthodontic models of 52 patients (25 girls, 27 boys) aged 8–12 years with skeletal Class III malocclusion(ANB<0) accompanied by maxillary transverse deficiency and retrognatism treated by bonded RME-FM therapy for a mean duration of 8 months. Palatal rugae, the cusp tips of permanent first molars, deciduous molars/permanent premolars, deciduous canines and the incisal edges of permanent central incisors were marked on orthodontic models, which were then photocopied. Inter-molar, inter-premolar and inter-canine widths; the arch length; the arch depth and molar and incisor sagittal movements were measured on these photocopies. Statistical comparisons were made using paired t-tests. Results: Inter-molar, inter-premolar and inter-canine widths and the arch length showed significant increases after treatment, while the arch depth showed a significant decrease (p<0.001 for all). Conclusions: With the study limitations, our results suggest that combined RME-FM therapy increases the arch length in the mixed dentition of patients with skeletal Class III malocclusion.

scholarly journals Orthopedic treatment of Class III malocclusion with rapid maxillary expansion combined with a face mask: a cephalometric assessment of craniofacial growth patterns

2012 ◽  
Vol 17 (3) ◽  
pp. 118-124 ◽  
Author(s):  
Daniella Torres Tagawa ◽  
Carolina Loyo Sérvulo da Cunha Bertoni ◽  
Maria Angélica Estrada Mari ◽  
Milton Redivo Junior ◽  
Luís Antônio de Arruda Aidar
Keyword(s):  
Face Mask ◽  
Rapid Maxillary Expansion ◽  
Growth Patterns ◽  
Craniofacial Growth ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Orthopedic Treatment

scholarly journals Quick Correction of a Skeletal Class III Maloclussion in Primary Dentition with Face Mask Plus Rapid Maxillary Expansion Therapy

2018 ◽  
Vol 20 (2) ◽  
pp. 31-37
Author(s):  
Hilda Alejandra Bedolla-Gaxiola DDS ◽  
David Garrigós-Esparza DDS ◽  
Juan Carlos Hernández-Cabanillas DDS, MS ◽  
Miguel Ángel Rosales-Berber DDS ◽  
Amaury Pozos-Guillén DDS, PhD ◽  
...  
Keyword(s):  
Clinical Signs ◽  
Face Mask ◽  
Rapid Maxillary Expansion ◽  
Primary Dentition ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Orthopedic Treatment ◽  
Clockwise Rotation ◽  
Skeletal Class

Skeletal Class III is a malocclusion characterized by anterior crossbite as a result of an abnormal skeletal maxillary and mandibular base discrepancy, which involves disharmony of craneofacial skeleton and profile. The preferred management for children having skeletal Class III malocclusion with retruded maxilla and/or prognathic mandible is the use of devices that encourage the growth and anterior movement of the maxilla bone and/or restrict the exessive mandible growth. The orthopedic treatment consisting of a face mask with rapid maxillary expansion (RME) produces the most dramatic results in the shortest period of time. The purpose of this article is to review a quick correction of skeletal class III maloclussion in the primary dentition through a case example with use of a face mask plus rapid maxillary expansion therapy in a 5 year-old male patient due to a combination of retruded maxilla and protruded mandible, in primary dentition, who was treated with a Petit face mask in conjunction with a bonded RME intraoral appliance added with bite blocks. The first evident occlusal outcomes were a clockwise rotation of the mandible, a positive overjet of 3 mm, a correct overbite, a canine Class I relationship, and a bilateral flush terminal plane. After discussing the present clinical case report and the related published literature, we concluded that skeletal class III malocclusions should be treated as soon as the first clinical signs of abnormal craniofacial growth are recognized, during the first years of life.

scholarly journals Quick Correction of a Skeletal Class III Maloclussion in Primary Dentition with Face Mask Plus Rapid Maxillary Expansion Therapy

2018 ◽  
Vol 20 (2) ◽  
pp. 31-37
Author(s):  
Hilda Alejandra Bedolla-Gaxiola DDS ◽  
David Garrigós-Esparza DDS ◽  
Juan Carlos Hernández-Cabanillas DDS, MS ◽  
Miguel Ángel Rosales-Berber DDS ◽  
Amaury Pozos-Guillén DDS, PhD ◽  
...  
Keyword(s):  
Clinical Signs ◽  
Face Mask ◽  
Rapid Maxillary Expansion ◽  
Primary Dentition ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Orthopedic Treatment ◽  
Clockwise Rotation ◽  
Skeletal Class

Skeletal Class III is a malocclusion characterized by anterior crossbite as a result of an abnormal skeletal maxillary and mandibular base discrepancy, which involves disharmony of craneofacial skeleton and profile. The preferred management for children having skeletal Class III malocclusion with retruded maxilla and/or prognathic mandible is the use of devices that encourage the growth and anterior movement of the maxilla bone and/or restrict the exessive mandible growth. The orthopedic treatment consisting of a face mask with rapid maxillary expansion (RME) produces the most dramatic results in the shortest period of time. The purpose of this article is to review a quick correction of skeletal class III maloclussion in the primary dentition through a case example with use of a face mask plus rapid maxillary expansion therapy in a 5 year-old male patient due to a combination of retruded maxilla and protruded mandible, in primary dentition, who was treated with a Petit face mask in conjunction with a bonded RME intraoral appliance added with bite blocks. The first evident occlusal outcomes were a clockwise rotation of the mandible, a positive overjet of 3 mm, a correct overbite, a canine Class I relationship, and a bilateral flush terminal plane. After discussing the present clinical case report and the related published literature, we concluded that skeletal class III malocclusions should be treated as soon as the first clinical signs of abnormal craniofacial growth are recognized, during the first years of life.

scholarly journals Cephalometric variables used to predict the success of interceptive treatment with rapid maxillary expansion and face mask. A longitudinal study

2015 ◽  
Vol 20 (1) ◽  
pp. 85-96 ◽  
Author(s):  
Daniele Nóbrega Nardoni ◽  
Danilo Furquim Siqueira ◽  
Mauricio de Almeida Cardoso ◽  
Leopoldino Capelozza Filho
Keyword(s):  
Face Mask ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Cephalometric Analysis ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Orthopedic Treatment ◽  
Failure Group ◽  
Results Of Treatment ◽  
Treatment Onset

INTRODUCTION: Prognosis is the main limitation of interceptive treatment of Class III malocclusions. The interceptive procedures of rapid maxillary expansion (RME) and face mask therapy performed in early mixed dentition are capable of achieving immediate overcorrection and maintenance of facial and occlusal morphology for a few years. Individuals presenting minimal acceptable faces at growth completion are potential candidates for compensatory orthodontic treatment, while those with facial involvement should be submitted to orthodontic decompensation for orthognathic surgery. OBJECTIVES: To investigate cephalometric variables that might predict the outcomes of orthopedic treatment with RME and face mask therapy (FM). METHODS: Cephalometric analysis of 26 Class III patients (mean age of 8 years and 4 months) was performed at treatment onset and after a mean period of 6 years and 10 months at pubertal growth completion, including a subjective facial analysis. Patients was divided into two groups: success group (21 individuals) and failure group (5 individuals). Discriminant analysis was applied to the cephalometric values at treatment onset. Two predictor variables were found by stepwise procedure. RESULTS: Orthopedic treatment of Class III malocclusion may have unfavorable prognosis at growth completion whenever initial cephalometric analysis reveals increased lower anterior facial height (LAFH) combined with reduced angle between the condylar axis and the mandibular plane (CondAx.MP). CONCLUSION: The results of treatment with RME and face mask therapy at growth completion in Class III patients could be predicted with a probability of 88.5%.

scholarly journals Analysis of orthopedic treatment of skeletal Class III malocclusion with Rapid Palatal Expansion and Face Mask therapy

2019 ◽  
Vol 22 (4) ◽  
pp. 467-474
Author(s):  
Ana de Lourdes Sá De Lira ◽  
Igo Rafael Costa Araújo
Keyword(s):  
Face Mask ◽  
Cross Sectional Study ◽  
Mixed Dentition ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Cross Sectional ◽  
Skeletal Class ◽  
Rapid Palatal Expansion ◽  
Maxillary Deficiency

Aim: To demonstrate the main effects on maxillary and facial profile after treatment with expansion and face mask therapy in patients pattern III Class III. Material and Method: A cross-sectional study of maxillary expansion and reverse traction performed in 4 patients with maxillary deficiency, in the pre-peak pubertal growth stage and in the mixed dentition, with cephalograms before and after treatment, using angular measurements (SNA, SNENA, ANL and 1NA) and linear (S’-ENA, S’-A, 1-NA, OVERJET, S-LS and S-LI) and plot overlays. Results: Improvement in overjet was observed, going from negative to positive in all cases treated with incisor uncrossing, although it was not statistically significant. The upper and lower labial posture with respect to the base of the nose and the ment improved significantly, represented by the measurements S-LS and S-LI, with a change from the concave profile to slightly convex. Conclusion: Class III malocclusion with maxillary deficiency treated with rapid maxillary disjunction and reverse traction with facial mask was effective in both groups, with maxillary protraction and shifting in the concave to slightly convex profile.KeywordsFacial Mask; Rapid maxillary expansion; Class III.

scholarly journals Early treatment of Class III malocclusion with a tandem traction bow appliance

2016 ◽  
Vol 6 ◽  
pp. 228-231
Author(s):  
Sneha Basaveshwar Valgadde ◽  
Kishor Chougule
Keyword(s):  
Mixed Dentition ◽  
Growth Spurt ◽  
Oral Appliances ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Facial Growth ◽  
Orthopedic Treatment ◽  
Maxillary Protraction ◽  
The Stability ◽  
Relationship Of

Since Class III malocclusion is progressive in nature, the facial growth of Class III malocclusion worsens with age. Class III malocclusion is associated with a deviation in the sagittal relationship of the maxilla and the mandible, characterized by a deficient maxilla, retrognathic mandible, or a combination of both. The early orthopedic treatment of Class III malocclusions, at the end of primary dentition or the beginning of mixed dentition, prior to growth spurt, allows the accomplishment of successful results, providing facial balance, modifying the maxillofacial growth and development, and in many instances, preventing a future surgical treatment by increasing the stability. Many treatment approaches can be found in the literature regarding orthopedic and orthodontic treatment of Class III malocclusion, including intra- and extra-oral appliances. The major problem with extraoral anchorage has been of patient compliance due to its physical appearance. The case report presents an intraoral modified tandem appliance for maxillary protraction that has been used clinically to achieve successful results without relying much on patient co-operation.

Skeletal effects of early treatment of Class III malocclusion with maxillary expansion and face-mask therapy

1998 ◽  
Vol 113 (3) ◽  
pp. 333-343 ◽  
Author(s):  
Tiziano Baccetti ◽  
Jean S. McGill ◽  
Lorenzo Franchi ◽  
James A. McNamara ◽  
Isabella Tollaro
Keyword(s):  
Early Treatment ◽  
Face Mask ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Skeletal Effects

scholarly journals Early correction of class III malocclusion with rapid maxillary expansion and face mask therapy

2013 ◽  
Vol 5 (6) ◽  
pp. 169 ◽  
Author(s):  
Muthukumar Karthi ◽  
GobichettipalayamJagatheeswaran Anbuselvan ◽  
BhandariPawan Kumar
Keyword(s):  
Face Mask ◽  
Rapid Maxillary Expansion ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Early Correction

scholarly journals Assessment of Immediate Skeletal Changes after Alternate Rapid Maxillary Expansion and Constriction – A Case Report

2021 ◽  
Vol 10 (34) ◽  
pp. 2954-2959
Author(s):  
Shilpa Venkatesh Pharande
Keyword(s):  
Case Report ◽  
Rapid Maxillary Expansion ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Skeletal Class ◽  
Posterior Crossbite ◽  
Skeletal Changes ◽  
Before And After ◽  
Opening And Closing

The Alt-RAMEC protocol was introduced by Liou in the year 2005. It allows for sutural mobilisation by opening and closing the RME screw for 7-9 weeks. Maxillary protraction after the use of Alt-Ramec (alternate rapid maxillary expansion and contraction) protocol is an efficient method for early treatment of skeletal Class III malocclusion. This case report shows the results of using a hyrax bonded maxillary expander with the Alt-RAMEC protocol to treat a maxillary hypoplasia Class III malocclusion. A 12-year-old patient with skeletal class III malocclusion with anterior as well as the unilateral posterior crossbite was treated using this protocol. CBCT scans were taken before and after expansion. These CBCT scans were used for assessing and analysing the skeletal changes that have occurred after using the AltRamec protocol. The objective of this case report is to assess skeletal changes after using the Alt-RAMEC protocol.

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