Skeletal class III treatment with mini-screw-assisted memory screw-facemask combination: A pilot study

Abstract Background Class III malocclusion is associated with high sexual dimorphism, especially in individuals older than 13 years of age, with significant differences in growth between males and females during the pubertal and postpubertal stages, and in adulthood. The aim of this research was to examine differences between males and females in long-term stability (10 years) of treatment for skeletal Class III malocclusion. Methods Thirty patients (15 males and 15 females) with skeletal Class III malocclusion, who had been treated with rapid maxillary expansion (RME) combined with face mask protraction followed by fixed appliances, were selected sequentially. Thirty patients (15 males and 15 females) with skeletal Class I and mesofacial patterns treated only with fixed appliances for dental problems served as the control group. Differences between groups and sexes were evaluated using lateral cephalograms taken at the start of treatment (T0), immediately after the end of treatment (T1), and after 10 years (T2). The long-term treatment success rate was calculated. Results Ten years after Class III treatment, overjet and overbite relapse occurred similarly in females (− 0.68 ± 0.7 mm; − 0.38 ± 0.75 mm, respectively) and males (− 1.09 ± 1.47 mm; − 0.64 ± 0.9 mm, respectively); the ANB angle and Wits appraisal became significantly more negative in males (− 1.37 ± 1.06°; − 2.7 ± 2.53 mm) than in females (− 0.18 ± 1.26°; − 0.46 ± 1.94 mm). The success rate was 73.3% in males and 80% in females. Conclusions Significant differences in the long-term stability of Class III treatment outcomes have been found between males and females, with a larger skeletal Class III relapse and lower long-term success rates in males.

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The Removable Mandibular Retractor vs the Boneanchored Intermaxillary Traction in the Correction of Skeletal Class III Malocclusion in Children: A Randomized Controlled Trial

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1856 ◽

2016 ◽

Vol 17 (5) ◽

pp. 361-371 ◽

Cited By ~ 2

Author(s):

Mohammad Y Hajeer ◽

Abdulmalek MR Majanni

Keyword(s):

Randomized Controlled Trial ◽

Controlled Trial ◽

Primary Outcome Measure ◽

Treatment Modalities ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Randomized Controlled ◽

Soft Tissue Changes ◽

Class Iii Treatment

ABSTRACT Background No randomized controlled trial has tried to compare early class III treatment outcomes between the removable mandibular retractor (RMR) and the bone-anchored intermaxillary traction (BAIMT). The objective of this study was to evaluate skeletal, dental, and soft-tissue changes following early class III treatment with these two treatment modalities. Materials and methods A parallel group randomized controlled trial was conducted on patients with class III malocclusion, treated at the University of Al-Baath Dental School in Hamah, Syria. Ninetythree children with skeletal class III malocclusion were evaluated and 41 children fulfilled the inclusion criteria. Randomization was performed using computer-generated tables; allocation was concealed using sequentially numbered opaque and sealed envelopes. Thirty-eight participants were analyzed (mean age 11.46 ± 1.28 years). They were randomly distributed into two groups receiving either the RMR or the BAIMT technique with 19 children in each (1:1 allocation ratio). The primary outcome measure was the horizontal movement of points A, B, and Pogonion. Results Point A showed greater anterior movement in the BAIMT group (x̄ = 1.69 mm) than in the RMR group (x̄ = 1.05 mm; p < 0.001). Points B and Pog showed posterior movement in the BAIMT group (x̄ = −3.01 and −2.51 mm respectively) and anterior movements in the RMR group (x̄ = 0.22 and 0.78 mm respectively). Conclusion The BAIMT appeared to be more effective than the RMR in the correction of mild to moderate class III malocclusion in growing patients. Clinical significance Bone-anchored intermaxillary elastics appears to be a promising solution for class III growing patients with mild to moderate degrees of skeletal discrepancy. How to cite this article Majanni AMR, Hajeer MY. The Removable Mandibular Retractor vs the Bone-anchored Intermaxillary Traction in the Correction of Skeletal Class III Malocclusion in Children: A Randomized Controlled Trial. J Contemp Dent Pract 2016;17(5):361-371.

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A New Appliance for Class III Treatment in Growing Patients: Pushing Splints 3

Case Reports in Dentistry ◽

10.1155/2019/9597024 ◽

2019 ◽

Vol 2019 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Stefano Martina ◽

Roberto Martina ◽

Lorenzo Franchi ◽

Vincenzo D’Antò ◽

Rosa Valletta

Keyword(s):

Orthognathic Surgery ◽

Good Control ◽

Orthopedic Procedures ◽

Class Iii ◽

Maxillary Expansion ◽

Clockwise Rotation ◽

Skeletal Class ◽

Vertical Growth ◽

The Face ◽

Class Iii Treatment

Several orthopedic procedures have been used in early treatment to reduce the need for orthognathic surgery in skeletal Class III. The most used treatment is Rapid Maxillary Expansion and Facemask. This procedure also determines a clockwise rotation of the mandible, increasing the vertical dimensions of the lower third of the face. Therefore, the control of vertical dimension appears to be a key objective in Class III hyperdivergent patients. This article shows two skeletal Class III patients treated with a new appliance (Pushing Splints 3), that is able to correct sagittal discrepancy with a good control of the vertical growth. In both cases, Class I relationship with a proper Overjet and Overbite was achieved with improvement of profile. The final cephalometric values demonstrated a stable sagittal relationship and a good control of the vertical growth. The specific biomechanic features of the PS3 appliance permit the improvement of the sagittal jaw relationship, delivering at the same time vertical vectors that are able to control the alveolar and skeletal components of the vertical growth. This could be useful in the treatment of Class III hyperdivergent patients.

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Kinematic analysis of mandibular motion before and after orthognathic surgery for skeletal Class III malocclusion: A pilot study

CRANIO® ◽

10.1080/08869634.2016.1154681 ◽

2016 ◽

Vol 35 (2) ◽

pp. 94-100 ◽

Cited By ~ 3

Author(s):

Alessandro Ugolini ◽

Andrea Mapelli ◽

Marzia Segù ◽

Domenico Galante ◽

Fernanda V. Sidequersky ◽

...

Keyword(s):

Pilot Study ◽

Kinematic Analysis ◽

Orthognathic Surgery ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Before And After

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Acoustic Analysis of Voice and Speech in Men with Skeletal Class III Malocclusion: A Pilot Study

Folia Phoniatrica et Logopaedica ◽

10.1159/000505186 ◽

2020 ◽

pp. 1-9

Author(s):

Flávia Viegas ◽

Danieli Viegas ◽

Glaucio Serra Guimarães ◽

Fabio Ritto ◽

Marcia Simões-Zenari ◽

...

Keyword(s):

Pilot Study ◽

Acoustic Analysis ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Voice And Speech

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Effect of Orthopedic Treatment for Class III Malocclusion on Upper Airways: A Systematic Review and Meta-Analysis

Journal of Clinical Medicine ◽

10.3390/jcm9093015 ◽

2020 ◽

Vol 9 (9) ◽

pp. 3015 ◽

Cited By ~ 1

Author(s):

Golnar Havakeshian ◽

Vasiliki Koretsi ◽

Theodore Eliades ◽

Spyridon N. Papageorgiou

Keyword(s):

Risk Of Bias ◽

Class Iii ◽

Class Iii Malocclusion ◽

Orthopedic Treatment ◽

Upper Airways ◽

Skeletal Class ◽

Maxillary Protraction ◽

Mean Differences ◽

Class Iii Treatment ◽

Airway Dimensions

The aim of this systematic review is to compare the effect on the upper airways of orthopedic treatment for skeletal Class III malocclusion with untreated controls. Nine databases were searched up to August 2020 for randomized or nonrandomized clinical trials comparing orthopedic Class III treatment (facemask or chin-cup) to untreated Class III patients. After duplicate study selection, data extraction, and risk of bias assessment (Risk Of Bias In Non-randomized Studies-of Interventions [ROBINS-I]), random-effects meta-analyses of Mean Differences (MDs)/Standardized Mean Differences (SMD) and 95% Confidence Intervals (CIs) were performed, followed by the Grading of Recommendations Assessment, Development and Evaluation assessment evidence-quality. A total of 10 papers (9 unique nonrandomized studies) with 466 patients (42.7% male; average age 9.1 years) were finally included. Limited evidence indicated that compared to normal growth, maxillary protraction with facemask was associated with increases in total airway area (n = 1; MD = 222.9 mm2; 95% CI = 14.0–431.7 mm2), total nasopharyngeal area (n = 4; SMD = 1.6; 95% CI = 1.2–2.0), and individual airway dimensions (upper-airway MD = 2.5 mm; lower-airway MD = 2.1 mm; upper-pharynx MD = 1.6 mm; lower-pharynx MD = 1.0 mm; all n = 6). Subgroup/meta-regression analyses did not find any significant effect-modifiers, while the results were retained 2–5 years postretention. Our confidence in these estimates was, however, very low, due to the inclusion of nonrandomized studies with methodological issues. Limited data from 2 chin-cup studies indicated smaller benefits on airway dimensions. Existing evidence from controlled clinical studies on humans indicates that maxillary protraction for skeletal Class III treatment might be associated with increased airway dimensions, which are, however, mostly minor in magnitude.

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